WO2013051627A1 - 車両の制御装置、車両及び原動機 - Google Patents
車両の制御装置、車両及び原動機 Download PDFInfo
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- WO2013051627A1 WO2013051627A1 PCT/JP2012/075710 JP2012075710W WO2013051627A1 WO 2013051627 A1 WO2013051627 A1 WO 2013051627A1 JP 2012075710 W JP2012075710 W JP 2012075710W WO 2013051627 A1 WO2013051627 A1 WO 2013051627A1
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- engine
- torque
- clutch
- target value
- control device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
- B60W10/113—Stepped gearings with two input flow paths, e.g. double clutch transmission selection of one of the torque flow paths by the corresponding input clutch
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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
- F02D41/023—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission in relation with the gear ratio shifting
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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
- F02D41/30—Controlling fuel injection
- F02D41/3011—Controlling fuel injection according to or using specific or several modes of combustion
- F02D41/3064—Controlling fuel injection according to or using specific or several modes of combustion with special control during transition between modes
- F02D41/307—Controlling fuel injection according to or using specific or several modes of combustion with special control during transition between modes to avoid torque shocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/68—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
- F16H61/684—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/68—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
- F16H61/684—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive
- F16H61/688—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive with two inputs, e.g. selection of one of two torque-flow paths by clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
- F16H63/502—Signals to an engine or motor for smoothing gear shifts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/10—Change speed gearings
- B60W2710/105—Output torque
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/53—Engine over-speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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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
- F02D2250/21—Control of the engine output torque during a transition between engine operation modes or states
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
- F16H2063/506—Signals to an engine or motor for engine torque resume after shift transition, e.g. a resume adapted to the driving style
Definitions
- the present invention relates to a vehicle control device, a vehicle, and a prime mover, and more particularly, to shift control in a twin clutch type vehicle.
- twin clutch type vehicle is known (see Patent Document 1).
- the twin clutch type vehicle is arranged downstream of the engine, two clutches to which engine output torque is individually inputted, and two dog clutch type transmissions arranged downstream of each clutch and having a common output shaft. And a mechanism.
- the engine speed is changed by providing a difference between the switching control for switching the output torque transmission path from the one clutch and transmission mechanism to the other clutch and transmission mechanism, and the engine output torque and the clutch torque capacity. And rotation control for changing.
- overrev control is usually performed in which the engine speed is suppressed by fuel cut or the like when the engine is over-rotated.
- the target value of the output torque is limited to a negative value, and the engine brake is applied.
- the negative output torque means that the output torque output from the engine to the transmission path is smaller than the load torque input from the transmission path to the engine.
- the present invention has been made in view of the above circumstances, and provides a vehicle control device, a vehicle, and a prime mover capable of suppressing a shift shock and efficiently using an output torque of an engine. Main purpose.
- a vehicle control apparatus includes an engine, two clutches arranged downstream of the engine, and each of which receives an output torque output from the engine, and each of the clutches.
- an engine two clutches arranged downstream of the engine, and each of which receives an output torque output from the engine, and each of the clutches.
- the control device provides a difference between the switching control for switching the transmission path of the output torque from one clutch and transmission mechanism to the other clutch and transmission mechanism and the output torque and the torque capacity during the shift period.
- a rotation control for changing the rotation speed of the engine.
- the control device includes a target value determination unit that determines a target value of the output torque, and the output torque that is greater than a load torque that is input to the engine from the transmission path when the rotational speed of the engine exceeds a threshold value.
- a target value limiting unit that limits the target value so as to be smaller; and a limit release unit that releases the limitation of the target value before the rotation control in the shift period is started.
- the vehicle control apparatus includes an engine, two clutches arranged downstream of the engine, to which output torque output from the engine is individually input, and a torque capacity of each of the clutches is changed. And two dog clutch type transmission mechanisms that are arranged downstream of the respective clutches and have a common output shaft.
- the control device provides a difference between the switching control for switching the transmission path of the output torque from one clutch and transmission mechanism to the other clutch and transmission mechanism and the output torque and the torque capacity during the shift period. And a rotation control for changing the rotation speed of the engine.
- the control device includes a target value determination unit that determines a target value of the output torque, and the output torque that is greater than a load torque that is input to the engine from the transmission path when the rotational speed of the engine exceeds a threshold value.
- a target value limiting unit that limits the target value so as to decrease, and the output torque becomes larger than the load torque before the engine speed falls below the threshold during the shift period.
- a target value changing unit for changing the target value.
- the vehicle of the present invention includes the control device. Moreover, the motor
- the present invention since the output torque becomes larger than the load torque before the engine speed falls below the threshold during the shift period, it is possible to suppress the shift shock and efficiently use the engine output torque. It is.
- FIG. 1 is a side view of a motorcycle including a control device according to an embodiment of the present invention. It is the schematic of the mechanism provided in the torque transmission path
- FIG. 1 is a side view of a motorcycle 1 including a control device 10 according to an embodiment of the present invention.
