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WO2018059926A1 - Power train having an optimised double epicyclic gear train for a hybrid vehicle - Google Patents

Power train having an optimised double epicyclic gear train for a hybrid vehicle Download PDF

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Publication number
WO2018059926A1
WO2018059926A1 PCT/EP2017/072804 EP2017072804W WO2018059926A1 WO 2018059926 A1 WO2018059926 A1 WO 2018059926A1 EP 2017072804 W EP2017072804 W EP 2017072804W WO 2018059926 A1 WO2018059926 A1 WO 2018059926A1
Authority
WO
WIPO (PCT)
Prior art keywords
train
electric machine
gear
shaft
vehicle
Prior art date
Application number
PCT/EP2017/072804
Other languages
French (fr)
Inventor
Stephane Venturi
Original Assignee
IFP Energies Nouvelles
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 IFP Energies Nouvelles filed Critical IFP Energies Nouvelles
Publication of WO2018059926A1 publication Critical patent/WO2018059926A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/383—One-way clutches or freewheel devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/387—Actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F16H3/724—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously using external powered electric machines
    • F16H3/725—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously using external powered electric machines with means to change ratio in the mechanical gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K2006/4816—Electric machine connected or connectable to gearbox internal shaft
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of orbital gears
    • 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2069—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes using two freewheel mechanism
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the present invention relates to a powertrain for driving a motor vehicle.
  • this type of vehicle comprises a powertrain which uses alone or in combination, as a traction / propulsion drive mode, a combustion engine, generally with internal combustion, with a speed variation device and a machine motor / receiver, such as a rotating electrical machine connected to an electrical source, such as one or more electric accumulators or batteries.
  • This combination makes it possible to optimize the performance of this vehicle, both in terms of reducing emissions of pollutants into the atmosphere and at the level of the reduction in fuel consumption.
  • the use of the electric machine is preferred for drive this vehicle on the move.
  • the engine is used to move this vehicle for uses where high driving power and a long operating autonomy are required.
  • the powertrain of a motor vehicle comprises a heat engine with a shaft connected to a speed variation transmission device comprising an epicyclic motor train with a sun gear and a ring each connected to the shaft of the heat engine by a controlled-control coupling and a fixed part of the group by a coupling unidirectional and satellite carrier transmitting the speed variation to the drive axle of the vehicle via a transmission path comprising the elements between the planet carrier shaft and the axle and which ensure the kinematic connection between this shaft and this axle.
  • the powertrain of a motor vehicle comprises a heat engine with a shaft connected to a variable speed transmission device comprising an epicyclic motor train with a sun gear and a ring each connected to the shaft of the heat engine by a controlled-control coupling and a fixed part of the vehicle by a unidirectional automatic coupling, and a driving axle.
  • the controlled-control couplings comprise synchronizers controlled by control means.
  • the control means may comprise a single command connecting in translation the two synchronizers.
  • variable speed transmission device of this powertrain including changing the conventional arrangement of the second epicyclic train downstream of the electric motor.
  • the present invention relates to a powertrain of a hybrid type of motor vehicle comprising an electric machine, a heat engine, a speed variation device of the engine comprising a first epicyclic motor train with a sun gear and a ring each connected to the engine.
  • said group further comprises a speed variation device of the electric machine comprising a second epicyclic gear train with a sun gear and a ring each connected to a drive axle by a controlled-control coupling, characterized in that said ring is rotatably connected with the electric machine so as to be driven directly in rotation by said electric machine, and in that the sun gear of said second gear is coupled to said first epicyclic gear.
  • the controlled-controlled coupling of the second epicyclic gear can be a synchronized clutch.
  • the speed ratio R may be less than 2, with
  • FIG. 1 which is a diagram showing a powertrain according to the prior art, applied to a hybrid vehicle
  • FIG. 2 which is a diagram showing a variant of a powertrain according to the prior art, also applied to a hybrid vehicle,
  • the powertrain comprises a heat engine 10, in particular an internal combustion engine, with a motor shaft 12, here coming from the crankshaft of this engine, a variable speed transmission device 14 and a driving axle 1 6 which makes it possible to drive the drive wheels 18 of the vehicle, advantageously via a differential bridge 20.
  • the motor shaft 12 also has a receiving shaft function but for reasons of simplification of description, this shaft will be called motor shaft so as to distinguish it from other shafts of the transmission device.
  • a driving / receiving machine 22 is associated with this group.
  • This driving / receiving machine is an electric machine that is used as an electric motor for driving the wheels of the vehicle or as a receiving machine to generate a power source used in particular to recharge the batteries.
  • the speed variation transmission device 14 comprises an epicyclic gear train 24, referred to as an epicyclic motor gear train in the following description, with two controlled-control couplings 68, 70 and two unidirectional automatic bearings, here freewheels 30, 32.
  • the epicyclic motor train 24 comprises a sun gear 34 with a strip 36 toothed externally and carried by a flange mounted on a hollow shaft 40, said sun gear shaft, surrounding the motor shaft 12 being free to rotate but fixed in translation relative to this motor shaft.
  • This shaft is supported in a bearing carried by a fixed portion 46 (frame or casing) of the power unit through the freewheel 30, called planetary freewheel.
  • This train also comprises an internally toothed ring gear 48, placed concentrically with the sun gear, and a sail 52 connected to a hollow shaft 54, said crown shaft, surrounding the drive shaft 12 being free to rotate but fixed in translation relative to this motor shaft.
  • This ring is connected via its shaft 54 to the fixed part (frame or casing) of the power unit by the freewheel 32, called crown freewheel, placed at a distance from its free end.
  • the two freewheels 30 and 32 are placed in such a way that the ring gear 48 and the sun gear 34 can rotate only in the same direction and preferably in the same direction as the drive shaft 12.
  • the epicyclic motor train comprises a planet carrier 58 with advantageously three satellites 60, in the form of an externally toothed wheel, placed in the same angular interval relative to each other (here at 120 °) and meshing with the crown and the sun gear.
  • the ring, the strip 36 of the sun gear and the satellites 60 are located in the same plane, here in a vertical plane by considering FIG.
  • These satellites are each carried by a horizontal axis being free in rotation but fixed in translation thereon. These satellite axes are carried by a vertical wall 64 connected to a tubular bearing 66, said bearing planet carrier, which surrounds the sun shaft 40 being free to rotate thereon.
  • the free ends of the hollow shafts of the sun gear and the ring gear are each connected to the drive shaft respectively by a coupling 68 and 70.
