WO2022222725A1 - 分动器过热保护方法、装置及终端设备 - Google Patents

分动器过热保护方法、装置及终端设备 Download PDF

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Publication number
WO2022222725A1
WO2022222725A1 PCT/CN2022/084364 CN2022084364W WO2022222725A1 WO 2022222725 A1 WO2022222725 A1 WO 2022222725A1 CN 2022084364 W CN2022084364 W CN 2022084364W WO 2022222725 A1 WO2022222725 A1 WO 2022222725A1
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Prior art keywords
temperature
preset
friction plate
torque
engine
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Application number
PCT/CN2022/084364
Other languages
English (en)
French (fr)
Inventor
王建
Original Assignee
长城汽车股份有限公司
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Publication of WO2022222725A1 publication Critical patent/WO2022222725A1/zh

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Classifications

    • 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
    • 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
    • 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
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08—Interaction between the driver and the control system
    • B60W50/14—Means for informing the driver, warning the driver or prompting a driver intervention
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/72—Features relating to cooling
    • 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
    • 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
    • F16H63/42—Ratio indicator devices

Definitions

  • the present application belongs to the technical field of vehicles, and in particular relates to a transfer case overheating protection method, device and terminal equipment.
  • the transfer case is an important component of the automobile power system. Its main function is to distribute the power to the front and rear drive shafts, and transmit the torque to the four wheels through the final reducer and the drive shaft, thereby realizing four-wheel drive.
  • Common four-wheel drive forms include full-time four-wheel drive, part-time four-wheel drive and timely four-wheel drive.
  • the timely four-wheel drive usually adopts the form of two-wheel drive. When the vehicle senses that the driving wheels are slipping, it will automatically adjust to the four-wheel drive mode, and the whole process does not require human intervention.
  • Timely four-wheel drive usually uses a wet multi-plate clutch.
  • the friction pair of the wet multi-plate clutch is composed of annular dual steel plates and friction plates.
  • the dual steel plates and friction plates are arranged alternately and can be used as the driving end or the driven end.
  • the friction plates are used as the driving end.
  • the driving end is matched with the outer splines of the clutch inner hub connected to the input shaft through the inner splines
  • the driven end is matched with the inner splines of the clutch outer hub connected to the input shaft through the outer splines.
  • the dual steel plates and friction plates produce sliding friction, and the friction heat will be absorbed by the dual steel plates, friction plates and lubricating oil.
  • the friction pair will be Therefore, it is necessary to protect the friction plate set of the wet multi-plate clutch from overheating.
  • FIG. 1 shows the friction plate set 11 , the oil pump 12 , the output shaft 13 , the chain 14 , the oil passage 15 and the outer hub 16 of the friction plate.
  • the friction plate group 11 of the transfer case is lubricated by the oil pump 12 .
  • the inner rotor of the oil pump 12 and the output shaft 13 are connected by positioning pins, the outer casing of the oil pump 13 is fixed with the transfer case, and the oil pump 12 is supplied with oil by the rotation of the output shaft 13 .
  • the oil pump 11 is a one-way rotor pump.
  • the present application provides a transfer case overheating protection method, device and terminal equipment to solve the problem of high ablation risk and easy failure of the friction plate group in the prior art.
  • a first aspect of the present application provides a transfer case overheating protection method, comprising:
  • a first prompt signal is sent to the meter; the first prompt signal is used to instruct the meter to remind the user that the four-wheel drive system is overheated;
  • a second prompt signal is sent to the meter, and after the second preset time period, a torque reduction request is sent to the engine;
  • the second prompt signal is used to instruct the meter to remind the user that the engine torque reduction operation is about to be performed, and the torque reduction request is used to instruct the engine to reduce the output torque.
  • a second aspect of the present application provides a transfer case overheating protection device, characterized in that it includes:
  • the acquisition module is used to acquire the temperature of the friction plate group of the transfer case
  • an overheat alarm module used for sending a first prompt signal to the meter when the temperature of the friction plate group is greater than the preset alarm temperature; the first prompt signal is used to instruct the meter to remind the user that the four-wheel drive system is overheated;
  • the torque reduction module is configured to send a second prompt signal to the meter if the number of times of sending the first prompt signal to the meter exceeds the preset number within the first preset time period, and send the second prompt signal to the engine after the second preset time period has elapsed A torque reduction request is sent; the second prompt signal is used to instruct the meter to remind the user that the engine torque reduction operation is about to be performed, and the torque reduction request is used to instruct the engine to reduce the output torque.
  • a third aspect of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements the transfer described in the first aspect when the processor executes the computer program The steps of the overheating protection method of the device.
  • a fourth aspect of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by one or more processors, the transfer case overheating protection according to the first aspect is implemented steps of the method.
  • the present application has the following beneficial effects: when the temperature of the friction plate group is greater than the preset alarm temperature, that is, when the overheat alarm is triggered, a first prompt signal is sent to the meter to remind the user through the meter, so that the user can According to the prompts, take some measures to reduce the temperature of the friction plate group; if the number of times the first prompt signal is sent to the meter exceeds the preset number of times within the first preset time period, the meter will first inform the user that the engine is about to start for safety reasons.
  • the torque reduction operation can remind the user to prepare in advance, and then after the second preset time period, the engine torque reduction can be carried out, which can reduce the differential speed between the shafts, make the friction plate group effectively dissipate heat, and reduce the risk of ablation of the friction plate group. avoid its failure.