- FIG. 2 is a schematic view of a mechanism provided in a torque transmission path from the engine 20 to the rear wheel 3.
- FIG. 3 is a block diagram showing a configuration of the motorcycle 1 which is an embodiment of the vehicle of the present invention.
- the motorcycle 1 includes an engine unit 11 that is an embodiment of the prime mover of the present invention.
- the front wheel 2 disposed in front of the engine unit 11 is supported by the lower end of the front fork 4.
- a steering shaft 5 that is rotatably supported at the foremost part of a vehicle body frame (not shown) is connected to the upper portion of the front fork 4.
- a steering 6 is provided above the steering shaft 5.
- the steering 6, the front fork 4 and the front wheel 2 are integrally rotatable left and right around the steering shaft 5.
- a seat 7 on which the passenger can sit across is disposed behind the steering wheel 6.
- a rear wheel 3 is disposed behind the engine unit 11. Torque output from the transmission 30 (see FIG. 2) is transmitted to the rear wheel 3 via a torque transmission member (not shown) such as a chain, belt, or drive shaft.
- the engine unit 11 includes an engine 20 and a transmission 30.
- the motorcycle 1 is a so-called twin clutch type vehicle, and a first clutch 40A and a second clutch 40B are provided in the engine unit 11.
- the engine 20 includes a crankshaft 21 that rotates when driven.
- the torque of the engine 20 (rotation of the crankshaft 21) is input to each of the first clutch 40A and the second clutch 40B.
- the first clutch 40 ⁇ / b> A and the second clutch 40 ⁇ / b> B have a drive member 41 that is interlocked with the rotation of the crankshaft 21.
- the crankshaft 21 has two primary gears 21a.
- a primary gear 41a is provided on the drive member 41 of the first clutch 40A and the drive member 41 of the second clutch 40B.
- the primary gear 41a meshes with the primary gear 21a.
- the first clutch 40A and the second clutch 40B have a driven member 42 that interlocks with an input shaft 31 of transmission mechanisms 30A and 30B described later.
- the first clutch 40A and the second clutch 40B are, for example, single-plate or multi-plate friction clutches.
- the drive member 41 and the driven member 42 are pressed against each other in the axial direction, torque is transmitted between them.
- the drive member 41 is, for example, a friction disk
- the driven member 42 is, for example, a clutch disk.
- the transmission 30 includes a first transmission mechanism 30A and a second transmission mechanism 30B.
- the first transmission mechanism 30A and the second transmission mechanism 30B are disposed downstream of the first clutch 40A and the second clutch 40B, respectively. That is, the input shaft 31 is provided in each of the first transmission mechanism 30A and the second transmission mechanism 30B.
- the input shaft 31 of the first transmission mechanism 30A is connected to the driven member 42 of the first clutch 40A, and torque is input to the first transmission mechanism 30A via the first clutch 40A.
- the input shaft 31 of the second transmission mechanism 30B is connected to the driven member 42 of the second clutch 40B, and torque is input to the second transmission mechanism 30B via the second clutch 40B.
- the first transmission mechanisms 30 ⁇ / b> A and 30 ⁇ / b> B have a common output shaft 32.
- the motorcycle 1 has two paths as torque transmission paths from the crankshaft 21 of the engine 20 to the output shaft 32 of the transmission 30.
- the first path is configured by the first transmission mechanism 30A and the first clutch 40A
- the second path is configured by the second transmission mechanism 30B and the second clutch 40B.
- the output shaft 32 of the transmission 30 is connected to the axle of the rear wheel 3 via a torque transmission member composed of a chain, a belt, a shaft and the like.
- the first transmission mechanism 30A and the second transmission mechanism 30B include a plurality of gears 1i to 6i and 1h to 6h.
- the gears 1 i to 6 i are provided on the input shaft 31, and the gears 1 h to 6 h are provided on the output shaft 32.
- the gear 1i and the gear 1h mesh with each other, and the reduction ratio thereof corresponds to the first speed.
- the gears 2i to 6i mesh with the gears 2h to 6h, respectively, and their reduction ratios correspond to the 2nd to 6th speeds, respectively.
- the first transmission mechanism 30A is configured by gears 1i, 3i, 5i, 1h, 3h, and 5h corresponding to odd-numbered gears
- the second transmission mechanism 30B is gears 2i, 4i, and 6i corresponding to even-numbered gears. , 2h, 4h, 6h.
- the transmission mechanisms 30A and 30B are so-called selective sliding transmission mechanisms. Any one of the gear pairs (for example, the gear 1i and the gear 1h) corresponding to each gear is rotatable relative to the shaft on which the one gear is provided. On the other hand, the other gear meshes with a shaft provided with the other gear by a spline, and rotates integrally with the shaft. In this example, the gears 1h, 5i, 3h, 4h, 6i, 2h are rotatable relative to the shaft on which these gears are provided. On the other hand, the gears 1i, 5h, 3i, 4i, 6h, 2i mesh with the shafts on which they are provided, and rotate integrally with the shafts.