  • the end of the hollow shaft 54 of the ring carries a conical friction surface and a toothed cylindrical surface.
  • the clutch 70 comprises an externally and internally toothed engagement hub, which carries a walkman with an internal toothing and a tapered, preferably frictional, bevel ring.
  • the player is driven in axial movement towards the end considered by any known means, such as by a control member in the form of a fork actuated by a lever 98 which acts on the player.
  • This displacement has the effect of bringing the conical friction ring in cooperation with the conical friction surface carried by the end of the hollow shaft, which then makes it possible to synchronize the speed of the hollow shaft relative to that of the hub.
  • a clutch 68 is arranged motor side on the drive shaft 12. Its control is for example in the form of a lever 96 whose action allows the attachment of the drive shaft 12 with the hollow shaft of the sun gear 40 to obtain the Another gear ratio of the first epicyclic gear.
  • the transmission device comprises another additional epicyclic gear train 100, hereinafter referred to as the epicyclic gear train of an electric machine, placed on a shaft 102 substantially parallel to the drive shaft 12 and supported by bearings integrated in the fixed part of the powertrain.
  • the epicyclic gear train of an electric machine placed on a shaft 102 substantially parallel to the drive shaft 12 and supported by bearings integrated in the fixed part of the powertrain.
  • two toothed connecting strips 106, 108 are made to cooperate.
  • One of the connecting strips 106 is carried by the planet carrier 58 of the motor epicyclic gear train 24 and cooperates meshing with the other 108 of the bands which is carried by the ring 1 10 of the planetary gear train of machine 100.
  • This ring also comprises an internally toothed drive strip carried by a flange fixed on a tubular bearing 1 1 6 surrounding the shaft 102.
  • This driving strip cooperates with a planet carrier 11 January 1 advantageously comprising three satellites 1 18, in the form of an externally-toothed wheel, carried by satellite axes and placed in the same angular interval with respect to the other (here at 120 °) and meshing with the toothing of the drive band of the crown 1 10.
  • the satellite shafts are carried by a sail fixed on a tubular bearing 120 surrounding the shaft 102.
  • sun gear 122 connected in rotation with the shaft 102, which comprises an externally toothed strip and carried by a flange.
  • the ring of the ring 1 10 the toothed strip of the sun gear and the satellites are located in the same plane, here in a vertical plane considering FIG.
  • the flange of the planet carrier also comprises an externally toothed strip 124 which cooperates with another toothed wheel 126 connected to the driving axle 16 thus forming a motion transmission path between the machine epicyclic gear train 100 and the axle 16. .
  • the shaft 102 fixedly bears another gear 142 which cooperates with the rotor 144 of the electric machine 22, here via a toothed belt or a chain.
  • the machine epicyclic gear train 100 also carries a controlled-control coupling 146 making it possible to connect its ring gear 1 10 to either the stationary gear 142 or to the fixed part 46 of the powertrain.
  • this coupling comprises a synchronizer 148, said machine synchronizer, with two coupling positions and a neutral position.
  • This synchronizer is rotatably supported by the tubular bearing of the ring 1 10 and is designed to cooperate, under the effect of a control means 150, either to the stationary gear 142 or to the fixed part 46 of the group Transmissions.
  • This rotation of the planet carrier is then transmitted through the connecting strips 106, 108 to the ring 1 10 of the epicyclic machine train which transmits the rotational movement to its planet carrier and to the axle through the track. movement transmission between this train and the axle 1 6.
  • FIG. 2 describes a variant of the hybrid powertrain according to FIG. 1 relating only to another embodiment of the two couplings 68 and 70 (FIG. 1) connected to the first epicyclic gear train 24.
  • the couplings of the first epicyclic gear train comprise two friction clutches 200 and 201 respectively associated with the planetaries and the crown of the first train. This compact construction allows the installation of clutches on the engine side and a grouping of the two control levers.
  • the kinematics of the drive by the electric motor 22 is identical to the description of FIG. FIG. 3 describes the variant according to the invention concerning a new kinematic arrangement of the second epicyclic gear train associated with the electric machine 22.
  • the ring 1 10a of the second epicyclic gear 100a is directly rotated by the rotor of the electric machine 22, by a set of gears or a toothed belt or chains.
  • the rotation of the rotor shaft of the electric machine 22 causes the rotation of the ring 1 10a of the second epicyclic gear.
  • the sun gear 122a which is carried by a tubular sun gear shaft 123a, is here coupled to the planet carrier of the first epicyclic gear train 24 via the gear linkage strip 108a. Consequently, the planet carrier 11a of the second train is rotatably connected to the driving axle 116.
  • a coupling 146a makes it possible to select one of the two gear ratios obtained by the second epicyclic gear train. Preferably, this coupling is a synchronized clutch. In position 1, the sun gear shaft is connected to the frame 46, the driving axle is then driven via the satellite carrier, itself driven by the crown 1 10a and the satellites. In position 2, the clutch links the sun gear to the planet carrier, obtaining the second gear ratio of the second epicyclic gear train
  • the short ratio is obtained when the actuator A3 is in position 1, and the long ratio is obtained when A3 is in position 2.
  • R can only be greater than 2, whereas according to the invention the ratio R can be less than 2.
  • this architecture is particularly advantageous when a greater range of vehicle speed is required on the short gear. It is thus possible to avoid electrical shifts in this more spreading vehicle speed range. This possibility is all the more advantageous as the electric machine is more powerful.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Structure Of Transmissions (AREA)
  • Arrangement Of Transmissions (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The present invention concerns a power train for a hybrid motor vehicle, comprising an electric machine (22), a heat engine, a speed variation device (14) including a first epicyclic drive train with a sun gear (34) and a ring gear (48), each of which is connected to the shaft (12) of the heat engine (10) via a controlled coupling (68, 70) and to a fixed portion of the vehicle via a one-way coupling (30, 32), and a movement transmission track (106, 108a) for transmitting movement to a driven axle (16), said power train comprising a second epicyclic drive train with a sun gear (102a) and a ring gear (110a), each of which is connected to the driven axle (16) via a controlled coupling (146a). According to the invention, the ring gear (110a) is linked in rotation with the electric machine (22) in such a way as to be rotated directly by the electric machine, and the sun gear of the second epicyclic drive train is coupled to the first epicyclic drive train.

Description

GROUPE MOTOPROPULSEUR A DOUBLE TRAIN EPICYCLOÏDAL OPTIMISE POUR UN VEHICULE DE TYPE HYBRIDE  EPICYCLOIDAL DOUBLE TRAIN POWERTRAIN OPTIMIZED FOR A HYBRID VEHICLE
La présente invention se rapporte à un groupe motopropulseur pour l'entraînement d'un véhicule automobile. The present invention relates to a powertrain for driving a motor vehicle.
