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WO2011161757A1 - Dispositif de commande de transmission automatique pour véhicule - Google Patents

Dispositif de commande de transmission automatique pour véhicule Download PDF

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Publication number
WO2011161757A1
WO2011161757A1 PCT/JP2010/060496 JP2010060496W WO2011161757A1 WO 2011161757 A1 WO2011161757 A1 WO 2011161757A1 JP 2010060496 W JP2010060496 W JP 2010060496W WO 2011161757 A1 WO2011161757 A1 WO 2011161757A1
Authority
WO
WIPO (PCT)
Prior art keywords
control
clutch
automatic transmission
transmission
predetermined
Prior art date
Application number
PCT/JP2010/060496
Other languages
English (en)
Japanese (ja)
Inventor
友宏 珍部
典弘 塚本
綾部　篤志
友弘 浅見
Original Assignee
トヨタ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Priority to JP2012521194A priority Critical patent/JP5338982B2/ja
Priority to CN201080067600.XA priority patent/CN102947623B/zh
Priority to PCT/JP2010/060496 priority patent/WO2011161757A1/fr
Publication of WO2011161757A1 publication Critical patent/WO2011161757A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D48/0206—Control by fluid pressure in a system with a plurality of fluid-actuated clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H61/0437—Smoothing ratio shift by using electrical signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0227—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices
    • F16D2048/0233—Source of pressure producing the clutch engagement or disengagement action within a circuit; Means for initiating command action in power assisted devices by rotary pump actuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0266—Actively controlled valves between pressure source and actuation cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/30—Signal inputs
    • F16D2500/314—Signal inputs from the user
    • F16D2500/31406—Signal inputs from the user input from pedals
    • F16D2500/3144—Accelerator pedal position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/50—Problem to be solved by the control system
    • F16D2500/502—Relating the clutch
    • F16D2500/50293—Reduction of vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/70—Details about the implementation of the control system
    • F16D2500/704—Output parameters from the control unit; Target parameters to be controlled
    • F16D2500/70422—Clutch parameters
    • F16D2500/70424—Outputting a clutch engaged-disengaged signal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0481—Smoothing ratio shift during range shift from drive (D) or reverse (R) to neutral (N)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0488—Smoothing ratio shift during range shift from neutral (N) to drive (D)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0496—Smoothing ratio shift for low engine torque, e.g. during coasting, sailing or engine braking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/20—Preventing gear creeping ; Transmission control during standstill, e.g. hill hold control
    • F16H2061/207—Preventing gear creeping ; Transmission control during standstill, e.g. hill hold control by neutral control

Definitions

  • the present invention relates to a control device for an automatic transmission for a vehicle that performs neutral control, and more particularly to control when executing neutral control while the vehicle is running.
  • a predetermined start condition for example, a start condition that the shift position is the forward travel “D” position, the accelerator is off, the brake is on, and the vehicle is stopped
  • a predetermined start condition for example, a start condition that the shift position is the forward travel “D” position, the accelerator is off, the brake is on, and the vehicle is stopped
  • the transmission torque capacity equivalent to engagement torque, engagement force, clutch pressure, etc.
  • the vehicle start engagement device for example, input clutch, start clutch
  • N control for example, it is proposed that the start clutch is in a half-released state (slip state) in consideration of responsiveness of clutch engagement at the time of restart.
  • N control it has also been proposed to completely release the starting clutch in order to further improve fuel efficiency.
  • Patent Document 1 describes that N control for completely releasing the starting clutch is executed in accordance with traffic conditions around the vehicle such as a lighting state of a traffic light received from the outside.
  • JP 2008-286281 A Japanese Patent Laid-Open No. 5-79562
  • the N control is started not only when the vehicle is stopped but also when the vehicle is running, aiming at further improvement of fuel consumption, that is, N during the vehicle running from the accelerator-off decelerated running to the vehicle stopping. It is conceivable to execute control (N control during traveling). However, when executing the N control during traveling, there is a possibility that an uncomfortable feeling or the like may occur due to a change in deceleration due to, for example, a decrease in engine braking force during deceleration traveling. Further, considering the acceleration response at the time of reacceleration due to the accelerator re-depression, it is desired to return (cancel) from the N control as soon as possible while suppressing the shock accompanying the engagement of the starting clutch.
  • the present invention has been made against the background of the above circumstances, and an object of the present invention is an automatic transmission for a vehicle that can execute neutral control while the vehicle is running while suppressing a decrease in drivability. It is to provide a control device.
  • the gist of the present invention is that: (a) the transmission torque capacity of the starting clutch that transmits the engine power to the drive wheel side is reduced to reduce the power between the engine and the drive wheel; A control device for an automatic transmission for a vehicle capable of executing a neutral control in which a transmission path is in a power transmission suppression state, wherein (b) the state in which the automatic transmission is set to the current gear ratio during deceleration traveling with the accelerator off.
  • the transmission torque capacity is gradually reduced, and when the vehicle speed-related value during the deceleration traveling is equal to or less than a predetermined vehicle speed-related value, the starting clutch is released with the automatic transmission set to the gear ratio at the time of starting.
  • the transmission torque capacity is reduced.
  • the transmission torque capacity is gradually reduced in the state where the automatic transmission is at the current gear ratio during deceleration travel with the accelerator off, and the vehicle speed related value during the deceleration travel is a predetermined vehicle speed related value.
  • the transmission torque capacity is reduced so that the starting clutch is released with the automatic transmission set to the gear ratio at the time of starting.
  • the output torque for example, engine brake torque
  • the starting clutch when the vehicle speed is high to some extent, the starting clutch is in a slip state, and when releasing the N control during traveling by accelerator-on, it is possible to suppress the feeling of rattling during re-acceleration while suppressing the engagement shock. . Further, for example, since the output torque goes to substantially zero due to a decrease in the transmission torque capacity, even when the starting clutch is completely released during vehicle deceleration traveling, the uncomfortable feeling due to the change in deceleration is suppressed. Further, for example, when the vehicle speed is less than a predetermined vehicle speed-related value, the automatic transmission is set to the gear ratio at the time of starting and the starting clutch is released. By doing so, it is possible to suppress the feeling of slack during re-acceleration while suppressing the engagement shock. Therefore, it is possible to further improve fuel efficiency by executing neutral control while the vehicle is traveling while suppressing a decrease in drivability.
  • the rotational speed on the input side of the automatic transmission calculated based on the vehicle speed related value during the decelerating traveling and the gear ratio at the start of the automatic transmission is the idle rotational speed of the engine.
  • the transmission torque capacity is reduced so as to release the starting clutch when the rotational speed is lower than a predetermined rotational speed higher than the idle rotational speed.
  • the starting clutch Since the starting clutch is disengaged (at the time of switching to the turning state), the negative torque, which is reduced toward substantially zero due to the decrease in the transmission torque capacity, is suppressed from switching to the positive torque, and the uncomfortable feeling due to the change in output torque is suppressed.
  • the transmission clutch capacity is engaged with the starting clutch prior to gradually decreasing the transmission torque capacity with the automatic transmission at the current gear ratio.
  • the maximum transmission torque capacity is reduced to a predetermined transmission torque capacity that does not cause differential rotation in the starting clutch even when the accelerator is turned on, and the vehicle speed related value during the deceleration traveling is higher than the predetermined vehicle speed related value.
  • the transmission torque capacity is maintained at the predetermined transmission torque capacity until the vehicle speed is less than or equal to the predetermined vehicle speed related value. In this way, for example, it is possible to promptly shift to gradually reducing the transmission torque capacity in a state where the automatic transmission is set to the current gear ratio.
  • the transmission torque capacity is maintained at the predetermined transmission torque capacity until the vehicle speed related value becomes equal to or less than the second predetermined vehicle speed related value, that is, the starting clutch is kept in a regulated state at the predetermined transmission torque capacity.
  • the transmission torque capacity can be quickly increased to the maximum transmission torque capacity without the start clutch being in a slipping state, and the feeling of rattling during re-acceleration can be suppressed. .
  • a gear stage at the time of starting corresponding to a gear ratio at the time of starting is established by engagement of the starting clutch and the one-way clutch, and the power of the engine is transmitted by fluid transmission.
  • the transmission torque capacity is gradually reduced in a state where the automatic transmission is at the current gear ratio, the fluid transmission device during the decelerating traveling is transmitted to the automatic transmission through a device.
  • the output rotational speed of the engine becomes equal to or lower than a second predetermined rotational speed near the idle rotational speed that is higher than the idle rotational speed of the engine, the transmission torque capacity is reduced so as to release the starting clutch.
