WO2022142967A1 - 控制方法、装置及车辆 - Google Patents

控制方法、装置及车辆 Download PDF

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Publication number
WO2022142967A1
WO2022142967A1 PCT/CN2021/134569 CN2021134569W WO2022142967A1 WO 2022142967 A1 WO2022142967 A1 WO 2022142967A1 CN 2021134569 W CN2021134569 W CN 2021134569W WO 2022142967 A1 WO2022142967 A1 WO 2022142967A1
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WIPO (PCT)
Prior art keywords
signal
clutch
mode
automatic transmission
vehicle speed
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PCT/CN2021/134569
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English (en)
French (fr)
Inventor
魏英杰
王建录
张占春
郭晓泉
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长城汽车股份有限公司
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Publication of WO2022142967A1 publication Critical patent/WO2022142967A1/zh

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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
    • F16H61/02—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
    • F16H61/0202—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 the signals being electric
    • F16H61/0204—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 the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0213—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 the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
    • 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
    • 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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/68—Inputs being a function of gearing status
    • 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
    • F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
    • 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
    • F16H59/68—Inputs being a function of gearing status
    • F16H2059/683—Sensing pressure in control systems or in fluid controlled devices, e.g. by pressure sensors

Definitions

  • the present disclosure relates to the technical field of vehicle control, and in particular, to a control method, a device, and a vehicle.
  • TOD switches the low-speed four-wheel drive (4L) mode
  • it usually controls the coupling and opening of the clutch to realize the switching of the 4L mode.
  • the switching of 4L mode can only be completed when the vehicle is in the state of neutral (N) gear.
  • N neutral
  • AT automatic transmission
  • One of the clutches is in the engaged state, and the other One clutch is in a pre-engagement state.
  • the clutch maintains the base oil pressure value.
  • the output torque of the automatic transmission in the N gear is the output torque generated by the two clutches.
  • the current output torque of the automatic transmission based on one clutch in the engaged state and the other clutch in the pre-engaged state is often greater than the preset input torque threshold set by the TOD, which will lead to switching when the low-speed four-wheel drive mode is switched.
  • the phenomenon of failure reduces the reliability of the vehicle and affects the user's driving experience.
  • the present disclosure aims to provide a control method, device and vehicle to solve the problem of switching failure of the automatic transmission when switching the low-speed four-wheel drive mode, reducing the reliability of the vehicle and affecting the user's driving experience.
  • an embodiment of the present disclosure provides a control method applied to an automatic transmission of a vehicle, the method comprising:
  • the intelligent four-wheel drive system is controlled to switch the current working mode to the low-speed four-wheel drive mode.
  • the generating the clutch opening signal includes:
  • the automatic transmission gear signal is a neutral signal
  • the vehicle speed value is less than a preset vehicle speed value threshold
  • a clutch open signal is generated.
  • the driving mode related signal includes a mode switching flag signal and a driving mode signal
  • the driving mode related signals are both preset driving mode related signals
  • the automatic transmission gear signal is a neutral signal
  • generating a clutch open signal including:
  • the mode switching flag signal is a mode switching in-progress signal
  • the automatic transmission gear signal is a neutral signal
  • the vehicle speed value is less than the preset vehicle speed value threshold case
  • the clutch open signal is generated.
  • the method further includes:
  • the clutch is controlled to be engaged when it is detected that the current operating mode is switched to the low-speed four-wheel drive mode.
  • the driving mode-related signal includes a mode switching flag signal, and when it is detected that the current working mode is switched to the low-speed four-wheel drive mode, the clutch is controlled to be engaged, so that the The oil pressure value of the clutch rises from zero to the preset oil pressure value, including:
  • the mode switching flag signal is a mode switching end signal
  • the automatic transmission gear signal is a neutral signal
  • the vehicle speed value is less than a preset vehicle speed value threshold
  • the clutch is controlled to be engaged.
  • an embodiment of the present disclosure provides a control device applied to an automatic transmission of a vehicle, the device comprising:
  • the signal acquisition module is used to acquire driving mode related signals, automatic transmission gear position signals and vehicle speed values;
  • An opening signal generating module is configured to generate a clutch opening signal when the driving mode-related signal, the automatic transmission gear signal and the vehicle speed value meet a preset triggering condition for opening the clutch;
  • Open the clutch control module for controlling the clutch in the pre-engagement state to be in the open state based on the clutch open signal
  • the oil pressure acquisition module is used to acquire the oil pressure value inside the clutch itself
  • the mode switching control module is used to determine that the current torque value is less than the preset input torque threshold when the oil pressure value is zero, and then control the intelligent four-wheel drive system to switch the current working mode to the low-speed four-wheel drive mode.
  • the open signal generating module includes:
  • the signal generation sub-module which is used to, when the driving mode related signals are all preset driving mode related signals, the automatic transmission gear signal is a neutral signal, and the vehicle speed value is less than the preset vehicle speed value threshold, Generates a clutch open signal.
  • the driving mode related signal includes a mode switching flag signal and a driving mode signal
  • the turn-on signal generating sub-module includes:
  • the mode switching flag signal is a mode switching in progress signal
  • the automatic transmission gear signal is a neutral signal
  • the vehicle speed value A clutch open signal is generated when the vehicle speed is less than the preset vehicle speed value threshold.
  • the device further includes:
  • the oil pressure value rise control module is configured to control the clutch to engage when it is detected that the current working mode is switched to the low-speed four-wheel drive mode.
  • the driving mode related signal includes a mode switching flag signal
  • the oil pressure value rise control module includes:
  • a mode determination sub-module configured to determine the current state when the mode switching flag signal is a mode switching end signal, the automatic transmission gear signal is a neutral signal, and the vehicle speed value is less than a preset vehicle speed value threshold The working mode is switched to the low-speed four-wheel drive mode;
  • the oil pressure value rise control sub-module is configured to control the clutch to engage when it is determined that the current working mode is switched to the low-speed four-wheel drive mode.
  • an embodiment of the present disclosure provides a vehicle, including the control device according to any one of the second aspect.
  • the automatic transmission can acquire the driving mode related signal, the automatic transmission gear position signal and the vehicle speed value; when the driving mode related signal, the automatic transmission gear position signal and the vehicle speed value satisfy the preset In the case of the open clutch trigger condition, the clutch open signal is generated; based on the clutch open signal, the clutch in the pre-engagement state is controlled to be in the open state; the oil pressure value inside the clutch itself is obtained; when the oil pressure value is zero At this time, it is determined that the current torque value is less than the preset input torque threshold, and the drag torque of the automatic transmission is reduced, ensuring that the current output torque of the automatic transmission based on the clutch is less than the preset input torque threshold set by the intelligent four-wheel drive system , at this time, the intelligent four-wheel drive system is controlled to switch the current working mode to the low-speed four-wheel drive mode, which avoids that the output torque generated by the current automatic transmission based on one clutch in the engaged state and the other in the pre-engaged state is greater than the TO
  • FIG. 1 shows a flowchart of steps of a control method provided by Embodiment 1 of the present disclosure
  • FIG. 2 shows a flowchart of steps of a control method provided by Embodiment 2 of the present disclosure
  • FIG. 3 shows a schematic signal diagram of a preset trigger condition for opening a clutch provided by an embodiment of the present disclosure
  • FIG. 4 shows a schematic diagram of a trigger condition for engaging a clutch provided by an embodiment of the present disclosure
  • FIG. 5 shows a schematic structural diagram of a control device provided in Embodiment 3 of the present disclosure
  • FIG. 6 shows a block diagram of a computing processing device for performing methods according to the present disclosure.
