WO2014065060A1 - 車両用駆動装置 - Google Patents
車両用駆動装置 Download PDFInfo
- Publication number
- WO2014065060A1 WO2014065060A1 PCT/JP2013/075755 JP2013075755W WO2014065060A1 WO 2014065060 A1 WO2014065060 A1 WO 2014065060A1 JP 2013075755 W JP2013075755 W JP 2013075755W WO 2014065060 A1 WO2014065060 A1 WO 2014065060A1
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- WIPO (PCT)
- Prior art keywords
- engine
- torque
- clutch
- speed
- rotational speed
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0215—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission
- F02D41/022—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission in relation with the clutch status
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/18—Control of the engine output torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/0205—Circuit arrangements for generating control signals using an auxiliary engine speed control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/10—Parameters used for control of starting apparatus said parameters being related to driver demands or status
- F02N2200/103—Clutch pedal position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2250/00—Problems related to engine starting or engine's starting apparatus
- F02N2250/06—Engine stall and related control features, e.g. for automatic restart
Definitions
- the present invention relates to a vehicle drive device that controls the start of a vehicle in a vehicle having a manual clutch.
- MT manual transmission
- the driver depresses the clutch pedal to disengage the clutch when starting, and shifts the MT to the first speed.
- the driver then depresses the accelerator pedal to increase the engine rotation speed, gradually returns the clutch pedal to engage the clutch, and transmits the engine torque to the wheels.
- the driver can perform a smooth start by performing an operation of harmonizing the depression of the accelerator pedal, that is, the engine output (engine speed) and the return of the clutch pedal, that is, the engagement of the clutch (engine load). Is doing.
- Patent Document 1 proposes a technology that can easily start a vehicle equipped with an MT and a manual clutch.
- the engine control module detects the shift to the first speed when the vehicle speed is equal to or lower than the predetermined speed, and executes the start control when determining that the throttle opening is smaller than the predetermined value.
- the engine control module controls the engine speed to a target engine speed that is greater than that during idling. Thereby, it can start smoothly, without depressing an accelerator pedal.
- the engine control module determines the target engine speed and controls the engine speed so as to be the target engine speed. For this reason, depending on the situation, there has been a problem in that the engine speed increases more rapidly than the driver intends and the driver feels uncomfortable.
- the present invention has been made in view of such circumstances, and is a vehicle drive device provided with a manual clutch, which can improve control response and prevent engine stall.
- An object is to provide an apparatus.
- the invention according to claim 1, which has been made to solve the above-described problem, includes an engine that outputs engine torque to an output shaft, engine operation means for variably operating engine torque output by the engine, and a vehicle.
- An input shaft that rotates in conjunction with the rotation of the drive wheels, a clutch that is provided between the output shaft and the input shaft, and that allows variable clutch transmission torque between the output shaft and the input shaft, and the clutch
- the clutch operating means for variably operating the transmission torque
- the clutch transmission torque acquiring means for acquiring the clutch transmission torque generated by the clutch
- the engine request Required engine torque calculating means for calculating required engine torque, which is torque, and the clutch acquired by the transmission torque acquiring means.
- a starting engine torque calculating means for calculating a starting engine torque based on the transmission torque, a clutch differential rotational speed which is a differential rotational speed between the output shaft and the input shaft is equal to or greater than a predetermined specified differential rotational speed; and When the engine rotational speed is less than the first specified rotational speed, the engine is controlled so as to be the starting engine torque to execute torque-up control, and the clutch differential rotational speed is less than the predetermined differential rotational speed.
- the engine control means for controlling the engine to achieve the required engine torque and executing normal control.
- engine speed increase required torque calculating means for calculating an engine speed increase required torque that is a torque necessary for increasing the engine speed.
- the start engine torque calculation means calculates the start engine torque based on the engine speed increase required torque.
- load acquisition means for acquiring a load acting on the engine, and the clutch transmission torque and the engine rotation speed increase based on the load.
- the engine has a maintenance torque calculation means for calculating a maintenance torque that is a torque necessary for maintaining the engine speed, and the start engine torque calculation means is configured to calculate the start engine torque based on the maintenance torque. Is calculated.
- the engine control means includes the required engine torque when the required engine torque is greater than the starting engine torque.
- the engine is controlled as follows.
- the invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the engine speed is equal to or higher than the first specified speed and is higher than the first specified speed.
- the engine speed is less than the required engine torque, the closer the engine rotational speed is from the first specified rotational speed to the second specified rotational speed, based on the starting engine torque and the required engine torque, than the starting engine torque.
- the engine speed is the corrected starting engine torque
- the engine is controlled to execute the limit torque increase control, If speed is the second prescribed rotational speed or executes the normal control.
- the invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the braking force applying means for applying a braking force to the vehicle and the braking force of the braking force applying means are variably operated. And the engine control means performs normal control when the braking force operation means is being operated.
- the invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the clutch transmission torque acquisition means is a clutch operation amount detection means for detecting an operation amount of the clutch operation means.
- the second specified rotational speed is set faster as the operation amount of the engine operation means becomes larger.
- the invention according to claim 9 is the invention according to any one of claims 2 to 8, wherein the engine rotation speed increase required torque is set based on an operation amount of the engine operation means.
- the invention according to claim 10 is the invention according to any one of claims 1 to 9, further comprising vehicle speed detection means for detecting a vehicle speed of the vehicle, wherein the engine control means is detected by the vehicle speed detection means. When the determined vehicle speed is higher than a predetermined specified speed, the normal control is executed.
- the starting engine torque calculating means calculates the starting engine torque based on the clutch transmission torque. Then, the engine control means is set to the starting engine torque when the clutch differential rotational speed is in the half clutch state where the clutch differential rotational speed is equal to or higher than the predetermined differential rotational speed and the engine rotational speed is less than the first predetermined rotational speed. Control the engine.
- the engine is controlled to be the starting engine torque calculated according to the clutch transmission torque.
- the starting engine torque increases.
- response delay and engine rotation speed decrease can be prevented, and engine stall can be prevented. it can.
- the engine speed increase required torque calculation means calculates the engine rotation speed increase required torque that is a torque necessary for increasing the engine rotation speed
- the start engine torque calculation means is the engine The starting engine torque is calculated based on the torque required for increasing the rotational speed.
- the starting engine torque is calculated by adding the engine rotational speed increase required torque for increasing the engine rotational speed. For this reason, in the half-clutch state, the engine rotation speed can be increased or maintained at an optimum rotation speed. As a result, a decrease in the engine rotation speed can be prevented, and an engine stall can be prevented more reliably and a suitable start operation can be performed. Sex can be maintained.