  • the transmission torque capacity is kept at a second predetermined transmission torque capacity as low as possible so that the transmission torque capacity can be quickly increased when the accelerator is on,
  • Certain automatic transmission from a current gear to shift to any gear during the starting is switched from negative torque to positive torque due to a decrease in the vehicle speed, and it is possible to feel a shock in the gear of the driving system or to cause a sense of incongruity due to switching in the direction in which the driving force is output.
  • the transmission torque in the starting clutch is reduced to suppress such uncomfortable feeling.
  • the one-way clutch is idling in the gear stage at the time of starting, so that no driving force is generated and the above-mentioned uncomfortable feeling is avoided.
  • the automatic transmission is set to the gear ratio at the time of starting and the transmission torque capacity is held at the second predetermined transmission torque capacity. The feeling of slacking during acceleration can be suppressed.
  • the one-way clutch is in the idling state, so that the engagement shock does not occur even if the start clutch is suddenly engaged, and the start clutch has the second predetermined transmission torque capacity. In other words, the transmission torque capacity can be quickly increased because the motor is kept waiting in a regulated state.
  • the second predetermined transmission torque capacity is a transmission torque capacity as low as possible capable of transmitting the idle torque of the engine.
  • the shock of the gear of the drive train due to the output torque being switched from negative torque to positive torque, the sense of incongruity due to switching in the direction in which the drive force is output, etc. are appropriately suppressed.
  • the transmission torque capacity can be quickly increased.
  • FIG. 1 is a skeleton diagram illustrating a configuration of an automatic transmission provided in a vehicle to which the present invention is applied.
  • 2 is an operation chart for explaining a combination of operations of the friction engagement device when a plurality of gear stages of the automatic transmission of FIG. 1 are established.
  • FIG. 4 is a circuit diagram relating to a linear solenoid valve that controls the operation of each hydraulic actuator for clutches and brakes in the hydraulic control circuit of FIG. 3. It is a functional block diagram explaining the principal part of the control function of the electronic control apparatus of FIG.
  • FIG. 4 is a flowchart for explaining a control operation for executing a running N control while suppressing a main part of the control operation of the electronic control device of FIG. It is a time chart corresponding to the control action of FIG.
  • FIG. 9 is a time chart when the traveling N control is canceled during the control operation of FIG. 8, and is a diagram illustrating an example when returning from phase 1 control;
  • FIG. 9 is a time chart when the traveling N control is canceled during the control operation of FIG.
  • FIG. 9 is a time chart when the traveling N control is canceled during the control operation of FIG. 8, and is a diagram illustrating an example when returning from phase 3 control
  • FIG. 9 is a time chart when the traveling N control is canceled during the control operation of FIG. 8, and is a diagram illustrating an example when returning from phase 4 control;
  • a plurality of gear stages are alternatively achieved by selectively connecting rotating elements of a plurality of sets of planetary gear units by an engagement device.
  • Various planetary gear type automatic transmissions having four forward speeds, five forward speeds, six forward speeds, and more, and a pair of variable whose transmission diameters function as power transmission members are variable.
  • a so-called belt-type continuously variable transmission that is wound around a pulley and continuously changes its transmission ratio steplessly, a pair of cones that rotate around a common axis, and a plurality of rotation centers that can rotate around the axis
  • output Constituted by an automatic transmission capable of transmitting power to an electric motor is mounted on a hybrid vehicle of a so-called parallel type provided in such.
  • the mounting posture of the automatic transmission with respect to the vehicle may be a horizontal installation type such as an FF (front engine / front drive) vehicle in which the axis of the automatic transmission is in the width direction of the vehicle. It may be a vertical installation type such as an FR (front engine / rear drive) vehicle in the longitudinal direction.
  • FF front engine / front drive
  • FR front engine / rear drive
  • the engagement devices are all set in a slipping state or a releasing state in a known “R” or “D” position, or in an automatic transmission.
  • This is executed by forming a neutral state of the automatic transmission in which the power transmission path in the automatic transmission is interrupted, for example, by setting any one of the engagement devices for forming the gear stage to the slip state or the release state.
  • neutral control of a vehicle equipped with a belt type continuously variable transmission or a traction type continuously variable transmission includes well-known engagement devices and gear devices provided in a power transmission path from the engine to driving wheels.
  • a friction engagement device such as a multi-plate type or single plate type clutch or brake that is engaged by a hydraulic actuator is widely used.
  • the oil pump for supplying the hydraulic oil for engaging the hydraulic friction engagement device may be driven by a driving power source for traveling to discharge the hydraulic oil, but is disposed separately from the driving power source, for example. It may be driven by a dedicated electric motor provided.
  • the hydraulic control circuit including this hydraulic friction engagement device responds by supplying the output hydraulic pressure of a linear solenoid valve as an electromagnetic valve device directly to the hydraulic actuator (hydraulic cylinder) of the hydraulic friction engagement device, for example.
  • the shift control valve (shift control valve) is controlled by using the output hydraulic pressure of the linear solenoid valve as the pilot hydraulic pressure, and the hydraulic oil is supplied from the control valve to the hydraulic actuator. You can also.
  • the linear solenoid valve is provided, for example, corresponding to each of a plurality of hydraulic friction engagement devices, but a plurality of hydraulic solenoid valves that are not simultaneously engaged, engaged, or controlled to be released. When a friction engagement device exists, various modes are possible, such as providing a common linear solenoid valve for them.
  • the clutch or brake may be an electromagnetic engagement device such as an electromagnetic clutch or a magnetic powder clutch in addition to the hydraulic friction engagement device.
  • an internal combustion engine such as a gasoline engine or a diesel engine is widely used as the engine.
  • an electric motor or the like may be used in addition to this engine as a driving power source for auxiliary traveling.
  • supplying hydraulic pressure means “applying hydraulic pressure” or “supplying hydraulic oil controlled to the hydraulic pressure”.
  • FIG. 1 is a skeleton diagram illustrating the configuration of a vehicular automatic transmission 12 (hereinafter, automatic transmission 12) provided in a vehicle 10 to which the present invention is applied.
  • FIG. 2 is an operation table for explaining an operation state of the friction engagement device when a plurality of gear stages GS (shift stages GS) of the automatic transmission 12 is established.
  • This automatic transmission 12 is suitably used for an FF vehicle mounted in the left-right direction (horizontal) of the vehicle 10, and is a transaxle case 14 (hereinafter, case 14) as a non-rotating member attached to the vehicle body.
  • a first transmission unit 18 mainly composed of a single pinion type first planetary gear device 16, a double pinion type second planetary gear device 20, and a single pinion type third planetary gear device 22 are mainly used.
  • a Ravigneaux-type second transmission unit 24 on a common axis C, and the input shaft 26 is rotated and output from the output gear 28.
  • the input shaft 26 corresponds to an input rotating member of the automatic transmission 12.
  • the input shaft 26 is a turbine shaft of a torque converter 32 as a fluid transmission device that is rotationally driven by an engine 30 that is a driving force source for traveling. It is configured integrally with.
  • the output gear 28 corresponds to the output rotating member of the automatic transmission 12, and in this embodiment, for example, meshes with the diff ring gear 35 to transmit power to the differential gear device 34 shown in FIG.
  • the counter drive gears constituting the counter gear pair are engaged with the counter driven gear arranged coaxially with the differential drive pinion constituting the final gear pair.
  • the output of the engine 30 is output from the vehicle power transmission device 11 including the torque converter 32, the automatic transmission 12, the differential gear device 34, the pair of axles 36, and the like. Are sequentially transmitted to the left and right drive wheels 38 (see FIG. 3).
  • the automatic transmission 12 and the torque converter 32 are substantially symmetrical with respect to the center line (axial center) C, and the lower half of the axial center C is omitted in the skeleton diagram of FIG.
  • the torque converter 32 includes a pump impeller 32p connected to the crankshaft 31 of the engine 30, a turbine impeller 32t connected to the automatic transmission 12 via a turbine shaft (corresponding to the input shaft 26) of the torque converter 32, and
  • the stator impeller 32s is prevented from rotating in one direction by a one-way clutch, and power is transmitted between the pump impeller 32p and the turbine impeller 32t via a fluid. That is, in the torque converter 32 of the present embodiment, the pump impeller 32p corresponds to the input rotating member, and the turbine impeller 32t corresponds to the output rotating member, and the power of the engine 30 is transferred to the automatic transmission 12 side via the fluid. Communicated.