  • Figure 7 shows a memory unit for holding or carrying program code implementing the method according to the present disclosure.
  • FIG. 1 a flow chart of steps of a control method provided by Embodiment 1 of the present disclosure is shown, and the control method can be applied to an automatic transmission of a vehicle.
  • control method may specifically include the following steps:
  • Step 101 Acquire driving mode related signals, automatic transmission gear signals and vehicle speed values.
  • the driving mode related signals include the mode switching flag signal and the driving mode signal.
  • the driving mode signal includes the driving mode signal valid bit and the driving mode signal.
  • the mode switching flag signal includes the mode switching process flag signal valid bit and the mode switching process flag signal. .
  • the body stability control system (Electronic Stability Program, ESP) can send the driving mode signal to the automatic transmission, and the intelligent four-wheel drive system (Torque-On-Demand, TOD) can send the mode switching flag signal to the automatic transmission.
  • ESP Electronic Stability Program
  • TOD Torque-On-Demand
  • the automatic transmission can obtain the automatic transmission gear signal and vehicle speed value.
  • TOD when TOD switches the low-speed four-wheel drive (4L) mode, it usually controls the coupling and opening of the clutch to realize the switching of the 4L mode.
  • the switching of 4L mode can only be completed when the vehicle is in the state of neutral (N) gear.
  • N neutral
  • AT automatic transmission
  • One of the clutches is in the engaged state, and the other One clutch is in a pre-engagement state.
  • the clutch maintains the basic oil pressure value.
  • the output torque of the automatic transmission in the N gear is the output torque generated by the two clutches.
  • the second clutch corresponding to the oil pressure value, not the clutch in the engaged state.
  • step 102 After acquiring the driving mode related signal, the automatic transmission gear position signal and the vehicle speed value, step 102 is executed.
  • Step 102 Generate a clutch opening signal when the driving mode related signal, the automatic transmission gear signal and the vehicle speed value satisfy a preset triggering condition for opening the clutch.
  • the preset triggering conditions for opening the clutch may include: the driving mode related signals are all preset driving mode related signals, the automatic transmission gear signal is a neutral signal, and the vehicle speed value is less than a preset vehicle speed value threshold.
  • the driving mode related signals are all preset driving mode related signals may include: the driving mode signal includes a driving mode signal valid bit and a driving mode signal, and the driving mode signal valid bit is a valid signal, for example, when 1 means valid, 0 When the representative is invalid, the valid bit of the driving mode signal at this time is 1, and the driving mode signal is the signal for switching to the 4L mode, that is, the current driving mode has been switched to the 4L mode.
  • the mode switching flag signal includes the mode switching process flag signal valid bit and the mode switching process flag signal.
  • the mode switching process flag signal valid bit is a valid signal.
  • the mode switching at this time The valid bit of the process flag signal is 1, and the mode switching process flag signal changes from 0 to 1, where 1 represents that the mode switching is in progress, and 0 represents that the mode is not switched.
  • the valid bit of the driving mode signal sent by the ESP to the automatic transmission is a valid signal
  • the driving mode signal is a signal to switch to 4L mode
  • the mode switching process flag signal sent by TOD to the automatic transmission is valid.
  • the process flag signal changes from 0 to 1
  • the automatic transmission gear signal obtained by the automatic transmission is a neutral signal
  • the vehicle speed value is less than the preset vehicle speed value threshold, it indicates that the trigger signal condition for opening the clutch is satisfied, then Generates a clutch open signal.
  • the preset vehicle speed value threshold may be 5 km/h or 4 km/h, which is not specifically limited in the embodiment of the present disclosure, and may be calibrated and adjusted according to actual application scenarios.
  • step 103 is executed.
  • Step 103 Based on the clutch open signal, control the clutch in the pre-engagement state to be in the open state.
  • the automatic transmission After the automatic transmission generates the clutch open signal, it can control the clutch to be in a fully open state. At this time, the oil pressure value inside the clutch is relieved, that is, the oil pressure value inside the clutch can be reduced.
  • the clutch referred to in this disclosure is a clutch that currently maintains a corresponding base oil pressure value, which corresponds to a base oil pressure value.
  • This disclosure does not specifically limit its existing base oil pressure value, which may be 0.6 bar or 1.2 bar. , which can be calibrated according to the actual scene.
  • step 104 is executed.
  • Step 104 Obtain the oil pressure value inside the clutch itself.
  • the automatic transmission After the automatic transmission generates the clutch open signal, it can control the clutch to be in a fully open state. At this time, the oil pressure value inside the clutch is relieved, that is, the oil pressure value inside the clutch can be reduced. At this time, the clutch itself can be obtained. Internal oil pressure value.
  • step 105 After acquiring the oil pressure value inside the clutch itself, step 105 is executed.
  • Step 105 When the oil pressure value is zero, determine that the current torque value is less than the preset input torque threshold, and then control the intelligent four-wheel drive system to switch the current working mode to the low-speed four-wheel drive mode.
  • the intelligent four-wheel drive system can switch the current working mode to the low-speed four-wheel drive mode at this time.
  • the current working mode may be a two-wheel drive mode, a high-speed four-wheel drive mode, or the like, which is not limited in this embodiment of the present disclosure.
  • the automatic transmission can acquire the driving mode related signal, the automatic transmission gear position signal and the vehicle speed value; when the driving mode related signal, the automatic transmission gear position signal and the vehicle speed value satisfy the preset In the case of the open clutch trigger condition, the clutch open signal is generated; based on the clutch open signal, the clutch in the pre-engagement state is controlled to be in the open state; the oil pressure value inside the clutch itself is obtained; when the oil pressure value is zero At this time, it is determined that the current torque value is less than the preset input torque threshold, and the drag torque of the automatic transmission is reduced, ensuring that the current output torque of the automatic transmission based on the clutch is less than the preset input torque threshold set by the intelligent four-wheel drive system , at this time, the intelligent four-wheel drive system is controlled to switch the current working mode to the low-speed four-wheel drive mode, which avoids that the output torque generated by the current automatic transmission based on one clutch in the engaged state and the other in the pre-engaged state is greater than the TO
  • FIG. 2 a flowchart of steps of a control method provided by Embodiment 2 of the present disclosure is shown, and the control method can be applied to an automatic transmission of a vehicle.
  • control method may specifically include the following steps:
  • Step 201 Acquire driving mode related signals, automatic transmission gear position signals and vehicle speed values.
  • the driving mode related signals include the mode switching flag signal and the driving mode signal.
  • the driving mode signal includes the driving mode signal valid bit and the driving mode signal.
  • the mode switching flag signal includes the mode switching process flag signal valid bit and the mode switching process flag signal. .
  • the body stability control system (Electronic Stability Program, ESP) can send the driving mode signal to the automatic transmission, and the intelligent four-wheel drive system (Torque-On-Demand, TOD) can send the mode switching flag signal to the automatic transmission.