- the maintenance torque calculating means calculates the maintenance torque based on the load acting on the engine
- the start engine torque calculation means calculates the start engine torque based on the maintenance torque
- the starting engine torque to which the maintenance torque based on the load is added is calculated. For this reason, in the half-clutch state, the engine rotational speed can be increased or maintained at an optimum rotational speed. As a result, a decrease in engine rotation speed is prevented, engine stall can be more reliably prevented, and suitable startability can be maintained.
- the engine control means controls the engine so as to be the required engine torque when the required engine torque is larger than the starting engine torque.
- the engine is set so that the requested engine torque reflects the driver's intention as it is. Is controlled. For this reason, when the driver performs an appropriate operation, the behavior of the engine torque according to the accelerator pedal operation does not deviate from the driver's intention, so that the driver can prevent engine stall without feeling uncomfortable. .
- the corrected start engine torque calculation means is configured such that when the engine speed is equal to or higher than the first specified speed and lower than the second specified speed, the engine speed is calculated from the first specified speed.
- the corrected start engine torque is calculated such that the degree of influence of the required engine torque becomes greater than the start engine torque as the speed becomes closer to the second specified rotational speed.
- an engine control means controls an engine so that it may become a correction start engine torque. When the engine rotational speed reaches the second specified rotational speed, the influence degree of the starting engine torque becomes zero, and the engine torque is normal control that matches the required engine torque.
- the engine control means executes normal control when the braking force operation means is operated.
- the clutch transmission torque acquisition means is a clutch operation amount detection means for detecting an operation amount of the clutch operation means.
- the operation amount of the clutch operating means can be acquired with a simple structure.
- the second specified rotational speed is set faster as the operation amount of the engine operating means becomes larger.
- the upper limit of the engine speed at which the limit torque up control intervenes becomes faster. For this reason, even if the upper limit of the engine rotation speed at which the engine torque is increased as compared with the normal control is increased by the limit torque increase control, the driver does not feel uncomfortable. For this reason, it is possible to increase the engine speed region in which the limit torque increase control intervenes while suppressing the driver's uncomfortable feeling, and it is possible to more reliably prevent engine stall.
- the required engine speed increase torque is set based on the operation amount of the engine operation means.
- the starting engine torque is calculated so that the engine speed increases. For this reason, the engine speed is controlled according to the driver's intention, and the driver does not feel uncomfortable.
- the engine control means performs normal control when the vehicle speed detected by the vehicle speed detection means is faster than a predetermined specified speed.
- FIG. 1 It is a block diagram of the vehicle drive device of this embodiment.
- This is "clutch transmission torque mapping data” representing the relationship between the clutch stroke and the clutch transmission torque.
- It is a graph which shows the outline
- It is a conceptual diagram showing start engine torque Tes1.
- 5 is a flowchart of “clutch / engine cooperative control”. It is a figure showing "the 2nd specified rotation speed setting data” which is an example of the mapping data showing the relationship between accelerator opening degree Ac and 2nd specified rotation speed N2.
- FIG. 6 is a flowchart of “torque up control” which is a subroutine of “clutch / engine cooperative control” in FIG. 5.
- FIG. 8 is a flowchart of “engine speed increase required torque calculation processing” that is a subroutine of “torque up control” in FIG. 7.
- FIG. It is a figure showing "target engine speed setting data” which is an example of the mapping data showing the relationship between accelerator opening degree Ac and target engine speed Net.
- 8 is a flowchart of “maintenance torque calculation processing” that is a subroutine of “torque up control” in FIG. 7.
- It is a figure showing "compressor auxiliary machine torque calculation data” which is an example of the mapping data showing the relationship between engine rotational speed Ne and compressor auxiliary machine torque Tac.
- FIG. 6 is a flowchart of “limit torque up control” that is a subroutine of “clutch / engine cooperative control” in FIG. 5.
- Engine rotational speed increase required torque calculation data which is an example of mapping data representing the relationship between the difference rotational speed between the target engine rotational speed Net and the current engine rotational speed Ne and the engine rotational speed increase required torque Ten, is shown.
- FIG. It is a table
- FIG. 1 is a configuration diagram showing the overall configuration of a vehicle drive device 1 for a vehicle including an engine 2.
- thick lines indicate mechanical connections between the devices, and arrows with broken lines indicate control signal lines.
- an engine 2 As shown in FIG. 1, an engine 2, a clutch 3, a manual transmission 4, and a differential device 17 are arranged in series in this order in the vehicle.
- the differential device 17 is connected to drive wheels 18R and 18L of the vehicle.
- the drive wheels 18R and 18L are front or rear wheels or front and rear wheels of the vehicle.
- the vehicle has an accelerator pedal 51, a clutch pedal 53, and a brake pedal 56.
- the accelerator pedal 51 variably operates the engine torque Te output from the engine 2.
- the accelerator pedal 51 is provided with an accelerator sensor 52 that detects an accelerator opening degree Ac that is an operation amount of the accelerator pedal 51.
- the clutch pedal 53 is for making the clutch 3 in a disconnected state or a connected state and making a clutch transmission torque Tc described later variable.
- the vehicle has a master cylinder 55 that generates a hydraulic pressure corresponding to the amount of operation of the clutch pedal 53.
- the master cylinder 55 is provided with a clutch sensor 54 that detects the stroke of the master cylinder 55.
- the brake pedal 56 is provided with a brake sensor 57 that detects an operation amount of the brake pedal 56.
- the vehicle has a brake master cylinder (not shown) that generates hydraulic pressure according to the operation amount of the brake pedal 56, and a brake device 19 that generates braking force on the wheels according to the master pressure generated by the brake master cylinder. Yes.
- Engine 2 is a gasoline engine or diesel engine that uses hydrocarbon fuel such as gasoline or light oil.
- the engine 2 includes an output shaft 21, a throttle valve 22, an engine rotation speed sensor 23, an oil temperature sensor 25, and a fuel injection device 28.
- the output shaft 21 rotates integrally with a crankshaft that is driven to rotate by a piston.
- the engine 2 outputs the engine torque Te to the output shaft 21.
- the cylinder head of the engine 2 is provided with an ignition device (not shown) for igniting the air-fuel mixture in the cylinder.
- the throttle valve 22 is provided in the course of taking air into the cylinder of the engine 2.
- the throttle valve 22 adjusts the amount of air taken into the cylinder of the engine 2.
- the fuel injection device 28 is provided in the middle of a path for taking air into the engine 2 or in the cylinder head of the engine 2.
- the fuel injection device 28 is a device that injects fuel such as gasoline or light oil.
- the engine rotation speed sensor 23 is disposed in the vicinity of the output shaft 21.