Elle concerne plus particulièrement un groupe motopropulseur pour un véhicule de type hybride. Comme cela est déjà connu, ce type de véhicule comporte un groupe motopropulseur qui utilise seul ou en combinaison, comme mode d'entraînement en traction/propulsion, un moteur thermique, généralement à combustion interne, avec un dispositif de variation de vitesse et une machine motrice/réceptrice, comme une machine électrique rotative reliée à une source électrique, telle qu'un ou plusieurs accumulateurs électriques ou batteries. It relates more particularly to a powertrain for a hybrid type vehicle. As is already known, this type of vehicle comprises a powertrain which uses alone or in combination, as a traction / propulsion drive mode, a combustion engine, generally with internal combustion, with a speed variation device and a machine motor / receiver, such as a rotating electrical machine connected to an electrical source, such as one or more electric accumulators or batteries.
Cette combinaison permet d'optimiser les performances de ce véhicule, tant au niveau de la réduction des émissions de polluants dans l'atmosphère qu'au niveau de la diminution de la consommation en carburant. Ainsi, lorsque l'on souhaite déplacer le véhicule avec un couple important sur une grande plage de vitesses tout en limitant la génération de gaz d'échappement et de bruit, comme dans un site urbain, l'utilisation de la machine électrique est privilégiée pour entraîner en déplacement ce véhicule.  This combination makes it possible to optimize the performance of this vehicle, both in terms of reducing emissions of pollutants into the atmosphere and at the level of the reduction in fuel consumption. Thus, when it is desired to move the vehicle with a large torque over a wide range of speeds while limiting the generation of exhaust gas and noise, as in an urban site, the use of the electric machine is preferred for drive this vehicle on the move.
Par contre, le moteur thermique est utilisé pour déplacer ce véhicule lors d'utilisations où une puissance d'entraînement élevée et une grande autonomie de fonctionnement sont demandées.  On the other hand, the engine is used to move this vehicle for uses where high driving power and a long operating autonomy are required.
Comme cela est déjà connu par la demande de brevet français N° 2 955 165 du demandeur, le groupe motopropulseur de véhicule automobile comprend un moteur thermique avec un arbre relié à un dispositif de transmission à variation de vitesse comportant un train épicycloïdal de moteur avec un planétaire et une couronne reliés chacun à l'arbre du moteur thermique par un accouplement à commande contrôlée et à une partie fixe du groupe par un accouplement unidirectionnel et un porte-satellites transmettant la variation de vitesse à l'essieu moteur du véhicule par l'intermédiaire d'une voie de transmission comportant les éléments compris entre l'arbre du porte-satellites et l'essieu et qui permettent d'assurer la liaison cinématique entre cet arbre et cet essieu. As already known from the French patent application No. 2 955 165 of the applicant, the powertrain of a motor vehicle comprises a heat engine with a shaft connected to a speed variation transmission device comprising an epicyclic motor train with a sun gear and a ring each connected to the shaft of the heat engine by a controlled-control coupling and a fixed part of the group by a coupling unidirectional and satellite carrier transmitting the speed variation to the drive axle of the vehicle via a transmission path comprising the elements between the planet carrier shaft and the axle and which ensure the kinematic connection between this shaft and this axle.
De façon à augmenter la capacité de variation de vitesse lors de l'entraînement du véhicule par la machine électrique, le demandeur a associé, au dispositif de variation de vitesse du document précité, un autre train épicycloïdal reliant le train épicycloïdal de moteur à une voie de transmission de mouvement à l'essieu moteur de ce véhicule, comme cela est décrit dans la demande de brevet français N° 2 962 697 du demandeur.  In order to increase the speed variation capacity during driving of the vehicle by the electric machine, the applicant associated, with the speed variation device of the aforementioned document, another epicyclic gear train connecting the epicyclic engine train to a track. transmission of motion to the drive axle of this vehicle, as described in the French patent application No. 2 962 697 of the applicant.
Comme cela est déjà connu par la demande de brevet français N° 3013273 du demandeur, le groupe motopropulseur de véhicule automobile comprend un moteur thermique avec un arbre relié à un dispositif de transmission à variation de vitesse comportant un train épicycloïdal de moteur avec un planétaire et une couronne reliés chacun à l'arbre du moteur thermique par un accouplement à commande contrôlée et à une partie fixe du véhicule par un accouplement automatique unidirectionnel, et un essieu moteur. As already known from the French patent application No. 3013273 of the applicant, the powertrain of a motor vehicle comprises a heat engine with a shaft connected to a variable speed transmission device comprising an epicyclic motor train with a sun gear and a ring each connected to the shaft of the heat engine by a controlled-control coupling and a fixed part of the vehicle by a unidirectional automatic coupling, and a driving axle.
Dans ce perfectionnement, les accouplements à commande contrôlée comprennent des synchroniseurs contrôlés par des moyens de commande. En particulier, les moyens de commande peuvent comprendre une commande unique reliant en translation les deux synchroniseurs.  In this improvement, the controlled-control couplings comprise synchronizers controlled by control means. In particular, the control means may comprise a single command connecting in translation the two synchronizers.
Dans un souci constant d'amélioration, le demandeur a encore perfectionné le dispositif de transmission à vitesse variable de ce groupe motopropulseur, notamment en modifiant la disposition conventionnelle du deuxième train épicycloïdal en aval du moteur électrique. In a constant effort to improve, the applicant has further improved the variable speed transmission device of this powertrain, including changing the conventional arrangement of the second epicyclic train downstream of the electric motor.