  • ESP Electronic Stability Program
  • TOD Torque-On-Demand
  • the automatic transmission can obtain the automatic transmission gear signal and vehicle speed value.
  • TOD when TOD switches the low-speed four-wheel drive (4L) mode, it usually controls the coupling and opening of the clutch to realize the switching of the 4L mode.
  • the switching of 4L mode can only be completed when the vehicle is in the state of neutral (N) gear.
  • N neutral
  • AT automatic transmission
  • One of the clutches is in the engaged state, and the other One clutch is in a pre-engagement state.
  • the clutch maintains the basic oil pressure value.
  • the output torque of the automatic transmission in the N gear is the output torque generated by the two clutches.
  • the second clutch corresponding to the oil pressure value, not the clutch in the engaged state.
  • step 202 After acquiring the driving mode related signal, the automatic transmission gear signal and the vehicle speed value, step 202 is executed.
  • Step 202 Generate a clutch open signal when the driving mode related signals are all preset driving mode related signals, the automatic transmission gear signal is a neutral signal, and the vehicle speed value is less than a preset vehicle speed value threshold.
  • the driving mode related signal includes a mode switching flag signal and a driving mode signal, in which the driving mode signal is a low-speed four-wheel drive mode signal, the mode switching flag signal is a mode switching in progress signal, and the automatic transmission gear is When the signal is a neutral signal, and the vehicle speed value is less than a preset vehicle speed value threshold, a clutch open signal is generated.
  • the preset triggering conditions for opening the clutch may include: the driving mode related signals are all preset driving mode related signals, the automatic transmission gear signal is a neutral signal, and the vehicle speed value is less than a preset vehicle speed value threshold.
  • the driving mode related signals are all preset driving mode related signals may include: the driving mode signal includes a driving mode signal valid bit and a driving mode signal, and the driving mode signal valid bit is a valid signal, for example, when 1 means valid, 0 When the representative is invalid, the valid bit of the driving mode signal at this time is 1, and the driving mode signal is the signal for switching to the 4L mode, that is, the current driving mode has been switched to the 4L mode.
  • the mode switching flag signal includes the mode switching process flag signal valid bit and the mode switching process flag signal.
  • the mode switching process flag signal valid bit is the valid signal.
  • the mode switching at this time The valid bit of the process flag signal is 1, and the mode switching process flag signal changes from 0 to 1, where 1 represents that the mode switching is in progress, and 0 represents that the mode is not switched.
  • the valid bit of the driving mode signal sent by the ESP to the automatic transmission is a valid signal
  • the driving mode signal is a signal to switch to 4L mode
  • the mode switching process flag signal sent by TOD to the automatic transmission is valid.
  • the process flag signal changes from 0 to 1
  • the automatic transmission gear signal obtained by the automatic transmission is a neutral signal
  • the vehicle speed value is less than the preset vehicle speed value threshold, it indicates that the trigger signal condition for opening the clutch is satisfied, then Generates a clutch open signal.
  • the preset vehicle speed value threshold may be 5 km/h or 4 km/h, which is not specifically limited in this embodiment of the present disclosure, and may be calibrated and adjusted according to actual application scenarios.
  • the automatic transmission gear signal is a neutral signal
  • the vehicle speed value is less than the preset vehicle speed value threshold
  • Step 203 Based on the clutch open signal, control the clutch in the pre-engagement state to be in the open state.
  • the automatic transmission After the automatic transmission generates the clutch open signal, it can control the clutch to be in a fully open state. At this time, the oil pressure value inside the clutch is relieved, that is, the oil pressure value inside the clutch can be reduced.
  • the clutch referred to in this disclosure is a clutch that currently maintains a corresponding base oil pressure value, which corresponds to a base oil pressure value.
  • This disclosure does not specifically limit its existing base oil pressure value, which may be 0.6 bar or 1.2 bar. , which can be calibrated according to the actual scene.
  • FIG. 3 shows a schematic signal diagram of a preset trigger condition for opening the clutch provided by an embodiment of the present disclosure.
  • the valid bit of the driving mode signal sent by the ESP to the automatic transmission is the valid signal 1
  • the driving mode signal is the signal for switching to 4L mode
  • the mode switching process flag signal sent by TOD to the automatic transmission is valid signal 1
  • the mode switching process flag signal changes from 0 to 1
  • the automatic transmission gear signal obtained by the automatic transmission It is a neutral signal
  • the vehicle speed value is less than the preset vehicle speed value threshold, indicating that the trigger signal condition for the opening of the clutch is satisfied, and the clutch in the pre-engagement state is controlled to be in the open state for the clutch to lower the clutch.
  • the internal oil pressure value is 1.2 until the internal oil pressure value is 0.
  • step 204 is executed.
  • Step 204 Obtain the oil pressure value inside the clutch itself.
  • the automatic transmission After the automatic transmission generates the clutch open signal, it can control the clutch to be in a fully open state. At this time, the oil pressure value inside the clutch is relieved, that is, the oil pressure value inside the clutch can be reduced. At this time, the clutch itself can be obtained. Internal oil pressure value.
  • step 205 After acquiring the oil pressure value inside the clutch itself, step 205 is executed.
  • Step 205 when the oil pressure value is zero, determine that the current torque value is less than the preset input torque threshold, and then control the intelligent four-wheel drive system to switch the current working mode to the low-speed four-wheel drive mode.
  • the automatic transmission When the oil pressure value of the automatic transmission is zero, the drag torque of the automatic transmission is reduced, and the automatic transmission further controls the intelligent four-wheel drive system to switch the current working mode to the low-speed four-wheel drive mode.
  • the current working mode may be a two-wheel drive mode, a high-speed four-wheel drive mode, or the like, which is not limited in this embodiment of the present disclosure.
  • step 206 is performed.
  • Step 206 Control the clutch to be engaged in the case that the current operating mode is detected to be switched to the low-speed four-wheel drive mode.
  • the clutch engagement is controlled so that the oil pressure value of the clutch increases from zero to a preset oil pressure value.
  • the driving mode-related signal includes a mode switching flag signal, when the mode switching flag signal is a mode switching end signal, the automatic transmission gear signal is a neutral signal, and the vehicle speed value is less than a preset vehicle speed value threshold. next, determine that the current working mode is switched to the low-speed four-wheel drive mode;
  • the clutch is controlled to be engaged, so that the oil pressure value of the clutch increases from zero to a preset oil pressure value.
  • the preset oil pressure value is also the base oil pressure value.
  • the present disclosure does not specifically limit the existing base oil pressure value, which can be 0.6 bar or 1.2 bar, and can be specifically calibrated according to actual scenarios.
  • the oil pressure value of the clutch rises from zero to the preset oil pressure value, which can ensure the quickness of the gear switching process.
  • the valid bit of the flag bit signal during the mode switching process sent from the TOD to the automatic transmission is the valid signal 1
  • the mode switching process flag signal changes from 1 to 0
  • the automatic transmission gear signal obtained by the automatic transmission is a neutral signal
  • the vehicle speed value is less than the preset vehicle speed value threshold
  • the clutch engagement trigger signal condition is met
  • the clutch is controlled to be engaged, so that the oil pressure value of the clutch increases from zero to a preset oil pressure value of 1.2 bar.
