SE1250589A1 - Control system for equipment on a vehicle with electric hybrid drive system - Google Patents

Abstract

A vehicle equipped for power take-off operation using direct energy supply from an electric hybrid drive system. A body computer is connected to the CAN system to receive chassis signals. A CAN system has an electronic control module, a transmission control module and a hybrid control module. The electronic control module is electrically connected to the transmission control module and the hybrid control module. A data link-based remote power module is installed on the vehicle to generate body crossover signals to initiate operation of the vehicle's electric hybrid drive system for PTO operation. Several power take-off request switches are electrically connected to the CAN system. The body computer can be programmed to receive a signal from at least one of the PTO request switches to change the operating mode of the PTO operation.

Description

low speed. In addition to providing energy to move the vehicle, the electric hybrid drive system can be used to provide energy for a power take-off associated therewith, sometimes also referred to as an electric power take-off when driven by an electric hybrid drive system and in the vehicle; in turn provides energy for power take-off accessories.

In some vehicles, such as commercial vehicles, a power take-off may be used to drive a hydraulic pump to a vehicle-mounted hydraulic system. [In some configurations, a PTO-powered accessory can be provided with energy while the vehicle is moving. In others, the power take-off accessory vehicle may be stationary and the vehicle may be powered by configurations powered by the internal combustion engine. Still others can be driven while the vehicle is either stationary or in motion.

Operators are set up for the operator for each type of PTO configuration.

In some PTO applications, the specific combustion engine of the vehicle may have a capacity that renders it inefficient as a source of propulsion for the PTO application due to the relatively low energy requirements or intermittent operation of the PTO application. Under such circumstances, the electric hybrid drive system can provide energy for the power take-off, i.e. the electric motor and generator can be used instead of the internal combustion engine to support mechanical power take-off. Where energy requirements are low, the electric motor and generator will normally exhibit relatively low parasite losses compared to an internal combustion engine. quickly provided, the electric motor and generator offer such Where energy requirements are intermittent but response availability without. to cause idle losses of an internal combustion engine.

When a hybrid electric vehicle equipped for electric power take-off enters the operating state for electric power take-off, the electric motor and generator are generally not supplied with energy until an active input signal or power requirement signal is provided. Usually, the power requirement signal is the result of the operator input data being received via a body-mounted switch which includes a data link module. One such module could be the remote power module described in U.S. Patent 6,272,402 to Kelwaski, the entire disclosure of which is incorporated herein by reference. The switch sends the power requirement signal via a data bus such as a Controller Area Network (CAN) system which is now widely used to integrate vehicle control functions.

Only one of the possible A power requirement signal for operation of the drive motor are inputs which could be received by another CAN system. Due to the type, number and complexity of the drive motor control unit connected to the vehicle of the possible inputs that can be provided from a data link module added by a truck equipment manufacturer (TLU), as well as from other sources, problems with adequate operation may arise. of the electric motor and generator, especially during the initial phases of introduction of a single product, or during field maintenance, especially if the vehicle has been modified by the operator or has been damaged. As a consequence, the drive motor may not work as expected. When introducing a product, a TLU may end up in a situation where the data link module cannot provide electric motor-correct power requirement requests for and generator operation for electric power take-off operation due to programming problems, interaction with other vehicle programming or other architectural problems.

[0OO8] An electric hybrid drive system alone can provide energy for the vehicle's power take-off when the power take-off drives a power take-off accessory that is adapted to be used only by a stationary vehicle, such as a lifting accessory or an excavating accessory. In some situations, the electric hybrid drive system may not provide enough energy for the power take-off, and the power take-off thus obtained is supplied with energy by the internal combustion engine. In other situations, the batteries of the electric hybrid drive system may need to be charged. energy In both of these situations, if the PTO gets the PTO so that the internal combustion engine can be started to or to charge Therefore, there is one from the electric hybrid drive system, must stop supplying energy to the PTO, the batteries of the electric hybrid drive. need for a system and method capable of shutting down a power take-off operated by an electric hybrid drive system, so as to provide charge that an internal combustion engine can be started for the power take-off of the electric hybrid drive system batteries. with energy, or for OVERVIEW

According to one embodiment, a vehicle power take-off operation comprises direct supply of power from an electric hybrid drive system for use with a control unit, a network, a data link and programming data.

The CAN system and the body computer are connected to receive a plurality of remote power module installed on the vehicle and chassis signals. The data link-based generates body requirement signals to initiate the operation of electric hybrid drive power take-off operation. to the body computer in response to selected chassis signals that the vehicle's for Programming Data is for is executed by generating control signals for the electric hybrid drive system for PTO operation.

Vehicles equipped for PTO operation using According to another. Embodiment comprises a direct supply of power from an electric hybrid drive system device that responds to a plurality of chassis signals to generate to initiate operation of supporting power take-off operation. a chassis requirement signal for the electric hybrid drive system for the Vehicle further includes means responsive to operator input data and installed on the vehicle to generate body requirement signals for initiating operation of the electric hybrid drive system to support power take-off operation.

According to a further embodiment, direct power supply from an electric hybrid drive system comprises a CAN system, a body computer, a data link-based power module and a plurality of power take-off request switches. The body computer is connected to the CAN system to take a plurality of chassis signals. The CAN system also has an electronically remotely connected and receiving control module, a transmission control module and a hybrid control module. The electronic control module is electrically connected to the transmission control module and the hybrid control module. The data link-based remote power module is installed on the vehicle to generate body demand signals to initiate operation of the vehicle's power take-off operation.

The power take-off request switches are electrically connected electric hybrid drive systems to the CAN system. The body computer can be programmed to at least one of receive a signal from the PTO request switches to change the operating mode of the PTO operation.

Operating system According to another. Embodiments include a power take-off operation using direct power supply from an electric hybrid drive system CAN system and a plurality of vehicles equipped with power take-off request switches. The CAN system has an electronic control module, a body computer and a remote power module. The mentioned plurality of PTO request switches are electronically connected to the CAN system. The body computer can be programmed to at least one of receive a signal from the PTO request operating mode of the PTO operation. change

A power take-off belonging to a vehicle equipped for According to a process, a method for switching power take-off operation using direct supply of power is included in a power take-off request signal from at least one-way plurality from electric hybrid drive systems. CAN system is programmed for receiving a PTO request switch. The method determines if a power take-off request signal from Ininst is one of the said plurality of power take-off request switches. An activation state A power take-off request switch is an active one is modified when the power take-off request signal is from an active PTO request switch.

Vehicles equipped for power take-off operation using According to another embodiment, a direct supply of power from an electric hybrid drive system comprises an internal combustion engine, an electric motor and generator system, a power take-off, a data link-based remote CAN system, a body computer, a power module, a first PTO-driven component and Len. Other PTO-driven component. The power take-off is selectively connected to at least one of the internal combustion engine and the electric motor and generator system to take the internal combustion engine and electric motor - against torque from at least one of the off and generator system.

The body computer is electronically connected to the CAN system to receive a plurality of chassis signals. The CAN system also has an electronic control module, a transmission control module and a hybrid control module. The electronic control module is electrically connected to the transmission control module and the hybrid control module. The data link-based remote power module is installed on the vehicle to generate body collar signals to initiate operation of the vehicle's electric hybrid drive system for PTO operation. The first power take-off component is electrically connected to the CAN system. The second power take-off component is electrically connected to the CAN system. for the PTO-driven body The computer can be programmed to monitor the operation of the first component and the second PTO-driven component. The body computer can further be programmed to monitor which of the internal combustion engine and the electric motor and generator system supplies the power take-off with torque.

According to another embodiment, an operating system for a vehicle equipped for power take-off operation using direct power supply from an electric hybrid drive system1 includes a CAN system, a body computer, an electronic control module, a remote power module and the CAN system a plurality of power take-off components are electronically PTO-driven components. has an electronic control module. Mentioned to the CAN system. The body computer can be programmed to receive a signal from the PTO components to indicate that a PTO component is active.

According to another process, a method for tracking PTO operation of a vehicle equipped for PTO operation using direct power supply from an electric hybrid drive system is included. The activation of a PTO-driven component is monitored by means of a body computer. The torque delivery from an internal combustion engine and an electric motor and generator system is monitored. The method determines whether at least one of the internal combustion engine and the electric motor and generator system delivers torque to a power take-off when the power take-off-driven component is active. The time that a power take-off component is active is monitored. The amount to the PTO combustion engine as well as the electric motor and generator is monitored torque delivered from when the PTO driven component is active.