Ainsi, la présente invention concerne un groupe motopropulseur de véhicule automobile de type hybride comportant une machine électrique, un moteur thermique, un dispositif de variation de vitesse du moteur thermique comprenant un premier train épicycloïdal de moteur avec un planétaire et une couronne reliés chacun à l'arbre) du moteur thermique par un accouplement à commande contrôlée et à une partie fixe du véhicule par un accouplement unidirectionnel, et une voie de transmission de mouvement à un essieu moteur, ledit groupe comporte en outre un dispositif de variation de vitesse de la machine électrique comprenant un deuxième train épicycloïdal avec un planétaire et une couronne reliés chacun à un essieu moteur par un accouplement à commande contrôlée, caractérisé en ce que ladite couronne est liée en rotation avec la machine électrique de façon à être entraînée directement en rotation par ladite machine électrique, et en ce que le planétaire dudit deuxième train est couplé audit premier train épicycloïdal. L'accouplement à commande contrôlée du deuxième train épicycloïdal peut être un embrayage synchronisé. Thus, the present invention relates to a powertrain of a hybrid type of motor vehicle comprising an electric machine, a heat engine, a speed variation device of the engine comprising a first epicyclic motor train with a sun gear and a ring each connected to the engine. shaft) by a controlled-drive coupling and a fixed part of the vehicle by a unidirectional coupling, and a motion transmission path to a driving axle, said group further comprises a speed variation device of the electric machine comprising a second epicyclic gear train with a sun gear and a ring each connected to a drive axle by a controlled-control coupling, characterized in that said ring is rotatably connected with the electric machine so as to be driven directly in rotation by said electric machine, and in that the sun gear of said second gear is coupled to said first epicyclic gear. The controlled-controlled coupling of the second epicyclic gear can be a synchronized clutch.
Le rapport de vitesse R peut être inférieur à 2, avec The speed ratio R may be less than 2, with
^ _ Vmax véhicule sur le rapport LONG au régime max de la machine électrique (N) Vmax véhicule sur le rapport COURT au régime max de la machine électrique (N) ^ _ Vmax vehicle on the LONG ratio at the maximum speed of the electric machine (N) Vmax vehicle on the ratio COURT at the maximum speed of the electric machine (N)
Les autres caractéristiques et avantages de l'invention vont apparaître à la lecture de la description qui suit, donnée à titre uniquement illustratif et non limitatif, et à laquelle sont annexées : The other features and advantages of the invention will appear on reading the description which follows, given solely by way of illustration and not limitation, and to which are appended:
- La figure 1 qui est un schéma montrant un groupe motopropulseur selon l'art antérieur, appliqué à un véhicule hybride,  FIG. 1 which is a diagram showing a powertrain according to the prior art, applied to a hybrid vehicle,
- La figure 2 qui est un schéma montrant une variante d'un groupe motopropulseur selon l'art antérieur, appliqué également à un véhicule hybride, FIG. 2 which is a diagram showing a variant of a powertrain according to the prior art, also applied to a hybrid vehicle,
- La figure 3 qui illustre schématiquement un groupe motopropulseur selon la présente invention. - Figure 3 which schematically illustrates a powertrain according to the present invention.
Sur la figure 1 , selon l'art antérieur notamment décrit dans le document FR- 3013273, le groupe motopropulseur comprend un moteur thermique 10, notamment un moteur à combustion interne, avec un arbre de moteur 12, ici issu du vilebrequin de ce moteur, un dispositif de transmission à variation de vitesse 14 et un essieu moteur 1 6 qui permet d'entraîner les roues motrices 18 du véhicule, avantageusement par l'intermédiaire d'un pont différentiel 20. L'arbre de moteur 12 a également une fonction d'arbre récepteur mais pour des raisons de simplification de la description, cet arbre sera dénommé arbre moteur de manière à pouvoir le distinguer des autres arbres du dispositif de transmission. In FIG. 1, according to the prior art, in particular described in document FR-3013273, the powertrain comprises a heat engine 10, in particular an internal combustion engine, with a motor shaft 12, here coming from the crankshaft of this engine, a variable speed transmission device 14 and a driving axle 1 6 which makes it possible to drive the drive wheels 18 of the vehicle, advantageously via a differential bridge 20. The motor shaft 12 also has a receiving shaft function but for reasons of simplification of description, this shaft will be called motor shaft so as to distinguish it from other shafts of the transmission device.
Dans le cadre de l'utilisation de ce groupe motopropulseur pour un véhicule hybride, une machine motrice/réceptrice 22 est associée à ce groupe. In the context of the use of this powertrain for a hybrid vehicle, a driving / receiving machine 22 is associated with this group.
Cette machine motrice/réceptrice est une machine électrique qui est utilisée en tant que moteur électrique pour entraîner les roues du véhicule ou en tant que machine réceptrice pour générer une source de courant servant notamment à recharger les batteries.  This driving / receiving machine is an electric machine that is used as an electric motor for driving the wheels of the vehicle or as a receiving machine to generate a power source used in particular to recharge the batteries.
Bien entendu, tout autre type de machine motrice/réceptrice peut être utilisée, comme une machine hydraulique ou pneumatique. Le dispositif de transmission à variation de vitesse 14 comprend un train épicycloïdal 24, dénommé train épicycloïdal de moteur dans la suite de la description, avec deux accouplements à commande contrôlée 68, 70 et deux paliers automatiques unidirectionnels, ici des roues libres 30, 32.  Of course, any other type of driving / receiving machine can be used, such as a hydraulic or pneumatic machine. The speed variation transmission device 14 comprises an epicyclic gear train 24, referred to as an epicyclic motor gear train in the following description, with two controlled-control couplings 68, 70 and two unidirectional automatic bearings, here freewheels 30, 32.
Le train épicycloïdal de moteur 24 comprend un planétaire 34 avec un bandeau 36 denté extérieurement et porté par un flasque monté fixement sur un arbre creux 40, dit arbre de planétaire, venant entourer l'arbre moteur 12 en étant libre en rotation mais fixe en translation par rapport à cet arbre moteur. Cet arbre prend appui dans un palier porté par une partie fixe 46 (bâti ou carter) du groupe motopropulseur par l'intermédiaire de la roue libre 30, baptisée roue libre planétaire.  The epicyclic motor train 24 comprises a sun gear 34 with a strip 36 toothed externally and carried by a flange mounted on a hollow shaft 40, said sun gear shaft, surrounding the motor shaft 12 being free to rotate but fixed in translation relative to this motor shaft. This shaft is supported in a bearing carried by a fixed portion 46 (frame or casing) of the power unit through the freewheel 30, called planetary freewheel.
Ce train comprend également une couronne 48 dentée intérieurement, placée concentriquement au planétaire, et un voile 52 relié à un arbre creux 54, dit arbre de couronne, venant entourer l'arbre moteur 12 en étant libre en rotation mais fixe en translation par rapport à cet arbre moteur. Cette couronne est reliée par l'intermédiaire de son arbre 54 à la partie fixe (bâti ou carter) du groupe motopropulseur par la roue libre 32, baptisée roue libre de couronne, placée à distance de son extrémité libre. Bien entendu, les deux roues libres 30 et 32 sont placées de manière telle que la couronne 48 et le planétaire 34 ne puissent tourner que dans le même sens et préférentiellement dans le même sens que l'arbre moteur 12. This train also comprises an internally toothed ring gear 48, placed concentrically with the sun gear, and a sail 52 connected to a hollow shaft 54, said crown shaft, surrounding the drive shaft 12 being free to rotate but fixed in translation relative to this motor shaft. This ring is connected via its shaft 54 to the fixed part (frame or casing) of the power unit by the freewheel 32, called crown freewheel, placed at a distance from its free end. Of course, the two freewheels 30 and 32 are placed in such a way that the ring gear 48 and the sun gear 34 can rotate only in the same direction and preferably in the same direction as the drive shaft 12.