  • the automatic transmission can acquire the driving mode related signal, the automatic transmission gear position signal and the vehicle speed value; when the driving mode related signal, the automatic transmission gear position signal and the vehicle speed value satisfy the preset In the case of the open clutch trigger condition, the clutch open signal is generated; based on the clutch open signal, the clutch in the pre-engagement state is controlled to be in the open state; the oil pressure value inside the clutch itself is obtained; when the oil pressure value is zero At this time, it is determined that the current torque value is less than the preset input torque threshold, and the drag torque of the automatic transmission is reduced, ensuring that the current output torque of the automatic transmission based on the clutch is less than the preset input torque threshold set by the intelligent four-wheel drive system , at this time, the intelligent four-wheel drive system is controlled to switch the current working mode to the low-speed four-wheel drive mode, which avoids that the output torque generated by the current automatic transmission based on one clutch in the engaged state and the other in the pre-engaged state is greater than the TO
  • FIG. 5 a schematic structural diagram of a control device provided in Embodiment 3 of the present disclosure is shown, and the control device is applied to an automatic transmission of a vehicle.
  • control device 300 may specifically include:
  • a signal acquisition module 301 configured to acquire driving mode related signals, automatic transmission gear position signals and vehicle speed values
  • An opening signal generating module 302 is configured to generate a clutch opening signal when the driving mode related signal, the automatic transmission gear signal and the vehicle speed value meet a preset triggering condition for opening the clutch;
  • Open the clutch control module 303 for controlling the clutch in the pre-engagement state to be in the open state based on the clutch open signal
  • an oil pressure acquisition module 304 configured to acquire the oil pressure value inside the clutch itself
  • the mode switching control module 305 is configured to determine that the current torque value is less than the preset input torque threshold when the oil pressure value is zero, and then control the intelligent four-wheel drive system to switch the current working mode to the low-speed four-wheel drive mode.
  • the open signal generating module includes:
  • the signal generation sub-module which is used to, when the driving mode related signals are all preset driving mode related signals, the automatic transmission gear signal is a neutral signal, and the vehicle speed value is less than the preset vehicle speed value threshold, Generates a clutch open signal.
  • the driving mode related signal includes a mode switching flag signal and a driving mode signal
  • the turn-on signal generating sub-module includes:
  • the mode switching flag signal is a mode switching in progress signal
  • the automatic transmission gear signal is a neutral signal
  • the vehicle speed value A clutch open signal is generated when the vehicle speed is less than the preset vehicle speed value threshold.
  • the device further includes:
  • the oil pressure value rise control module is configured to control the clutch to engage when it is detected that the current working mode is switched to the low-speed four-wheel drive mode.
  • the driving mode related signal includes a mode switching flag signal
  • the oil pressure value rise control module includes:
  • a mode determination sub-module configured to determine the current state when the mode switching flag signal is a mode switching end signal, the automatic transmission gear signal is a neutral signal, and the vehicle speed value is less than a preset vehicle speed value threshold The working mode is switched to the low-speed four-wheel drive mode;
  • the oil pressure value rise control sub-module is configured to control the clutch to engage when it is determined that the current working mode is switched to the low-speed four-wheel drive mode.
  • the automatic transmission can obtain the driving mode related signal, the automatic transmission gear signal and the vehicle speed value; when the driving mode related signal, the automatic transmission gear signal and the vehicle speed value satisfy the preset In the case of the open clutch trigger condition, the clutch open signal is generated; based on the clutch open signal, the clutch in the pre-engagement state is controlled to be in the open state; the oil pressure value inside the clutch itself is obtained; when the oil pressure value is zero At this time, it is determined that the current torque value is less than the preset input torque threshold, and the drag torque of the automatic transmission is reduced, ensuring that the current output torque of the automatic transmission based on the clutch is less than the preset input torque threshold set by the intelligent four-wheel drive system , at this time, the intelligent four-wheel drive system is controlled to switch the current working mode to the low-speed four-wheel drive mode, which avoids that the output torque generated by the current automatic transmission based on one clutch in the engaged state and the other in the pre-engaged state is greater than the TOD setting
  • Embodiments of the present disclosure also provide a vehicle, including the above-mentioned control device.
  • embodiments of the embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media having computer-usable program code embodied therein, including but not limited to disk storage, CD-ROM, optical storage, and the like.
  • Embodiments of the present disclosure are described with reference to flowcharts and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present disclosure. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing terminal equipment to produce a machine that causes the instructions to be executed by the processor of the computer or other programmable data processing terminal equipment Means are created for implementing the functions specified in the flow or flows of the flowcharts and/or the blocks or blocks of the block diagrams.
  • These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing terminal equipment to operate in a particular manner, such that the instructions stored in the computer readable memory result in an article of manufacture comprising instruction means, the The instruction means implement the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.
  • the device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.
  • Various component embodiments of the present disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof.
  • a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in a computing processing device according to embodiments of the present disclosure.
  • DSP digital signal processor
  • the present disclosure can also be implemented as apparatus or apparatus programs (eg, computer programs and computer program products) for performing some or all of the methods described herein.
  • Such a program implementing the present disclosure may be stored on a computer-readable medium, or may be in the form of one or more signals. Such signals may be downloaded from Internet sites, or provided on carrier signals, or in any other form.
  • Figure 6 illustrates a computing processing device that may implement methods in accordance with the present disclosure.
  • the computing processing device traditionally includes a processor 1010 and a computer program product or computer readable medium in the form of a memory 1020 .
  • the memory 1020 may be electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM.
  • the memory 1020 has storage space 1030 for program code 1031 for performing any of the method steps in the above-described methods.
  • the storage space 1030 for program codes may include various program codes 1031 for implementing various steps in the above methods, respectively.
  • the program codes can be read from or written to one or more computer program products.
  • These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such computer program products are typically portable or fixed storage units as described with reference to FIG. 7 .
  • the storage unit may have storage segments, storage spaces, etc. arranged similarly to the memory 1020 in the computing processing device of FIG. 6 .
  • the program code may, for example, be compressed in a suitable form.
  • the storage unit includes computer readable code 1031', ie code readable by a processor such as 1010 for example, which when executed by a computing processing device, causes the computing processing device to perform any of the methods described above. of the various steps.