- the gear pairs (5i, 5h) and (6i, 6h) are interlocked with the output shaft 32, and the gear pairs (1i, 1h), ( 3i, 3h), (4i, 4h) and (2i, 2h) are linked to the input shaft 31.
- the gears interlocking with the input shaft 31 and the gears interlocking with the output shaft 32 are arranged so as to be adjacent to each other in the axial direction, and can be relatively moved in the axial direction (movable in the approaching direction and the away direction). ing.
- the plurality of gears 1i to 6i and 1h to 6h include a gear in which a dog clutch is formed.
- the gear interlocked with the input shaft 31 and the gear interlocked with the output shaft 32 can be engaged by a dog clutch.
- the rotation (torque) of the input shaft 31 of the first transmission mechanism 30A or the input shaft 31 of the second transmission mechanism 30B is transmitted to the output shaft 32 by the engagement of these two gears.
- the gears 5h, 3i, 4i, and 6h are movable in the axial direction.
- the transmission 30 is provided with a shift actuator 39 for moving axially movable gears 5h, 3i, 4i, 6h (hereinafter, movable gears) in the axial direction.
- the shift actuator 39 includes a plurality of shift forks 39a that are caught by a movable gear, a shift cam 39b that moves the shift fork 39a in the axial direction by rotating, an electric motor 39c that generates power to rotate the shift cam 39b, and the like.
- the shift actuator 39 moves the movable gear under the control of the control device 10 to switch the gear position.
- the clutches 40A and 40B are provided with clutch actuators 49A and 49B which are moved under the control of the control device 10 (that is, the clutches 40A and 40B are engaged or disengaged).
- the clutch actuators 49A and 49B include, for example, an electric motor. The power of the electric motor is transmitted to the pressure plate 43 via hydraulic pressure or a rod, and presses the drive member 41 and the driven member 42 in the axial direction.
- the engine 20 is provided with a fuel injection device 22, a throttle actuator 23, and a spark plug 24.
- the fuel injection device 22 supplies the engine 20 with fuel to be burned in the combustion chamber of the engine 20.
- the throttle actuator 23 controls the opening of a throttle valve (not shown) that adjusts the amount of air flowing through the intake passage of the engine 20.
- the spark plug 24 ignites the air / fuel mixture flowing into the combustion chamber of the engine 20.
- the fuel injection amount of the fuel injection device 22, the ignition timing of the spark plug 24, and the opening of the throttle valve (hereinafter referred to as throttle opening) are controlled by the control device 10.
- the motorcycle 1 includes an engine rotation speed sensor 19a, a gear position sensor 19b, clutch sensors 19c and 19d, an output side rotation sensor 19e, a shift switch 19f, and an accelerator sensor 19g. These sensors are connected to the control device 10.
- the engine rotation speed sensor 19a is constituted by a rotation sensor that outputs a pulse signal having a frequency corresponding to the engine rotation speed.
- the control device 10 calculates the engine rotation speed (the rotation speed of the crankshaft 21) based on the output signal of the engine rotation speed sensor 19a.
- the gear position sensor 19b is constituted by, for example, a potentiometer that outputs a voltage signal corresponding to the rotation angle of the shift cam 39b.
- the control device 10 detects the position of the movable gears 5h, 3i, 4i, 6h, the current gear position, and the like based on the output signal of the gear position sensor 19b.
- the output side rotation sensor 19e is provided on the axle of the rear wheel 3 or the output shaft 32.
- the output side rotation sensor 19e is a rotation sensor that outputs a pulse signal having a frequency corresponding to the rotation speed of the rear wheel 3 or the rotation speed of the output shaft 32, for example.
- the control device 10 calculates the vehicle speed and the rotation speed of the output shaft 32 based on the output signal of the output side rotation sensor 19e.
- the shift switch 19f is a switch operated by the occupant, and inputs the occupant's shift command (a signal indicating a shift-up command for increasing the shift speed and a signal indicating a shift-down command for decreasing the shift speed) to the control device 10. To do.
- the shift switch 19f is provided with a shift up switch and a shift down switch.
- the accelerator sensor 19g outputs a signal corresponding to an operation amount (rotation angle) of an accelerator grip (not shown) provided on the steering 6.
- the accelerator sensor 19g is constituted by, for example, a potentiometer.
- the control device 10 detects the operation amount of the accelerator grip (accelerator operation amount) based on the output signal of the accelerator sensor 19g.
- the clutch sensor 19c is a sensor for detecting the transmission torque capacity of the first clutch 40A (the maximum torque that can be transmitted in the current state of the first clutch 40A (current degree of engagement)).
- the clutch sensor 19d is a sensor for detecting the transmission torque capacity of the second clutch 40B (the maximum torque that can be transmitted in the current state of the second clutch 40B (the current degree of engagement)).