According to yet another embodiment, a vehicle equipped for power take-off operation comprises an electric hybrid drive system, an internal combustion engine, an electric motor and the use of direct supply from a generator, a power take-off, a CAN system and a body computer, a data link-based remote power module, at least one power take-off component and an external PTO status indicator. The power take-off is selectively connected to at least one of the internal combustion engine and the electric motor and generator system to receive torque from at least one of the internal combustion engine and the electric motor and the generator.

The body computer is connected to the CAN system that is included to receive a plurality of chassis signals. The CAN system also has an electronic control module, a transmission control module and a hybrid control module. The electronic control module is electrically connected to the transmission control module. The data link-based remote power module generates body requirement signals to start operation of the vehicle's electric hybrid drive system for PTO operation. The at least one power take-off component is electrically connected to the CAN system. electrically connected to the CAN system.

The external PTO status indicator is

Control system According to another embodiment, a power take-off operation using a direct power supply of vehicles equipped for a CAN system, at least one and a CAN system, includes an external power take-off status indicator from a power hybrid drive system. has an electronic control module, a body computer, an electronic control module, a hybrid control module and a remote power module. The at least one power take-off component is electronically connected to the CAN system. The body computer can be programmed to receive a signal from the at least one PTO component to indicate that a PTO component is active. The external PTO status indicator is electrically connected to the CAN system.

According to another process, a method is provided for a vehicle equipped for power take-off operation using direct supply of power from an electric hybrid drive system.

Activation and deactivation of a PTO-driven component is monitored using a body computer. A signal to an external PTO status indicator is generated when it detects that the PTO drive component is activated and / or deactivated. An external power take-off status indication is provided on the external power take-off status indicator in response to the signal from the body computer.

Vehicles equipped for power take-off operation using According to another embodiment, a direct supply of power from an electric hybrid drive system comprises a CAN system, a body computer, a data link-based power module wireless power take-off request switch. The body computer is connected to the CAN ~ system to receive a plurality of chassis signals as well as an electronic Inanover module, a remote and a forward transmission control module and a hybrid control module. The electronic control module is electrically connected to and the body computer, the transmission control module the hybrid control module. The data link-based remote power module is set up to generate body crossover signals to initiate operation of the vehicle's electric hybrid drive system for power take-off operation. The remote power module is electrically connected to the CAN system. The wireless PTO request switch is electrically connected to the CAN system via the remote power module.

The body computer can be programmed to receive a signal from the wireless PTO request switch to change the operating state. the power module cyclically shuts off an output signal to the PTO operation The remote PTO request switch in response to a _10_ signal from the PTO request switch to enable a change in PTO operation.

Operating system According to another embodiment, a power take-off operation using direct power supply comprises vehicles equipped for a CAN system and a wireless PTO request switch from an electric hybrid drive system. The CAN system has an electronic control module, a body computer and a remote power module. The wireless PTO request switch is electrically connected to the CAN system via the remote power module.

The body computer can be programmed to receive a signal from the wireless PTO request switch to change the operating state. the power module cyclically shuts off an output signal to the PTO operation The remote wireless PTO request switch in response to a signal from the wireless PTO request switch to enable a change in PTO operation.

Switching on According to another process, a method is included in which a wireless PTO request switch PTO by means of an associated PTO drive uses the direct supply of power from an electric hybrid drive system. A vehicle equipped with the CAN system1 with a remote power module is programmed to receive a PTO request signal with the remote power module from a wireless PTO request switch with a transmitter and a receiver. The method determines if the PTO request signal from the wireless PTO request switch is intended for a change in PTO operation. A power take-off request switch is switched off cyclically as an output signal the wireless response to a signal from the wireless PTO request switch to enable a change in the power take-off operation. An activation state ln a power take-off is modified after the output signal to the ..ll_ wireless cyclic. PTO request switch turned off SHORT FIGURE DESCRIPTION

Fig. 1 is a side view of a vehicle equipped for PTO operation.

Fig. 2 is a high level block diagram of an operating system for the vehicle of Fig. 1.

With respect to a power take-off operation which. can be implemented in Fig. 3 is a diagram of a state machine operating system in Fig. 2.

Figs. 4A-D are schematic illustrations of a hybrid drive system. used to support PTO operation.

Fig. 5 is a system diagram. for chassis and body-initiated hybrid actuating gear motor for PTO operation.

Fig. 6 is a map of pin contacts for input and output of a remote power module in the system diagram of Fig. 5.

Fig. 7 is a map of the input and output data positions of the electrical system controller of Fig. 5.

A hydraulic system.

Figs. 8A-D are schematic views of a vehicle with an electric hybrid drive system with a power take-off drive

Fig. 9 is a system diagram of an operating system for the vehicle of Figs. 8A-D.

Figs. 10A-D are schematic views of a vehicle with an electric hybrid drive system with a power take-off driven hydraulic system with an accumulator and an accumulator isolation valve.

Electric hybrid drive system Fig. 11 is a schematic view of a vehicle with one with a PTO-driven hydraulic system that can be operated remotely.

12 is a schematic view of a vehicle having a hydraulic system whose operation and energy source can be monitored.

Fig. Electric hybrid drive system with power take-off drive

Fig. 13 is a schematic view of a vehicle having a hydraulic system whose operating condition can be communicated to an electric hybrid drive system with power take-off driven user by visual or audible signals.

Fig. 14 is a schematic view of a vehicle having an electric hybrid drive system with a power take-off hydraulic system that can be operated remotely.

DETAILED DESCRIPTION

A truck 1 with a mobile crane and hybrid operation is illustrated.

With reference to the figures, in particular Fig. 1, The truck. l with 'mobile crane and hybrid operation serves as an example of one. medium-sized commercial vehicle that supports a power take-off accessory or an electric power take-off accessory.

It should be noted that the embodiments described herein, possibly with appropriate modifications, may be used with any suitable vehicle. Further information on U.S. Patent No. 7,28l, 595 with "Systen1 For Integrating Body Equipment With a which is assigned to the assignee of the present patent application and in its entirety hybrid drive system can be found in the title Vehicle Hybrid Powertrain", incorporated herein by reference.

The truck 1 with mobile crane and hybrid operation _13_ comprises a power take-off load, here a skylift unit 2 mounted on a platform on a rear part of the truck 1. During configuration for electric power take-off operation, the transmission of the truck 1 with mobile crane and hybrid operation can be folded out to support legs. stabilize the vehicle, and indication parking mode, the parking brake can be applied, from a vehicle-mounted network that the vehicle speed is less than 5 km / h can be received before the vehicle enters the PTO position. For other vehicle types, different indications may indicate readiness for PTO operation, which may but need not include stopping the vehicle.

Upper arms 14 which are pivotally coupled to each other. The Skylift unit 2 comprises a lower arm L3 and a lower arm 3 is in turn mounted to rotate on the truck bed on a support 6 and a rotatable support bracket 7.

The rotatable support bracket 7 comprises a pivot bracket 8 for one end of the lower arm 3. A basket 5 is fixed to the free end of the upper arm 4 and supports personnel during lifting of the basket to, and support for the basket within a working zone.

The basket 5 is pivotally attached to the free end of the arm 4 to maintain a horizontal orientation. A lifting unit 9 is connected between the bracket 7 and the lower arm 3. A pivot coupling 10 connects the cylinder 11 of the lower arm belonging to the unit 9 to the bracket 7. A cylinder rod 12 runs from the cylinder 11 and is pivotally connected to the arm 3 by a pivot pin 13. the lower arm cylinder unit 9 is connected to a pressurized supply of a suitable hydraulic fluid, which makes it possible to lift and source hydraulic fluid can be an automatic transmission or a lowering structure. One for pressurized separate pump. The outer end of the lower arm 3 is connected to the lower and pivotable end of the upper arm 4. A pivot pin 16 connects the outer end of the lower arm 3 of the upper arm 4 to the pivotable end. A compensation cylinder unit or structure 17 for the upper arm is coupled between the lower arm 3 and the upper arm 4 to move the upper arm around the pivot pin 16 to position the upper arm relative to the lower arm 3. The compensation cylinder unit 17 for the lower arm the upper arm allows independent movement of the upper arm 4 in relation to the lower arm 3 and provides compensatory movement between the arms to raise the upper arm with the lower arm. The unit 17 is supplied with pressurized hydraulic fluid from the same source as the unit 9.

Pig. 2 is a schematic high level diagram of an operating system 21 which, with reference to illustrated, represents a system that can be used with operating the vehicle 1. An electrical system control unit 24, one type is linked via a public data link 18 (here CAN bus follows the SAE J1939 standard) to a variety of local control units body computer, illustrated as one which in turn implements direct operation of most of the vehicle 1 functions. The electrical system control unit 24 can also be directly connected to selected inputs and other buses. Direct "chassis input" outputs and includes ignition switch input data, brake pedal position input data, hood position input data and parking brake position sensor, which are connected to supply signals to the electrical system control unit 24.