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Abstract

本公开提供了一种控制方法、装置及车辆，应用于车辆的自动变速器，包括：获取驾驶模式相关信号、自动变速器挡位信号和车速值；在驾驶模式相关信号、自动变速器挡位信号和车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；基于离合器打开信号，控制处于预结合状态下的离合器处于打开状态；获取离合器自身内部的油压值；在所述油压值为零时，此时自动变速器的拖曳力矩得到减小，保证了自动变速器当前的基于离合器产生的输出扭矩小于智能四驱系统设定的预设输入扭矩阈值，此时控制智能四驱系统将当前工作模式切换为低速四驱模式，避免在进行低速四驱模式的切换时出现切换失败的现象，提高了车辆的可靠性，提高了用户的驾驶体验。

Description

控制方法、装置及车辆
相关申请的交叉引用
本申请要求在2020年12月28日提交中国专利局、申请号为202011586017.1、名称为“控制方法、装置及车辆”的中国专利公开的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及车辆控制技术领域，特别涉及一种控制方法、装置及车辆。
背景技术
随着车辆控制技术领域的逐渐发展，智能四驱系统(Torque-On-Demand，TOD)作为车辆的一个分支也得到了快速的发展。
目前，TOD在进行低速四驱(4L)模式的切换时，通常通过控制离合器的结合与打开，以实现4L模式的切换。其中，在车辆处于空(Neutral，N)挡的状态下才可以完成4L模式的切换，对于自动变速器(Automatic Transmission，AT)，N挡对应有两个离合器结合，其中一个离合器处于结合状态，另一个离合器处于预结合状态，在预结合状态下，该离合器保持基础油压值，此时自动变速器在N挡的输出扭矩为两个离合器产生的输出扭矩。
但是，自动变速器当前的基于一个处于结合状态离合器，另一个处于预结合状态离合器产生的输出扭矩往往大于TOD所设定的预设输入扭矩阈值，会导致在进行低速四驱模式的切换时出现切换失败的现象，降低了车辆的可靠性，影响用户的驾驶体验。
概述
有鉴于此，本公开旨在提出一种控制方法、装置及车辆，以解决自动变速器在进行低速四驱模式的切换时出现切换失败的现象，降低车辆可靠性，影响用户的驾驶体验的问题。
为达到上述目的，本公开的技术方案是这样实现的：
第一方面，本公开实施例提供了一种控制方法，应用于车辆的自动变速器， 所述方法包括：
获取驾驶模式相关信号、自动变速器挡位信号和车速值；
在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；
基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态；获取离合器自身内部的油压值；
在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式。
可选地，所述在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设打开离合器触发条件的情况下，生成离合器打开信号，包括：
在所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
可选地，所述驾驶模式相关信号包括模式切换标志位信号和驾驶模式信号，所述在所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号，包括：
在所述驾驶模式信号为低速四驱模式信号、所述模式切换标志位信号为模式切换进行中信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
可选地，所述在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式之后，还包括：
在检测到所述当前工作模式被切换为所述低速四驱模式的情况下，控制所述离合器接合。
可选地，所述驾驶模式相关信号包括模式切换标志位信号，所述在检测到所述当前工作模式被切换为所述低速四驱模式的情况下，控制所述离合器接合，以供所述离合器的油压值由零上升至预设油压值，包括：
在所述模式切换标志位信号为模式切换结束信号、所述自动变速器挡位信号为空挡信号且所述车速值小于预设车速值阈值的情况下，确定所述当前工作模式切换为所述低速四驱模式；
在确定所述当前工作模式切换为所述低速四驱模式的情况下，控制所述离合器接合。
第二方面，本公开实施例提供了一种控制装置，应用于车辆的自动变速器，所述装置包括：
信号获取模块，用于获取驾驶模式相关信号、自动变速器挡位信号和车速值；
打开信号生成模块，用于在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；
打开离合器控制模块，用于基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态；
油压获取模块，用于获取离合器自身内部的油压值；
模式切换控制模块，用于在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式。
可选地，所述打开信号生成模块包括：
打开信号生成子模块，用于在所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
可选地，所述驾驶模式相关信号包括模式切换标志位信号和驾驶模式信号，所述打开信号生成子模块包括：
打开信号生成单元，用于在所述驾驶模式信号为低速四驱模式信号、所述模式切换标志位信号为模式切换进行中信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
可选地，所述装置还包括：
油压值上升控制模块，用于在检测到所述当前工作模式被切换为所述低速四驱模式的情况下，控制所述离合器接合。
可选地，所述驾驶模式相关信号包括模式切换标志位信号，所述油压值上升控制模块包括：
模式确定子模块，用于在所述模式切换标志位信号为模式切换结束信号、所述自动变速器挡位信号为空挡信号且所述车速值小于预设车速值阈值的情况 下，确定所述当前工作模式切换为所述低速四驱模式；
油压值上升控制子模块，用于在确定所述当前工作模式切换为所述低速四驱模式的情况下，控制所述离合器接合。
第三方面，本公开实施例提供了一种车辆，包括第二方面任一所述的控制装置。
相对于现有技术，本公开实施例具有如下优点：
本公开实施例提供的控制方法，自动变速器可以获取驾驶模式相关信号、自动变速器挡位信号和车速值；在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态；获取离合器自身内部的油压值；在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，此时自动变速器的拖曳力矩得到减小，保证了自动变速器当前的基于离合器产生的输出扭矩小于智能四驱系统所设定的预设输入扭矩阈值，此时控制智能四驱系统将当前工作模式切换为低速四驱模式，避免了自动变速器由于当前的基于一个处于结合状态离合器，另一个处于预结合状态离合器产生的输出扭矩大于TOD所设定的预设输入扭矩阈值，导致的在进行低速四驱模式的切换时出现切换失败的现象，提高了车辆的可靠性，提高了用户的驾驶体验。
附图简述
构成本公开的一部分的附图用来提供对本公开的进一步理解，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1示出了本公开实施例一提供的一种控制方法的步骤流程图；
图2示出了本公开实施例二提供的一种控制方法的步骤流程图
图3示出了本公开实施例提供的一种预设的打开离合器触发条件的信号示意图；
图4示出了本公开实施例提供的一种接合离合器的触发条件的示意图；
图5示出了本公开实施例三提供的一种控制装置的结构示意图；
图6示出了用于执行根据本公开的方法的计算处理设备的框图；并且
图7示出了用于保持或者携带实现根据本公开的方法的程序代码的存储单元。
详细描述
需要说明的是，在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互组合。
下面将参考附图并结合实施例来详细说明本公开。
参照图1，示出了本公开实施例一提供的一种控制方法的步骤流程图，该控制方法可以应用于车辆的自动变速器。
如图1所示，该控制方法具体可以包括如下步骤：
步骤101：获取驾驶模式相关信号、自动变速器挡位信号和车速值。
驾驶模式相关信号包括模式切换标志位信号和驾驶模式信号，驾驶模式信号包括驾驶模式信号有效位和驾驶模式信号，模式切换标志位信号包括模式切换过程标志位信号有效位和模式切换过程标志位信号。
车身稳定控制系统(Electronic Stability Program，ESP)可以将驾驶模式信号发送至自动变速器，智能四驱系统(Torque-On-Demand，TOD)可以将模式切换标志位信号发送至自动变速器。
自动变速器可以获取自动变速器挡位信号和车速值。