Le train épicycloïdal de moteur comprend un porte-satellites 58 avec avantageusement trois satellites 60, en forme de roue à denture extérieure, placés dans un même intervalle angulaire l'un par rapport à l'autre (ici à 120°) et engrenant avec la couronne et le planétaire.  The epicyclic motor train comprises a planet carrier 58 with advantageously three satellites 60, in the form of an externally toothed wheel, placed in the same angular interval relative to each other (here at 120 °) and meshing with the crown and the sun gear.
Pour cela, la couronne, le bandeau 36 du planétaire et les satellites 60 sont situés dans un même plan, ici dans un plan vertical en considérant la figure 1 .  For this, the ring, the strip 36 of the sun gear and the satellites 60 are located in the same plane, here in a vertical plane by considering FIG.
Ces satellites sont portés chacun par un axe horizontal en étant libres en rotation mais fixes en translation sur celui-ci. Ces axes de satellites sont portés par une paroi verticale 64 reliée à un palier tubulaire 66, dit palier de porte- satellites, qui vient entourer l'arbre de planétaire 40 en étant libre en rotation sur celui-ci.  These satellites are each carried by a horizontal axis being free in rotation but fixed in translation thereon. These satellite axes are carried by a vertical wall 64 connected to a tubular bearing 66, said bearing planet carrier, which surrounds the sun shaft 40 being free to rotate thereon.
Les extrémités libres des arbres creux du planétaire et de la couronne sont reliées chacune à l'arbre moteur respectivement par un accouplement 68 et 70.  The free ends of the hollow shafts of the sun gear and the ring gear are each connected to the drive shaft respectively by a coupling 68 and 70.
Pour cela l'extrémité de l'arbre creux 54 de la couronne porte une surface conique de friction et une portée cylindrique dentée.  For this, the end of the hollow shaft 54 of the ring carries a conical friction surface and a toothed cylindrical surface.
Comme cela est bien connu, l'embrayage 70 comprend un moyeu de solidarisation denté extérieurement et intérieurement, qui porte un baladeur avec une denture intérieure et une bague conique de synchronisation, de préférence à friction.  As is well known, the clutch 70 comprises an externally and internally toothed engagement hub, which carries a walkman with an internal toothing and a tapered, preferably frictional, bevel ring.
Pour relier l'extrémité de l'arbre creux à l'arbre 12, il est nécessaire dans un premier temps de synchroniser la vitesse de l'arbre avec celle de l'extrémité.  To connect the end of the hollow shaft to the shaft 12, it is necessary in a first step to synchronize the speed of the shaft with that of the end.
Pour cela, le baladeur est entraîné en déplacement axial vers l'extrémité considérée par tous moyens connus, comme par un organe de contrôle sous la forme d'une fourchette actionnée par un levier 98 qui agit sur le baladeur. Ce déplacement a pour effet d'amener la bague conique de friction en coopération avec la surface conique de friction portée par l'extrémité de l'arbre creux, ce qui permet de synchroniser alors la vitesse de l'arbre creux par rapport à celle du moyeu.  For this, the player is driven in axial movement towards the end considered by any known means, such as by a control member in the form of a fork actuated by a lever 98 which acts on the player. This displacement has the effect of bringing the conical friction ring in cooperation with the conical friction surface carried by the end of the hollow shaft, which then makes it possible to synchronize the speed of the hollow shaft relative to that of the hub.
Dés que la vitesse de l'arbre creux atteint celle du moyeu, et par conséquent celle de l'arbre moteur, le déplacement axial du baladeur est poursuivi de manière à ce que sa denture intérieure vienne coopérer avec la portée cylindrique dentée de l'extrémité de l'arbre creux. Une fois cette coopération réalisée, ceci permet d'assurer une liaison à rotation sans possibilité de glissement entre les arbres creux et l'arbre moteur. As soon as the speed of the hollow shaft reaches that of the hub, and consequently that of the motor shaft, the axial displacement of the sliding device is continued so that its internal toothing comes to cooperate with the toothed cylindrical bearing surface. from the end of the hollow shaft. Once this cooperation is achieved, this ensures a rotational connection without the possibility of sliding between the hollow shafts and the motor shaft.
Un embrayage 68 est disposé coté moteur sur l'arbre moteur 12. Sa commande est par exemple sous forme d'un levier 96 dont l'action permet la solidarisation de l'arbre moteur 12 avec l'arbre creux du planétaire 40 pour obtenir l'autre rapport de vitesse du premier train épicycloïdal.  A clutch 68 is arranged motor side on the drive shaft 12. Its control is for example in the form of a lever 96 whose action allows the attachment of the drive shaft 12 with the hollow shaft of the sun gear 40 to obtain the Another gear ratio of the first epicyclic gear.
Comme mieux visible sur la figure 1 , le dispositif de transmission comprend un autre train épicycloïdal additionnel 100, dénommé dans la suite de la description train épicycloïdal de machine électrique, placé sur un arbre 102 sensiblement parallèle à l'arbre moteur 12 et supporté par des paliers intégrés à la partie fixe du groupe moto propulseur. As best seen in FIG. 1, the transmission device comprises another additional epicyclic gear train 100, hereinafter referred to as the epicyclic gear train of an electric machine, placed on a shaft 102 substantially parallel to the drive shaft 12 and supported by bearings integrated in the fixed part of the powertrain.
Pour assurer la liaison à rotation entre les deux trains, deux bandeaux de liaison dentés 106, 108 sont amenés à coopérer.  To ensure the rotational connection between the two trains, two toothed connecting strips 106, 108 are made to cooperate.
L'un des bandeaux de liaison 106 est porté par le porte-satellites 58 du train épicycloïdal de moteur 24 et coopère à engrènement avec l'autre 108 des bandeaux qui est porté par la couronne 1 10 du train épicycloïdal de machine 100.  One of the connecting strips 106 is carried by the planet carrier 58 of the motor epicyclic gear train 24 and cooperates meshing with the other 108 of the bands which is carried by the ring 1 10 of the planetary gear train of machine 100.