- the transmission torque capacity is maximum, and when the clutches 40A and 40B are in the released state, the transmission torque capacity is minimum (for example, 0 Nm).
- the clutch sensors 19c and 19d detect the amount of displacement of the pressure plate 43, for example.
- the transmission torque capacity corresponds to the positions of the clutches 40A and 40B (clutch stroke amount).
- the clutch sensors 19c and 19d are, for example, potentiometers that output signals corresponding to the positions of the clutches 40A and 40B (signals corresponding to the operation amounts of the clutch actuators 49A and 49B).
- the control device 10 detects the transmission torque capacity from the clutch position detected based on the output signals of the clutch sensors 19c and 19d. For example, the control device 10 calculates the transmission torque capacity from the detected clutch position using a map or an arithmetic expression that associates the clutch position with the transmission torque capacity.
- the transmission torque capacity corresponds to the hydraulic pressure (hereinafter referred to as clutch pressure) acting on the clutches 40A and 40B.
- the clutch sensors 19c and 19d may be hydraulic pressure sensors that output a signal corresponding to the clutch pressure.
- the control device 10 detects the transmission torque capacity from the clutch pressure detected based on the output signals of the clutch sensors 19c and 19d. For example, the control device 10 calculates the transmission torque capacity from the detected clutch pressure using a map or an arithmetic expression that associates the clutch pressure with the transmission torque capacity.
- the transmission torque capacity corresponds to the force (pressing force acting between the drive member 41 and the driven member 42) acting on the clutches 40A and 40B from the clutch actuators 49A and 49B. Due to the force acting on the clutches 40A, 40B from the clutch actuators 49A, 49B, the portions receiving the forces (for example, the cases of the clutches 40A, 40B) are distorted. Therefore, the clutch sensors 19c and 19d may be strain sensors that output a signal corresponding to the magnitude of strain at the portion receiving the force from the clutches 40A and 40B. In that case, the control device 10 detects the transmission torque capacity from the distortion detected based on the output signals of the clutch sensors 19c and 19d. For example, the control device 10 calculates the transmission torque capacity from the detected distortion by using a map or an arithmetic expression that associates the distortion of the clutch with the transmission torque capacity.
- the control device 10 includes a CPU (Central Processing Unit) and a memory such as a ROM (Read Only Memory) and a RAM (Random Access Memory).
- the control device 10 executes a program stored in the memory in the CPU, and controls the engine 20, the transmission 30, and the clutches 40A and 40B.
- the control device 10 sets a target value (hereinafter referred to as a target engine torque) for the output torque of the engine 20, and the throttle actuator 23 and the fuel injection so that the actual output torque becomes the target engine torque.
- the device 22 and the spark plug 24 are driven.
- the control device 10 sets a target value (hereinafter referred to as a target torque capacity) for the transmission torque capacity of the first clutch 40A and the transmission torque capacity of the second clutch 40B, and the actual transmission torque capacity is the target torque capacity.
- the clutch actuators 49A and 49B are moved so that Furthermore, the control device 10 moves the shift actuator 39 so that the gear position set by the first transmission mechanism 30A and the second transmission mechanism 30B corresponds to the shift command.
- the clutch that transmits the torque of the engine 20 before shifting is referred to as the front clutch, and the other clutch (that is, the transmission of the torque of the engine 20). Is the next clutch.
- the speed change mechanism that transmits the torque of the engine 20 before the speed change is used as the front speed change mechanism, and the other speed change mechanism (that is, the transmission of the torque of the engine 20). Is the next speed change mechanism.
- FIG. 4 is a diagram for explaining the outline of the shift control.
- the speed change mechanisms 30A and 30B and the clutches 40A and 40B shown in FIG. 2 are further simplified.
- the clutch Cp is the front clutch
- the clutch Cn is the next clutch.
- the transmission mechanism Tp is a front transmission mechanism
- the transmission mechanism Tn is a next transmission mechanism.
- the gear Gp1 of the front transmission mechanism Tp indicates a movable gear (5h, 3i, 4i, or 6h) that transmits torque at the previous gear, and the gear Gp2 transmits torque at the previous gear.
- the fixed gear (1h, 5i, 3h, 4h, 6i, or 2h) is shown.
- the gear Gn1 of the next transmission mechanism Tn indicates a movable gear that transmits torque at the next shift stage
- the gear Gn2 indicates a fixed gear that transmits torque at the next shift stage.
- one movable gear Gp1, Gn1 and one fixed gear Gp2, Gn2 are shown.
- the fixed gears Gp2 and Gn2 are fixed to the output shaft 32 (that is, meshed with the output shaft 32 by splines), and rotate integrally with the output shaft 32.
- the movable gears Gp1 and Gn1 can freely rotate relative to the output shaft 32.
- the movable gears Gp1 and Gn1 mesh with gears Gp3 and Gn3 fixed to the input shaft 31, respectively, and interlock with the rotation of the gears Gp3 and Gn3 and the input shaft 31.