There may be other input to the electrical system controller 24.

Signals for the operation of the PTO operation from inside a cab The switch package 56 is connected to the electrical system control unit 24 data link 64 SAE J1708 standard. The data link 64 is a connection with low can be implemented by means of one or more cab-mounted switch packages 56. cab-mounted via a non-audience following data rate, usually in the order of 9.7 kbaud. Five controllers in addition to the electrical system controller 24 are illustrated connected to the public data link 18. These controllers are the engine controller 46, the transmission controller 42, an instrument cluster controller 58, a hybrid controller 48 and an ABS controller 50. There may be other controllers on each specific vehicle. Data link 18 is the bus for a public Controller Area Network system (CAN system that complies with the SAE Jl939 standard and with current practice supports _l5__ data transmission up to 250 kbaud. It is understood that other control units may be installed on the vehicle 1 in communicative connection with the data link The conventional ABS control unit 50 controls the application of the brakes 52 and receives wheel speed sensor signals from the sensors 54. The wheel speed is reported via the data link 18 and monitored by the transmission control unit 42.

Parallel type which utilizes a drive system 20 in which the Vehicle 1 is illustrated as an electric hybrid vehicle of the output. from either one. internal combustion engine 28, an electric motor and generator 32, or both parts, can be connected to the drive wheels 26. diesel engine. Like other full-hybrid systems, the internal combustion engine 28 may be intended to capture the vehicle's inertia during braking or deceleration. The electric motor and generator 32 run as a generator from the wheels, and it. generated electricity is stored in batteries during deceleration or deceleration. Later, the stored electrical energy may be used to drive the electric motor and generator 32 instead of or in addition to the internal combustion engine.28 to extend the range of the conventional fuel supply of the vehicle. The drive system 20 is a specific variant of hybrid design which supports power take-off either from the internal combustion engine T128 or from the electric motor and generator 32. When the internal combustion engine 28 is used for power take-off it can be run at an efficient output level and used to support power take-off operation and drive the electric motor and generator 32 its generator mode for charging the propulsion batteries 34. Typically, a power take-off application consumes less energy than the output of an efficient internal combustion engine 28. thermal throttle setting for a

Raises the kinetic energy of the vehicle during deceleration by using the electric motor and generator 32 to catch the used drive wheels 26 to drive the electric motor and the generator 16. 32 In such cases, the automatic clutch 30 disconnects the motor 28 from the electric motor and the generator 32. The motor 28 can provide both electricity and using the power take-off system 22, to be used for power supply to generate propulsion drive wheels 26, or to provide propulsion power and drive a generator to generate electricity. If the power take-off system 22 is a skylift unit 2, it is unlikely that it would be used with the vehicle in motion, and the description here actually presupposes that the vehicle is to be stopped for electric power take-off, but there may be other power take-off applications where this does not occur.

Kinetic energy in response to the electric motor and the generator The drive system 20 provides for the capture of 32 is driven backwards by the motive force of the vehicle. The transitions between positive and negative input from the drive motor are detected and handled by a hybrid controller 48. The braking motor and generator 32 generate electricity during braking which is fed to the propulsion batteries 34 via an inverter 36. checks the ABS link data link traffic to determine if regenerative steering would improve wheel steering 48 kinetic a deceleration increase or regenerative deceleration was initiated. The transmission controller 42 detects related data traffic on the data link 18 and converts this data into control signals to be fed to the hybrid controller 48 via the data link 68. The electric motor and generates below to the hybrid inverter 36. Some electrical energy may be diverted to generator braking electricity which is fed by the propulsion battery. the charge of a conventional 12 volt DC chassis battery 60 via a voltage lowering DC converter 62.

The system for storing electrical energy on the vehicle 1. In the Propulsion Batteries, only vehicles used at the time of writing this may be a plurality of 12-volt applications in general use, and the vehicle 1 the patent application may still be equipped with. a parallel 12-volt system to support the vehicle. To simplify the illustrations, it is not shown that including such a parallel system would allow the use of this. possible parallel systems. easily accessible and inexpensive components designed for use in motor vehicles, such as light bulbs for lighting.

However, the use of 12-volt components can present disadvantages in terms of vehicle weight and involve additional complexity.

The electric motor and generator 32 can be used to propel the vehicle 1 by utilizing energy from the battery 34 via the inverter 36, which provides three-phase current of 340 volts rms. Battery 34 is sometimes referred to as the secondary 12-volt lead-acid battery 60 used to power propulsion battery to differentiate it from a variety of vehicle systems. However, hybrid propulsion tends even less advantage of Thus electrical energy even to drive the power take-off system heavy commercial vehicles pull far cars. is used stored 22. In addition, the electric motor and generator 32 are used to start the engine 28 when the ignition is in the start position. In some circumstances, the motor 28 is used to drive the electric motor and the generator 321 down the transmission 38 in the idle position to generate electricity to charge the battery 34 and / or connected to the power take-off system 22 to generate electricity to charge the battery 34 and drive the power take-off system 22.

This could be in response to heavy use which reduces the charge of the battery 34. Typically, the engine 28 has a far greater output that would be extremely inefficient to use to directly drive entire parasite losses in the engine or idle losses which would the PTO system 22 have the capacity used to drive the PTO system 22. Consequently, it would be the PTO system 22 due to occur if the operation would be intermittent. Greater efficiency is obtained if the motor 22 is run close to its rated output power to charge the battery 34 and provide power for the power take-off, and the motor is then turned off and the battery 34 is used to provide electricity for the electric motor and generator 32 to drive the power take-off system 22.

Which A skylift unit 2 is an example of a system could be used only sporadically by a worker to first raise and later move its basket 5.

Handling of the skylift unit 2 by means of the drive motor 32 means that idling of the motor 28 is avoided. The motor 28 is periodically run at an effective speed to charge the battery if the battery 34 is in a state of relative discharge.

The charge status of the hybrid control unit 48 of the battery 34 is determined by which this information sends the data link 68. in turn requesting that to the transmission control unit 42 via the transmission control unit 42 the motor system 24 be connected to the motor 28 via a message to the power control unit 24, which in turn sends motor operation requests. signals to the engine 28 availability for engine start and stop) the electronic (ECM) 46. may be due to certain programmed (or hard-coded) locks, the control module such as the hood position.

In series with a drive system 20, a motor 28 includes an automatic clutch 30 which allows the motor 28 to be disconnected from the rest of the drive system when the motor is not used to propel or charge the battery 34. The clutch 30 is directly connected to the electric motor and generator 32 which in turn is connected to a transmission 38. The transmission 38 is in turn used to supply energy from the electric motor and generator 32 to either the PTO system 22 or the drive wheels 26.

The transmission 38 is bidirectional and can be used to transfer energy from the drive wheels 26 back to the electric motor and generator 32. The electric motor and generator 32 can be used _19_ to supply the transmission 38 with propulsion energy (either on its own or in conjunction with the motor 28).

When used as a generator, the electric motor and the generator supply electricity to the inverter 36 which provides direct current for charging the battery 34.

An operating system 21 implements interaction between the operating components for the functions just described. The electrical system control unit 24 receives input data regarding throttle position, brake pedal position, ignition state and power take-off input from users and sends these to the transmission control unit 42 which in turn sends the signals to the hybrid control unit 48.

The hybrid controller 48 determines, based on available battery charge status, whether the internal combustion engine 28 is powered.

The hybrid controller 48Im the system controller 24 generates or the drive motor 32 meets the requirements for appropriate signals to supply to the data link 18 to instruct the ECM 46 to turn the motor 28 on and off, and if it is to be started, at which output the motor is to be run. The transmission control unit 42 controls the engagement of the automatic clutch 30. The transmission control unit 42 further regulates the state of the transmission 38 in response to the push button control unit 72 for transmission, and determines what gear the transmission is in or whether the transmission is to deliver driving torque to the drive wheels 26 or to a hydraulic pump. simple pressurized power take-off system 22 power take-off system 22 hydraulic fluid to whereby or if For illustrative purposes only, a vehicle can be delivered equipped with the transmission 38 acts as a hydraulic pump), the transmission must be in neutral. more than one power take-off system and a secondary pneumatic system using a multi-solenoid valve assembly 85 and pneumatic power take-off assembly 87 are shown directly operated by the electrical system control unit 24.