Cette couronne comprend également un bandeau d'entraînement denté intérieurement porté par un flasque fixé sur un palier tubulaire 1 1 6 entourant l'arbre 102.  This ring also comprises an internally toothed drive strip carried by a flange fixed on a tubular bearing 1 1 6 surrounding the shaft 102.
Ce bandeau d'entraînement coopère avec un porte-satellites 1 1 1 comprenant avantageusement trois satellites 1 18, en forme de roue à denture extérieure, portés par des axes de satellites et placés dans un même intervalle angulaire l'un par rapport à l'autre (ici à 120°) et engrenant avec la denture du bandeau d'entraînement de la couronne 1 10. Les axes de satellites sont portés par un voile fixé sur un palier tubulaire 120 entourant l'arbre 102.  This driving strip cooperates with a planet carrier 11 January 1 advantageously comprising three satellites 1 18, in the form of an externally-toothed wheel, carried by satellite axes and placed in the same angular interval with respect to the other (here at 120 °) and meshing with the toothing of the drive band of the crown 1 10. The satellite shafts are carried by a sail fixed on a tubular bearing 120 surrounding the shaft 102.
Ces satellites coopèrent également à engrènement avec un planétaire 122, lié en rotation avec l'arbre 102, qui comprend un bandeau denté extérieurement et porté par un flasque.  These satellites also cooperate in meshing with a sun gear 122, connected in rotation with the shaft 102, which comprises an externally toothed strip and carried by a flange.
Bien entendu, comme pour le train épicycloïdal de moteur thermique 24, le bandeau de la couronne 1 10, le bandeau denté du planétaire et les satellites sont situés dans un même plan, ici dans un plan vertical en considérant la figure 1 . Le flasque du porte-satellites comprend également un bandeau 124 denté extérieurement qui coopère avec une autre roue dentée 126 liée à l'essieu moteur 16 en formant ainsi une voie de transmission de mouvement entre le train épicycloïdal de machine 100 et l'essieu 1 6. Of course, as for the epicyclic engine train 24, the ring of the ring 1 10, the toothed strip of the sun gear and the satellites are located in the same plane, here in a vertical plane considering FIG. The flange of the planet carrier also comprises an externally toothed strip 124 which cooperates with another toothed wheel 126 connected to the driving axle 16 thus forming a motion transmission path between the machine epicyclic gear train 100 and the axle 16. .
L'arbre 102 porte fixement une autre roue dentée 142 qui coopère avec le rotor 144 de la machine électrique 22, ici par l'intermédiaire d'une courroie crantée ou d'une chaîne.  The shaft 102 fixedly bears another gear 142 which cooperates with the rotor 144 of the electric machine 22, here via a toothed belt or a chain.
Le train épicycloïdal de machine 100 porte également un accouplement à commande contrôlée 146 permettant de relier sa couronne 1 10, soit à la roue dentée fixe 142, soit à la partie fixe 46 du groupe motopropulseur.  The machine epicyclic gear train 100 also carries a controlled-control coupling 146 making it possible to connect its ring gear 1 10 to either the stationary gear 142 or to the fixed part 46 of the powertrain.
De manière avantageuse, cet accouplement comprend un synchroniseur 148, dit synchroniseur de machine, avec deux positions d'accouplement et une position neutre. Ce synchroniseur est porté fixement en rotation par le palier tubulaire de la couronne 1 10 et est prévu pour coopérer, sous l'effet d'un moyen de commande 150, soit à la roue dentée fixe 142, soit à la partie fixe 46 du groupe motopropulseur.  Advantageously, this coupling comprises a synchronizer 148, said machine synchronizer, with two coupling positions and a neutral position. This synchronizer is rotatably supported by the tubular bearing of the ring 1 10 and is designed to cooperate, under the effect of a control means 150, either to the stationary gear 142 or to the fixed part 46 of the group Transmissions.
Certaines configurations de l'ensemble du groupe motopropulseur vont être maintenant décrites à titre d'exemple pour des modes de traction/propulsion utilisant le moteur thermique. Certain configurations of the entire powertrain will now be described by way of example for traction / propulsion modes using the engine.
Pour la position active de l'embrayage 68 et la position inactive du synchroniseur 70 (rapport de vitesse 1 ), la rotation de l'arbre 12 du moteur thermique 10 entraîne en rotation le planétaire 34. La rotation du planétaire entraîne à son tour en rotation les satellites 60 puis le porte-satellites 58. For the active position of the clutch 68 and the inactive position of the synchronizer 70 (speed ratio 1), the rotation of the shaft 12 of the heat engine 10 rotates the sun gear 34. The rotation of the sun gear in turn causes rotation the satellites 60 and the planet carrier 58.
Cette rotation du porte-satellites est ensuite transmise au travers des bandeaux de liaison 106, 108 à la couronne 1 10 du train épicycloïdal de machine qui transmet le mouvement de rotation à son porte-satellites et à l'essieu au travers de la voie de transmission de mouvement entre ce train et l'essieu 1 6.  This rotation of the planet carrier is then transmitted through the connecting strips 106, 108 to the ring 1 10 of the epicyclic machine train which transmits the rotational movement to its planet carrier and to the axle through the track. movement transmission between this train and the axle 1 6.
A l'inverse, pour la position active du synchroniseur 70 et la position inactive de l'embrayage 68 (rapport de vitesse 2), la rotation de l'arbre 12 du moteur thermique 10 entraîne en rotation la couronne 48 qui entraîne en rotation les satellites 60 puis le porte-satellites 58. Cette rotation du porte-satellites est ensuite transmise au travers des bandeaux de liaison 106, 108 à la couronne 1 10 du train épicycloïdal de machine qui transmet le mouvement de rotation à son porte-satellites et à l'essieu au travers de la voie de transmission de mouvement entre ce train et l'essieu 1 6. Conversely, for the active position of the synchronizer 70 and the inactive position of the clutch 68 (speed ratio 2), the rotation of the shaft 12 of the heat engine 10 drives in rotation the ring 48 which drives in rotation the satellites 60 and then the planet carrier 58. This rotation of the planet carrier is then transmitted through the connecting strips 106, 108 to the ring 1 10 of the epicyclic machine train which transmits the rotational movement to its planet carrier and to the axle through the track. movement transmission between this train and the axle 1 6.