- the engine rotation speed sensor 23 detects an engine rotation speed Ne, which is the rotation speed of the output shaft 21, and outputs a detection signal to the control unit 10.
- the oil temperature sensor 25 detects the oil temperature t of engine oil that lubricates the engine 2 and outputs a detection signal to the control unit 10.
- the output shaft 21 of the engine 2 is connected to a flywheel 31 that is an input member of the clutch 3 described later.
- the generator 26 and the compressor 27a of the air conditioner 27 are connected to the output shaft 21 of the engine 2 or a shaft or gear that rotates in conjunction with the output shaft 21.
- the generator 26 generates electric power necessary for the vehicle.
- the clutch 3 is provided between an output shaft 21 of the engine 2 and a transmission input shaft 41 of a manual transmission 4 described later.
- the clutch 3 connects or disconnects the output shaft 21 and the transmission input shaft 41 by operating the clutch pedal 53 by the driver, and also transmits a clutch transmission torque Tc between the output shaft 21 and the transmission input shaft 41 (shown in FIG. 2).
- the clutch 3 includes a flywheel 31, a clutch disk 32, a clutch cover 33, a diaphragm spring 34, a pressure plate 35, a clutch shaft 36, a release bearing 37, and a slave cylinder 38.
- the flywheel 31 has a disc shape and is connected to the output shaft 21.
- the clutch shaft 36 is connected to the transmission input shaft 41.
- the clutch disk 32 has a disk shape, and friction materials 32a are provided on both surfaces of the outer peripheral portion thereof.
- the clutch disk 32 faces the flywheel 31 and is spline-fitted to the tip of the clutch shaft 36 so as to be axially movable and non-rotatable.
- the clutch cover 33 includes a flat cylindrical cylindrical portion 33a and a plate portion 33b extending from one end of the cylindrical portion 33a in the rotation center direction. The other end of the cylindrical portion 33 a is connected to the flywheel 31. For this reason, the clutch cover 33 rotates integrally with the flywheel 31.
- the pressure plate 35 has a disk shape with a hole in the center. The pressure plate 35 is disposed on the opposite side of the flywheel 31 so as to face the clutch disk 32 and be movable in the axial direction. A clutch shaft 36 is inserted through the center of the pressure plate 35.
- the diaphragm spring 34 includes a ring-shaped ring portion 34a and a plurality of leaf spring portions 34b extending inward from the inner peripheral edge of the ring portion 34a.
- the leaf spring part 34b is inclined so as to be gradually located on the side of the leaf part 33b toward the inner side.
- the leaf spring part 34b is elastically deformable in the axial direction.
- the diaphragm spring 34 is disposed between the pressure plate 35 and the plate portion 33b of the clutch cover 33 in a state where the plate spring portion 34b is compressed in the axial direction.
- the ring portion 34 a is in contact with the pressure plate 35.
- plate spring part 34b is connected with the inner periphery of the board
- a clutch shaft 36 is inserted through the center of the diaphragm spring 34.
- the release bearing 37 is attached to the housing of the clutch 3 (not shown). At the center of the release bearing 37, a clutch shaft 36 is inserted and disposed so as to be movable in the axial direction.
- the release bearing is composed of a first member 37a and a second member 37b that face each other and are relatively rotatable. The first member 37a is in contact with the tip of the plate portion 33b.
- the slave cylinder 38 has a push rod 38a that moves forward and backward by hydraulic pressure.
- the tip of the push rod 38 a is in contact with the second member 37 b of the release bearing 37.
- the slave cylinder 38 and the master cylinder 55 are connected by a hydraulic pipe 58.
- the clutch 3 of the present embodiment is a normally closed clutch in which the clutch 3 is in a connected state when the clutch pedal 53 is not depressed.
- the manual transmission 4 is a stepped transmission that selectively switches between a plurality of gear stages having different gear ratios between the transmission input shaft 41 and the transmission output shaft 42.
- One of the transmission input shaft 41 and the transmission output shaft 42 includes a plurality of idle gears that can freely rotate with respect to the shaft and a plurality of fixed gears that mesh with the idle gear and cannot rotate with respect to the shaft. Neither is shown).
- the manual transmission 4 is provided with a selection mechanism that selects one of the idle gears among the plurality of idle gears and fits the attached shaft in a non-rotatable manner. With this configuration, the transmission input shaft 41 rotates in conjunction with the drive wheels 18R and 18L. Further, the manual transmission 4 includes a shift operation mechanism (not shown) that converts a driver's operation of the shift lever 45 into a force for operating the selection mechanism.
- a transmission input shaft rotational speed sensor 43 that detects the rotational speed of the transmission input shaft 41 (transmission input shaft rotational speed Ni) is provided.
- the transmission input shaft rotational speed Ni (clutch rotational speed Nc) detected by the transmission input shaft rotational speed sensor 43 is output to the control unit 10.
- a transmission output shaft rotational speed sensor 46 for detecting the rotational speed of the transmission output shaft 42 (transmission output shaft rotational speed No) is provided.
- the transmission output shaft rotational speed No detected by the transmission output shaft rotational speed sensor 46 is output to the control unit 10.
- the control unit 10 performs overall control of the vehicle.
- the control unit 10 has a storage unit (all not shown) composed of a CPU, RAM, ROM, nonvolatile memory, and the like.
- the CPU executes programs corresponding to the flowcharts shown in FIGS. 5, 7, 8, 10, and 12.
- the RAM temporarily stores variables necessary for executing the program.
- the storage unit stores the above-mentioned program, “clutch transmission torque mapping data” shown in FIG. 2, and mapping data shown in FIGS. 6, 9, 11, and 13.
- the control unit 10 calculates a required engine torque Ter, which is the torque of the engine 2 requested by the driver, based on the accelerator opening Ac of the accelerator sensor 52 based on the operation of the accelerator pedal 51 of the driver. Then, the control unit 10 adjusts the opening S of the throttle valve 22 based on the required engine torque Ter, adjusts the intake air amount, adjusts the fuel injection amount of the fuel injection device 28, and controls the ignition device. .
- the supply amount of the air-fuel mixture containing fuel is adjusted, the engine torque Te output from the engine 2 is adjusted to the required engine torque Ter, and the engine rotational speed Ne is adjusted.
- the engine rotation speed Ne is maintained at an idling rotation speed (for example, 700 rpm).
- the control unit 10 refers to the clutch stroke Cl detected by the clutch sensor 54 in “clutch transmission torque mapping data” that represents the relationship between the clutch stroke Cl and the clutch transmission torque Tc shown in FIG. Calculates a clutch transmission torque Tc that is a torque that can be transmitted from the output shaft 21 to the transmission input shaft 41.