The operation of the PTO 22 is implemented at 15 _20_ several RPM). power modules are data-linked expansion modules for input and output data, which is programmed to use them. If RPMs conventionally via one or more remote power modules (Remote Power Modules, specially designed for the electrical system controller 24, 40 function as power take-off controllers, they may be configured to provide output 70 via fixed wiring and input via fixed wiring 'which are used by movement from the power take-off unit 22 and from the load / skylift unit 2. the skylift unit 2 and position reports are fed to the non-public data link 74 for transmission to the electrical system controller 24, which converts them to specific requests to the other controllers, for example a power take-off request.

The electrical system controller 24 is also programmed to describe RPM units 40 in the Remote Valve Conditions via the PTO unit 22. in more detail in U.S. Patent No. 6,272,402, which is to control power modules assigned to the assignee of the present patent application and which is incorporated herein by reference in its entirety. . At the time patent 6,272,402 was written, what are now referred to as "Remote Interface Modules" were called "Remote Interface Modules". The TLUs that provide the PTO access could order or equip a vehicle with RPM units 40 to support the PTO and provide a switch package 57 for connection to the RPM unit 40. In informal body builders, in this context, TLUs are familiar as RPM unit 40 which is supplied power and from a vehicle accessory is called "body". signals set up for by body builders demand signals ”

Affected by damage to the vehicle or architectural conflicts The body power requirement signals can be distorted as well as via the vehicle's CAN system. Consequently, an alternative _ 21 _ mechanism is included for generating power requirement signals for the power take-off from the vehicle's conventional control network.

One way of enabling the operator to initiate such a power requirement signal without the use of the RPM 40 is to use the vehicle's conventional controls, including the Power Requirements Control Controls which are called PTO drives which derive from such alternatives giving rise to "chassis signals". for mechanisms are called "chassis power requirement signals". An example of this could be that the headlights flash twice when the parking brake is applied, or any other control control use that is easy to remember but does not include the control control option seems idiosyncratic for the PTO, as long as for the specially designed RPM 40.

Both the electrical system control unit 24 function as portals and / or the transmission control unit and conversion units between the various data links. The non-public data links 68 and 74 operate at significantly higher baud rates than the public data link 18, and consequently include buffering for a message sent from one link to another. In addition, a message may be reformatted, or a message on one link may be changed to another type of message on the other link; for example, a motion request via the data link 74 can be converted to a request for transmission connection to the transmission control unit 42. The data links 18, 68 and 74 are from the electrical system control unit 24 all CAN systems and comply with the protocol SAE Jl939.

Jl708.

Data link 64 complies with the SAE protocol

With a state machine 300 representative of Fig. 3 to illustrate a reference, a possible operating structure is used. Entry into the state machine 300 takes place via either of two states 300, 302 where the electric power take-off is activated, depending on whether the motor 28 is running for _ 22 _ In the state where the electric power take-off is activated, the conditions for starting the electric power take-off operation have been met, to charge the propulsion batteries 34 or not. but the actual power take-off accessory gets no energy. Depending on the charge status of the propulsion batteries 34, the engine 28 may be running (state 302) or not running (state 304). automatic clutch 30 engaged (+).

In each state where the motor 28 is running, the charge status which initiates battery charging is less than the state of charge at which the charge ceases to prevent the state (302) activated that in the state 302 where the batteries 34 are charged the electric motor and generator 32 are in their state 304 where as charged, the engine 28 needs to be started and shut down frequently, 304) when the transmission 38 is disengaged. the power take-off is includes generator mode. In the batteries 34, and not the state of the electric motor generator 32 is considered to be defined and can remain in its previous state.

Four power take-off operating states, 306, 308, 310 and 312 are defined. These conditions (if there is a response to either a body power requirement or a chassis power requirement) In the power take-off, the charging of the vehicle battery continues to operate. The condition 306 includes that the engine 28 is running, the automatic clutch 30 is engaged, the electric motor and generator 32 are in gear mode and the transmission has a gear In the 308 state, the engine 28 is off, the automatic clutch 30 is in the engine position and running and the transmission 38 has the gear engaged disengaged, the drive motor in for the power take-off.The states 306 and 308, as a class, are left after loss of body power requirement signal (which may occur as results of cancellation of PTO activation), or after or at the occurrence of a chassis power requirement signal.Changes of state resulting from the charge status of the battery may force changes within the class between states 306 and 308.

The electric power take-off states 310 and 312 are identical to the states 306 and 308, respectively, the body power requirement signal does not result in exit from one of the states 310, 312. Only loss of the chassis power demand signal exits the electric power take-off states 310 or 312. except that loss of results in between 310 and 312) may be due to the charge status of the battery. After loss of a chassis power requirement signal, the exit path from states 310, 312 depends on whether there is a body power requirement signal. If so, the operating state moves from state 310 or 312 to state 306 and 308, respectively. If not, to state 302 304. lost due to exit from conditions where or If the body power requirement signal the power take-off was activated, exit from state 302 or 304 occurs. along the road "OFF". For transitions inonl class, especially from a state where the engine 28 is off to a state running, an intermediate state. included where the automatic clutch 30 is where the motor 28 is can be engaged to allow the drive motor to pull around the motor.

The vehicle in the various states of the state machine as Figs. 4A-D graphically illustrates what is happening on implemented by appropriate programming of the electrical system controller.24. Fig. 4A1 corresponds to state 304, one of the states. where the power take-off is activated. Fig. 4B corresponds to state 302, the second state of the electric power take-off is Fig. 4C to states 308 and Fig. 4D to states 306 and 310. 4A is the internal combustion engine (state (state 102)), state may be undefined, but there is shown motor mode Fig. Where activated. , while in Fig. 100), the corresponding motor 28 of the electric motor and generator 32 is switched off (104). With the electric motor and the generator 32 in motor mode, a state 108 is shown. The transmission is shown with a gear engaged (106), but this In Fig. 4B, battery charging 128 takes place as a battery in ready for discharge. is optional. As a result of 120, the automatic clutch engaged 122 with engine torque as the internal combustion engine is running is supplied via the automatic clutch to the electric motor and the generator 32 operating in its generator position 124. The transmission has no gear engaged 126.

Fig. 4C states the state 308 and 312 of the state machine 300 with the motor 28 turned off 100 and the automatic clutch 30 disengaged 102. The battery 34 discharged corresponds to 108 for driving the drive motor in its operating state 104 to supply torque to the transmission 38 having a gear 126 for to the power take-off. 4D 300 states 306 and 310. The internal combustion engine 28 is running 120 so that the 122 automatic connection for driving the electric motor and the generator 32 supplied feed driving torque corresponds to that of the state machine for supplying energy via one engaged in its generator position to supply electrical energy to a battery during charging (128) and to deliver torque via the transmission to the PTO application.

Figs. 5-7 illustrate a specific actuator and network architecture on which state machine 300 may be implemented. Further information regarding hybrid drive control systems can be found in U.S. Patent Application Serial No. 12 / 239,885, filed September 29, 2008 entitled "Hybrid Electric Vehicle Traction Motor Driven Power Take Off Control System", which is assigned to the assignee of the present patent application and in its incorporated herein by reference, and U.S. Patent Application Serial No. 12 / 508,737, filed July 24, 2009 and assigned to the assignee of the present patent application and incorporated herein by reference in its entirety by reference.The device also provides a secondary pneumatic power take-off drive. 87 to illustrate that conventional power take-offs can be mixed with electric power take-offs on a vehicle.

The electrical system control unit 24 operates the secondary pneumatic power take-off 87 using a multi-solenoid valve assembly 85. Available air pressure can dictate operating response and consequently an air pressure sensor 99 is connected to provide direct input to the electrical system control unit 24. Alternatively, the electric power take-off could be implemented with the air pressure readings that the pneumatic system on the drive motor PTO would be an air pump.

The cable 74, J1939 standard connects the electrical system controller 24 to the RPM 40 is a follow and twisted pair of cables. The RPM unit.4O is shown with inputs (A ~ F) via fixed wiring and an output. A twisted pair cable 64 that complies with the SAE J1708 standard connects the electrical system control unit 24 to a recess 64 for the cab instrument panel on which various control switches are mounted. The public twisted pair J1939 cable 18 connects the electrical system controller 24 to the instrument controller 58, the hybrid controller 48 and the transmission controller 42. The transmission controller 42 is provided with a non-public connection to the cab-mounted transmission control console 72. A connection between the hybrid controller 48 and the console 72 is omitted. .also environments.