需要说明的是，目前，TOD在进行低速四驱(4L)模式的切换时，通常通过控制离合器的结合与打开，以实现4L模式的切换。其中，在车辆处于空(Neutral，N)挡的状态下才可以完成4L模式的切换，对于自动变速器(Automatic Transmission，AT)，N挡对应有两个离合器结合，其中一个离合器处于结合状态，另一个离合器处于预结合状态，在预结合状态下，该离合器保持基础油压值，此时自动变速器在N挡的输出扭矩为两个离合器产生的输出扭矩，本公开所指的离合器为目前保持基础油压值对应的第二个离合器，而不是出于结合状态的离合器。
在获取驾驶模式相关信号、自动变速器挡位信号和车速值之后，执行步骤102。
步骤102：在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号。
预设的打开离合器触发条件可以包括：所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值。
具体地，所述驾驶模式相关信号均为预设驾驶模式相关信号可以包括：驾驶模式信号包括驾驶模式信号有效位和驾驶模式信号，驾驶模式信号有效位为有效信号，例如当1代表有效，0代表无效时，此时的驾驶模式信号有效位为1，驾驶模式信号为切换至4L模式信号，也即是当前驾驶模式已经切换为4L模式。模式切换标志位信号包括模式切换过程标志位信号有效位和模式切换过程标志位信号，模式切换过程标志位信号有效位为有效信号，例如当1代表有效，0代表无效时，此时的模式切换过程标志位信号有效位为1，模式切换过程标志位信号由0变为1，其中，1代表模式切换进行中，0代表模式未进行切换。
也即是，在ESP发送至自动变速器的驾驶模式信号有效位为有效信号、驾驶模式信号为切换至4L模式信号、TOD发送至自动变速器的模式切换过程标志位信号有效位为有效信号、模式切换过程标志位信号由0变为1、自动变速器获取的自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，表明满足了对离合器的打开触发信号条件，则生成离合器打开信号。
其中，预设车速值阈值可以是5千米/小时，还可以是4千米/小时，本公开实施例对此不作具体限定，可以根据实际应用场景做具体标定调整。
在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号之后，执行步骤103。
步骤103：基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态。
自动变速器在生成离合器打开信号后，可以控制离合器处于完全打开状态，此时，离合器内部的油压值得到泄压，也即是离合器内部的油压值可以得到降低。
本公开所指的离合器为目前保持基础油压值对应的离合器，其对应有基础油压值，本公开对其现有的基础油压值不作具体限定，可以是0.6bar，也可以是1.2bar，可以根据实际场景做具体标定。
在基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态之后，执行步骤104。
步骤104：获取离合器自身内部的油压值。
自动变速器在生成离合器打开信号后，可以控制离合器处于完全打开状态，此时，离合器内部的油压值得到泄压，也即是离合器内部的油压值可以得到降低，此时，可以获取离合器自身内部的油压值。
在获取离合器自身内部的油压值之后，执行步骤105。
步骤105：在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式。
自动变速器在所述油压值为零时，此时自动变速器的拖曳力矩得到减小，此时智能四驱系统可以将当前工作模式切换为低速四驱模式。
其中，当前工作模式可以为二驱模式，也可以为高速四驱模式等，本公开实施例对此不作限定。
本公开实施例提供的控制方法，自动变速器可以获取驾驶模式相关信号、自动变速器挡位信号和车速值；在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态；获取离合器自身内部的油压值；在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，此时自动变速器的拖曳力矩得到减小，保证了自动变速器当前的基于离合器产生的输出扭矩小于智能四驱系统所设定的预设输入扭矩阈值，此时控制智能四驱系统将当前工作模式切换为低速四驱模式，避免了自动变速器由于当前的基于一个处于结合状态离合器，另一个处于预结合状态离合器产生的输出扭矩大于TOD所设定的预设输入扭矩阈值，导致的在进行低速四驱模式的切换时出现切换失败的现象，提高了车辆的可靠性，提高了用户的驾驶体验。
参照图2，示出了本公开实施例二提供的一种控制方法的步骤流程图，该控制方法可以应用于车辆的自动变速器。
如图2所示，该控制方法具体可以包括如下步骤：
步骤201：获取驾驶模式相关信号、自动变速器挡位信号和车速值。
驾驶模式相关信号包括模式切换标志位信号和驾驶模式信号，驾驶模式信号包括驾驶模式信号有效位和驾驶模式信号，模式切换标志位信号包括模式切换过程标志位信号有效位和模式切换过程标志位信号。
车身稳定控制系统(Electronic Stability Program，ESP)可以将驾驶模式信号发送至自动变速器，智能四驱系统(Torque-On-Demand，TOD)可以将模式切换标志位信号发送至自动变速器。
自动变速器可以获取自动变速器挡位信号和车速值。
需要说明的是，目前，TOD在进行低速四驱(4L)模式的切换时，通常通过控制离合器的结合与打开，以实现4L模式的切换。其中，在车辆处于空(Neutral，N)挡的状态下才可以完成4L模式的切换，对于自动变速器(Automatic Transmission，AT)，N挡对应有两个离合器结合，其中一个离合器处于结合状态，另一个离合器处于预结合状态，在预结合状态下，该离合器保持基础油压值，此时自动变速器在N挡的输出扭矩为两个离合器产生的输出扭矩，本公开所指的离合器为目前保持基础油压值对应的第二个离合器，而不是出于结合状态的离合器。
在获取驾驶模式相关信号、自动变速器挡位信号和车速值之后，执行步骤202。
步骤202：在所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
所述驾驶模式相关信号包括模式切换标志位信号和驾驶模式信号，在所述驾驶模式信号为低速四驱模式信号、所述模式切换标志位信号为模式切换进行中信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
预设的打开离合器触发条件可以包括：所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值。
具体地，所述驾驶模式相关信号均为预设驾驶模式相关信号可以包括：驾驶模式信号包括驾驶模式信号有效位和驾驶模式信号，驾驶模式信号有效位为有效信号，例如当1代表有效，0代表无效时，此时的驾驶模式信号有效位为1，驾驶模式信号为切换至4L模式信号，也即是当前驾驶模式已经切换为4L模式。模式切换标志位信号包括模式切换过程标志位信号有效位和模式切换过程标志位信号，模式切换过程标志位信号有效位为有效信号，例如当1代表有效，0 代表无效时，此时的模式切换过程标志位信号有效位为1，模式切换过程标志位信号由0变为1，其中，1代表模式切换进行中，0代表模式未进行切换。
也即是，在ESP发送至自动变速器的驾驶模式信号有效位为有效信号、驾驶模式信号为切换至4L模式信号、TOD发送至自动变速器的模式切换过程标志位信号有效位为有效信号、模式切换过程标志位信号由0变为1、自动变速器获取的自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，表明满足了对离合器的打开触发信号条件，则生成离合器打开信号。
其中，预设车速值阈值可以是5千米/小时，还可以是4千米/小时，本公开实施例对此不作具体限定，可以根据实际应用场景做具体标定调整。
在所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号之后，执行步骤203。
步骤203：基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态。
自动变速器在生成离合器打开信号后，可以控制离合器处于完全打开状态，此时，离合器内部的油压值得到泄压，也即是离合器内部的油压值可以得到降低。
本公开所指的离合器为目前保持基础油压值对应的离合器，其对应有基础油压值，本公开对其现有的基础油压值不作具体限定，可以是0.6bar，也可以是1.2bar，可以根据实际场景做具体标定。
示例地，图3示出了本公开实施例提供的一种预设的打开离合器触发条件的信号示意图，如图3所示，在ESP发送至自动变速器的驾驶模式信号有效位为有效信号1、驾驶模式信号为切换至4L模式信号、TOD发送至自动变速器的模式切换过程标志位信号有效位为有效信号1、模式切换过程标志位信号由0变为1、自动变速器获取的自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，表明满足了对离合器的打开触发信号条件，则控制处于预结合状态下的离合器处于打开状态，以供所述离合器降低离合器自身内部的油压值1.2直至内部的油压值为0。
在基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态后，执行步骤204。
步骤204：获取离合器自身内部的油压值。