- the two clutches Cp and Cn are set to the engaged state (the state where the transmission torque capacity is maximum).
- the movable gear Gp1 and the fixed gear Gp2 corresponding to the previous gear stage are engaged by a dog clutch.
- all the movable gears are arranged at neutral positions (positions that do not engage any fixed gear). Therefore, the torque of the engine 20 is transmitted toward the rear wheel 3 via one of the two torque transmission paths (the front clutch Cp and the front transmission mechanism Tp). In the other path, torque transmission is interrupted in the next transmission mechanism Tn.
- the control device 10 switches the path for transmitting torque from one to the other. That is, the control device 10 engages the movable gear Gn1 and the fixed gear Gn2 of the next transmission mechanism Tn to bring the movable gear Gp1 of the front transmission mechanism Tp to the neutral position. Specifically, the transmission mechanisms Tp, Tn and the clutches Cp, Cn are moved as follows in the shift control. First, the control device 10 releases the engagement of the next clutch Cn as shown in S1 of FIG. 4B, moves the movable gear Gn1 of the next transmission mechanism Tn as shown in S2, and the adjacent fixed gear. Engage with Gn2 (so-called dog engagement phase).
- control device 10 returns the next clutch Cn from the disengaged state to the engaged state as shown in S3 of FIG. 4C, and at the same time, disengages the previous clutch Cp (so-called torque phase). Finally, the control device 10 moves the movable gear Gp1 of the front transmission mechanism Tp to the neutral position as shown in S4 of FIG. 4D, and then engages the front clutch Cp (so-called dog release). Phase).
- Rotational control (so-called inertia phase) for matching the speed may be required before or after the torque phase (see S3 in FIG. 4C).
- a plurality of control modes of the shift control of the control device 10 described below are broadly divided into those in which the torque phase is performed before the inertia phase and those in which the inertia phase is performed before the torque phase.
- FIG. 5 is a diagram showing a plurality of control modes of the shift control of the control device 10.
- the control device 10 has four control modes as shift control.
- the first control mode is shift-up control (power-on shift-up control) with the accelerator open.
- the second control mode is shift-down control (power-on shift-down control) with the accelerator open.
- the third control mode is shift-up control (power-off shift-up control) with the accelerator closed.
- the fourth control mode is shift-down control (power-off shift-down control) with the accelerator closed.
- FIG. 6 is a time chart for explaining an example of the first control mode (power-on shift-up control).
- the upper solid line represents the target engine torque Te
- the broken line represents the target torque capacity Tcn of the next clutch Cn
- the two-dot chain line represents the target torque capacity Tcp of the previous clutch Cp
- the lower solid line represents the engine speed. Se is represented.
- the broken line and the two-dot chain line are values obtained by dividing the target torque capacity by the primary reduction ratio.
- each line is slightly shifted in the vertical or horizontal direction so as not to overlap each other.
- the torque phase and the inertia phase are executed in this order.
- the control device 10 starts the dog engagement phase (t1). Specifically, the control device 10 changes the next clutch Cn from the engaged state to the released state.
- the engaged state is a state where the transmission torque capacity is maximum
- the released state is a state where the transmission torque capacity is minimum (for example, 0 Nm).
- the control device 10 drives the shift actuator 39 to move the movable gear Gn1 of the next transmission mechanism Tn toward the fixed gear Gn2.
- the control device 10 changes the front clutch Cp from the engaged state to the half-engaged state.
- the target torque capacity Tcp of the front clutch Cp is lowered to a value corresponding to the engine torque Te.
- the control device 10 starts the torque phase and switches the path for transmitting the torque of the engine 20 (t2).
- the control device 10 changes the front clutch Cp from the half-engaged state to the released state, and changes the next clutch Cn from the released state to the half-engaged state. Specifically, the control device 10 increases the target torque capacity Tcp of the next clutch Cn to a value corresponding to the engine torque Te.
- the control device 10 starts an inertia phase and decreases the engine rotation speed Se (t3). Specifically, the control device 10 decreases the engine rotational speed Se by lowering the engine torque Te relative to the target torque capacity Tcn of the next clutch Cn. In other words, the control device 10 decreases the engine rotational speed Se by relatively increasing the target torque capacity Tcn of the next clutch Cn relative to the engine torque Te.
- control device 10 starts a dog release phase (t4). Specifically, the control device 10 drives the shift actuator 39 to move the movable gear Gp1 of the front transmission mechanism Tp toward the neutral position. Thereafter, the control device 10 returns the previous clutch Cp and the next clutch Cn to the engaged state (t5). Thereby, the shift control according to the first control mode ends.
- FIG. 7 is a flowchart showing an operation example of the first control mode.
- the control device 10 determines whether or not the shift control is in the first control mode (power-on shift-up control). When it is not the first control mode (S201: NO), the control device 10 ends the process.
- the control device 10 outputs a dog engagement command and executes the dog engagement phase (t1 in FIG. 6).