  • a lockup clutch 33 is provided between the pump impeller 32p and the turbine impeller 32t, that is, between the input and output rotating members of the torque converter 32. Further, the pump impeller 32p is supplied with an operating hydraulic pressure as a source pressure for controlling the shift of the automatic transmission 12, controlling the operation of the lockup clutch 33, or supplying lubricating oil to each part. A mechanical oil pump 40 generated by being driven to rotate by 30 is connected.
  • the automatic transmission 12 corresponds to the combination of any of the connected states of the rotating elements (sun gears S1 to S3, carriers CA1 to CA3, ring gears R1 to R3) of the first transmission unit 18 and the second transmission unit 24.
  • Six forward gear stages (forward shift stages) from the first speed gear stage “1st” to the sixth speed gear stage “6th” are established, and one reverse gear stage (reverse gear stage) of the reverse gear stage “R” is established. ) Is established.
  • the first speed gear stage is engaged by the engagement of the clutch C1 and the brake B2
  • the second speed gear stage is engaged by the engagement of the clutch C1 and the brake B1, and the clutch C1 is engaged.
  • the third gear is set by engagement with the brake B3, the fourth gear is set by engagement of the clutch C1 and the clutch C2, and the fifth gear is set by engagement of the clutch C2 and the brake B3.
  • the sixth gear is established by engaging the brake B1. Further, the reverse gear stage is established by the engagement of the brake B2 and the brake B3, and the neutral state is established by releasing any of the clutches C1, C2 and the brakes B1 to B3.
  • the operation table of FIG. 2 summarizes the relationship between each gear stage GS and the operation states of the clutches C1, C2 and the brakes B1 to B3, where “ ⁇ ” indicates engagement and “ ⁇ ” indicates engine braking. Only represents engagement. Since the one-way clutch F1 is provided in parallel to the brake B2 that establishes the first gear stage “1st”, it is not always necessary to engage the brake B2 when starting (acceleration). That is, it is sufficient to engage only the clutch C1 when starting, and for example, only the clutch C1 is engaged when returning from the neutral control described later. Thus, the clutch C1 functions as a starting clutch.
  • the clutches C1 and C2 and the brakes B1 to B3 are controlled by a hydraulic actuator such as a multi-plate clutch or a brake.
  • a hydraulic actuator such as a multi-plate clutch or a brake.
  • This is a hydraulic friction engagement device that transmits the motive power to the drive wheel 38 side.
  • the clutch C and brake B are engaged and disengaged by the excitation, de-excitation, and current control of the linear solenoid valves SL1 to SL5 (see FIGS. 3 and 4) in the hydraulic control circuit 110 and the engagement.
  • the transient engagement hydraulic pressure at the time of release is controlled.
  • FIG. 3 is a block diagram for explaining a main part of an electrical control system provided in the vehicle 10 for controlling the engine 30, the automatic transmission 12, and the like.
  • the vehicle 10 for example power transmission suppressing power transmission path from the engine 30 to lower the C1 clutch pressure P C1 is engaging pressure corresponding to the transmission torque capacity of the clutch C1 to the drive wheels 38
  • An electronic control device 50 including a control device capable of executing neutral control to be in a state is provided.
  • the electronic control unit 50 includes a so-called microcomputer having a CPU, a RAM, a ROM, an input / output interface, and the like, for example, and the CPU stores a program stored in the ROM in advance using a temporary storage function of the RAM.
  • Various control of the vehicle 10 is executed by performing signal processing according to the above.
  • the electronic control unit 50 performs output control of the engine 30, shift control of the automatic transmission 12, torque capacity control of the lockup clutch 33, and the like, and engine control for engine control is performed as necessary.
  • the apparatus is divided into a hydraulic control apparatus for shifting control of the automatic transmission 12, a hydraulic control apparatus for controlling hydraulic pressure of the lockup clutch 33, and the like.
  • a signal representing the hydraulic oil temperature TH OIL which is the temperature of the hydraulic oil (for example, a known ATF) in the hydraulic control circuit 110 detected by the hydraulic oil temperature sensor 52 is detected by the accelerator opening sensor 54.
  • a signal representative of the output speed N OUT is the rotational speed of the output gear 28 corresponding to the vehicle speed V detected by the vehicle speed sensor 66, in a foot brake operation is a service brake, which is detected by a brake switch 68 (depressing in ) Indicating the operation (brake on) B ON of the foot brake pedal 70, indicating the lever position (operation position, shift position) P SH of the shift lever 74 detected by the lever position sensor 72, turbine rotation speed sensor A signal representing an output rotational speed of the torque converter 32 detected by 76, that is, a turbine rotational speed N T that is a rotational speed of the turbine shaft (that is, an
  • the electronic control unit 50 for example, as an engine output control command signal S E for the output control of the engine 30, driving signals to a throttle actuator for controlling the opening and closing of the electronic throttle valve in accordance with the accelerator opening Acc
  • an injection signal for controlling the fuel injection amount injected from the fuel injection device, an ignition timing signal for controlling the ignition timing of the engine 30 by the igniter, and the like are output.
  • a hydraulic command signal to the linear solenoid valve SLT for Gosuru the regulation control such as the first line pressure P L1 is output .
  • the shift lever 74 is disposed in the vicinity of the driver's seat, for example, and is manually operated to five lever positions “P”, “R”, “N”, “D”, or “S” as shown in FIG. It has become so.
  • the “P” position (range) releases a power transmission path in the automatic transmission 12, that is, a neutral state (neutral state) in which the power transmission in the automatic transmission 12 is interrupted, and is mechanically output by the mechanical parking mechanism.
  • This is a parking position (position) for preventing (locking) the rotation of 28.
  • the “R” position is a reverse travel position (position) for making the rotation direction of the output gear 28 of the automatic transmission 12 reverse.
  • the “N” position is a neutral position (position) for achieving a neutral state in which power transmission in the automatic transmission 12 is interrupted.
  • the “D” position is a shift range (D range) that allows the automatic transmission 12 to shift, and uses all the forward gears from the first speed gear stage “1st” to the sixth speed gear stage “6th”. This is a forward travel position (position) at which automatic shift control is executed.
  • the “S” position is a forward travel position (position) in which manual shift can be performed by switching among a plurality of types of shift ranges that limit the change range of the gear steps, that is, a plurality of types of shift ranges with different gear ranges on the high vehicle speed side. is there.
  • the “D” position is an automatic transmission mode, which is a control mode in which automatic transmission control is performed in the range from the first gear to the sixth gear as shown in FIG.
  • the “S” position is a lever position to be selected, and the automatic transmission control is executed within a range not exceeding the highest speed gear of each shift range of the automatic transmission 12 and the shift changed by manual operation of the shift lever 74
  • It is also a lever position for selecting a manual shift mode that is a control mode in which the manual shift control is executed based on the range (that is, the highest speed gear stage).
  • the shift range on the highest speed side is set (shift range fixed) by operating the shift lever 74 to the “S” position, but based on the operation of the shift lever 74.
  • the gear position (gear stage) may be designated (gear stage fixed). In this case, every time a manual shift operation is performed in the automatic transmission 12, the shift control is executed so that a desired gear stage corresponding to the operation is obtained.
  • FIG. 4 shows a main part of the hydraulic control circuit related to the linear solenoid valves SL1 to SL5 for controlling the operations of the hydraulic actuators (hydraulic cylinders) ACT1 to ACT5 of the clutches C1 and C2 and the brakes B1 to B3 in the hydraulic control circuit 110.
  • the hydraulic pressure supply device 112 adjusts the first line hydraulic pressure P L1 using the hydraulic pressure generated from the mechanical oil pump 40 (see FIG. 1) that is rotationally driven by the engine 30 as a source pressure.
  • a linear solenoid valve SLT for supplying P SLT, first line pressure P L
  • a modulator valve 118 for pressurizing is regulated to a constant value a modulator pressure P M as source pressure.
  • the hydraulic pressure supply device 112 includes a manual valve 120 that can switch an oil path mechanically or electrically based on an operation of the shift lever 74.
  • the manual valve 120 for example, when the shift lever 74 is operated to the "D" position or “S” position, outputs the first line pressure P L1 inputted as a drive oil pressure P D, the shift lever 74 is "R when operated to "position, and outputs the first line pressure P L1 inputted as a reverse pressure P R, when the shift lever 74 is operated to the" P "position or the” N “position, shuts off the hydraulic pressure of the output to (leads to drive hydraulic P D and the reverse hydraulic P R to the discharge side).
  • the hydraulic pressure supply device 112 the first line pressure P L1, second line pressure P L2, modulator pressure P M, and outputs a drive oil pressure P D, and reverse hydraulic P R.
  • the hydraulic control circuit 110 is provided with linear solenoid valves SL1 to SL5 (hereinafter referred to as linear solenoid valves SL unless otherwise specified) corresponding to the hydraulic actuators ACT1 to ACT5.