Dans la configuration où les embrayages 68 et 70 sont tous deux en position active (rapport de vitesse 3), la rotation de l'arbre 12 du moteur thermique 10 entraîne en rotation la couronne 48 ainsi que le planétaire 34 et en conséquence le porte-satellites 58. Cette rotation du porte-satellites est ensuite transmise au travers des bandeaux de liaison 106, 108 à la couronne 1 10 du train épicycloïdal de machine qui transmet le mouvement de rotation à son porte-satellites et à l'essieu au travers de la voie de transmission de mouvement entre ce train et l'essieu 16.  In the configuration where the clutches 68 and 70 are both in the active position (speed ratio 3), the rotation of the shaft 12 of the heat engine 10 rotates the ring 48 and the sun gear 34 and consequently the carrier. satellites 58. This rotation of the planet carrier is then transmitted through the connecting strips 106, 108 to the ring 1 10 of the epicyclic machine train which transmits the rotational movement to its planet carrier and to the axle through the path of motion transmission between this train and the axle 16.
De manière a encore plus simplifié le groupe motopropulseur, il est prévu d'utiliser un seul moyen de commande pour contrôler les deux embrayages 68, 70.  In order to further simplify the power train, it is intended to use a single control means for controlling the two clutches 68, 70.
On note que dans cette architecture, l'embrayage du planétaire se trouve entre le carter boite de vitesse (partie fixe 46) et le moteur et que l'embrayage synchronisé de la couronne est à l'opposé, sur l'arbre moteur 12. La figure 2 décrit une variante du groupe motopropulseur hybride selon la figure 1 portant uniquement sur un autre mode de réalisation des deux accouplements 68 et 70 (figure 1 ) liés au premier train épicycloïdal 24. Les accouplements du premier train épicycloïdal comportent deux embrayages à friction 200 et 201 associés respectivement aux planétaires et à la couronne du premier train. Cette construction compacte permet l'installation des embrayages coté moteur thermique et un regroupement des deux leviers de commande. Note that in this architecture, the clutch of the sun gear is between the gearbox housing (fixed part 46) and the motor and that the synchronized clutch of the gear is opposite, on the drive shaft 12. FIG. 2 describes a variant of the hybrid powertrain according to FIG. 1 relating only to another embodiment of the two couplings 68 and 70 (FIG. 1) connected to the first epicyclic gear train 24. The couplings of the first epicyclic gear train comprise two friction clutches 200 and 201 respectively associated with the planetaries and the crown of the first train. This compact construction allows the installation of clutches on the engine side and a grouping of the two control levers.
La cinématique de l'entraînement par le moteur électrique 22 est identique à la description de la figure 1 . La figure 3 décrit la variante selon l'invention concernant une nouvelle disposition cinématique du deuxième train épicycloïdal associé à la machine électrique 22.  The kinematics of the drive by the electric motor 22 is identical to the description of FIG. FIG. 3 describes the variant according to the invention concerning a new kinematic arrangement of the second epicyclic gear train associated with the electric machine 22.
Contrairement à l'art antérieur, la couronne 1 10a du second train épicycloïdal 100a est directement entraînée en rotation par le rotor de la machine électrique 22, par un ensemble de pignons ou par une courroie crantée ou par des chaînes. Par directement, il faut comprendre que la rotation de l'arbre du rotor de la machine électrique 22 entraîne la rotation de la couronne 1 10a du deuxième train épicycloïdal. Unlike the prior art, the ring 1 10a of the second epicyclic gear 100a is directly rotated by the rotor of the electric machine 22, by a set of gears or a toothed belt or chains. By directly, it should be understood that the rotation of the rotor shaft of the electric machine 22 causes the rotation of the ring 1 10a of the second epicyclic gear.
Le planétaire 122a, qui est porté par un arbre tubulaire de planétaire 123a, est ici couplé au porte satellites du premier train épicycloïdal 24 par l'intermédiaire du bandeau de liaison par engrenage 108a. Par conséquent, le porte satellites 1 1 1 a du deuxième train est lié en rotation avec l'essieu moteur 1 6. Un accouplement 146a permet de sélectionner l'un des deux rapports de vitesse obtenu par le deuxième train épicycloïdal. De préférence, cet accouplement est un embrayage synchronisé. En position 1 , l'arbre du planétaire est lié au bâti 46, l'essieu moteur est alors entraîné par l'intermédiaire du porte satellites, lui-même entraîné par la couronne 1 10a et les satellites. En position 2, l'embrayage lie le planétaire au porte-satellites, obtenant le deuxième rapport de vitesse du deuxième train épicycloïdal  The sun gear 122a, which is carried by a tubular sun gear shaft 123a, is here coupled to the planet carrier of the first epicyclic gear train 24 via the gear linkage strip 108a. Consequently, the planet carrier 11a of the second train is rotatably connected to the driving axle 116. A coupling 146a makes it possible to select one of the two gear ratios obtained by the second epicyclic gear train. Preferably, this coupling is a synchronized clutch. In position 1, the sun gear shaft is connected to the frame 46, the driving axle is then driven via the satellite carrier, itself driven by the crown 1 10a and the satellites. In position 2, the clutch links the sun gear to the planet carrier, obtaining the second gear ratio of the second epicyclic gear train
Ce perfectionnement de la transmission permet d'obtenir tous les modes de fonctionnement réalisés par les différentes combinaisons des positions des actuateurs et ces modes de fonctionnement sont strictement identiques à ceux décrits dans l'art antérieur. This improvement of the transmission makes it possible to obtain all the operating modes achieved by the different combinations of the positions of the actuators and these modes of operation are strictly identical to those described in the prior art.
Cette nouvelle architecture permet d'obtenir également d'autres gammes de vitesses à partir des deux rapports de la motorisation électrique. En considérant le rapport suivant R:  This new architecture makes it possible to obtain also other ranges of speeds from the two ratios of the electric motorization. Considering the following report R:
^ _ Vmax véhicule sur le rapport LONG au régime max de la machine éiectnque (N ) Vmax véhicule sur le rapport COURT au régime max de la machine électrique (N) ^ _ Vmax vehicle on the LONG ratio at the maximum speed of the machine Eiectnque (N) Vmax vehicle on the ratio COURT at the maximum speed of the electric machine (N)
Le rapport court est obtenu lorsque l'actuateur A3 est en position 1 , et le rapport long est obtenu lorsque A3 est en position 2. The short ratio is obtained when the actuator A3 is in position 1, and the long ratio is obtained when A3 is in position 2.