- the control unit 10 calculates the vehicle speed V based on the transmission output shaft rotational speed No detected by the transmission output shaft rotational speed sensor 46.
- the control unit 10 subtracts the transmission input shaft rotational speed Ni detected by the transmission input shaft rotational speed sensor 43 from the engine rotational speed Ne detected by the engine rotational speed sensor 23, thereby obtaining the differential rotational speed of the clutch 3.
- the clutch differential rotation speed ⁇ c is calculated. That is, the clutch differential rotation speed ⁇ c is the differential rotation speed of the clutch 3, that is, the differential rotation speed between the output shaft 21 and the transmission input shaft 41.
- “Torque-up control” is, as shown in FIG. 3, compared to the engine torque Te (torque indicated by the one-dot chain line in FIG. 3) based on the requested engine torque Ter calculated based on the driver's operation of the accelerator pedal 51. As shown by the solid line 2 in FIG. 3, the control is to increase the engine torque Te (3 in FIG. 3).
- the engine torque Te generated by the engine 2 is increased. (3 in FIG. 3), the vehicle starts while automatically maintaining a suitable engine speed while preventing engine stall.
- the control unit 10 when starting the vehicle, the control unit 10 differs from the other states, as shown in FIG. 4, the clutch transmission torque Tc, the engine speed increase required torque Ten, and the maintenance torque Tk. By adding, start engine torque Tes1 is calculated. Then, the control unit 10 controls the engine 2 so that the engine torque Te becomes the starting engine torque Tes1.
- the engine speed increase required torque Ten is a torque required to increase the engine 2 rotation speed to the target engine rotation speed Net, that is, a torque required to increase the engine speed to an optimum speed for starting. is there.
- the maintenance torque Tk maintains the target engine rotational speed Net when “torque up control” and “restricted torque up control” described later are executed in addition to the clutch transmission torque Tc and the engine speed increase required torque Ten. This torque is necessary for the calculation, and is calculated by a load by an auxiliary machine connected to the output shaft 21 of the engine 2.
- the control unit 10 determines that the clutch differential rotational speed ⁇ c is a specified differential rotational speed A (for example, 500 rpm) based on detection signals output from the engine rotational speed sensor 23 and the transmission input shaft rotational speed sensor 43. ) If it is determined that the above is true (S14: YES), the program proceeds to S15. On the other hand, if the control unit 10 determines that the clutch differential rotation speed ⁇ c is less than the specified differential rotation speed A (S14: NO), the program proceeds to S18.
- a specified differential rotational speed A for example, 500 rpm
- the second specified rotational speed N2 is a rotational speed that is faster than the first specified rotational speed N1.
- the second specified rotation speed N2 is calculated by referring to “second specified rotation speed setting data” that represents the relationship between the accelerator opening degree Ac and the second specified rotation speed N2 shown in FIG. That is, the second specified rotational speed N2 is set to be faster as the accelerator opening degree Ac is larger. If the current accelerator opening Ac detected by the accelerator sensor 52 is between the accelerator openings specified in the “second specified rotational speed setting data” shown in FIG.
- the second specified rotational speed N2 is calculated by linearly interpolating the second specified rotational speed N2 corresponding to the accelerator opening on both sides of Ac.
- control unit 10 executes “torque up control”.
- the “torque up control” will be described with reference to the flowchart shown in FIG. When S16 ends, the program returns to S11.
- control unit 10 executes “limit torque up control”.
- the “limit torque up control” will be described with reference to the flowchart shown in FIG. When S17 ends, the program returns to S11.
- control unit 10 calculates the clutch transmission torque Tc by referring to the clutch stroke Cl detected by the clutch sensor 54 in the “clutch transmission torque mapping data” shown in FIG.
- the program proceeds to S16-2.
- control unit 10 calculates the required engine speed increase torque Ten.
- the calculation of the engine speed increase required torque Ten will be described with reference to the flowchart of “engine speed increase required torque calculation process” shown in FIG.
- the program proceeds to S21.
- the control unit 10 calculates a target engine rotation speed Net.
- the target engine speed Net is a control target of the engine speed Ne.
- the control unit 10 sets the accelerator opening degree Ac detected by the accelerator sensor 52 to “target engine rotation speed setting data that represents the relationship between the accelerator opening degree Ac and the target engine rotation speed Net shown in FIG. ”Is referred to for calculation.
- the target engine speed Net is set to be faster as the accelerator opening degree Ac is larger.
- the target engine speed Net is calculated by linearly interpolating the "target engine speed” corresponding to the "accelerator opening” on both sides of the degree Ac.
- the control unit 10 calculates an engine speed change ⁇ e that is a time change of the engine speed Ne. Specifically, the control unit 10 calculates a time Tn required to increase the current engine speed Ne to the target engine speed Net calculated in S21 when the engine 2 exhibits the maximum capacity. . Next, the control unit 10 calculates the engine rotational speed change ⁇ e by dividing the value obtained by subtracting the current engine rotational speed Ne from the target engine rotational speed Net by the above-described necessary time Tn.
- the program proceeds to S23.
- the control unit 10 calculates the engine speed increase required torque Ten based on the following equation (1).
- Ten Ie ⁇ ⁇ e (1)
- Ten Ie ... Engine inertia ⁇ e ... Engine speed change
- the engine inertia Ie is the moment of inertia of the rotating member of the engine 2.
- the rotating member of the engine 2 includes a crankshaft, a connecting rod, a piston, an output shaft 21, a flywheel 31, a clutch cover 33, a pressure plate 35, and a diaphragm spring 34.
- the engine inertia Ie is set in advance.
- the control unit 10 calculates the maintenance torque Tk.
- the maintenance torque Tk is a torque necessary for maintaining the target engine speed Net in addition to the clutch transmission torque Tc and the engine speed increase required torque Ten. The calculation of the maintenance torque Tk will be described with reference to the flowchart of the “maintenance torque calculation process” shown in FIG.
- the control unit 10 calculates the auxiliary machine torque Ta.
- the auxiliary machine torque Ta is a torque necessary for driving the auxiliary machine connected to the output shaft 21 of the engine 2 and is a total of the friction torque and the inertia torque of the auxiliary machine.
- the control unit 10 refers to the current engine rotation speed Ne by referring to “compressor auxiliary machine torque calculation data” representing the relationship between the “engine rotation speed” and the “compressor auxiliary machine torque” shown in FIG.
- the auxiliary machine torque Tac is calculated.