  • Hydraulic actuators ACT1, ACT2, ACT3, the ACT5, the corresponding linear solenoid valve SL1, SL2, SL3, SL5, the drive oil pressure P D supplied from each of the hydraulic pressure supply device 112 is the command signal from the electronic control unit 50
  • the pressures are adjusted to C1 clutch pressure P C1 , C2 clutch pressure P C2 , B1 brake pressure P B1 , and B3 brake pressure P B3 , which are the engagement hydraulic pressures (clutch pressure, brake pressure) according to (hydraulic command value), respectively.
  • each hydraulic actuator ACT4 adjusts the first line hydraulic pressure P L1 supplied from the hydraulic pressure supply device 112 to the B2 brake pressure P B2 corresponding to the command signal from the electronic control device 50 by the corresponding linear solenoid valve SL4. Pressurized and supplied directly.
  • the hydraulic actuator ACT5 brake B3, either the B3 brake pressure P B3 or the reverse hydraulic pressure P R pressure regulated by the linear solenoid valve SL5 is adapted to be supplied via the shuttle valve 122.
  • the linear solenoid valves SL1 to SL5 basically have the same configuration, and the hydraulic pressure supplied to the hydraulic actuators ACT1 to ACT5 is independently controlled by the electronic control unit 50, independently excited, de-energized, and current controlled.
  • the clutch C1 as an example, C1 clutch pressure P C1 corresponding to the drive current I SL1 corresponding to the hydraulic pressure command value output from the electronic control unit 50 is output from the linear solenoid valve SL1.
  • each gear stage GS is established by engaging a predetermined engagement device as shown in the engagement operation table of FIG.
  • a so-called clutch-to-clutch shift is performed by, for example, re-engaging the disengagement side frictional engagement device and the engagement side frictional engagement device of the clutch C and brake B involved in the shift.
  • the engagement transient engagement hydraulic pressure of the release side frictional engagement device and the engagement side frictional engagement device of the engagement side frictional engagement device are set so that the shift is executed as quickly as possible while suppressing the shift shock.
  • the engagement transient engagement hydraulic pressure is appropriately controlled. For example, as shown in the engagement operation table of FIG.
  • FIG. 5 is a functional block diagram for explaining the main part of the control function by the electronic control unit 50.
  • the engine output control unit that is, the engine output control means 80 controls the fuel injection amount by the fuel injection device for the fuel injection amount control, in addition to controlling the opening and closing of the electronic throttle valve by the throttle actuator for the throttle control, for example. and outputs an engine output control command signal S E for controlling the ignition device such as an igniter for ignition timing control.
  • the engine output control means 80 the estimated value of the engine rotational speed N E and engine torque T E and the throttle valve opening theta TH as shown in FIG.
  • T E as a parameter (hereinafter estimated engine torque) in advance experiments with T E ' manner sought controls the opening and closing of the electronic throttle valve so that the throttle valve opening theta TH which target engine torque T E * obtained based on the actual engine rotational speed N E from the stored relationship (engine torque map)
  • the fuel injection amount by the fuel injection device is controlled, and an ignition device such as an igniter is controlled.
  • the target engine torque T E * is determined by the electronic control unit 50 so as to increase as the accelerator opening Acc increases, for example, based on the accelerator opening Acc corresponding to the requested acceleration amount.
  • parameters corresponding to other engine loads such as the intake air amount Q may be used instead of the throttle valve opening ⁇ TH .
  • the shift control unit that is, the shift control means 82, for example, from the relationship (shift map, shift map) stored in advance with the vehicle speed V and the accelerator opening Acc as variables as shown in FIG.
  • the shift determination is performed based on the vehicle state indicated by, and it is determined whether or not the shift of the automatic transmission 12 should be executed.
  • the shift control means 82 determines a gear stage to be shifted in the automatic transmission 12, and outputs a shift command for executing the automatic shift control of the automatic transmission 12 so that the determined gear stage is obtained.
  • the shift control means 82 engages and / or releases the hydraulic friction engagement device involved in the shift of the automatic transmission 12 so that the gear stage is achieved according to the engagement table shown in FIG. command signal and outputs the (shift output command value) S P to the hydraulic control circuit 110.
  • the solid line is a shift line (upshift line) for determining an upshift
  • the broken line is a shift line (downshift line) for determining a downshift.
  • the shift line in the shift map of FIG. 7 is, for example, whether or not the actual vehicle speed V crosses the line on the horizontal line indicating the actual accelerator opening Acc (%), that is, the value (shift point to be changed) on the shift line. This is for determining whether or not the vehicle speed (V S ) has been exceeded, and is also stored in advance as a series of this value V S, that is, the shift point vehicle speed.
  • the hydraulic control command signal SP is a torque command value for controlling the engagement hydraulic pressure (clutch pressure, brake pressure) corresponding to the transmission torque capacity (clutch torque, brake torque, engagement torque) of the clutch C or the brake B. That is, a hydraulic pressure command value for generating an engagement hydraulic pressure that obtains a necessary transmission torque capacity, for example, a necessary value for releasing the release side frictional engagement device as a torque command value of the release side frictional engagement device.
  • a hydraulic pressure command value for discharging hydraulic oil is output so that a transmission torque capacity can be obtained, and a necessary value for engaging the engagement side frictional engagement device as a torque command value of the engagement side frictional engagement device.
  • a hydraulic pressure command value to which hydraulic oil is supplied so as to obtain a transmission torque capacity is output.
  • an engagement hydraulic pressure that can maintain a frictional force that can withstand the transmission input torque TIN (that is, can secure a transmission torque capacity) is generated.
  • the hydraulic pressure command value is output.
  • the hydraulic control circuit 110 in accordance with the hydraulic pressure control command signal S P by the shift control unit 82, so as the shift of the automatic transmission 12 is executed, or the current gear position GS of the automatic transmission 12 is maintained,
  • the linear solenoid valves SL1 to SL5 in the hydraulic control circuit 110 are operated to operate the hydraulic actuators ACT1 to ACT5 of the hydraulic friction engagement device involved in the establishment (formation) of the gear stage GS.
  • the transmission input torque TIN is, for example, torque input to the automatic transmission 12 via the torque converter 32, that is, transmission torque transmitted to the input side of the clutch C1.
  • neutral control is executed to reduce the idling load of the engine 30 while the vehicle is stopped.
  • this neutral control for example, when a predetermined neutral control condition set in advance is satisfied, the power transmission path in the automatic transmission 12 is suppressed by setting the clutch C1, which is a starting clutch, to a predetermined slip state or released state.
  • This is control for setting the state (that is, the state substantially equivalent to the power transmission cutoff state or the power transmission cutoff state).
  • the predetermined slip state of the clutch C1 is a state equivalent to a disengaged state in which there is a slight slip but little engagement load is generated, that is, there is almost no transmission torque capacity.
  • the neutral control condition determination unit determines whether or not a predetermined neutral control condition is satisfied at the travel position of the shift lever 74, for example. That is, the neutral control condition determination means 84 is a neutral control execution determination means that sequentially determines whether or not to start execution of neutral control by determining whether or not a predetermined neutral control condition is satisfied.
  • the predetermined neutral control condition is, for example, that the vehicle 10 is stopped, the accelerator pedal 56 is not depressed, and the foot brake pedal 70 is depressed.
  • the neutral control condition determination means 84 is a predetermined vehicle speed zero determination value for determining whether the vehicle is stopped, and the accelerator opening Acc is accelerator-off.
  • a predetermined opening degree zero determination value for determination and a signal indicating operation (ON) B ON is output from the brake switch 68, it is determined that the neutral control condition is satisfied.
  • the neutral control condition determining means 84 determines whether or not to release (end) the neutral control by determining whether or not the predetermined neutral control condition is satisfied during the neutral control by the neutral control means 86 described later. This is also a neutral control release determination means for sequentially determining whether or not to return from neutral control.
  • the neutral control condition determining unit 84 is a predetermined unit that determines that, for example, the lever position P SH is operated from the “D” position or the accelerator pedal 56 is depressed during the neutral control by the neutral control unit 86. In the case of brake-off in which the signal indicating the operation (ON) B ON is no longer output from the brake switch 68 or the brake opening is not made, the neutral control release start is determined.
  • the neutral control unit changes the first speed gear stage.
  • a neutral control execution command for setting the clutch C1, which is an engagement device to achieve, to a predetermined slip state or release state is output to the shift control means 82, and the power transmission path including the automatic transmission 12 is set to the power transmission suppression state or Neutral control (N control) is executed to cut off the power transmission.
