WO2021166886A1 - Dispositif de détermination, dispositif de commande de rétrogradation forcée et véhicule - Google Patents

Dispositif de détermination, dispositif de commande de rétrogradation forcée et véhicule Download PDF

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Publication number
WO2021166886A1
WO2021166886A1 PCT/JP2021/005638 JP2021005638W WO2021166886A1 WO 2021166886 A1 WO2021166886 A1 WO 2021166886A1 JP 2021005638 W JP2021005638 W JP 2021005638W WO 2021166886 A1 WO2021166886 A1 WO 2021166886A1
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WO
WIPO (PCT)
Prior art keywords
kickdown
kickdown control
determination
executed
control
Prior art date
Application number
PCT/JP2021/005638
Other languages
English (en)
Japanese (ja)
Inventor
厚 内野
好崇 神田
進 角田
Original Assignee
いすゞ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by いすゞ自動車株式会社 filed Critical いすゞ自動車株式会社
Priority to CN202180013758.7A priority Critical patent/CN115066573B/zh
Publication of WO2021166886A1 publication Critical patent/WO2021166886A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/14—Inputs being a function of torque or torque demand
    • F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
    • F16H59/20—Kickdown
    • 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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H59/38—Inputs being a function of speed of gearing elements
    • F16H59/42—Input shaft speed
    • 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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/36—Inputs being a function of speed
    • F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
    • 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
    • F16H61/02—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 characterised by the signals used
    • 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