- the control unit 10 performs the auxiliary operation connected to the output shaft 21 of the engine 2 and the generator auxiliary equipment torque Tag of the generator 26 which is one of the auxiliary equipment. Calculate the auxiliary torque of the machine. Then, the control unit 10 calculates the auxiliary machine torque Ta by adding up the compressor auxiliary machine torque Tac, the generator auxiliary machine torque Tag, and the like. When S32 ends, the program proceeds to S33.
- the control unit 10 calculates the adjustment torque ⁇ .
- the adjustment torque ⁇ is a torque necessary in addition to the engine friction torque Tef and the auxiliary machine torque Ta, and is calculated based on information such as the engine rotation speed Ne.
- the program proceeds to S34.
- the control unit 10 calculates the maintenance torque Tk based on the following expression (2).
- Tk Tef + Ta + T ⁇ (2)
- Tk Maintenance torque Tef: Engine friction torque
- Ta Auxiliary machine torque
- T ⁇ Adjustment torque
- the control unit 10 calculates the starting engine torque Tes1 based on the following equation (3).
- Tes1 Tc + Ten + Tk (3)
- Tes1 Starting engine torque
- Tc Clutch transmission torque
- Ten Torque required to increase engine speed
- Tk Maintenance torque
- control unit 10 controls the throttle valve 22, the fuel injection device 28, and the ignition device so that the engine torque Te generated by the engine 2 becomes the starting engine torque Tes1 calculated in S16-4. .
- the program returns to S11 of FIG.
- control unit 10 controls the throttle valve 22, the fuel injection device 28, and the ignition device so that the engine torque Te generated by the engine 2 becomes the required engine torque Ter.
- the program returns to S11 of FIG.
- control unit 10 calculates the starting engine torque Tes1.
- the calculation method of the starting engine torque Tes1 is the same as the processing of S16-1 to S16-4 of “torque up control” shown in FIG.
- the program proceeds to S17-2.
- the control unit 10 corrects the starting engine torque Tes1 based on the current engine speed Ne. This will be specifically described below.
- the control unit 10 calculates the first rotational speed difference ⁇ a by subtracting the first specified rotational speed N1 from the current engine rotational speed Ne (4 in FIG. 3) based on the following equation (4).
- ⁇ a Ne ⁇ N1 (4)
- ⁇ a First rotational speed difference Ne: Current engine rotational speed N1: First specified rotational speed
- control unit 10 calculates the second rotational speed difference ⁇ b by subtracting the current engine rotational speed Ne (4 in FIG. 3) from the second specified rotational speed N2 based on the following equation (5).
- ⁇ b N2-Ne (5)
- N2 Second specified rotational speed Ne: Current engine rotational speed
- Tes2 (Tes1 ⁇ ⁇ b + Ter ⁇ ⁇ a) / ( ⁇ a + ⁇ b) (6)
- control unit 10 controls the throttle valve 22, the fuel injection device 28, and the ignition device so that the engine torque Te generated by the engine 2 becomes the modified start engine torque Tes2 calculated in S17-2. To do.
- the program returns to S11 of FIG.
- control unit 10 controls the throttle valve 22, the fuel injection device 28, and the ignition device so that the engine torque Te generated by the engine 2 becomes the required engine torque Ter.
- the program returns to S11 of FIG.
- the control unit 10 calculates the starting engine torque Tes1 based on the clutch transmission torque Tc in S16-4 of FIG.
- the control unit 10 engine control means
- the control unit 10 determines that the clutch differential rotational speed ⁇ c is in the half-clutch state where the clutch differential rotational speed ⁇ c is equal to or greater than the specified differential rotational speed A (YES determination in S14 of FIG. 5)
- FIG. In S16-6, the engine 2 is controlled so that the engine torque Te becomes the starting engine torque Tes1.
- the engine 2 is controlled to have the starting engine torque Tes1 calculated according to the clutch transmission torque Tc.
- the starting engine torque Tes1 increases. For this reason, the start engine torque Tes1 increases without waiting for a decrease in the engine rotation speed Ne accompanying an increase in the clutch transmission torque Tc, so that a decrease in the engine rotation speed Ne can be prevented and an engine stall can be prevented. Can be prevented.
- control unit 10 (necessary engine speed increase torque calculating means) needs to increase the engine speed, which is a torque required to increase the engine speed Ne in the “engine speed increase required torque calculation process” in FIG. Torque Ten is calculated. Then, the control unit 10 (starting engine torque calculating means) calculates the starting engine torque Tes1 based on the engine speed increase required torque Ten in S16-4 of FIG.
- the starting engine torque Tes1 to which the engine rotational speed increase necessary torque Ten for increasing the engine rotational speed Ne is added is calculated. For this reason, even if the engine rotational speed Ne is reduced in the half-clutch state, the engine rotational speed Ne can be recovered, and the engine rotational speed Ne is prevented from continuing to decrease. be able to. For this reason, engine stall can be prevented more reliably.
- control unit 10 maintenance torque calculation means calculates a maintenance torque Tk based on various loads acting on the engine 2 in the “maintenance torque calculation process” shown in FIG. Then, the control unit 10 (starting engine torque calculating means) calculates the starting engine torque Tes1 based on the maintenance torque Tk in S16-4 of FIG.
- control unit 10 engine control means
- the control unit 10 determines that the required engine torque Ter is larger than the starting engine torque Tes1 or 2 (determined as YES in S16-5 in FIG. 7 or S17-3 in FIG. 12). Then, the engine 2 is controlled so as to obtain the required engine torque Ter.
- the engine 2 is controlled to be the required engine torque Ter reflecting the driver's intention. For this reason, since engine torque Te does not deviate from the driver's intention, the driver's uncomfortable feeling can be suppressed. In the above case, the engine stall does not occur because the required engine torque Ter is larger than the starting engine torque Tes1.
- control unit 10 determines that the engine rotational speed Ne is equal to or higher than the first specified rotational speed N1 and lower than the second specified rotational speed N2 (in S15 of FIG. 5).
- the control unit 10 executes “limit torque up control” for controlling the engine 2 so that the engine torque Te becomes the corrected start engine torque Tes2.
- control unit 10 executes “normal control” in S18.
- the clutch stroke Cl which is the operation amount of the clutch pedal 53 detected by the clutch sensor 54 (clutch transmission torque acquisition means), is detected.
- the control unit 10 obtains the clutch transmission torque Tc by referring to the clutch stroke Cl in the “clutch transmission torque mapping data” shown in FIG. As a result, the clutch transmission torque Tc can be reliably acquired by a simple structure / method.
- control unit 10 refers to the accelerator opening degree Ac to the “second specified rotation speed setting data” to acquire the second specified rotation speed N2.
- the second specified rotational speed N2 is set faster as the accelerator opening Ac increases.