  • the shift control means 82 sets a predetermined release pattern as a set pressure during normal N control that is set in advance to bring the clutch C1 into a predetermined slip state or release state, that is, a hydraulic command for the clutch C1. outputting a clutch release command to lower the C1 clutch pressure P C1 to the hydraulic control circuit 110 according to the value S PC1.
  • a predetermined release pattern as a set pressure during normal N control that is set in advance to bring the clutch C1 into a predetermined slip state or release state, that is, a hydraulic command for the clutch C1.
  • the clutch C1 is brought into a released state (or a state just before engaging so as to be slightly slip-engaged), so that the power transmission path in the automatic transmission 12 is substantially released.
  • a start standby state in which the vehicle can start immediately by switching from half-engagement to engagement of the clutch C1 is set.
  • the neutral control unit 86 sets the power transmission path including the automatic transmission 12 in a power transmission enabled state.
  • the shift control means 82 is a predetermined engagement pattern as a set pressure at the time of releasing the normal N control that is set in advance to bring the clutch C1 into the engaged state in accordance with the neutral control release command, that is, the hydraulic pressure command value S of the clutch C1. It outputs a clutch engagement command to raise the C1 clutch pressure P C1 to the hydraulic control circuit 110 according to PC1.
  • the N control is executed while the vehicle is stopped.
  • the N control is performed not only when the vehicle is stopped, but also when the vehicle is running, for example, when the vehicle is decelerated with the accelerator off. Is desired to perform.
  • N control N running control
  • the N control normal N control
  • the engine braking force decreases during decelerating running. There may be a sense of incongruity due to a change in the deceleration at.
  • the same return control as when re-starting from the stop of the vehicle is performed.
  • the drive torque rises due to the response delay of clutch engagement at the time of re-acceleration.
  • the engagement shock will increase if the feeling of stickiness becomes larger than that at the time of restart, and if clutch engagement is made earlier in order to suppress the feeling of stickiness.
  • N control is started while the vehicle is running, fuel efficiency can be improved. there is a possibility.
  • the following control method (control idea) is introduced in order to solve the above problems.
  • the N control during traveling is set to As shown in FIG. 4, it is divided into four states (four phases). Then, hydraulic control is performed in consideration of accelerator depressing according to each state.
  • the term “clutch” includes the clutch C and the brake B
  • the term “clutch pressure” corresponding to the transmission torque capacity of the clutch includes the clutch pressure and the brake pressure.
  • phase 1 control for example, the current gear stage GS is formed while the accelerator stage is decelerated while the gear stage GS of the automatic transmission 12 is established.
  • the starting clutch that is the clutch, that is, the clutch C1, and the other clutch that forms the current gear stage GS are both brought into a pressure-controlled state. This is performed as a preparation for executing the control of the state [2] to be described later, that is, a preparation for starting the gradual decrease of the clutch pressure in the control of the state [2]. Therefore, here, the clutch pressure is set so as not to slip even if the accelerator is depressed again.
  • the clutch pressure of the clutch that forms the current gear stage GS is different from each clutch even if the accelerator is turned on from each maximum clutch pressure corresponding to each maximum transmission torque capacity for complete engagement of each clutch.
  • the clutch pressure is reduced to each predetermined clutch pressure ⁇ corresponding to each predetermined transmission torque capacity that has been experimentally obtained and set in advance as a clutch pressure that does not cause rotation.
  • the clutch pressure of each clutch forming the current gear stage GS is maintained at the predetermined clutch pressure ⁇ .
  • slip differential rotation
  • the current gear stage GS is formed as it is without clutch slipping, and the uncomfortable feeling due to the change in deceleration, the feeling of jerking at the time of reacceleration, the engagement shock at the time of releasing the N control, etc. are suppressed.
  • the current gear stage GS is preferably formed by at least the engagement of the starting clutch, that is, the clutch C1, the vehicle speed V at which the first to fourth gear stages are formed during deceleration. The following may be used as a condition for starting the state [1].
  • predetermined reset engine speed N E and the predetermined recovery turbine rotating the fuel cut control may be a condition for starting the state [1] which is equal to or less than the engine speed N E and the turbine rotational speed N T as below the speed N T.
  • the vehicle speed V will be considered.
  • the vehicle speed V is represented by the output rotational speed N OUT , but the rotational speed that uniquely corresponds to the vehicle speed V (N OUT ) on a one-to-one basis is treated as an agreement with the vehicle speed V as a vehicle speed related value.
  • the turbine rotation speed N T (input rotation speed N IN ) uniquely restricted by the rotation on the drive wheel 38 side, the axle 36
  • phase 2 control for example, when the current gear ratio input rotational speed N INN becomes equal to or lower than the predetermined rotational speed 2 as the second predetermined vehicle speed related value during reduced speed traveling.
  • the C1 clutch pressure is gradually decreased from the predetermined clutch pressure ⁇ according to the decrease in the vehicle speed V, that is, gradually decreased, and the clutch C1 is brought into a sliding state.
  • This gradual decrease of the C1 clutch pressure is, for example, control for weakening the engine braking force. Therefore, considering at what time point the gradual decrease is started and the gradient is gradually decreased, the uncomfortable feeling due to the change in deceleration is suppressed.
  • a decrease gradient corresponding to a decrease in the vehicle speed V of the C1 clutch pressure at the time of the predetermined rotation 2 or gradual decrease is experimentally obtained and set in advance.
  • the phase 2 control is, for example, a process of gradually bringing the output torque T OUT (eg, deceleration torque including engine brake torque (negative torque)) closer to zero.
  • the clutch C1 is in a weak slip state (weak slip state), so that blow (rotation increase) of the turbine rotational speed NT may occur. There is sex.
  • the C1 clutch pressure is increased more than in the case of the state [1], and the torque fluctuation is smoothed by the fluctuation of the output torque TOUT .
  • the C1 clutch pressure is increased to the maximum clutch pressure with a predetermined rising gradient that is experimentally obtained in advance and set so as to suppress the engagement shock while suppressing the blow of the turbine rotational speed NT .
  • the clutch pressure is quickly increased to the maximum clutch pressure. Therefore, in this phase 2 control, the clutch C1 is brought into the slip state, so that the turbine rotational speed NT is changed to the idle rotational speed N EIDL of the engine 30 at a changing speed faster than the decreasing speed of the current gear ratio input rotational speed N INN.
  • phase 3 control for example, when the C1 clutch pressure is gradually decreased with the automatic transmission 12 in the current gear stage GSN, the vehicle is decelerating.
  • the actual turbine rotational speed NT becomes equal to or lower than the second predetermined rotational speed (N EIDL + ⁇ ) in the vicinity of the idle rotational speed N EIDL higher than the idle rotational speed N EIDL of the engine 30, the clutch C1 is released.
  • the C1 clutch pressure is reduced.
  • the C1 clutch pressure is kept at the lowest hydraulic pressure that can be adjusted.
  • the C1 clutch pressure is held at the second predetermined clutch pressure ⁇ corresponding to the second predetermined transmission torque capacity as low as possible so that the C1 clutch pressure can be quickly increased to the maximum clutch pressure when the accelerator is on.
  • the second predetermined rotation speed (N EIDL + ⁇ ) is, for example, when the turbine rotation speed N T is lower than the engine rotation speed N E maintained at the idle rotation speed N EDL during deceleration traveling, the output torque T OUT becomes a negative torque.
  • the torque of the drive system is changed to a positive torque, and there is a possibility of causing a sense of incongruity due to the shock of the gears of the drive train or switching in the direction in which the drive force is generated.
  • a predetermined value is set to define the point in time when the transmission of the driving force is shut down, and a predetermined margin ⁇ is added to the idle rotational speed NEIDL .
  • the second predetermined clutch pressure ⁇ is previously tested as a clutch pressure as low as possible within a range in which the idle torque T EIDL output when the engine 30 is maintained at the idle rotation speed N EIDL can be transmitted. This is the clutch pressure that is determined and set automatically.
  • the automatic transmission 12 is moved from the current gear stage GSN to the gear stage GSS ( That is, the gear is shifted to the first gear.
  • the shift output is set to the first gear, and the clutch C1 is kept in a pressure-controlled state.
  • the clutch C1 is kept in a pressure-controlled state.
  • the starting gear ratio input rotational speed N INS is higher than the actual turbine rotational speed NT and the one-way clutch F1 is idling, for example, even if some transmission torque is generated in the clutch C1, the driving is performed.
  • a sense of incongruity caused by the fact that the driving force is not transmitted to the driving wheel and the driving force is switched in the direction in which the driving force is generated is avoided.