Definitions

  • This disclosure relates to a judgment device, a kickdown control device, and a vehicle.
  • the gear of the transmission is downshifted to the gear on the high torque side in order to obtain a desired acceleration force when the driver fully depresses the accelerator pedal. It is known that kickdown control is performed.
  • kickdown control when the running speed of the vehicle increases due to kickdown control, if the number of revolutions of the drive source after downshifting exceeds a predetermined upper limit, kickdown control is performed to protect the drive source. Protection control to release is performed.
  • Patent Document 1 even if the execution condition of the kickdown control is satisfied, if the speed of the vehicle is equal to or higher than the predetermined speed set value before the predetermined reset signal is output, the kickdown control is executed.
  • a configuration for controlling the blocking is disclosed.
  • Patent Document 1 has a certain limit as a configuration for solving the problem of vehicle stall based on kickdown control.
  • An object of the present disclosure is to provide a determination device, a kickdown control device, and a vehicle capable of suppressing a vehicle stall based on kickdown control.
  • the determination device is When the execution condition of the kickdown control for downshifting the shift stage of the transmission of the vehicle is satisfied, the acquisition unit for acquiring the parameter related to the speed of the vehicle after downshifting, and the acquisition unit. A determination unit that determines whether or not the kickdown control is executed based on the parameters, With After determining that the kickdown control is not executed, the determination unit repeats the determination of whether or not the kickdown control is executed when a predetermined condition is satisfied.
  • the kickdown control device is With the above judgment device An execution unit that executes the kickdown control based on the determination result of the determination device, and With After executing the kickdown control, the execution unit releases the kickdown control when the rotation speed of the drive source mounted on the vehicle exceeds the upper limit value.
  • the vehicle pertaining to this disclosure A transmission with multiple gears and With the above kickdown controller, To be equipped.
  • FIG. 1 is a diagram showing a configuration of a vehicle provided with a kickdown control device according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram showing an example of a time chart of a shift stage, a kickdown switch, and a reserved signal.
  • FIG. 3 is a diagram showing an example of a time chart of a shift stage, a kickdown switch, and a reserved signal.
  • FIG. 4 is a diagram showing an example of a time chart of a shift stage, a kickdown switch, and a reserved signal.
  • FIG. 5 is a diagram showing an example of a time chart of a shift stage, a kickdown switch, and a reserved signal.
  • FIG. 6 is a flowchart showing an operation example of determination control in the determination unit.
  • FIG. 1 is a diagram showing a configuration of a vehicle 1 provided with a kickdown control device 100 according to an embodiment of the present disclosure.
  • the vehicle 1 includes a propeller shaft 2, a differential gear 3, a drive wheel 4, an engine 5, a transmission 6, a rotation sensor 7, a kickdown signal output unit 8, and a kickdown control. It has a device 100 and.
  • the engine 5 is an internal combustion engine (drive source) such as a diesel engine.
  • the power of the engine 5 is transmitted to the transmission 6 via a clutch (not shown), and the power transmitted to the transmission 6 is transmitted to the drive wheels 4 via the propeller shaft 2 and the differential gear 3.
  • Transmission 6 is a transmission such as an automatic transmission (AMT (Automated Manual Transmission)), and constitutes a plurality of transmission stages.
  • AMT Automatic Manual Transmission
  • the transmission 6 has a transmission mechanism or the like that connects or disconnects the output shaft of the engine 5 and the propeller shaft 2 and changes the gear ratio.
  • the rotation sensor 7 is, for example, a known sensor that detects the rotation speed of the output shaft of the transmission 6.
  • the rotation sensor 7 detects the rotation speed of the output shaft and outputs the detected rotation speed to the kickdown control device 100 (calculation unit 120).
  • the kickdown signal output unit 8 outputs a kickdown signal when the kickdown switch 8A is activated.
  • the kickdown switch 8A is, for example, a switch that operates when the driver fully depresses the accelerator pedal 8B in order to suddenly accelerate the vehicle 1.
  • the execution condition of the kickdown control described later is satisfied.
  • the kickdown signal output unit 8 continues to output the kickdown signal when the kickdown switch 8A continues to operate (when the execution condition of the kickdown control continues to be satisfied).
  • the kickdown signal output unit 8 does not output the kickdown signal when the kickdown switch 8A is not operating (when the execution condition of the kickdown control is not satisfied).
  • the position of the kickdown signal output unit 8 is on the left side of the axle in FIG. 1, but it may be any position as long as the signal of the kickdown switch 8A can be acquired.
  • the kickdown switch 8A and the accelerator pedal 8B are arranged on the right side of the axle for convenience in FIG. 1, they can be appropriately changed according to the configuration of the vehicle 1.
  • the kickdown signal output unit 8 outputs the kickdown signal by acquiring the signal of the kickdown switch 8A, but the present disclosure is not limited to this. For example, even if the kickdown signal output unit 8 outputs the kickdown signal after detecting the position of the accelerator pedal 8B (accelerator opening degree, etc.) and determining whether or not to execute the kickdown control. good.
  • the kickdown control device 100 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and an input / output circuit (not shown).
  • the kickdown control device 100 controls the execution of kickdown control for rapidly accelerating the vehicle 1 by downshifting the shift stage of the transmission 6 of the vehicle 1 based on a preset program.
  • the kickdown control device 100 has an execution unit 110, a calculation unit 120, a reservation unit 130, and a determination unit 140.
  • the calculation unit 120, the reservation unit 130, and the determination unit 140 correspond to the "determination device" of the present disclosure.
  • the execution unit 110 executes kickdown control based on the determination result of the determination unit 140. Further, after executing the kickdown control, the execution unit 110 performs a kickdown release control for releasing the kickdown control when the rotation speed of the engine 5 exceeds the upper limit value.
  • the upper limit value is appropriately set to the maximum value of the rotation speed of the engine 5, a value close to the maximum value, a value having some margin with respect to the maximum value, and the like.
  • the calculation unit 120 calculates the rotation speed of the engine 5 after the downshift in the kickdown control. Specifically, when the calculation unit 120 acquires the kickdown signal, the calculation unit 120 acquires the rotation speed detected by the rotation sensor 7, and calculates the rotation speed of the engine 5 after downshifting based on the rotation speed.
  • the rotation speed of the engine 5 after downshifting is detected by, for example, the gear ratio between the shift stage before downshift (the shift stage set when the kickdown signal is acquired) and the shift stage after downshift, and the rotation sensor 7. It is calculated by the number of revolutions of the output shaft.
  • the rotation speed of the output shaft detected by the rotation sensor 7 is used for calculating the rotation speed of the engine 5, but other parameters such as the rotation speed of the input shaft are used for the rotation of the engine 5. It may be used to calculate the number.
  • the reservation unit 130 turns on the reservation signal for kickdown control when the execution condition for kickdown control is satisfied, that is, when the kickdown switch 8A is operating. Further, after the reservation signal is turned on, the reservation unit 130 determines that the kickdown control is to be executed by the determination unit 140, the execution condition of the kickdown control is not satisfied, or the speed change of the transmission 6. When the stage is shifted up, the reservation signal is switched to OFF.