And the output pins of the RPM unit 40 for a specific Input Pin A are the requirement circuit 1 of the electric hybrid vehicle, which may be a 12 volt Fig. 6 illustrates in detail the use of application. the input for direct current or earth signal. When active, the drive motor operates continuously. Input pin B is the input for the electric hybrid vehicle's requirement circuit 2, which can be a 12 volt DC or ground signal. When active, the drive motor operates continuously. Input pin C is the input for the electric hybrid vehicle's requirement circuit 3, which can be a 12 volt DC or ground signal. When the signal is active, the drive motor operates continuously. Input pin D is the input for the requirement circuit 4 of the electric hybrid vehicle 10, which may be a 12 volt DC or ground signal. When the signal is active, the drive motor operates continuously. In other words, the designer can provide from which a four remote locations for switches can initiate a power take-off to the drive motor. Input pin E is a remote deactivation input power take-off. operator body power requirement signal for driving the electric hybrid vehicle The signal can be either 12 volts DC or ground. When it is active, the power take-off is Input pin F, the feedback signal is deactivated. for the electric hybrid vehicle's electrical power outlet is connected. This signal is a ground signal that originates or the Output Pin conveys the actual power requirement signal. As mentioned from a PTO-mounted pressure ball lock-based feedback switch. it can be the subject of various readings. In the example, the locking conditions are that the measured vehicle speed is less than 3 miles per hour (approximately 4.8 km / h), the gear is in neutral and the parking brake is applied.

The chassis output pins Fig. 7 illustrates the locations and chassis data pins on the electrical system controller 24. {0O60] secondary mechanism for operating the electric hybrid motor and The system described herein provides a generator using various chassis data from original equipment manufacturers (OEMs). , thus bypassing the input (requirements) signaling units of the TLUs (for example the RPM unit 40). Initiating this mode of operation can be made as simple as desired using a single cab-mounted switch, which may be located in the switch package 56 or may be made more complicated and less obvious using a "code". With the vehicle in, for example, as a result of control input data such as an electric power take-off position, the service brake could be depressed and kept depressed, and the headlights flashed on and off twice. When the service brake is released, subsequent activations of the main beams could generate a signal to change the operation of the drive motor. In any case, the TLU input states are ignored or bypassed when the drive motor is operated by "chassis-initiated" input data.

Referring to Figs. 8A-D, there is shown an electric hybrid drive system having a PTO driven hydraulic system 800. The electric hybrid drive system having a PTO driven hydraulic system. 800 includes an internal combustion engine 802, an electric motor and generator 803, a power take-off 804 and a first hydraulic pump 806 and a second hydraulic pump 808. The power take-off 804 is adapted to receive energy from either the internal combustion engine 802 or the electric motor and generator 803. The power take-off 804 drives the first the hydraulic pump 804 and the second hydraulic pump 808. are shown in the first

Like 8A-D, the hydraulic pump 806 is a fixed displacement hydraulic pump, Fig. As an eccentric pump, while the other hydraulic pump 808 is a variable displacement hydraulic pump, such as a piston pump.

The second hydraulic pump 808 has an actuating motor 810 and / or an actuating solenoid 812 for actuating 808 variable The actuating motor 810 may be an adjustment of the displacement setting of the second hydraulic pump. electric motor, a stepper motor with electromagnet or the like. 812 solenoid unit or similar.

The control solenoid can be an electromagnetic

To drive the power take-off 804 to power the Internal combustion engine 802 could be used for the first hydraulic pump 806, the gear motor 80 and the generator 803 to power the hydraulic pump 808. Use of the first hydraulic pump is usually used to power the second 806 or the second hydraulic pump 80 at 805. A hydraulic load uses the first hydraulic pump load level on a hydraulic system large _28_ 806, hydraulic: load uses the second hydraulic pump 808, driven by the electric motor and generator 803.

The internal combustion engine is driven by the internal combustion engine 802, adapted for while a small to feed torque to the hydraulic pumps 806, 808 at speeds from about 700 rpm to about 2,000 rpm However, the electric motor and generator 803 provide a high torque level at less than about 500 rpm. Therefore, when the electric motor and generator 803 are used to drive the second hydraulic pump 808 via the PTO 804, the displacement of the second hydraulic pump is adjusted to a larger displacement if the hydraulic load on the hydraulic system 805 requires the electric motor and generator 803 to operate at speeds above 1,500 rpm. The control motor 810 and / or the control solenoid 812 increase the displacement of the second pump 808 so that the electric motor and generator 803 can provide sufficient hydraulic fluid flow and pressure to the hydraulic system 805, while operating at speeds lower than 1,500 rpm.

Similarly, if the load inside the hydraulic system 805 decreases, the displacement of the second hydraulic pump 808 can be adjusted to a smaller displacement, and the electric motor and generator 803 can be slowed down to speeds below 1500 rpm.

In addition to adjusting the displacement of the second hydraulic pump 808 when the load of the hydraulic system 805 changes to a load requiring the electric motor and generator to operate at speeds above 1,500 rpm, the second hydraulic pump 808 could also be adjusted by the overhead motor 810 and / or the control solenoid 812 to a displacement that enables the electric motor and generator to work at a higher level of efficiency. For example, if the electric motor and generator produce torque more efficiently at a speed of 1,300 rpm, the displacement of the second hydraulic pump 808 can be adjusted so that the load of the hydraulic system 805 is met by the second hydraulic pump 808, while the electric motor and generator operate at 1,300 rpm.

Includes 8A-D contains 805.

The container is in fluid communication with the hydraulic system 816, 817 hydraulic valves 818, and provides necessary fluid. The hydraulic system 805 depicted in Fig. Container 814 is further used in the hydraulic system as hydraulic fluid as hydraulic motors hydraulic cylinders and to drive the hydraulic motors 816, hydraulic cylinders 817 and hydraulic valves 818.

The electric motor and generator 803 are connected to a battery 820 and an electric control unit 822. The battery 820 stores electrical energy to be used by the electric motor and the generator 803. The derxelectric control unit 822 regulates the electric energy between the battery 820 and the electric motor and the generator 803.

Referring to Fig. 9, a specific actuator and network architecture 900 is shown, whereupon the electric hybrid drive system with a power take-off state.hydraulic system1800 can be implemented. A first remote control 902 and / or a second remote control 904 is included on the TLU components to enable a user to operate the electric motor and 802 output power. The first remote control 902 is an internal combustion engine for operating the hydraulic system 805. variable pedal control, while the second remote control 904 is a hand-operated fine-tuning controls.

Electrically connected to the motor control module, As shown in Fig. 9, the first remote control or the electronic control module, ECM) is 906. The second remote control 904 may be electrically connected to the ECM unit 906 Remote Engine Speed Control Module (RESCM). 908 power module 910.

The RESCM unit 908 and the remote control module 910 (Electronic Control Module, via a remote or a remote ._30_ are electronically connected to an electrical system controller 912 via a cable 914 which complies with the Jl939 standard.

912 is electronically connected to ECM 906 via a cable 916 that complies with the J1939 standard. The J1939 cable 916 also connects an instrument set 918, the Electrical System controller a hybrid control module 920 and a 922 to the ECM unit 906.

The electrical system controller 912 monitors the internal combustion engine 802 803, the requirements and inputs of the hydraulic system 805 from the first transmission control module and the electric motor and generator as well as the remote control 904 and / or the second remote control 906, and generates control signals adapted to operate the internal combustion engine 802 and the electric motor 802.

The requirements of the hydraulic system 805 are greatly affected by input data from the first remote control 904 and / or the second remote control 906.

The electrical system control unit 912 generates speed commands for the internal combustion engine 802 and / or the electric motor and the generator 803 so that the first hydraulic pump 804 and / or 806 of the hydraulic system For example the second 805 electrical system control unit 912 generates a signal which increases or the hydraulic pump meets requirements. can reduce the speed of the electric motor and generator 803 to provide sufficient hydraulic fluid flow from the second hydraulic pump 806. Similarly, the electrical system controller 912 may generate a signal that increases or decreases the speed of the internal combustion engine 802 to provide sufficient hydraulic fluid flow from the first hydraulic pump 804.

Output signal sent to the second hydraulic pump 806 if the Electrical System Control Unit 912 further generates a displacement of the second hydraulic pump 806 is to be modified. If a hydraulic load exceeds a predetermined threshold, the displacement of the second hydraulic pump 806 can be. to increase the general power of the electrical system control unit which causes the displacement of the second hydraulic pump 806, so that the output of the second hydraulic pump 806 is increased, and the speed of the electric motor and generator 803 is maintained within a correct operating range.

In addition, both the first hydraulic pump 804 and the second hydraulic pump 806 could be used simultaneously.