- the dog engagement command includes a command to change the next clutch Cn from the engaged state to the released state, and a command to move the movable gear Gn1 of the next transmission mechanism Tn toward the fixed gear Gn2.
- the dog engagement command includes a command to change the front clutch Cp from the engaged state to the half-engaged state.
- the target torque capacity of the front clutch Cp is set so that the value obtained by dividing this by the primary reduction ratio is the same as the target engine torque.
- the control device 10 determines whether or not the dog engagement phase is completed.
- the following method can be considered. For example, when the position of the shift cam 39b is within the range corresponding to the dog engagement based on the signal from the gear position sensor 19b, the completion of the dog engagement phase is determined.
- the completion of the dog engagement phase is determined.
- the difference between the value obtained by dividing the engine rotational speed by the primary reduction ratio and the input shaft rotational speed is within a range corresponding to dog engagement.
- the completion of the dog engagement phase may be determined.
- the control device 10 executes the torque phase (t2 in FIG. 6).
- a command to change the previous clutch Cp to the disengaged state and a command to change the next clutch Cn to the half-engaged state are output.
- the target torque capacity of the next clutch Cn is set so that when the target engine torque is larger than a certain value (for example, 0 Nm), the value obtained by dividing this by the primary reduction ratio is the same as the target engine torque. Is done.
- the target engine torque is smaller than a certain value (for example, 0 Nm)
- the certain value for example, 0 Nm
- the control device 10 determines whether or not the torque phase has been completed. Specifically, it is determined whether or not the transmission torque capacity of the clutches 40A and 40B has reached the target torque capacity based on signals from the clutch sensors 19c and 19d.
- the control device 10 calculates an inertia torque.
- the inertia torque is a target engine torque applied in the inertia phase (Te in FIG. 6).
- the inertia torque is obtained, for example, by the following formula: (current engine rotation speed ⁇ engine rotation speed after shifting) / inertia phase generation time ⁇ crank inertia around the crank.
- the inertia phase generation time is read from a table in which the inertia phase generation time is associated with the shift speed and the accelerator opening as shown in FIG.
- the crank rotation inertia is an inertia caused by a heavy object existing around the axis of the crankshaft 21 and can be obtained in advance at the design stage of the engine 20 or the like.
- the control device 10 executes the inertia phase to decrease the engine rotation speed Se (t3 in FIG. 6).
- the target engine torque is set to the inertia torque calculated in S206.
- the target transmission torque of the front clutch Cp is set to a minimum value (for example, 0 Nm).
- the target transmission torque of the next clutch Cn is set to a value obtained by multiplying the target engine torque determined from the accelerator opening by the primary reduction ratio and further adding the offset torque.
- the offset torque is a value for eliminating the situation in which the inertia phase does not proceed because the target transmission torque Tcn of the next clutch Cn is different from the actual transmission torque capacity. For example, the time elapsed since the start of S207. The value is determined according to the time.
- the control device 10 determines whether or not the inertia phase has been completed.
- the completion of the inertia phase is determined when the following formula is established:
- Completion of the inertia phase may be determined when the following equation is established. Further, for example, the completion of the inertia phase may be determined when one or both of the two expressions are satisfied.
- control device 10 returns the target engine torque to a normal value obtained from the accelerator opening.
- control device 10 outputs a dog release command and executes the dog release phase (t4 in FIG. 6).
- the dog release command includes a command to move the movable gear Gn1 of the front transmission mechanism Tp to the neutral position.
- the control device 10 determines whether or not the dog release phase is completed.
- the following method can be considered. For example, when the position of the shift cam 39b is within a range corresponding to dog release based on a signal from the gear position sensor 19b, the completion of the dog release phase is determined.
- the difference between the value obtained by dividing the engine rotational speed by the primary reduction ratio and the input shaft rotational speed is within a range corresponding to dog release. The completion of the dog release phase may be determined.
- control device 10 outputs a command to change the previous clutch Cp and the next clutch Cn to the engaged state.
- the shift control according to the first control mode power-on shift-up control
- FIG. 9 is a block diagram illustrating a functional configuration example of the control device 10.
- the control device 10 includes a shift control unit 51, an engine control unit 53, a target value determination unit 55, a target value restriction unit 57, and a restriction release unit (target value change unit) 59.
- Each unit included in the control device 10 is realized by the CPU of the control device 10 executing a program stored in the memory.
- the shift control unit 51 executes shift control and drives the clutch actuators 49A and 49B and the shift actuator 39 (see FIGS. 5 to 7).
- the shift control unit 51 calculates the target torque capacity of the clutches 40A and 40B and the inertia torque used in the inertia phase based on the target engine torque supplied from the target value determination unit 55. Further, the shift control unit 51 notifies the restriction release unit 59 of the start of the shift period and the start of each phase included in the shift period.