  • the determination unit 140 acquires the rotation speed of the engine 5 after the downshift from the calculation unit 120, and kicks down the control based on the rotation speed of the engine 5 after the downshift. Judge whether or not to execute.
  • the determination unit 140 corresponds to the "acquisition unit" of the present disclosure.
  • the determination unit 140 determines that the kickdown control is not executed when the rotation speed of the engine 5 after downshifting is larger than the predetermined value, and the rotation speed of the engine 5 after downshifting is less than the predetermined value. If there is, it is determined that the kickdown control is executed.
  • the predetermined value is a rotation speed at which the above kickdown release control is performed, for example, the rotation speed of the engine 5 is a value as close as possible to the upper limit value.
  • the determination unit 140 repeats the determination of whether or not the kickdown control is executed when the predetermined condition is satisfied. Specifically, after determining that the kickdown control is not executed, the determination unit 140 reacquires the rotation speed of the engine 5 after the downshift from the calculation unit 120 when the above-mentioned reservation signal is ON. It is determined whether or not the kickdown control is executed based on the rotation speed of the engine 5 after the downshift, which is acquired again.
  • the rotation speed of the engine 5 after downshifting which is acquired again by the determination unit 140, is calculated by the calculation unit 120 based on the latest detection result of the rotation sensor 7.
  • the kickdown control is not executed when the rotation speed of the engine 5 after the downshift is larger than the predetermined value.
  • the above-mentioned kickdown release control is immediately executed after the execution of the kickdown control.
  • the kick down control that is, the downshift of the transmission 6 is not performed, so that the vehicle 1 may gradually stall.
  • the kickdown control is not executed in such a case, that is, when the rotation speed of the engine 5 after downshifting is larger than the predetermined value. Therefore, it is possible to suppress the stall of the vehicle 1 due to the kickdown release control. Then, after it is determined that the kickdown control is not executed, when the reservation signal is ON, the determination of whether or not the kickdown control is executed is repeated.
  • the kickdown control is not performed forever even though the kickdown switch 8A is in the activated state. Can happen. Therefore, since the transmission is not downshifted, the vehicle 1 may gradually stall.
  • the determination of whether or not the kickdown control is executed is repeated. For example, as shown in FIG. 2, when the kickdown switch 8A is activated while the vehicle 1 is traveling, the reservation signal is turned ON, but when the rotation speed after downshifting is larger than a predetermined value, the kickdown control is executed. Therefore, the transmission speed of the transmission 6 is not downshifted.
  • kickdown control is executed, the shift stage is downshifted, and the reservation signal is turned off. That is, since the kickdown control is finally executed, it is possible to suppress the stall of the vehicle 1 due to the fact that the kickdown control is not performed.
  • the determination unit 140 does not determine whether or not the kickdown control is executed. For example, as shown in FIG. 3, when the kickdown control is performed, that is, when the shift stage of the transmission 6 is downshifted, the reservation signal is immediately turned off.
  • the kickdown execution condition may not be satisfied before the kickdown control is executed.
  • this is a case where the kickdown switch 8A is released after the kickdown switch 8A is activated.
  • the reservation signal is ON while the kickdown switch 8A is operating, but is turned OFF when the operation of the kickdown switch 8A is released.
  • the reserved signal is ON when the shift gear does not change due to the kickdown control not being executed. However, when the gear shifts up, it turns off.
  • FIG. 6 is a flowchart showing an operation example of the determination control in the determination unit 140.
  • the process in FIG. 6 is appropriately executed, for example, when the kickdown is activated.
  • the determination unit 140 acquires the rotation speed after downshifting and determines whether or not the rotation speed after downshifting is larger than a predetermined value (step S101). As a result of the determination, when the rotation speed after downshifting is equal to or less than a predetermined value (step S101, NO), the determination unit 140 determines that the kickdown control is executed (step S102). After step S102, this control ends.
  • step S101, YES when it is determined that the rotation speed after downshifting is larger than the predetermined value (step S101, YES), the determination unit 140 determines that the kickdown control is not executed (step S103). Next, the determination unit 140 determines whether or not the reservation signal is OFF (step S104).
  • step S104 determines whether the reservation signal is ON (step S104, NO). If the reservation signal is ON (step S104, NO), the process returns to step S101. On the other hand, when the reservation signal is OFF (step S104, YES), this control ends.
  • the determination of whether or not the kickdown control is executed is repeated, so that the kickdown control is performed.
  • kickdown control is done as long as it needs to be done. As a result, the stall of the vehicle 1 based on the kickdown control can be suppressed.
  • this control can be performed by simple control.
  • the kickdown control can be surely executed when necessary.
  • the case where the predetermined condition is satisfied is the case where the reservation signal is ON, but the present disclosure is not limited to this.
  • the kickdown control is not executed after the execution condition of the kickdown control is satisfied, the execution condition is not satisfied after the execution condition of the kickdown control is satisfied, and the transmission stage of the transmission 6 is changed.
  • a condition indicating the existence of feasibility of kickdown control such as the fact that the upshift is not performed, may be a predetermined condition.
  • the determination unit 140 acquires a signal or the like that identifies a condition indicating the existence of execution of the kickdown control, the determination unit 140 determines whether or not the predetermined condition is satisfied. good.
  • the number of revolutions of the engine 5 after downshifting is used as a parameter related to the speed of the vehicle 1 after downshifting, but the present disclosure is not limited to this.
  • a parameter other than the rotation speed of the engine 5 after downshifting may be used as the above parameter.
  • the calculation unit 120 is incorporated in the determination device (kickdown control device 100), but the present disclosure is not limited to this, and the determination unit 140 acquires the parameters calculated by the external device. You may try to do it.
  • the engine 5 is illustrated as a drive source, but the present disclosure is not limited to this, and as long as the drive source is mounted on a vehicle, an electric motor or the like other than the engine may be used. good.
  • AMT is exemplified as a transmission, but the present disclosure is not limited to this, and the present disclosure is not limited to this, and an automatic transmission (AT), a dual clutch transmission (DCT), and a continuously variable transmission (CVT (Continuously Variable Transmission)). ) May be.
  • AT automatic transmission
  • DCT dual clutch transmission
  • CVT continuously variable transmission
  • the operation of the kickdown switch 8A is defined as the execution condition of the kickdown control, but the present disclosure is not limited to this, and the kickdown control is performed by, for example, the accelerator opening degree of the accelerator pedal 8B. You may judge the execution condition of.
  • the determination device is incorporated in the kickdown control device 100, but the present disclosure is not limited to this, and the determination device is configured separately from the kickdown control device 100. You may be.
  • the kickdown control device of the present disclosure is useful as a determination device, a kickdown control device, and a vehicle capable of suppressing a vehicle stall based on the kickdown control.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