  • the accelerator when the accelerator is stepped on again in this state [3], for example, the one-way clutch F1 is in an idling state, and the sudden engagement shock is generated even if the clutch C1 is roughly grasped, that is, suddenly engaged. Therefore, the C1 clutch pressure is quickly increased from the second predetermined clutch pressure ⁇ to the maximum clutch pressure.
  • the automatic transmission 12 may be in the first speed gear stage and the clutch C1 may be kept in a regulated state at the second predetermined clutch pressure ⁇ , so that the C1 clutch pressure can be increased more quickly.
  • phase 3 control a sense of incongruity due to a change in deceleration, a feeling of rattling at the time of reacceleration, an engagement shock at the time of releasing N control, and the like are suppressed.
  • phase 4 control for example, when the C1 clutch pressure is held at the second predetermined clutch pressure ⁇ , the starting gear ratio input rotational speed during deceleration traveling When N INS is equal to or lower than a predetermined rotational speed (N EIDL + ⁇ ) as a predetermined vehicle speed-related value in the vicinity of the idle rotational speed N EIDL higher than the idle rotational speed N EIDL of the engine 30, the automatic transmission 12 is The C1 clutch pressure is reduced so that the clutch C1 is completely released in the state of the high gear.
  • the C1 clutch pressure is reduced.
  • the predetermined rotational speed (N EIDL + beta) for example when starting the gear ratio input speed N INS falls below the engine rotational speed N E to be maintained during deceleration to idle rotation speed N EIDL, input side (engine 30 side ) Is switched to the direction of rotationally driving the output side (drive wheel 38 side), and the positive torque of the output torque T OUT is transmitted to the drive wheel 38 side, whereas the clutch C1 is completely released to transmit the driving force.
  • I is a predetermined value that is set to define the time point when the engine is completely shut down, and a predetermined margin ⁇ is added to the idle rotation speed NEIDL .
  • the C1 clutch pressure is increased from zero (for example, near the piston end pressure) to the maximum clutch pressure while controlling the blowing amount of the turbine rotational speed NT , as in the case of the normal N control cancellation. Therefore, in this phase 4 control, a sense of incongruity due to a change in deceleration, a feeling of rattling during reacceleration, an engagement shock when releasing N control, and the like are suppressed.
  • the predetermined rotational speed (N EIDL + ⁇ ) as the predetermined vehicle speed-related value and the predetermined rotational speed 2 as the second predetermined vehicle speed-related value have different rotational speeds to be determined (starting gear ratio input rotational speed N INS). differs between the current gear ratio input speed N INN), if able to re terms of the vehicle speed V (N OUT), towards the predetermined rotation 2 is high it is needless to say than the predetermined rotational speed (N EIDL + ⁇ ).
  • the neutral control condition determining means 84 determines whether or not a predetermined traveling N control condition is satisfied at the traveling position of the shift lever 74, for example.
  • the neutral control condition determination means 84 sequentially determines whether or not the execution of the running N control is started by determining whether or not a predetermined running N control condition is satisfied. It is a determination means.
  • the predetermined traveling N control condition is, for example, that the vehicle is traveling and the accelerator pedal 56 is not depressed.
  • the neutral control condition determining unit 84 is running N when the accelerator opening Acc is a predetermined opening zero determination value for determining accelerator off. It is determined that the control condition is satisfied.
  • the neutral control condition determination means 84 cancels the running N control by determining whether or not the predetermined running N control condition is satisfied during the running N control by the neutral control means 86 described later. It is also a traveling N control release determination means that sequentially determines whether or not (end) is performed, that is, sequentially determines whether or not to return from the traveling N control. For example, the neutral control condition determination unit 84 determines that, for example, the lever position P SH is operated from the “D” position or the accelerator pedal 56 is depressed during the N control during traveling by the neutral control unit 86. When it becomes equal to or greater than a predetermined accelerator opening determination value, it is determined whether or not to cancel the N control during traveling.
  • the traveling N control progress determination unit that is, the traveling N control progress determination means 88, for example, when the neutral control condition determination means 84 determines that the predetermined traveling N control condition is satisfied, the actual turbine It is determined whether or not the rotation speed NT is equal to or less than a predetermined rotation 1.
  • the predetermined rotation 1 is one of the conditions for substantially starting the N control during traveling (control in the above state [1]) by the neutral control means 86, and is, for example, the first gear stage GS during deceleration traveling.
  • This is a predetermined turbine rotational speed NT ′ that is experimentally determined and set in advance as the turbine rotational speed NT corresponding to the vehicle speed V at which the first to fourth gear stages are formed.
  • the predetermined rotation 1 for example, when a known fuel cut control during deceleration running is performed is below a predetermined reset engine speed N E for the fuel cut control is released is a predetermined turbine speed N T ', which is set preliminarily obtained experimentally as a turbine rotational speed N T corresponding to the engine rotational speed N E as.
  • the running N control progress determination means 88 determines whether or not the current gear ratio input rotational speed N INN is equal to or less than a predetermined rotation 2 during execution of the phase 1 control by the neutral control means 86 described later, for example. To do. In addition, the running N control progress determination means 88 determines that the actual turbine rotational speed NT is equal to or lower than the second predetermined rotational speed (N EIDL + ⁇ ), for example, during execution of the phase 2 control by the neutral control means 86 described later. It is determined whether or not.
  • the running N control progress determination means 88 for example, during execution of the phase 3 control by the neutral control means 86 described later, the starting gear ratio input rotation speed N INS becomes equal to or less than a predetermined rotation speed (N EIDL + ⁇ ). It is determined whether or not.
  • the neutral control means 86 determines that the actual turbine rotational speed NT is equal to or lower than the predetermined rotation 1 by the running N control progress determination means 88, the clutch of the clutch that forms the current gear stage GS.
  • a phase 1 control execution command for rapidly decreasing the clutch pressure from the maximum clutch pressure to each predetermined clutch pressure ⁇ is output to the shift control means 82, and the phase 1 control is executed, that is, the running N control is substantially started. To do.
  • the neutral control means 86 determines that the current gear ratio input rotation speed N INN has become equal to or less than the predetermined rotation 2 during execution of the phase 1 control, for example, by the running N control progress determination means 88.
  • a phase 2 control execution command for gradually decreasing the C1 clutch pressure from the predetermined clutch pressure ⁇ according to the decrease in the vehicle speed V is output to the shift control means 82, and the phase 2 Execute control.
  • the neutral control means 86 determines that the actual turbine rotational speed NT has become equal to or lower than the second predetermined rotational speed (N EIDL + ⁇ ) during the execution of the phase 2 control, for example, by the running N control progress determination means 88.
  • phase 3 control execution command for shifting the automatic transmission 12 from the current gear stage GSN to the first gear stage is issued while the C1 clutch pressure is quickly reduced to be kept at the second predetermined clutch pressure ⁇ .
  • the neutral control means 86 determines that the starting gear ratio input rotational speed N INS is equal to or lower than a predetermined rotational speed (N EIDL + ⁇ ) during the execution of the phase 3 control, for example, by the traveling N control progress determination means 88.
  • the C1 clutch pressure is quickly turned from the second predetermined clutch pressure ⁇ to zero (for example, the piston end pressure) so as to completely release the clutch C1 with the automatic transmission 12 in the first speed gear stage.
  • a phase 4 control execution command to reduce is output to the shift control means 82, and the phase 4 control is executed.
  • the neutral control means 86 for example, when the neutral control condition determination means 84 determines that the running N control is released during the execution of the phase 1 control, the clutch of the clutch that forms the current gear stage GS is determined. A phase 1 control release command for quickly increasing the clutch pressure from each predetermined clutch pressure ⁇ in the regulated state to the maximum clutch pressure is output to the shift control means 82, and the N control during traveling is released. Further, for example, when the neutral control condition determination unit 84 determines that the running N control is cancelled during execution of the phase 2 control, the neutral control unit 86 is engaged while suppressing the blowing of the turbine rotational speed NT.
  • the clutch pressure of the other clutch forming the current gear stage GS is increased while the C1 clutch pressure is increased to the maximum clutch pressure at a predetermined rising gradient that is experimentally obtained in advance so as to suppress the combined shock. Is output to the shift control means 82, and the running N control is released. Further, for example, when the neutral control condition determination unit 84 determines that the running N control is started to be released during the execution of the phase 3 control, the neutral control unit 86 quickly adjusts the C1 clutch pressure in the pressure adjustment state. (2) A phase 3 control release command for increasing the clutch pressure ⁇ from the predetermined clutch pressure ⁇ to the maximum clutch pressure is output to the shift control means 82 to release the N control during traveling.