In such a configuration, the electrical system controller 912 generates a control solenoid 812 for the control motor 810 to displace the hydraulic pump 806. output signal or for varying others In such a configuration, a smaller first hydraulic pump 804 may be used, since the second hydraulic pump 806 provides additional pumping capacity to meet the requirements of the hydraulic system 805.

805 can be used to power applications with variable speed hydraulic systems of the present embodiment, such as crane trucks, boom trucks, shredders and other variable speed devices.

In addition, the use of a second variable displacement hydraulic pump 806 improves the energy efficiency of the electric hybrid drive system with a power take-off driven hydraulic system 800, since the motor 802 and / or the electric motor and generator 803 can operate with more efficient settings. Therefore, the fuel consumption or the electrical energy required decreases.

Referring to Figs. 10A-D, a hydraulic hybrid drive system 1000 is shown. The hydraulic hybrid drive system 1000 includes an internal combustion engine 1002 and a hydraulic pump 1004 connected to and driven by a power take-off 1003. The power take-off may be supplied with energy from the internal combustion engine 1002, or may be a power take-off as described above which may be powered by an electric motor and generator 1005 and / or the internal combustion engine 1002.

The 1000 further comprises a hydraulic accumulator 1006 arranged in the hydraulic hybrid drive system fluid communication with the hydraulic pump 1004.

Store pressurized hydraulic fluid from the hydraulic pump 1004. hydraulic reservoir 1007 with the hydraulic pump The hydraulic accumulator 1006 is adapted. to be established in 1004.

The hydraulic reservoir 1007 stores hydraulic fluid under low In addition, a fluid communication pressure is included which can be pressurized by the hydraulic pump 1004.

An accumulator isolation valve 1008 is provided 1006. regulates the flow of 1006. One positions an outlet from the hydraulic accumulator. prevents hydraulic fluid from flowing from the hydraulic accumulator 1006. 1010 would position the accumulator isolation valve 1008 in a plurality of intermediate positions between the first position and the accumulator solenoid also the second position to regulate the flow of hydraulic fluid from the hydraulic accumulator 1006.

A fluid communication 1012 is the hydraulic accumulator provided in 1006.

The accumulator sensor 1012 provides an output signal for the accumulator sensor to monitor the pressure inside the hydraulic accumulator 1012.

The accumulator sensor 1012 can be used to operate the operation 1004 so that the pressure of the hydraulic pump inside the hydraulic accumulator 1006 can be maintained at operating levels, but the hydraulic pump 1004 can only operate intermittently.

The hydraulic hybrid drive system 1000 further includes the vehicle hydraulic system 1013.

The vehicle hydraulic system 1013 may include an open center hydraulic system 1015a, a closed center hydraulic system 1015b, or both the open center hydraulic system 1015a and the closed center hydraulic system 1015b.

Vehicle hydraulic component sensor 1013 includes a 1014.

Vehicle hydraulic component sensor 1014 generates an output signal The vehicle's hydraulic system in response to a hydraulic load inside the vehicle's hydraulic system. The vehicle hydraulic component sensor 1014 is in electrical communication with an electrical system controller 1016.

The electrical system controller 1016 stands in electrical communication RPM unit 1018, an ECM unit 1024, an operator monitor 1026 and an instrument set 1028. with a

The hydraulic component sensor 1014 and causes the RPM unit 1018 to 1022 which to position the RPM unit 1018 is further adapted to receive input signals 1020 from the electrical system controller 1016 monitors output from generating an output signal 1010 the accumulator isolation valve 1008 the accumulator solenoid 10 that the vehicle's hydraulic system 1013 has been activated. Thus, the RPM 1018 may generate the output signal 1022 sent to the accumulator solenoid 101 to position the accumulator isolation valve 1008. The input signals 1020 from the vehicle hydraulic system 1013 could be used to generate the output signal 1022 to operate an initial opening of the accumulator isolation valve 1008. 1014 could be utilized. to generate the output signal 1022 for the Input signals from the vehicle hydraulic component sensor to operate the closing of the accumulator isolation valve 1008 when there is no hydraulic load in the 1013. vehicle hydraulic system

The speed of the internal combustion engine 1002, or even the electrical system control unit 1016 can also be used to shut down the engine 1002 when there is no hydraulic load in the hydraulic system 1013 of the vehicle, by communicating with the ECM unit 1024. Similarly, the electrical system control unit 1016 can be used. to increase the speed of the internal combustion engine 1002 via the ECM 1024 if 1013, the hydraulic pressure in the hydraulic accumulator 1006 is not met by the load of the vehicle hydraulic system and the hydraulic pump 1004 is required to increase the pressure in the hydraulic accumulator 1006.

To generate a message on the operator's display unit The accumulator sensor 1012 can be used 1026, or provide an indication on the instrument set 1028, so that an operator knows the state of the hydraulic accumulator 1006.

Internal parasite leakage in the vehicle hydraulic system 1013 The accumulator isolation valve 1008 reduces it by preventing hydraulic fluid from the hydraulic accumulator 1006 from flowing past the closed accumulator isolation valve 1008.

Referring to Fig. 11, there is shown an electric hybrid drive system having a power take-off hydraulic system 1100. The electric hybrid drive system having a power take-off hydraulic system 1100 includes an internal combustion engine 1102, an electric motor and generator 1103, a power take-off 1104, a second hydraulic pump 1108. first hydraulic pump 1106 and one to receive energy from either the internal combustion engine 1102 The power take-off 1104 1106 and the electric motor and the generator 1103. the first hydraulic pump drives the second hydraulic pump 1108.

1106 eccentric pump, As shown in Fig. 11, the first hydraulic pump is a fixed displacement hydraulic pump, such as one while the second hydraulic pump 1108 is a variable displacement hydraulic pump, such as a piston pump.

The internal combustion engine 1102 could usually be used to power the 1104 to the hydraulic pump 1106, while the 1103 could be used to power the power supply 1104 to power the first electric motor and the generator could usually drive the second hydraulic pump 1108. Use of the first hydraulic pump 110 or the second hydraulic pump 1108 often depends on the load level of a hydraulic system 1105. The hydraulic pump 1106, A large hydraulic load uses the first driven by the internal combustion engine 1102, while a small hydraulic load uses the second hydraulic pump 1108, the driver1 of the engine motor T1 and the generator 1103.

The power take-off 1104 has a first power take-off gear mechanism 1110, a second power take-off gear mechanism 1111 and a third power take-off gear mechanism 1112, adapted to enable engagement and disengagement of the power take-off 1104. The first power take-off gear mechanism 1110 and the second power take-off gear mechanism 110 the third PTO gear mechanism 1112 is spaced from the PTO 1104.

The hydraulic system 1105 depicted in Fig. 11 further includes a container 1114 containing hydraulic fluid used in the hydraulic system 1105.

The container is a fluid communication unit with the hydraulic motor 1116, hydraulic valves 1117 and hydraulic cylinders 1118 belonging to the hydraulic system 1105, and provides the necessary fluid to drive the hydraulic motor 1116, the hydraulic cylinders 1118 and the hydraulic valves 1117.

Fig. 11 also shows an operating device 1120 for the electric hybrid drive system with the power take-off hydraulic system 1100. The operating device 1120 has a first power take-off request switch 1122. The first power take-off request switch 1122 is arranged: a cab of a vehicle having the electric hybrid transmission system 11 with the hydraulic transmission system 11. diaphragm type switch. PTO drive The first PTO request switch may be a The first PTO request switch 1122 requires an operator to be in the vehicle cab to activate the PTO 1104. A PTO switch 1124 is communicatively connected to an RPM unit 1126. The RPM unit 1128 is electrically connected to the electrical control unit 1126. cable 1130 J1939 standards.

The electrical system control unit 1128 is electrically connected to an ECM 1132 J1939 cable 1134. A transmission control module 1136 and a hybrid control module 1138 are also connected to the cable 1134 and are therefore secondly arranged in via one which follows via also electrically connected to the ECM unit 1132 and the electrical system control unit 1128. The second PTO request switch 1124 is mounted on TLU-produced equipment. An example of an application where the second PTO request switch 1124 could be used is in flight refueling, where PTO controls are often connected with fixed wiring to TLU refueling equipment mounted on a truck.

Is also included. 1140 is a communicator with a receiver 1142.

A third power take-off request switch 1140 The third power take-off request switch wireless type Receiver 1142 is electrically connected to the RPM unit 1126. applications request switch of as Example of the 1140 where the third power take-off request switch could ... 3'7_ are used construction work, rescue equipment, he rescue. or other applications where safety requires an operator to be at a distance from a vehicle.

1120 thus provides a variety of ways to activate and deactivate the power take-off 1104 with the actuator offering at least one of 1122, 1124, 1140.