自动变速器在生成离合器打开信号后，可以控制离合器处于完全打开状态，此时，离合器内部的油压值得到泄压，也即是离合器内部的油压值可以得到降低，此时，可以获取离合器自身内部的油压值。
在获取离合器自身内部的油压值之后，执行步骤205。
步骤205：在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式。
自动变速器在所述油压值为零时，此时自动变速器的拖曳力矩得到减小，此时自动变速器进而控制智能四驱系统将当前工作模式切换为低速四驱模式。
其中，当前工作模式可以为二驱模式，也可以为高速四驱模式等，本公开实施例对此不作限定。
在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式之后，执行步骤206。
步骤206：在检测到所述当前工作模式被切换为所述低速四驱模式的情况下，控制所述离合器接合。
在本公开中，控制所述离合器接合，以供所述离合器的油压值由零上升至预设油压值。
所述驾驶模式相关信号包括模式切换标志位信号，在所述模式切换标志位信号为模式切换结束信号、所述自动变速器挡位信号为空挡信号且所述车速值小于预设车速值阈值的情况下，确定所述当前工作模式切换为所述低速四驱模式；
在确定所述当前工作模式切换为所述低速四驱模式的情况下，控制所述离合器接合，以供所述离合器的油压值由零上升至预设油压值。
其中，预设油压值也即是基础油压值，本公开对其现有的基础油压值不作具体限定，可以是0.6bar，也可以是1.2bar，可以根据实际场景做具体标定。
离合器的油压值由零上升至预设油压值，可以保证挡位切换过程的快速性。
示例地，图4示出了本公开实施例提供的一种接合离合器的触发条件的示意图，如图4所示：在TOD发送至自动变速器的模式切换过程标志位信号有效位为有效信号1、模式切换过程标志位信号由1变为0、自动变速器获取的自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，表 明满足了对离合器的接合触发信号条件，则控制所述离合器接合，以供所述离合器的油压值由零上升至预设油压值1.2bar。
本公开实施例提供的控制方法，自动变速器可以获取驾驶模式相关信号、自动变速器挡位信号和车速值；在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态；获取离合器自身内部的油压值；在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，此时自动变速器的拖曳力矩得到减小，保证了自动变速器当前的基于离合器产生的输出扭矩小于智能四驱系统所设定的预设输入扭矩阈值，此时控制智能四驱系统将当前工作模式切换为低速四驱模式，避免了自动变速器由于当前的基于一个处于结合状态离合器，另一个处于预结合状态离合器产生的输出扭矩大于TOD所设定的预设输入扭矩阈值，导致的在进行低速四驱模式的切换时出现切换失败的现象，提高了车辆的可靠性，提高了用户的驾驶体验。
参照图5，示出了本公开实施例三提供的一种控制装置的结构示意图，该控制装置应用于车辆的自动变速器。
如图5所示，该控制装置300具体可以包括：
信号获取模块301，用于获取驾驶模式相关信号、自动变速器挡位信号和车速值；
打开信号生成模块302，用于在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；
打开离合器控制模块303，用于基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态；
油压获取模块304，用于获取所述离合器自身内部的油压值；
模式切换控制模块305，用于在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式。
可选地，所述打开信号生成模块包括：
打开信号生成子模块，用于在所述驾驶模式相关信号均为预设驾驶模式相 关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
可选地，所述驾驶模式相关信号包括模式切换标志位信号和驾驶模式信号，所述打开信号生成子模块包括：
打开信号生成单元，用于在所述驾驶模式信号为低速四驱模式信号、所述模式切换标志位信号为模式切换进行中信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
可选地，所述装置还包括：
油压值上升控制模块，用于在检测到所述当前工作模式被切换为所述低速四驱模式的情况下，控制所述离合器接合。
可选地，所述驾驶模式相关信号包括模式切换标志位信号，所述油压值上升控制模块包括：
模式确定子模块，用于在所述模式切换标志位信号为模式切换结束信号、所述自动变速器挡位信号为空挡信号且所述车速值小于预设车速值阈值的情况下，确定所述当前工作模式切换为所述低速四驱模式；
油压值上升控制子模块，用于在确定所述当前工作模式切换为所述低速四驱模式的情况下，控制所述离合器接合。
本公开实施例中的控制装置的具体实现方式在方法侧已经详细介绍，故在此不再做赘述。
本公开实施例提供的控制装置，自动变速器可以获取驾驶模式相关信号、自动变速器挡位信号和车速值；在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态；获取离合器自身内部的油压值；在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，此时自动变速器的拖曳力矩得到减小，保证了自动变速器当前的基于离合器产生的输出扭矩小于智能四驱系统所设定的预设输入扭矩阈值，此时控制智能四驱系统将当前工作模式切换为低速四驱模式，避免了自动变速器由于当前的基于一个处于结合状态离合器，另一个处于预结合状态离合器产生的输出扭矩大于TOD所设定的预设输入扭矩阈值，导致的在进行低速四驱模式的切换时出现切换失败的现象，提高了车辆的可靠性，提高了用户 的驾驶体验。
本公开实施例还提供了一种车辆，包括上述的控制装置。
需要说明的是，本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。
以上所述仅为本公开的较佳实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。
本领域内的技术人员应明白，本公开实施例的实施例可提供为方法、装置、或计算机程序产品。因此，本公开实施例可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开实施例是参照根据本公开实施例的方法、终端设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理终端设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理终端设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理终端设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理终端设备上，使得在计算机或其他可编程终端设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程终端设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。
本公开的各个部件实施例可以以硬件实现，或者以在一个或者多个处理器上运行的软件模块实现，或者以它们的组合实现。本领域的技术人员应当理解，可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本公开实施例的计算处理设备中的一些或者全部部件的一些或者全部功能。本公开还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如，计算机程序和计算机程序产品)。这样的实现本公开的程序可以存储在计算机可读介质上，或者可以具有一个或者多个信号的形式。这样的信号可以从因特网网站上下载得到，或者在载体信号上提供，或者以任何其他形式提供。
例如，图6示出了可以实现根据本公开的方法的计算处理设备。该计算处理设备传统上包括处理器1010和以存储器1020形式的计算机程序产品或者计算机可读介质。存储器1020可以是诸如闪存、EEPROM(电可擦除可编程只读存储器)、EPROM、硬盘或者ROM之类的电子存储器。存储器1020具有用于执行上述方法中的任何方法步骤的程序代码1031的存储空间1030。例如，用于程序代码的存储空间1030可以包括分别用于实现上面的方法中的各种步骤的各个程序代码1031。这些程序代码可以从一个或者多个计算机程序产品中读出或者写入到这一个或者多个计算机程序产品中。这些计算机程序产品包括诸如硬盘，紧致盘(CD)、存储卡或者软盘之类的程序代码载体。这样的计算机程序产品通常为如参考图7所述的便携式或者固定存储单元。该存储单元可以具有与图6的计算处理设备中的存储器1020类似布置的存储段、存储空间等。程序代码可以例如以适当形式进行压缩。通常，存储单元包括计算机可读代码1031’，即可以由例如诸如1010之类的处理器读取的代码，这些代码当由计算处理设备运行时，导致该计算处理设备执行上面所描述的方法中的各个步骤。