- the engine control unit 53 includes a fuel injection device 22, a throttle actuator 23, and a spark plug 24 provided in the engine 20 so that the actual output torque of the engine 20 approaches the target engine torque supplied from the target value determination unit 55. Drive. For example, when the output torque of the engine 20 is increased, the throttle opening adjusted by the throttle actuator 23 is increased. Further, when the output torque of the engine 20 is decreased, the throttle opening adjusted by the throttle actuator 23 is decreased, the amount of fuel injected by the fuel injection device 22 is decreased, or the ignition by the spark plug 24 is performed. Delay the timing.
- the target value determination unit 55 determines the target engine torque based mainly on the accelerator operation amount input from the accelerator sensor 19g, and supplies the target engine torque to the shift control unit 51 and the engine control unit 53. For example, the target value determination unit 55 determines the target engine torque by referring to a map that represents the relationship between the accelerator operation amount and the target engine torque stored in the memory. Further, the target value determination unit 55 sets the inertia torque supplied from the shift control unit 51 as the target engine torque in the inertia phase. Further, when notified by the target value limiting unit 57 that the target value determining unit 55 is in the overrev state, the target value determining unit 55 limits the target engine torque to a negative value.
- the target value limiting unit 57 determines whether or not the engine rotation speed input from the engine rotation speed sensor 19a exceeds a threshold value (that is, whether or not the engine is in the overrev state). By notifying the target value determining unit 55 to that effect, the target engine torque is limited to a negative value.
- the target value determination unit 55 that has received the notification that it is in the overrev state restricts the target engine torque to a negative value and causes the engine control unit 53 to apply the engine brake (so-called overlev control).
- the engine brake is a state in which the output torque output from the engine 20 to the torque transmission path is smaller than the load torque input to the engine 20 from the torque transmission path.
- the threshold value for determining whether or not it is in the over-rev state may change according to the throttle opening.
- the engine speed that is the threshold value decreases as the throttle opening increases.
- the restriction release unit 59 outputs a target engine torque restriction release command to the target value restriction unit 57 at a predetermined timing when the shift control unit 51 executes the shift control. Further, the restriction canceling unit 59 receives a notification from the shift control unit 51 of the start of the shift period and the start of each phase included in the shift period in order to determine the timing of outputting the cancel command.
- the target value limiting unit 57 that has received the cancel command ends the notification that the target value determining unit 55 is in the overrev state, and causes the target value determining unit 55 to cancel the target engine torque limitation.
- the restriction release unit 59 releases the restriction on the target engine torque by increasing a threshold value for restricting the target engine torque. That is, when the threshold value is increased so as to exceed the engine rotation speed, the engine rotation speed falls below the threshold value and the target engine torque is not limited.
- the target engine torque that has been restricted to a negative value is returned to a positive value.
- the target engine torque is set to a normal value obtained from the accelerator operation amount.
- the target engine torque is set to inertia torque.
- FIG. 11 is a time chart for explaining the first operation example. In the following, parts different from FIG. 6 will be mainly described.
- a one-dot chain line in FIG. 11 represents the engine torque Ta that is actually output.
- FIG. 11 shows a case where the engine speed Se exceeds the threshold value St at a time point t0 before the start time point t1 of the shift period.
- the present invention is not limited to this case.
- the target value determination unit 55 sets the target engine torque Te to a negative value, and sends the engine control unit 53 to the engine. Apply the brake. Thereafter, when the shift control unit 51 starts the shift control (t1), the restriction release unit 59 outputs a restriction release command for the target engine torque Te. Thus, the target engine torque Te returns to a normal value obtained from the accelerator operation amount with the start of the shift control.
- the target engine torque returns to the normal value before the inertia phase (that is, the rotation control). For this reason, it is possible to suppress the shift shock during the inertia phase and to efficiently use the output torque of the engine 20. Further, by not limiting the target engine torque during the shift period, it is possible to simplify the processing.
- FIG. 13 is a time chart for explaining the second operation example. In the following, portions different from the first example will be mainly described.
- the target value determination unit 55 sets the target engine torque Te to a negative value, and sends the engine control unit 53 to the engine. Apply the brake. Thereafter, when the shift control unit 51 starts the inertia phase (t3), the restriction release unit 59 outputs a restriction release command for the target engine torque Te. Thereby, the target engine torque Te is set to inertia torque with the start of the inertia phase.
- the engine speed exceeds the threshold value (S302: YES), and further, during the inertia phase (S305: YES).
- the restriction release unit 59 releases the restriction on the target engine torque by increasing the threshold (S303). Then, the shift control unit 51 executes shift control (S304).
- the target engine torque is set to the inertia torque. For this reason, it is possible to suppress the shift shock during the inertia phase and to efficiently use the output torque of the engine 20. Further, since the target engine torque is limited until the start of the inertia phase, it is easy to suppress an excessive increase in the engine speed.
- FIG. 15 is a time chart for explaining the third operation example. In the following, differences from the first example and the second example will be mainly described.