  • the neutral control unit 86 when the neutral control condition determining unit 84 determines that the running N control release is started during the execution of the phase 4 control, the neutral control unit 86 outputs a neutral control release command when the normal N control is released. Similarly, a phase 4 control release command for increasing the C1 clutch pressure from zero (for example, near the piston end pressure) to the maximum clutch pressure while controlling the blow rate of the turbine rotational speed NT is output to the shift control means 82 to drive the vehicle. Release medium N control.
  • FIG. 8 is a flowchart illustrating a control operation of the electronic control device 50, that is, a control operation for executing the N control during traveling while suppressing a decrease in drivability.
  • the control operation is about several msec to several tens msec. It is executed repeatedly with a very short cycle time.
  • FIG. 9 is a time chart corresponding to the control operation of FIG.
  • FIGS. 10 to 13 are time charts when the N control during traveling is canceled during the control operation of FIG. 8.
  • FIG. 10 shows a case of returning from the phase 1 control
  • FIG. When returning FIG. 12 is a diagram showing an example of returning from phase 3 control
  • FIG. 13 is a view showing an example of returning from phase 4 control. Note that the thin solid line in FIGS. 10 to 13 shows the change of each value in FIG. 9 as it is for comparison.
  • S10 corresponding to the neutral control condition determining means 84, it is determined whether or not a predetermined traveling N control condition is satisfied at the traveling position of the shift lever 74, for example. If the determination in S10 is negative, this routine is terminated. If the determination is affirmative, in S20 corresponding to the running N control progress determination means 88, for example, the actual turbine rotational speed NT is equal to or less than a predetermined rotation 1. It is determined whether or not. If the determination in S20 is negative, the routine is terminated. If the determination is positive, in S30 corresponding to the neutral control means 86, for example, the clutch pressure of the clutch forming the current gear stage GS is set to the maximum clutch pressure.
  • phase 1 control is executed, that is, the running N control is substantially started (time t1 in FIG. 9).
  • S40 corresponding to the traveling N control progress determination means 88, it is determined whether or not the current gear ratio input rotational speed NINN is equal to or lower than a predetermined rotation 2, for example. If the determination in S40 is negative, this routine is terminated. If the determination is positive, in S50 corresponding to the neutral control means 86, for example, the C1 clutch is maintained while maintaining the current gear stage GSN of the automatic transmission 12.
  • Phase 2 control for gradually decreasing the pressure from the predetermined clutch pressure ⁇ according to the decrease in the vehicle speed V is executed (at time t2 in FIG. 9).
  • phase 3 control for shifting the automatic transmission 12 from the current gear stage GSN to the first gear stage is executed (at time t3 in FIG. 9). Note that if it is determined that the N-control during travel is started when the determination in S60 is negative (from time t2 to time t3 in FIG. 11), for example, the C1 clutch pressure is increased to the maximum clutch with a predetermined upward gradient.
  • the N control during traveling is released by releasing the phase 2 control that increases the pressure to the maximum pressure and at the same time quickly increases the clutch pressure of the other clutch forming the current gear stage GS to the maximum clutch pressure.
  • S80 corresponding to the traveling N control progress determination means 88 it is determined whether, for example, the starting gear ratio input rotational speed N INS is equal to or lower than a predetermined rotational speed (N EIDL + ⁇ ). If the determination in S80 is negative, this routine is terminated. If the determination is positive, in S90 corresponding to the neutral control means 86, for example, the clutch C1 is engaged with the automatic transmission 12 in the first gear.
  • Phase 4 control is executed to quickly decrease the C1 clutch pressure from the second predetermined clutch pressure ⁇ toward zero (for example, piston end pressure) so as to be completely released (at time t4 in FIG. 9).
  • zero for example, piston end pressure
  • the C1 clutch pressure is quickly adjusted in the first pressure adjustment state. 2.
  • the N control during traveling is canceled by releasing the phase 3 control for increasing the clutch pressure ⁇ from the predetermined clutch pressure ⁇ to the maximum clutch pressure.
  • the running N control is released during the execution of S90 (time t4 to time t5 in FIG.
  • the C1 clutch pressure is gradually reduced (phase 2 control) while the automatic transmission 12 is in the current gear stage GSN while the accelerator is off, and the vehicle is decelerated.
  • C1 clutch so that the clutch C1 is completely released in the state where the automatic transmission 12 is in the first gear when the starting gear ratio input rotational speed N INS is less than a predetermined rotational speed (N EIDL + ⁇ ). Since the pressure is reduced (phase 4 control), for example, when the vehicle speed V is at a certain level, the output torque T OUT (for example, engine brake torque) is gradually decreased as the C1 clutch pressure gradually decreases, and the driver feels uncomfortable due to the change in deceleration. It is suppressed.
  • the clutch C1 when the vehicle speed V is at a certain level, the clutch C1 is in a slipping state, and when releasing the N control during traveling by turning on the accelerator, it is possible to suppress the engagement shock and suppress the feeling of rattling during reacceleration. it can. Further, for example, since the output torque T OUT tends to be substantially zero due to a decrease in the C1 clutch pressure, even if the clutch C1 is completely released during deceleration traveling, the uncomfortable feeling due to the change in deceleration is suppressed.
  • the automatic transmission 12 is set to the first speed gear stage and the clutch C1 is released.
  • the N control is released in the same manner as when the vehicle starts after the vehicle stops, so that it is possible to suppress the feeling of rattling during re-acceleration while suppressing the engagement shock. Therefore, it is possible to further improve fuel efficiency by executing neutral control while the vehicle is traveling while suppressing a decrease in drivability.
  • the output torque T OUT is switched from negative torque to positive torque during decelerating travel (for example, from the state where the drive wheel 38 side rotates along with the input side of the automatic transmission 12, the input side of the automatic transmission 12 moves from the drive wheel 38. since the place in) the clutch C1 is switched to a state to turn the side is released, are prevented from negative torque is reduced towards substantially zero switched to positive torque by lower C1 clutch pressure, discomfort due to the output torque T OUT changes Is suppressed.
  • the C1 clutch pressure is reduced to the clutch C1 prior to gradually decreasing the C1 clutch pressure (phase 2 control) with the automatic transmission 12 at the current gear stage GSN.
  • the C1 clutch pressure is maintained at the predetermined clutch pressure ⁇ (phase 1 control) until the following is reached, it is possible to quickly shift to the phase 2 control, for example.
  • the C1 clutch pressure is maintained at the predetermined clutch pressure ⁇ , that is, the clutch C1 is kept in a regulated state at the predetermined clutch pressure ⁇ . Therefore, when the N control is canceled while the accelerator is on, the C1 clutch pressure can be quickly increased to the maximum clutch pressure without the clutch C1 being in a slip state, thereby suppressing the feeling of rattling during re-acceleration. it can.
  • the clutch C1 when the actual turbine rotational speed NT during deceleration traveling is equal to or lower than the second predetermined rotational speed (N EIDL + ⁇ ) during the execution of the phase 2 control, the clutch C1 is used. Prior to lowering the C1 clutch pressure so as to release (phase 4 control), the C1 clutch pressure is as low as possible so that the C1 clutch pressure can be quickly increased to the maximum clutch pressure when the accelerator is on. While maintaining the predetermined clutch pressure ⁇ , the automatic transmission 12 is shifted from the current gear stage GSN to the gear stage GSS at the time of starting (that is, the first gear stage) (phase 3 control).
  • the output torque T oUT is switched from the negative torque to positive torque, it switched to the direction to which the driving force or feel shock of backlash of the driving system gears exits
  • the transmission torque in the clutch C1 is their discomfort, etc.
  • the one-way clutch F1 is idling in the first speed gear stage, so that no driving force is generated and the above-mentioned uncomfortable feeling is avoided.
  • the automatic transmission 12 is set to the first speed gear stage, and the C1 clutch pressure is held at the second predetermined clutch pressure ⁇ . It is possible to suppress the feeling of stickiness during re-acceleration.
  • the one-way clutch F1 is idling, so that even if the clutch C1 is suddenly engaged, no engagement shock is generated, and the clutch C1 has the second predetermined clutch pressure ⁇ .
  • the C1 clutch pressure can be quickly increased because the engine is on standby in the pressure regulation state.
  • the second predetermined clutch pressure ⁇ is a clutch pressure as low as possible capable of transmitting the idle torque T EIDL of the engine 30, and therefore, for example, the output torque T OUT is positive from the negative torque.
  • the shock of the gear of the driving system due to switching to torque, the uncomfortable feeling due to switching in the direction in which the driving force is generated, and the like are appropriately suppressed.