- control unit 10 refers to the accelerator opening degree Ac in “target engine rotation speed setting data” shown in FIG. 9 in S21 of FIG. 8, so that the larger the accelerator opening degree Ac, the higher the target engine rotation speed. Set Net. Then, in S22 and S23, the control unit 10 calculates the engine speed increase required torque Ten based on the target engine speed Net.
- the accelerator pedal 51 greatly and requests a higher engine speed Ne
- the starting engine torques Tes1 and 2 are calculated so that the engine speed Ne increases.
- the engine speed Ne is controlled according to the driver's intention, and the driver does not feel uncomfortable.
- control unit 10 determines in S13 of FIG. 5 that the vehicle speed V is faster than the predetermined specified speed (NO in S13), the control unit 10 executes “normal control” in S18.
- the starting engine torque Tes1 is calculated based on the clutch transmission torque Tc, the engine speed Ne increases rapidly even though the driver does not step on the accelerator. This prevents the driver from feeling uncomfortable. Further, it is possible to prevent the deterioration of the fuel consumption of the vehicle due to the rapid increase in the engine rotation speed Ne.
- the engine speed increase required torque Ten is the inertia torque of the engine 2 necessary for raising the current engine speed to the target engine speed, and the engine inertia Ie and the engine speed change Calculated from ⁇ e.
- the engine rotational speed increase necessary torque Ten is calculated by referring to the “engine rotational speed increase necessary torque calculation data” shown in FIG. 13 for the difference rotational speed between the target engine rotational speed Net and the current engine rotational speed Ne. In any case, there is no problem.
- the engine rotational speed increase required torque Ten is set to be larger. Further, when the differential rotational speed between the target engine rotational speed Net and the current engine rotational speed Ne is negative, that is, when the differential rotational speed of the current engine rotational speed Ne is higher than the target engine rotational speed Net, the engine rotational speed is The required increase torque Ten is zero. As in the above-described embodiment, the required engine speed increase torque Ten is calculated by linear interpolation based on “engine speed increase required torque calculation data”.
- the required engine torque Ter and the start are determined in accordance with the ratio of the differential rotation between the current engine speed and the first specified speed N1 or the second specified speed N2.
- the corrected start engine torque Tes2 is calculated by proportionally distributing the engine torque Tes1.
- the engine starts faster than the required engine torque Ter as the engine speed Ne becomes closer to the first specified speed N1 from the second specified speed N2.
- the modified start engine torque Tes2 is calculated such that the influence degree of the engine torque Tes1 becomes large.
- the operating force of the clutch pedal 53 is transmitted to the release bearing 37 via the master cylinder 55, the hydraulic pipe 58 and the slave cylinder 38.
- the operating force of the clutch pedal 53 is transmitted to the release bearing 37 via mechanical elements such as a wire, a rod, and a gear.
- the clutch stroke Cl detected by the clutch sensor 54 is referred to “clutch transmission torque mapping data” representing the relationship between the clutch stroke Cl and the clutch transmission torque Tc shown in FIG.
- the clutch transmission torque Tc is calculated.
- the clutch transmission torque Tc is predicted based on the amount of change per hour of the clutch stroke Cl and the required engine torque Ter is predicted. .
- the clutch transmission torque Tc is calculated based on the detection signal of the clutch sensor 54.
- the clutch transmission torque is determined based on information such as the engine inertia Ie, the engine friction torque Tef, the rotation speed of the transmission input shaft 41 at the start of engagement, the current rotation speed of the transmission input shaft 41, and the elapsed time from the start of engagement. There is no problem even if Tc is calculated.
- the clutch sensor 54 detects the stroke amount of the master cylinder 55.
- the clutch sensor 54 may be a sensor that detects the operation amount of the clutch pedal 53, the master pressure of the master cylinder 55, the stroke or fluid pressure of the slave cylinder 38, and the stroke amount of the release bearing 37.
- the control unit 10 calculates the vehicle speed V based on the transmission output shaft rotational speed No detected by the transmission output shaft rotational speed sensor 46.
- the control unit 10 calculates the vehicle speed V based on the wheel rotation speed detected by the wheel speed sensor that detects the rotation speed of the wheel and the sensor that detects the rotation speed of the shaft that rotates in conjunction with the wheel.
- the embodiment may be used.
- the oil temperature of the oil that lubricates the engine 2 is detected by the oil temperature sensor 25.
- the oil temperature of the oil is estimated based on a detection signal from a water temperature sensor that detects the temperature of the cooling water circulating in the engine 2.
- the clutch operating member that transmits the operating force of the driver to the clutch 3 is the clutch pedal 53.
- the clutch operating member is not limited to the clutch pedal 53, and may be a clutch lever, for example.
- an accelerator grip for adjusting the accelerator opening degree Ac may be used instead of the accelerator pedal 51 for adjusting the accelerator opening degree Ac. It goes without saying that the technical idea of the present invention can be applied even if the vehicle drive device of the present embodiment is applied to a motorcycle or other vehicles.
- the single control unit 10 controls the engine 2 and executes “clutch / engine cooperative control” shown in FIG.
- the engine control unit controls the engine 2 and the control unit 10 connected to the engine control unit by a communication means such as CAN (Controller Area Network) executes “clutch / engine cooperative control”. There is no problem.
- the vehicle has the manual transmission 4.
- the technical idea of the present invention can also be applied to a vehicle that does not have the manual transmission 4 but has an input shaft that rotates in conjunction with the drive wheels 18R and 18L and is connected to the clutch disk 32.
- the present invention is applied when the vehicle starts.
- the driver performs an operation of sliding the clutch appropriately using a half-clutch to prevent an excessive decrease in engine speed.
- the technical idea of the present invention is applicable.
- Clutch sensor (Clutch transmission torque acquisition means, clutch operation amount detection means), 56... Brake pedal (brake operation means), 57.
- Rekisensa (brake operation amount detecting means) t ... oil temperature V ... vehicle speed A ... specified differential rotational speed N1 ... first specified rotational speed N2 ... second specified rotational speed ⁇ c ... clutch differential rotational speed Te ... engine torque Ter ... requested engine torque Tes1 ... starting engine torque (torque up) During control) Tes2 ...