- the target value determination unit 55 sets the target engine torque Te to a negative value, and sends the engine control unit 53 to the engine. Apply the brake. Thereafter, when the shift control unit 51 starts the torque phase (t2), the restriction release unit 59 outputs a restriction release command for the target engine torque Te.
- the target engine torque Te returns to a normal value obtained from the accelerator operation amount with the start of the torque phase.
- the target engine torque when the torque phase starts, the limitation of the target engine torque is finished, and the target engine torque returns to the normal value before the inertia phase. For this reason, it is possible to suppress the shift shock during the inertia phase and to efficiently use the output torque of the engine 20. Further, by finishing the restriction of the target engine torque at the start of the torque phase, it is possible to secure a time for the actual engine torque Ta to return before the start of the inertia phase.
- the limit of the target engine torque is finished in accordance with any one of the start time t1 of the shift period, the start time t2 of the torque phase, and the start time t3 of the inertia phase. Absent.
- the restriction of the target engine torque may be ended during the dog engagement phase or the torque phase. Further, as shown in FIG. 17, even during the inertia phase, if the restriction of the target engine torque is finished before the engine speed falls below the threshold value, the shift shock can be suppressed more than in the prior art. Is possible.
Abstract
Description
図11は、第1の動作例を説明するためのタイムチャートである。以下、上記図6と異なる部分について主に説明する。図11中の一点鎖線は、実際に出力されるエンジントルクTaを表している。また、図11では、変速期間の開始時点t1よりも前の時点t0においてエンジン回転速度Seが閾値Stを超える場合を示しているが、この場合に限られない。
図13は、第2の動作例を説明するためのタイムチャートである。以下、上記第1例と異なる部分について主に説明する。
図15は、第3の動作例を説明するためのタイムチャートである。以下、上記第1例及び第2例と異なる部分について主に説明する。
Claims (6)
- エンジンと、前記エンジンの下流に配置され、前記エンジンから出力される出力トルクが個別に入力される2つのクラッチと、前記各々のクラッチのトルク容量を変化させる2つのアクチュエータと、前記各々のクラッチの下流に配置され、共通の出力軸を有するドグクラッチ式の2つの変速機構と、を備える車両に設けられ、
前記変速期間中に、前記出力トルクの伝達経路を一方のクラッチ及び変速機構から他方のクラッチ及び変速機構に切り替える切替制御と、前記出力トルクと前記トルク容量とに差を設けることで前記エンジンの回転速度を変化させる回転制御と、を実行する制御装置であって、
前記出力トルクの目標値を決定する目標値決定部と、
前記エンジンの回転速度が閾値を超える場合に、前記伝達経路から前記エンジンに入力される負荷トルクよりも前記出力トルクが小さくなるように、前記目標値を制限する目標値制限部と、
前記変速期間における前記回転制御が開始されるまでに、前記目標値の制限を解除する制限解除部と、
を備えることを特徴とする車両の制御装置。 - 前記変速期間において前記切替制御が前記回転制御よりも前に実行され、
前記制限解除部は、前記切替制御が開始されるまでに前記目標値の制限を解除する、
請求項1に記載の車両の制御装置。 - 前記制限解除部は、前記変速期間が開始されるまでに前記目標値の制限を解除する、
請求項1に記載の車両の制御装置。 - エンジンと、前記エンジンの下流に配置され、前記エンジンから出力される出力トルクが個別に入力される2つのクラッチと、前記各々のクラッチのトルク容量を変化させる2つのアクチュエータと、前記各々のクラッチの下流に配置され、共通の出力軸を有するドグクラッチ式の2つの変速機構と、を備える車両に設けられ、
前記変速期間中に、前記出力トルクの伝達経路を一方のクラッチ及び変速機構から他方のクラッチ及び変速機構に切り替える切替制御と、前記出力トルクと前記トルク容量とに差を設けることで前記エンジンの回転速度を変化させる回転制御と、を実行する制御装置であって、
前記出力トルクの目標値を決定する目標値決定部と、
前記エンジンの回転速度が閾値を超える場合に、前記伝達経路から前記エンジンに入力される負荷トルクよりも前記出力トルクが小さくなるように、前記目標値を制限する目標値制限部と、
前記変速期間において前記エンジンの回転速度が前記閾値を下回る前までに、前記負荷トルクよりも前記出力トルクが大きくなるように、前記目標値を変更する目標値変更部と、
を備えることを特徴とする車両の制御装置。 - 請求項1ないし4の何れかに記載の制御装置を備える車両。
- 請求項1ないし4の何れかに記載の制御装置を備える原動機。
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Also Published As
Publication number | Publication date |
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EP2765049B1 (en) | 2020-12-02 |
EP2765049A4 (en) | 2017-03-08 |
US9073551B2 (en) | 2015-07-07 |
US20140288791A1 (en) | 2014-09-25 |
EP2765049A1 (en) | 2014-08-13 |
JPWO2013051627A1 (ja) | 2015-03-30 |
JP5762551B2 (ja) | 2015-08-12 |
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