以上所述仅为本公开的较佳实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公 开的保护范围之内。
尽管已描述了本公开实施例的可选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权利要求意欲解释为包括可选实施例以及落入本公开实施例范围的所有变更和修改。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体与另一个实体区分开来，而不一定要求或者暗示这些实体之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的物品或者终端设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种物品或者终端设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的物品或者终端设备中还存在另外的相同要素。
以上对本公开所提供的技术方案进行了详细介绍，本文中应用了具体个例对本公开的原理及实施方式进行了阐述，同时，对于本领域的一般技术人员，依据本公开的原理及实现方式，在具体实施方式及应用范围上均会有改变之处，综上，本说明书内容不应理解为对本公开的限制。

Claims (14)

  1. 一种控制方法，其特征在于，应用于车辆的自动变速器，所述方法包括：
    获取驾驶模式相关信号、自动变速器挡位信号和车速值；
    在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；
    基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态；
    获取离合器自身内部的油压值；以及
    在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式。
  2. 根据权利要求1所述的方法，其特征在于，所述在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设打开离合器触发条件的情况下，生成离合器打开信号，包括：
    在所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
  3. 根据权利要求2所述的方法，其特征在于，所述驾驶模式相关信号包括模式切换标志位信号和驾驶模式信号，所述在所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号，包括：
    在所述驾驶模式信号为低速四驱模式信号、所述模式切换标志位信号为模式切换进行中信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
  4. 根据权利要求1所述的方法，其特征在于，所述在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式之后，还包括：
    在检测到所述当前工作模式被切换为所述低速四驱模式的情况下，控制所述离合器接合。
  5. 根据权利要求4所述的方法，其特征在于，所述驾驶模式相关信号包括模式切换标志位信号，所述在检测到所述当前工作模式被切换为所述低速四驱 模式的情况下，控制所述离合器关闭，包括：
    在所述模式切换标志位信号为模式切换结束信号、所述自动变速器挡位信号为空挡信号且所述车速值小于预设车速值阈值的情况下，确定所述当前工作模式切换为所述低速四驱模式；以及
    在确定所述当前工作模式切换为所述低速四驱模式的情况下，控制所述离合器接合。
  6. 一种控制装置，其特征在于，应用车辆的自动变速器，所述装置包括：
    信号获取模块，用于获取驾驶模式相关信号、自动变速器挡位信号和车速值；
    打开信号生成模块，用于在所述驾驶模式相关信号、所述自动变速器挡位信号和所述车速值满足预设的打开离合器触发条件的情况下，生成离合器打开信号；
    打开离合器控制模块，用于基于所述离合器打开信号，控制处于预结合状态下的离合器处于打开状态；
    油压获取模块，用于获取所述离合器自身内部的油压值；以及
    模式切换控制模块，用于在所述油压值为零时，确定当前扭矩值小于预设输入扭矩阈值，进而控制智能四驱系统将当前工作模式切换为低速四驱模式。
  7. 根据权利要求6所述的装置，其特征在于，所述打开信号生成模块包括：
    打开信号生成子模块，用于在所述驾驶模式相关信号均为预设驾驶模式相关信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
  8. 根据权利要求7所述的装置，其特征在于，所述驾驶模式相关信号包括模式切换标志位信号和驾驶模式信号，所述打开信号生成子模块包括：
    打开信号生成单元，用于在所述驾驶模式信号为低速四驱模式信号、所述模式切换标志位信号为模式切换进行中信号、所述自动变速器挡位信号为空挡信号，且所述车速值小于预设车速值阈值的情况下，生成离合器打开信号。
  9. 根据权利要求6所述的装置，其特征在于，所述装置还包括：
    油压值上升控制模块，用于在检测到所述当前工作模式被切换为所述低速四驱模式的情况下，控制所述离合器接合。
  10. 根据权利要求9所述的装置，其特征在于，所述驾驶模式相关信号包 括模式切换标志位信号，所述油压值上升控制模块包括：
    模式确定子模块，用于在所述模式切换标志位信号为模式切换结束信号、所述自动变速器挡位信号为空挡信号且所述车速值小于预设车速值阈值的情况下，确定所述当前工作模式切换为所述低速四驱模式；
    油压值上升控制子模块，用于在确定所述当前工作模式切换为所述低速四驱模式的情况下，控制所述离合器接合。
  11. 一种车辆，其特征在于，包括权利要求6至权利要求10任一项所述的控制装置。
  12. 一种计算处理设备，其特征在于，包括：
    存储器，其中存储有计算机可读代码；以及
    一个或多个处理器，当所述计算机可读代码被所述一个或多个处理器执行时，所述计算处理设备执行如权利要求1-5任一项所述的控制车辆的方法。
  13. 一种计算机程序，包括计算机可读代码，当所述计算机可读代码在计算处理设备上运行时，导致所述计算处理设备执行根据权利要求1-5任一项所述控制车辆的方法。
  14. 一种计算机可读介质，其中存储了如权利要求13所述的计算机程序。
PCT/CN2021/134569 2020-12-28 2021-11-30 控制方法、装置及车辆 WO2022142967A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10250395A (ja) * 1997-01-08 1998-09-22 Nissan Motor Co Ltd ４輪駆動車のトランスファ装置
CN106402371A (zh) * 2015-07-28 2017-02-15 长城汽车股份有限公司 一种分动器的模式切换控制方法、装置及系统
CN106931159A (zh) * 2015-12-29 2017-07-07 长城汽车股份有限公司 一种分动器的模式切换控制方法、装置及系统
CN111791869A (zh) * 2019-10-31 2020-10-20 长城汽车股份有限公司 一种智能四驱控制方法、系统及车辆
CN113236767A (zh) * 2021-05-19 2021-08-10 上汽通用五菱汽车股份有限公司 车辆控制方法、车辆及存储介质

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3579962B2 (ja) * 1995-06-02 2004-10-20 いすゞ自動車株式会社 四輪駆動装置
JP2011246066A (ja) * 2010-05-28 2011-12-08 Toyota Motor Corp 車両の駆動制御装置
CN105370876B (zh) * 2015-11-10 2018-08-28 中国北方车辆研究所 具有高速低速四驱功能的车辆amt换档控制方法
JP2019158075A (ja) * 2018-03-15 2019-09-19 トヨタ自動車株式会社 自動変速機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10250395A (ja) * 1997-01-08 1998-09-22 Nissan Motor Co Ltd ４輪駆動車のトランスファ装置
CN106402371A (zh) * 2015-07-28 2017-02-15 长城汽车股份有限公司 一种分动器的模式切换控制方法、装置及系统
CN106931159A (zh) * 2015-12-29 2017-07-07 长城汽车股份有限公司 一种分动器的模式切换控制方法、装置及系统
CN111791869A (zh) * 2019-10-31 2020-10-20 长城汽车股份有限公司 一种智能四驱控制方法、系统及车辆
CN113236767A (zh) * 2021-05-19 2021-08-10 上汽通用五菱汽车股份有限公司 车辆控制方法、车辆及存储介质

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