The actuator could be programmed so that only the use of the PTO request switches some of the PTO request switches 1122, 1124, 1140 could operate the PTO 1104. For example, in some embodiments, only the cab-mounted PTO request switch 1122 could be active to operate multiple PTO sockets. the first PTO request switch.1122 and the third PTO request switch 1140, would be active to operate the PTO 1104.

In addition, the actuator 1120 could be reprogrammed so that different PTO request switches 1122, 1124, 1140 could be allowed to operate the PTO 1104. For example, the actuator 1120 could be programmed so that only the first PTO request switch 1122 is active, only the second PTO request switch 1124 is the third PTO switch. is active, while the other PTO request switches are inactive.

Alternatively, the actuator 1120 may be programmed so that the first PTO request switch 1122 is a primary actuator control for the PTO 1104, while at least one of the second and third PTO request switches 1124, 1140 acts as a secondary actuator control for the PTO 1104. Similarly, the actuator 1120 can be programmed to power 1124, at least one of the second and third 1140s acts as the primary actuation control for the power take-off 1104, while the first power take-off request switch acts as a secondary actuation control for the power take-off 1104. According to a further embodiment, the actuator 1120 that the power take-off request switches 1122 are programmed and 1140 may be the primary actuator control for the PTO 1104, while the other of the PTO request switches 1122, 1124, and 1140 act as secondary actuator controls for the PTO 1104.

Thus, the power take-off 1104 of the electric hybrid drive system with a power take-off hydraulic system 1100 can be engaged, disconnected or reconnected from more than one location. Such operation is useful when an operator may need to move around a vehicle to an accessory.

For example, an operator could engage the PTO to operate the PTO drive 1104 with one of the second or third PTO request switches 1122, 1140 and then deactivate the PTO 1104 with the first PTO request switch 1122. Since the actuator 1120 can be reconfigured, the PTO 24 which are active are reprogrammed based on the current use of the vehicle.

By integrating the ECM 1132, the transmission control module 1136, the hybrid control module 1138 and the electrical system controller 1128, the operation of the electric hybrid drive system with a PTO driven hydraulic system 1100 connects the operation of the motor 1102, the electric motor and the generator 1103, and the TLU equipment, such as the hydraulic motor 1116. the operation of the power take-off 1104 can cause the motor 1102, the electric motor and the generator 1103 to operate so that the energy source of the power take-off 1104 is selected based on the load on the system from the hydraulic pumps 1106, 1108. _39_

Fig. 12 shows an electric hybrid drive system1 with a power take-off driven hydraulic system 1200.

The electric hybrid drive system with a power take-off hydraulic system 1200 includes an internal combustion engine 1202, a power take-off 1204, a first hydraulic pump 1206 and a power take-off component an electric motor and generator 1203, 1208, which may be a second hydraulic pump. The power take-off 1204 is adapted to receive energy from either the internal combustion engine 1202, the electric motor and the generator 1203, or both the engine 1202 and the electric motor and the generator 1203.

The PTO 1204 drives the first hydraulic pump 1206 and the second PTO driven component 1208.

The internal combustion engine 1202 could usually be used to power the 1204 power supply to the first hydraulic pump 1206 when the hydraulic demand is high, while the electric motor and generator 1203 could usually be used to power the power take-off 1204 to drive the first hydraulic pump 1206 when the hydraulic requirement is low, while one or both of the internal combustion engine 1202 as well as the electric motor and generator 1203 could be used to power the second power take-off component 1208.

The PTO 1204 has a first PTO gear mechanism 1210, a second PTO gear mechanism 1211 adapted to enable engagement and disengagement of the PTO 1204 and the PTO driven components 1206, 1208.

[O0102] electric hybrid drive system hydraulic system 1200. operation generator Fig. 12 also shows an operating device 1220 to which the operating device 1220 monitors the internal combustion engine 1202 and the electric motor and 1203 the power take-off 1204 and the power take-off components 1206, 1208. The first provides a power take-off drive and power take-off. RPM unit 1224. to a feedback signal 1222 to an RPM unit 1224 is electrical electrical system controller 1226 via a cable 1228 which complies with the J1939 standard. The electrical control unit 1226 is electrically connected to an ECM unit 1230 via the J1939 cable 1232. A transmission control module 1234 and a hybrid control module 1236 are also connected to the cable 1232 and are therefore electrically connected to the ECM unit 1230. The electrical control unit 1226 also provides a second connection mechanism 1211. and The second feedback signal 1238 directly to the electrical system controller 1226.

The first feedback signal 1222 and the second feedback signal 1238 enable the actuator 1220 to monitor the time set. the PTO-driven components 1206, 1208 are active. Thus, when either of the PTO-driven components 1206, 1208 is in operation, the actuator 1220 records which of the PTO-driven components 1206, 1208 is active, and the time period 1208 is active. PTO-driven component 1206, [O0104] Alternatively, air solenoids 1240a, 1240b may generate output signals 1242a, 1242b which are in electrical communication with the electrical system controller 1226.

The air solenoids 1240a, 1240b can be used by systems that use air pressure to activate and deactivate the PTO gear mechanisms 1210, 1211.

The electrical system controller 1226 further monitors the output of the ECM 1230 and the hybrid control module 1236 to determine the amount of torque output from one or both of the internal combustion engines 1202 and the electric motor and generator 1203 used to power the power take-off 1204. Thus, the electrical control unit 12 the torque utilized by the PTO 1204 comes from the internal combustion engine to track the percentage of it 1204, from the electric motor and the generator 1203. By monitoring it and what percentage of the torque comes the torque comes 1202 the torque coming from the electric motor and the generator as part of the generator 1203 the internal combustion engine and the percentage of the actuator 1220 can track all utilization of the power take-off 1204, not just that of the internal combustion engine. The information collected by the electrical system controller 1226 A display unit 1244 can visually depict the time the power take-off 1204 is active, both the sonic percentage of the torque to the PTO 1204 coming from the internal combustion engine 1202 and the percentage of the torque to the PTO 1204 coming from the generator. 1203. In addition, 1226 provide with respect to the time the power take-off 1204 is active, both the sonide electric motor and this electrical system controller may information percentage of the torque to the power take-off 1204 coming from the internal combustion engine 1202 and the percentage of torque to the power take-off 1204 coming from the electric motor and generator 1203 1246, so that remote tracking of the work of the power take-off 1204 can be performed.

With electric hybrid drive system 1300. PTO driven for a reference Fig. 13 shows a PTO driven one includes one with hydraulic system Electric hybrid drive system with 1300 internal combustion engine 1302, an electric motor and generator 1303, a hydraulic system PTO 1304 and a first hydraulic pump 1306 and a second hydraulic pump 1308. 1304 is adapted to receive energy from either the internal combustion engine 1302 or the electric motor and generator 1303. The power take-off 1304 drives the first hydraulic pump 1306 and

1306 eccentric pump, As shown in Fig. 13, the first hydraulic pump is a fixed displacement hydraulic pump, such as one while the second hydraulic pump 1308 is a variable displacement hydraulic pump, such as a piston pump. _42_

The combustion engine 1302 would normally be able to use the power take-off 1304 of the hydraulic pump 1306, while 1303 would be used to power the power take-off 1304 so as to power the first electric motor and the generator to power the second hydraulic pump 1308. The use of the first hydraulic pump 1308 or the second hydraulic pump 1308 often depends on the load level on a hydraulic system 1305. A large hydraulic load uses the first hydraulic pump 1306, driven by the internal combustion engine 1302, while a small hydraulic load uses the second hydraulic pump 1308, the drive electric motor and the generator 1303.

The hydraulic system 1305 depicted in Fig. 13 further includes a container 1314 containing hydraulic fluid used in the hydraulic system 1305.

Container is: ifluidcommunicationnædwæihhydraulmotor1316, hydraulic valves 1317 and hydraulic cylinders 1318 belonging to the hydraulic system 1305, and provides the necessary fluid to drive the hydraulic motor 1316, the hydraulic cylinders 1318 and the hydraulic valves 1317.

Fig. 13 also shows an actuator 1320 for the electric hybrid drive system with the PTO driven hydraulic system 1300. The actuator 1320 has a first PTO request switch 1322. The first PTO request switch 1322 is provided in a cab of a vehicle having the electric hybrid drive 13 with the power hybrid drive drive. may be a diaphragm-type transmission-type console-mounted switch.

The first power take-off request switch 1322 requires an operator to be in the vehicle cab to activate the power take-off 1304. A power take-off request switch 1324 is communicatively connected to an RPM unit 1326. second arranged in the RPM unit 1326: electrically connected to the electrical system control unit 1328. standards.