  • the C1 clutch pressure can be quickly increased.
  • the automatic transmission 12 is an automatic transmission capable of shifting six forward speeds and one reverse speed.
  • the number of shift stages and the internal structure of the automatic transmission are particularly described above. It is not limited to. That is, the present invention can be applied as long as neutral control can be performed and a predetermined engagement device is engaged when neutral control is canceled.
  • the automatic transmission 12 described above is provided with the one-way clutch F1 for establishing the first gear by merely engaging the clutch C1, but such a one-way clutch F1 is provided. The present invention can be applied even to such an automatic transmission.
  • the present invention can also be applied to a continuously variable transmission such as a belt type continuously variable transmission as an automatic transmission.
  • a continuously variable transmission such as a belt type continuously variable transmission as an automatic transmission.
  • an engagement device capable of connecting / disconnecting a power transmission path between the engine and the belt type continuously variable transmission or a well-known forward / reverse switching device may be used.
  • the present invention is applied to the provided engagement device or the like.
  • the gear ratio at the time of starting is the maximum gear ratio (minimum speed side gear ratio) ⁇ max or the gear ratio used at the start of the vehicle corresponding to the maximum gear ratio ⁇ max. It becomes.
  • various vehicle speed related values are used for the transition determination of each phase in the running N control.
  • these are only examples until the tiredness, and if the vehicle speed related values correspond one-to-one, replacement is not possible. Is possible.
  • the output rotational speed N OUT vehicle speed V
  • the determination threshold is also changed accordingly.
  • the clutch C1 functioning as the starting clutch is a hydraulic friction engagement device.
  • the clutch C1 is not limited thereto, and is not limited to a magnetic clutch such as a powder (magnetic) clutch, an electromagnetic clutch, and a meshing dog clutch. You may be comprised from a powder type, an electromagnetic type, and a mechanical engagement apparatus.
  • the hydraulic control circuit 110 is configured by a switching device, an electromagnetic switching device, or the like that switches an electrical command signal circuit to the electromagnetic clutch, not a valve device that switches an oil passage.
  • the clutch C1 functioning as the starting clutch is a clutch disposed in series with the power transmission path.
  • the clutch C1 is not limited thereto, and for example, a planetary gear device disposed in the power transmission path.
  • the present invention can also be applied to a brake that prevents the rotation of one rotating element that constitutes the differential gear device in a power transmission device in which power is transmitted through the differential gear device.
  • the starting clutch is an engaging device that is engaged when the vehicle starts, and this starting clutch includes not only the clutch but also the brake.
  • the transmission torque capacity of the starting clutch (clutch C1) is increased as the hydraulic pressure command value increases.
  • the present invention is not limited thereto.
  • the transmission torque capacity of the starting clutch via the actuator for example, the transmission torque capacity of the starting clutch (clutch C1) may be controlled to increase as the action of the actuator increases. Even if the transmission torque capacity is controlled to be smaller as the action by the actuator is larger, the present invention can be applied.
  • the torque converter 32 provided with the lock-up clutch 33 is used as the fluid transmission device.
  • a fluid coupling having no torque amplification function may be used.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Transmission Device (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Abstract

L'invention porte sur la commande d'une transmission automatique. Selon l'invention, la commande du point mort est exécutée pendant la conduite du véhicule alors que la réduction de la manœuvrabilité est supprimée. Pendant la conduite en décélération, lorsque l'accélérateur n'est pas enfoncé, une pression d'embrayage C1 est progressivement réduite dans un état où une transmission automatique (12) est laissée dans un étage d'engrenage actuel (GSN) (commande phase 2) et, si une vitesse de rotation d'entrée de rapport de démarrage (NINS) pendant la conduite en accélération devient égale ou inférieure à une vitesse de rotation prédéterminée (NEIDL+β), la pression d'embrayage C1 est réduite de telle sorte qu'un embrayage C1 est complètement desserré dans un état où la transmission automatique (12) est mise dans un premier étage d'engrenage (24) (commande phase 4). Par exemple, si une certaine vitesse (V) est atteinte, le couple de sortie (TOUT) est progressivement réduit en accord avec la réduction progressive de la pression d'embrayage C1 de manière à supprimer la sensation désagréable provoquée par la variation de la vitesse de décélération. En supplément, par exemple si une certaine vitesse (V) est atteinte, l'embrayage (C1) est dans un état de patinage et, lorsque l'accélérateur est enfoncé et que la commande de point mort pendant la conduite est supprimée par ce moyen, la sensation de lenteur à la réaccélération peut être supprimée en même temps que le choc d'engagement d'un rapport est aussi supprimé.
PCT/JP2010/060496 2010-06-21 2010-06-21 Dispositif de commande de transmission automatique pour véhicule WO2011161757A1 (fr)

Priority Applications (3)

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JP2012521194A JP5338982B2 (ja) 2010-06-21 2010-06-21 車両用自動変速機の制御装置
CN201080067600.XA CN102947623B (zh) 2010-06-21 2010-06-21 车辆用自动变速器的控制装置
PCT/JP2010/060496 WO2011161757A1 (fr) 2010-06-21 2010-06-21 Dispositif de commande de transmission automatique pour véhicule

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CN103410959A (zh) * 2013-08-26 2013-11-27 安徽江淮汽车股份有限公司 双离合器自动变速箱从空挡滑行到在挡行驶的控制方法
JP2014092190A (ja) * 2012-11-01 2014-05-19 Toyota Motor Corp 車両の走行制御装置
EP2811194A1 (fr) * 2012-02-03 2014-12-10 Toyota Jidosha Kabushiki Kaisha Dispositif de commande de véhicule
EP2840276A3 (fr) * 2013-07-29 2016-07-06 Aisin Seiki Kabushiki Kaisha Appareil d'apprentissage d'embrayage
JP2016130548A (ja) * 2015-01-13 2016-07-21 トヨタ自動車株式会社 動力伝達機構の制御装置
JPWO2014024270A1 (ja) * 2012-08-08 2016-07-21 トヨタ自動車株式会社 車両の走行制御装置
CN106907482A (zh) * 2012-09-13 2017-06-30 福特全球技术公司 控制变速器的方法
CN115095652A (zh) * 2022-05-16 2022-09-23 中国第一汽车股份有限公司 一种优化dct车型低变速器油温起步舒适性的ems控制方法

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CN109563924B (zh) * 2016-08-03 2020-11-06 加特可株式会社 自动变速器的换挡控制装置
JP6863252B2 (ja) * 2017-12-05 2021-04-21 トヨタ自動車株式会社 車両の変速制御装置
JP2019120293A (ja) 2017-12-28 2019-07-22 本田技研工業株式会社 クラッチ制御装置
JP6608974B2 (ja) * 2018-01-15 2019-11-20 本田技研工業株式会社 車両及び制御装置
TWI762976B (zh) * 2020-07-17 2022-05-01 光陽工業股份有限公司 電動機車的自動換檔系統及其方法

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EP2811194A1 (fr) * 2012-02-03 2014-12-10 Toyota Jidosha Kabushiki Kaisha Dispositif de commande de véhicule
EP2811194A4 (fr) * 2012-02-03 2016-08-31 Toyota Motor Co Ltd Dispositif de commande de véhicule
JPWO2014024270A1 (ja) * 2012-08-08 2016-07-21 トヨタ自動車株式会社 車両の走行制御装置
CN106907482A (zh) * 2012-09-13 2017-06-30 福特全球技术公司 控制变速器的方法
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JP2014092190A (ja) * 2012-11-01 2014-05-19 Toyota Motor Corp 車両の走行制御装置
EP2840276A3 (fr) * 2013-07-29 2016-07-06 Aisin Seiki Kabushiki Kaisha Appareil d'apprentissage d'embrayage
CN103410959A (zh) * 2013-08-26 2013-11-27 安徽江淮汽车股份有限公司 双离合器自动变速箱从空挡滑行到在挡行驶的控制方法
CN103410959B (zh) * 2013-08-26 2015-08-12 安徽江淮汽车股份有限公司 双离合器自动变速箱从空挡滑行到在挡行驶的控制方法
JP2016130548A (ja) * 2015-01-13 2016-07-21 トヨタ自動車株式会社 動力伝達機構の制御装置
CN115095652A (zh) * 2022-05-16 2022-09-23 中国第一汽车股份有限公司 一种优化dct车型低变速器油温起步舒适性的ems控制方法
CN115095652B (zh) * 2022-05-16 2023-09-22 中国第一汽车股份有限公司 一种优化dct车型低变速器油温起步舒适性的ems控制方法

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CN102947623A (zh) 2013-02-27

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