- Tc Clutch transmission torque
- Ten Torque required for engine speed increase
- Tk Maintenance torque
- Ie Engine inertia
- Net Target engine speed
- Tef Engine friction torque
- Ta Auxiliary torque
- T ⁇ Adjustment torque
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- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
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- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
図1に基づき、本発明の実施形態による車両用駆動装置1について説明する。図1は、エンジン2を備えた車両の車両用駆動装置1の全体の構成を示す構成図である。図1において、太線は各装置間の機械的な接続を示し、破線による矢印は制御用の信号線を示している。
以下に、図3及び図4を用いて、本実施形態の概要について説明する。車両の発進時において、車速Vが所定以下であり、ブレーキペダル56が踏まれておらず、クラッチ差回転速度Δcが所定以上である場合、つまり、車両が発進状態であり、クラッチ3が半クラッチ状態である場合、つまり、エンジン2が停止するエンジンストールが発生する可能性がある場合に、「トルクアップ制御」を実行する。
以下に、図5のフローチャートを用いて、「クラッチ・エンジン協調制御」について説明する。車両のイグニッションキーがNOとされ、エンジン2が始動すると、「クラッチ・エンジン協調制御」が開始し、プログラムはS11に進む。
以下に、図7のフローチャートを用いて、「トルクアップ制御」について説明する。「トルクアップ制御」が開始すると、プログラムは、S16-1に進む。
S21において、制御部10は、目標エンジン回転速度Netを算出する。目標エンジン回転速度Netとは、エンジン回転速度Neの制御目標である。具体的には、制御部10は、アクセルセンサ52によって検出されたアクセル開度Acを、図9に示すアクセル開度Acと目標エンジン回転速度Netとの関係を表した「目標エンジン回転速度設定データ」に参照させることにより演算する。
Ten=Ie×ωe…(1)
Ten…エンジン回転速度上昇必要トルクTen
Ie…エンジンイナーシャ
ωe…エンジン回転速度変化
S31において、制御部10は、現在の油温t及び現在のエンジン回転速度Neに基づいて、エンジンフリクショントルクTefを演算する。S31が終了すると、プログラムはS32に進む。
Tk=Tef+Ta+Tα…(2)
Tk…維持トルク
Tef…エンジンフリクショントルク
Ta…補機トルク
Tα…調整トルク
S34が終了すると、図7のS16-3が終了し、プログラムは、S16-4に進む。
Tes1=Tc+Ten+Tk…(3)
Tes1=発進エンジントルク
Tc=クラッチ伝達トルク
Ten=エンジン回転速度上昇必要トルク
Tk=維持トルク
S16-4が終了すると、プログラムは、S16-5に進む。
以下に、図12に示すフローチャートを用いて、「制限トルクアップ制御」について説明する。「制限トルクアップ制御」が開始するとプログラムは、S17-1に進む。
Δa=Ne-N1…(4)
Δa:第一回転速度差
Ne:現在のエンジン回転速度
N1:第一規定回転速度
Δb=N2-Ne…(5)
Δb:第二回転速度差
N2:第二規定回転速度
Ne:現在のエンジン回転速度
Tes2=(Tes1×Δb+Ter×Δa)/(Δa+Δb)…(6)
Tes2:修正発進エンジントルク
Tes1:発進エンジントルク
Ter:要求エンジントルク
Δa:第一回転速度差
Δb:第二回転速度差
S17-2が終了すると、プログラムは、S17-3に進む。
以下に、図2、図5、図13を用いて、車両発進時における「クラッチ・エンジン協調制御」の説明をする。
この状態では、ブレーキペダル56が踏まれているので、図5のS11において、NOと判断され、エンジン2の制御は、運転者のアクセル操作に依存する。この状態では、アクセルペダル51が踏まれていないので、エンジン回転速度Neはアイドリング回転速度(例えば700r.p.m.)となっている。
この状態では、クラッチ3が完全断であるので、図5のS12において、NOと判断され、エンジン2の制御は、運転者のアクセル操作に依存する。アクセルペダル51が踏まれているので、アクセル開度Acに応じたエンジン回転速度Ne及びエンジントルクTeとなる。
この状態では、クラッチ3が半クラッチ状態であるので、図5のS12において、YESと判断され、次いで、クラッチ差回転速度Δcが規定差回転速度A(例えば500r.p.m.)以上であるので、S14の判断において、YESと判断される。そして、エンジン回転速度Neが、第一規定回転速度N1(例えば1100r.p.m.)未満であるので、S14の判断においてS16に進み、「トルクアップ制御」が開始される。そして、「トルクアップ制御」において、発進エンジントルクTes1が要求エンジントルクTerより大きいと判断された場合には(図7のS16-5:YES)、発進エンジントルクTes1となるようにエンジン2が制御される。
この状態では、エンジン回転速度Neが第一規定回転速度N1(例えば1100r.p.m.)を超えているので、図5のS14の判断において、S17に進み、「制限トルクアップ制御」が開始される。そして、「制限トルクアップ制御」において、修正発進エンジントルクTes2が要求エンジントルクTerより大きいと判断された場合には(図12のS17-3:YES)、修正発進エンジントルクTes2となるようにエンジン2が制御される。
この状態では、エンジン回転速度Neが第二規定回転速度N2(例えば1400r.p.m.)を超えているので、図5のS14の判断において、S18に進み、「制限トルクアップ制御」が終了されて、「通常エンジン制御」となる。従って、アクセル開度Acに基づき演算された要求エンジントルクTerとなるように、エンジン2が制御される。
その後、クラッチ差回転速度Δcが減少し、最終的にはクラッチ3が同期してクラッチ差回転速度Δcが0となる。そして、運転者がクラッチペダル53を離すと、クラッチ3が完全係合状態となる(T7)。
上述した説明から明らかなように、制御部10(発進エンジントルク演算手段)は、図7のS16-4において、クラッチ伝達トルクTcに基づいて、発進エンジントルクTes1を演算する。そして、制御部10(エンジン制御手段)は、クラッチ差回転速度Δcが規定差回転速度A以上である半クラッチ状態であると判断した場合に(図5のS14でYESの判定)、図7のS16-6において、エンジントルクTeが発進エンジントルクTes1となるようにエンジン2を制御する。
以下に、以上説明した実施形態と異なる実施形態について説明する。
以上説明した実施形態では、エンジン回転速度上昇必要トルクTenは、現在のエンジン回転速度から目標とするエンジン回転速度に引き上げるのに必要なエンジン2のイナーシャトルクであり、エンジンイナーシャIe及びエンジン回転速度変化ωeから演算される。しかし、目標エンジン回転速度Netと現在のエンジン回転速度Neの差回転速度を、図13に示す「エンジン回転速度上昇必要トルク演算データ」に参照させることにより、エンジン回転速度上昇必要トルクTenを演算することにしても差し支え無い。
t…油温
V…車速
A…規定差回転速度
N1…第一規定回転速度
N2…第二規定回転速度
Δc…クラッチ差回転速度
Te…エンジントルク
Ter…要求エンジントルク