Avec l'architecture de l'art antérieur, R ne peut être que supérieur à 2, alors que selon l'invention le rapport R peut être inférieur à 2. Ainsi, cette architecture est particulièrement avantageuse lorsqu'une plus importante plage de vitesse du véhicule est nécessaire sur le rapport court. Il est alors ainsi possible d'éviter des changements de rapports électriques sur cette plage de vitesse véhicule plus étalée. Cette possibilité est d'autant plus avantageuse que la machine électrique est plus puissante. With the architecture of the prior art, R can only be greater than 2, whereas according to the invention the ratio R can be less than 2. Thus, this architecture is particularly advantageous when a greater range of vehicle speed is required on the short gear. It is thus possible to avoid electrical shifts in this more spreading vehicle speed range. This possibility is all the more advantageous as the electric machine is more powerful.

Claims

REVENDICATIONS
1 ) Groupe motopropulseur de véhicule automobile de type hybride comportant une machine électrique (22), un moteur thermique, un dispositif de variation de vitesse (14) du moteur thermique comprenant un premier train épicycloïdal de moteur avec un planétaire (34) et une couronne (48) reliés chacun à l'arbre (12) du moteur thermique (10) par un accouplement à commande contrôlée (68, 70) et à une partie fixe du véhicule par un accouplement unidirectionnel (30, 32), et une voie de transmission de mouvement (106, 108) à un essieu moteur (1 6), ledit groupe comporte en outre un dispositif de variation de vitesse de la machine électrique (22) comprenant un deuxième train épicycloïdal avec un planétaire (102a) et une couronne (1 10a) reliés chacun à un essieu moteur (1 6) par un accouplement à commande contrôlée (146a) caractérisé en ce que ladite couronne (1 10a) est liée en rotation avec la machine électrique (22) de façon à être entraînée directement en rotation par ladite machine électrique, et en ce que le planétaire dudit deuxième train est couplé audit premier train épicycloïdal. 1) Hybrid-type motor vehicle powertrain comprising an electric machine (22), a heat engine, a speed variation device (14) for the engine comprising a first epicyclic motor train with a sun gear (34) and a crown (48) each connected to the shaft (12) of the engine (10) by a controlled-drive coupling (68, 70) and a fixed part of the vehicle by a unidirectional coupling (30, 32), and a transmission of motion (106, 108) to a driving axle (1 6), said group further comprises a speed variation device of the electric machine (22) comprising a second epicyclic gear with a sun gear (102a) and a ring gear ( 1 10a) each connected to a driving axle (1 6) by a controlled-controlled coupling (146a) characterized in that said ring gear (1 10a) is rotatably connected to the electric machine (22) so as to be driven directly into rota tion by said electric machine, and in that the sun gear of said second train is coupled to said first epicyclic gear train.
2) Groupe motopropulseur selon la revendication 1 , dans lequel l'accouplement à commande contrôlée (146a) du deuxième train épicycloïdal est un embrayage synchronisé. 2) Power train according to claim 1, wherein the controlled-control coupling (146a) of the second epicyclic gear is a synchronized clutch.
3) Groupe motopropulseur selon l'une des revendications 1 ou 2, dans lequel le rapport de vitesse R est inférieur à 2, avec 3) Powertrain according to one of claims 1 or 2, wherein the speed ratio R is less than 2, with
^ _ Vmax véhicule sur le rapport LONG au régime max de la machine électrique (N) Vmax véhicule sur le rapport COURT au régime max de la machine électrique (N) ^ _ Vmax vehicle on the LONG ratio at the maximum speed of the electric machine (N) Vmax vehicle on the ratio COURT at the maximum speed of the electric machine (N)
4) Véhicule automobile, caractérisé en ce qu'il comprend un groupe motopropulseur selon l'une des revendications 1 à 3. 4) Motor vehicle, characterized in that it comprises a powertrain according to one of claims 1 to 3.
PCT/EP2017/072804 2016-09-29 2017-09-12 Power train having an optimised double epicyclic gear train for a hybrid vehicle WO2018059926A1 (en)

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FR1659346A FR3056463B1 (en) 2016-09-29 2016-09-29 EPICYCLOIDAL DOUBLE TRAIN POWERTRAIN OPTIMIZED FOR A HYBRID VEHICLE
FR1659346 2016-09-29

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2955165A1 (en) 2010-01-14 2011-07-15 Inst Francais Du Petrole SPEED VARIATION TRANSMISSION DEVICE FOR A MOTOR VEHICLE MOTOR CONTROL UNIT AND A HYBRID MOTOR VEHICLE USING SUCH A DEVICE
WO2012007661A1 (en) * 2010-07-16 2012-01-19 IFP Energies Nouvelles Power train having a double epicyclic gear train for a hybrid motor vehicle
FR2962697A1 (en) 2010-07-16 2012-01-20 IFP Energies Nouvelles Power train for hybrid motor vehicle, has movement transmission track comprising toothed wheels and transmitting movement to powered axle, and additional epicyclic gear train connecting epicyclic drive train to movement transmission track
FR3013273A1 (en) 2013-11-15 2015-05-22 IFP Energies Nouvelles POWERTRAIN FOR DRIVING A MOTOR VEHICLE, ESPECIALLY FOR A HYBRID VEHICLE.
FR3014773A1 (en) * 2013-12-17 2015-06-19 IFP Energies Nouvelles POWERTRAIN UNIT WITH A VARIABLE SPEED TRANSMISSION DEVICE, ESPECIALLY FOR A HYBRID VEHICLE.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2955165A1 (en) 2010-01-14 2011-07-15 Inst Francais Du Petrole SPEED VARIATION TRANSMISSION DEVICE FOR A MOTOR VEHICLE MOTOR CONTROL UNIT AND A HYBRID MOTOR VEHICLE USING SUCH A DEVICE
WO2012007661A1 (en) * 2010-07-16 2012-01-19 IFP Energies Nouvelles Power train having a double epicyclic gear train for a hybrid motor vehicle
FR2962697A1 (en) 2010-07-16 2012-01-20 IFP Energies Nouvelles Power train for hybrid motor vehicle, has movement transmission track comprising toothed wheels and transmitting movement to powered axle, and additional epicyclic gear train connecting epicyclic drive train to movement transmission track
FR3013273A1 (en) 2013-11-15 2015-05-22 IFP Energies Nouvelles POWERTRAIN FOR DRIVING A MOTOR VEHICLE, ESPECIALLY FOR A HYBRID VEHICLE.
FR3014773A1 (en) * 2013-12-17 2015-06-19 IFP Energies Nouvelles POWERTRAIN UNIT WITH A VARIABLE SPEED TRANSMISSION DEVICE, ESPECIALLY FOR A HYBRID VEHICLE.

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