The electrical control unit 1328 is electrically connected to an ECM unit 1332 J1939 cable 1334. A transmission control module 1336 and a hybrid control module 1338 are also connected to the cable 1334 and are therefore via one which also via electrically connected to the ECM unit 1332 and the electrical control unit 1328. The the second power take-off request switch 1324 is mounted on TLU-produced equipment.

Is also included. 1340 is a communicator with a receiver 1342.

A third power take-off request switch 1340 The third power take-off request switch type Receiver 1342 is electrically connected to the RPM 1326.

The power take-off request switch 1325, which is substantially the same, may also include a fourth identical to the second power take-off request switch 1324. 1340. use of the PTO request switches 1322, [00115] Since the second, third and fourth PTO request switches 1324, 1340, 1325 are arranged outside the vehicle with the electric hybrid drive system with a PTO driven hydraulic system 1300, an operator must be notified that the actuator device 1320 1324, 1340, 1325. A mode selection switch 1340 disposed within a vehicle cab that uses at least one of a PTO 1342 PTO 1344 to indicate a change in the operation of the PTO 1304, enables a visual or audible actuation such as activating the PTO 1304 s or that the PTO 1304 is deactivated. The visual power take-off indicator 1342 and the audible power take-off indicator 1344 are electrically connected to the RPM unit 1326. For example, a lamp could be used as the visual power take-off indicator 1342, while a loudspeaker could be used for the audible power take-off indicator 1344. The operator can select visual and the audible PTO operation indicator 1342, environment where appropriate of the 1344 depending on the vehicle with the electric hybrid drive system with a PTO drive hydraulic system 1300 is operating. For example, if the vehicle is in a noisy environment, a visual power take-off indicator 1342 is more appropriate, while an audible power take-off indicator 1344 can be selected if the vehicle is operating in a bright environment.

Could give a different indication when the power take-off 1304 than when the power take-off 1304 Similarly, the audible power take-off operating indicator 1344 could The visual power take-off operating indicator 1342 is activated, such as a solid light, deactivated, such as a flashing light. give a different indication when the PTO 1304 is activated, such as a sustained tone, than when the PTO 1304 is deactivated, such as an intermittent tone.

Furthermore, both the visual power take-off indicator 1342 and the audible power take-off indicator 1344 could be used simultaneously to provide an indication of the state of the power take-off 1304.

Fig. 14 shows an electric hybrid drive system 1 with a power take-off driven hydraulic system 1400.

The electric hybrid drive system with a power take-off driven hydraulic system 1400 includes an internal combustion engine 1402, an electric motor and generator 1403, a power take-off 1404 and a first hydraulic pump 1406 and a second hydraulic pump 1408.

The PTO 1404 is adapted to receive energy from 452 1402 and the PTO 1404 drives the first hydraulic pump 1406 and the second hydraulic pump 1408. either the internal combustion engine or the electric motor generator 1403. The hydraulic system 1405 depicted in Fig. 14 further comprises a container 1414 containing hydraulic fluid used in hydraulic system 1405.

The fluid communication container contains the hydraulic motor 1416, hydraulic valves 1417 and hydraulic cylinders 1418 of the hydraulic system 1405, and provides the necessary fluid to drive the hydraulic motor 1416, the hydraulic cylinders 1418 and the hydraulic valves 1417.

[O0120] electric hybrid drive system hydraulic system 1400. power take-off request switch 1422 which receiver 1424. 1424 is arranged in communicative connection with an RPM unit 1426. The RPM unit 1426 is electrically connected to an electric system control unit 1428 cable 1430 J1939 standard.

The electrical control unit 1428 is electrically connected to an ECM unit 1432 Jl939 cable 1434. A transmission control module 1436 and a hybrid control module 1438 are also connected to the cable 1434 and are therefore electrically connected to the ECM unit 1432 electrical system control unit 1428.

Fig. 14 also shows an actuator 1420 for which the actuator 1420 has a PTO-driven communicator with a PTO request receiver via one which follows via also connected and

The type also has a power take-off switch 1440, a 1442 shut-off device 1444 for remotely connected equipment. 1440, the control switch and the PTO request switch 1422 of the internal combustion engine wireless control switch and a Remote connected power supply switch 1442 for the internal combustion engine, for the internal combustion engine, the PTO switch 14 of the cyclist 14 The RPM unit 1426 to the receiver 1424, so that the receiver 1424 leaves its output state, which signal change from the receiver 1424 to the RPM unit blocked allows a 1426, such as a signal to turn off the power take-off 1404 1440. other from the power take-off switch 1420 such as that a parking brake a The actuator ensures is engaged and a vehicle ignition key is in the output closed by predetermined position, are met before from the RPM unit 1426 to the receiver. 1424 gets cyclical. Thus, if the PTO 1404 has been turned off based on a lock condition no longer being met, the PTO request switch 1422 will not be able to turn on the PTO 1404, provided the lock condition is still not met. reactivate Output from the RPM 1426 to the receiver 1424 could be turned off cyclically for a period of about 100 ms. Such a time period is short enough for it to be unlikely that an operator will make another control request during this period, and is also short enough for an operator to probably not notice any delay in the power take-off 1404 work. Thus, an operator can use the power take-off request switch 1422 to change the operating condition of the power take-off 1404, 1402 equipment, the hydraulic motor 1416, without having to go the internal combustion engine or the remote into the vehicle cab.

Claims (18)

5 lO 15 20 25 30 _47_ PATENTKRAV Vehicles equipped for power take-off operation using direct power supply from an electric hybrid drive system comprising: an internal combustion engine, an electric motor and generator, a power take-off selectively coupled to at least one of the internal combustion engine and the electric motor and generator system for receiving torque from at least one of the internal combustion engine and the electric motor and generator system, a Controller Area Network (CAN), a body computer connected to the CAN system for receiving a plurality of chassis signals, the CAN system also having an electronic control module, a transmission control module and a hybrid control module, the electronic control module is electrically connected to the transmission control module and the hybrid control module, a data link-based remote power module for generating body collar signals to initiate operation of the vehicle's electric hybrid drive system for power take-off operation, and at least one power take-off component electrically connected to the CAN system, an external power take-off status indicator is electrically connected to the CAN system, the external power take-off status indicator being an audible indicator. A vehicle according to claim 1, wherein the external PTO status indicator is a visual indicator. 10 15 20 25 30 35 _48_ The vehicle of claim 2, wherein the external power take-off status indicator is a light. The vehicle of claim 2, wherein the external PTO status indicator provides a first visual indication when a PTO-driven component is activated and a second visual indication when a PTO-driven component is deactivated. The vehicle of claim 1, wherein the external PTO status indicator is a horn. The vehicle of claim 1, wherein the external power take-off status indicator provides a first audible indication when a power take-off component is activated and an indication when a second audible power take-off component is deactivated. The vehicle of claim 1, wherein the external PTO status indicator has a visual indicator and an audible indicator. A control system for a vehicle equipped for power take-off operation using direct power supply from an electric hybrid drive system, comprising: a CAN system with an electronic control module, a body computer, a hybrid control module and a remote power module, at least one power take-off component that is electronic to the CAN system, the body computer may be programmed to receive a connected signal from the PTO driven component to indicate that a PTO driven component is active, and an external PTO status indicator electrically to the PTO status indicator provides a first connected CAN system, the external 5 10 15 20 25 30 35 _49_ visual indication when a PTO-driven component is activated and a second visual indication when a PTO-driven component is deactivated. The control system of claim 8, wherein the external power take-off status indicator is a visual indicator. The control system of claim 9, wherein the external power take-off status indicator is a light. The control system of claim 8, wherein the external power take-off status indicator is an audible indicator. The control system of claim 11, wherein the external power take-off status indicator is a horn. The control system of claim 8, wherein the external power take-off status indicator provides a first audible indication when a power take-off component is activated and an audible indication when a second power take-off component is deactivated. The control system of claim 8, wherein the external power take-off status indicator has a visual indicator and an audible indicator. A method of achieving power take-off operation a power take-off operation using direct supply of energy to external indication of vehicles equipped for from an electric hybrid drive system, the method comprising: monitoring activation and deactivation of a power take-off component by means of a body computer, generating a signal to a external PTO status indicator When the body computer detects that the PTO driven component is at least one of either activated or deactivated, provide an external PTO status indication on the external PTO status indicator in response to the signal from the body computer. The method of claim 15, wherein the external power take-off status indication is a visual status indication. The method of claim 15, wherein the external power take-off status indication is an audible status indication. The method of claim 15, wherein the external power take-off status indication is at least one of visual status indication and audible status indication.