Tes1…発進エンジントルク(トルクアップ制御時)
Tes2…修正発進エンジントルク(制限トルクアップ制御時)
Tc…クラッチ伝達トルク
Ten…エンジン回転速度上昇必要トルク
Tk…維持トルク
Ie…エンジンイナーシャ
Net…目標エンジン回転速度
ωe…エンジン回転速度変化
Tef…エンジンフリクショントルク
Ta…補機トルク
Tα…調整トルク
Claims (10)
- 出力軸にエンジントルクを出力するエンジンと、
前記エンジンが出力するエンジントルクを可変に操作するためのエンジン操作手段と、
車両の駆動輪の回転と連動して回転する入力軸と、
前記出力軸と前記入力軸との間に設けられ、前記出力軸と前記入力軸間におけるクラッチ伝達トルクを可変とするクラッチと、
前記クラッチ伝達トルクを可変に操作するためのクラッチ操作手段と、
前記クラッチが発生している前記クラッチ伝達トルクを取得するクラッチ伝達トルク取得手段と、
前記エンジン操作手段の操作量に基づいて、前記エンジンの要求トルクである要求エンジントルクを演算する要求エンジントルク演算手段と、
前記伝達トルク取得手段が取得した前記クラッチ伝達トルクに基づいて、発進エンジントルクを演算する発進エンジントルク演算手段と、
前記出力軸と前記入力軸との差回転速度であるクラッチ差回転速度が所定の規定差回転速度以上であり、且つ、エンジン回転速度が第一規定回転速度未満である場合には、前記発進エンジントルクとなるように前記エンジンを制御してトルクアップ制御を実行し、前記クラッチ差回転速度が前記規定差回転速度未満である場合には、前記要求エンジントルクとなるように前記エンジンを制御して通常制御を実行するエンジン制御手段と、を有する車両用駆動装置。 - エンジン回転速度を上昇させるのに必要なトルクであるエンジン回転速度上昇必要トルクを演算するエンジン回転速度上昇必要トルク演算手段を有し、
前記発進エンジントルク演算手段は、エンジン回転速度上昇必要トルクに基づいて、前記発進エンジントルクを演算する請求項1に記載の車両用駆動装置。 - 前記エンジンに作用する負荷を取得する負荷取得手段と、
前記負荷に基づき、前記クラッチ伝達トルク及び前記エンジン回転速度上昇必要トルク以外に、エンジン回転速度を維持するのに必要なトルクである維持トルクを演算する維持トルク演算手段を有し、
前記発進エンジントルク演算手段は、前記維持トルクに基づいて、前記発進エンジントルクを演算する請求項1又は請求項2に記載の車両用駆動装置。 - 前記エンジン制御手段は、前記要求エンジントルクが前記発進エンジントルクより大きい場合には、前記要求エンジントルクとなるように前記エンジンを制御する請求項1~請求項3のいずれか一項に記載の車両用駆動装置。
- エンジン回転速度が前記第一規定回転速度以上であり前記第一規定回転速度より速い第二規定回転速度未満である場合に、前記発進エンジントルク及び前記要求エンジントルクに基づき、エンジン回転速度が前記第一規定回転速度から前記第二規定回転速度に近くなる程、前記発進エンジントルクよりも前記要求エンジントルクの影響度が大きくなるような修正発進エンジントルクを演算する修正発進エンジントルク演算手段を有し、
前記エンジン制御手段は、
エンジン回転速度が第一規定回転速度以上であり前記第二規定回転速度未満である場合に、修正発進エンジントルクとなるように前記エンジンを制御して制限トルクアップ制御を実行し、
エンジン回転速度が前記第二規定回転速度以上である場合には、前記通常制御を実行する請求項1~請求項4のいずれか一項に記載の車両用駆動装置。 - 前記車両に制動力を付与する制動力付与手段と、
前記制動力付与手段の制動力を可変に操作するための制動力操作手段と、を有し、
前記エンジン制御手段は、前記制動力操作手段が操作されている場合には、通常制御を実行する請求項1~請求項5のいずれか一項に記載の車両用駆動装置。 - 前記クラッチ伝達トルク取得手段は、前記クラッチ操作手段の操作量を検出するクラッチ操作量検出手段である請求項1~請求項6のいずれか一項に記載の車両用駆動装置。
- 前記第二規定回転速度は、前記エンジン操作手段の操作量が大きくなる程速く設定される請求項5~請求項7のいずれか一項に記載の車両用駆動装置。
- 前記エンジン回転速度上昇必要トルクは、前記エンジン操作手段の操作量に基づいて設定される請求項2~請求項8のいずれか一項に記載の車両用駆動装置。
- 前記車両の車速を検出する車速検出手段を有し、
前記エンジン制御手段は、前記車速検出手段で検出された車速が所定の規定速度より速い場合には、前記通常制御を実行する請求項1~請求項9のいずれか一項に記載の車両用駆動装置。
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EP13848583.4A EP2913503A4 (en) | 2012-10-25 | 2013-09-24 | DRIVE DEVICE FOR A VEHICLE |
CN201380054696.XA CN104755731B (zh) | 2012-10-25 | 2013-09-24 | 车辆用驱动装置 |
BR112015008449A BR112015008449A2 (pt) | 2012-10-25 | 2013-09-24 | aparelho de acionamento veicular |
IN3778DEN2015 IN2015DN03778A (ja) | 2012-10-25 | 2015-05-04 |
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JP (1) | JP5849928B2 (ja) |
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US20190136817A1 (en) * | 2017-11-09 | 2019-05-09 | Zf Friedrichshafen Ag | Method for assisting the starting of a motor-driven vehicle |
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JP2016138488A (ja) * | 2015-01-27 | 2016-08-04 | アイシン精機株式会社 | 車両用駆動装置 |
KR20170033177A (ko) * | 2015-09-16 | 2017-03-24 | 현대자동차주식회사 | 차량용 주행 제어방법 |
JP7142421B2 (ja) * | 2017-07-28 | 2022-09-27 | ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | モーターサイクルに用いられる制御装置、及び、モーターサイクルのエンジンの回転数の制御方法 |
CN108749810A (zh) * | 2018-05-31 | 2018-11-06 | 重庆长安汽车股份有限公司 | 一种手动挡汽车起步的扭矩控制方法 |
CN114439938B (zh) * | 2022-01-26 | 2023-04-07 | 重庆长安汽车股份有限公司 | 一种手动挡车辆起步过程中的发动机控制方法、装置及汽车 |
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CN104755731B (zh) | 2017-08-04 |
CN104755731A (zh) | 2015-07-01 |
JP2014084813A (ja) | 2014-05-12 |
BR112015008449A2 (pt) | 2017-07-04 |
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