Un dispositif de détermination selon la présente invention est pourvu : d'une unité d'acquisition qui, lorsqu'une condition d'exécution pour une commande de rétrogradation forcée a été établie, acquiert un paramètre relatif à la vitesse d'un véhicule après une rétrogradation ; et d'une unité de détermination qui détermine si une commande de rétrogradation doit être exécutée ou non. Si une condition prescrite est satisfaite après que l'unité de détermination a déterminé que la commande de rétrogradation forcée ne doit pas être exécutée, l'unité de détermination répète la détermination selon laquelle la commande de rétrogradation doit être exécutée ou non.
PCT/JP2021/005638 2020-02-19 2021-02-16 Dispositif de détermination, dispositif de commande de rétrogradation forcée et véhicule WO2021166886A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180013758.7A CN115066573B (zh) 2020-02-19 2021-02-16 判断装置、强制降挡控制装置及车辆

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-026286 2020-02-19
JP2020026286A JP7497166B2 (ja) 2020-02-19 2020-02-19 判定装置、キックダウン制御装置および車両

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WO2021166886A1 true WO2021166886A1 (fr) 2021-08-26

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62292539A (ja) * 1986-06-12 1987-12-19 Honda Motor Co Ltd 自動車の自動変速機
JPH1089465A (ja) * 1996-09-19 1998-04-07 Jatco Corp 自動変速機の変速制御装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6204445B2 (ja) * 2015-12-04 2017-09-27 株式会社Ｓｕｂａｒｕ 車両制御装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62292539A (ja) * 1986-06-12 1987-12-19 Honda Motor Co Ltd 自動車の自動変速機
JPH1089465A (ja) * 1996-09-19 1998-04-07 Jatco Corp 自動変速機の変速制御装置

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JP7497166B2 (ja) 2024-06-10
JP2021131119A (ja) 2021-09-09
CN115066573A (zh) 2022-09-16
CN115066573B (zh) 2024-05-28

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