  • Fig. 1 is the structural representation of the transfer case
  • FIG. 2 is a schematic flowchart of the implementation of a transfer case overheating protection method provided by an embodiment of the present application
  • FIG. 3 is a schematic block diagram of a transfer case overheating protection device provided by an embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an implementation flow of a transfer case overheating protection method provided by an embodiment of the present application. For convenience of description, only parts related to the embodiment of the present application are shown.
  • the execution body of the embodiment of the present application may be a terminal device, and the terminal device may be a transfer case control unit.
  • the method may include the following steps:
  • the temperature of the friction plate group of the transfer case can be acquired in real time, or the temperature of the friction plate group can be acquired at preset time intervals, for example, every 10 seconds, 30 seconds, etc. make restrictions.
  • the temperature of the friction plate group can be measured by a temperature measuring device, and the temperature of the friction plate group can also be calculated by other methods.
  • the above S201 may include the following steps:
  • the temperature of the friction disc pack of the transfer case is determined according to the wheel speed, the outdoor temperature and the output torque of the engine.
  • the wheel speeds of the four wheels can be obtained through the body electronic stability system
  • the outdoor temperature can be obtained through the temperature sensor of the air conditioner
  • the output torque of the engine can be obtained through the engine control unit
  • the friction of the transfer case can be calculated by the existing method through the obtained parameters. temperature of the tablet.
  • the gear position can also be obtained through the transmission control unit, and the temperature of the friction plate set can be calculated by using the existing method according to the gear position, wheel speed, outdoor temperature and engine output torque.
  • the vehicle flameout duration can also be obtained through the body controller, and the temperature of the friction plate group can be calculated by using the existing method according to the vehicle flameout duration, gear position, wheel speed, outdoor temperature and engine output torque .
  • an overheating alarm is triggered, and a first prompt signal is sent to the meter at this time.
  • the meter reminds the user that the four-wheel drive system is overheated according to the first prompt signal, so as to remind the user to take appropriate measures to reduce the temperature of the friction plate group.
  • the gauge can display the message "AWD system overheated" to alert the user.
  • the preset alarm temperature can be obtained by calibration according to the vehicle characteristics and the vehicle type positioning, and no specific limitation is made here.
  • S203 If the number of times of sending the first prompt signal to the meter exceeds the preset number within the first preset time period, send a second prompt signal to the meter, and after the second preset time period has elapsed, send a torque reduction request to the engine ;
  • the second prompt signal is used to instruct the meter to remind the user that the engine torque reduction operation is about to be performed, and the torque reduction request is used to instruct the engine to reduce the output torque.
  • the overheating alarm may be triggered multiple times in a short period of time, that is, the temperature of the friction plate group is greater than the preset alarm temperature. , and send the first prompt signal to the instrument every time. Therefore, when the overheat alarm is triggered for the first time, that is, when the first prompt signal is sent to the meter for the first time, the count starts to record the number of times the first prompt signal is sent to the meter.
  • the meter reminds the user that the engine torque reduction operation is about to be performed. For example, it can display the information of "for effective cooling, temporarily reduce the output torque of the engine", and can remind the user before reducing the torque, so that the user has psychological expectations.
  • a torque reduction request is sent to the engine, and the engine reduces the output torque according to the torque reduction request.
  • a torque reduction request may be sent to the engine control unit, and the engine control unit controls the engine to reduce the output torque.
  • a preset torque value may be decreased, and the preset torque value may be set according to actual demand.
  • the first preset duration, the second preset duration and the preset number of times can be set according to actual needs.
  • the first preset duration can be 5 minutes
  • the second preset duration can be 3-5 seconds
  • the preset number of times Can be 3 times.
  • the embodiment of the present application determines whether to trigger an overheating alarm by monitoring the temperature of the friction plate group, and when an overheating alarm is triggered, a first prompt signal is sent to the meter, and the meter is used to remind the user, so that the user can take some measures according to the prompt to reduce the temperature.
  • the temperature of the friction plate group if the number of times the first prompt signal is sent to the meter exceeds the preset number of times within the first preset time period, for safety reasons, the meter will first inform the user that the engine torque reduction operation is about to be performed, so as to remind the user
  • the user prepares in advance, and then after the second preset period of time, the engine torque is reduced, which can reduce the differential speed between the shafts, so that the friction plate group can effectively dissipate heat, which can reduce the risk of ablation of the friction plate group and avoid its failure.
  • the foregoing transfer case overheating protection method may further include:
  • a torque recovery request is sent to the engine; the torque recovery request is used to instruct the engine to restore the output torque to the torque before the reduction;
  • the torque reduction request is continued to be sent to the engine until the current temperature of the friction plate set is lower than the preset safety temperature.
  • the temperature of the friction plate group may be monitored in real time to obtain the current temperature, and if the temperature of the friction plate group falls below the preset safe temperature, the output torque of the engine may be restored to the reduced output torque
  • the previous torque value can also restore the output torque of the engine to the preset output torque, and so on. If the temperature of the friction plate group has not dropped below the preset safety temperature, continue to send a torque reduction request to the engine, so that the engine continues to reduce the output torque until the temperature of the friction plate group is lower than the preset safety temperature.
  • the preset safe temperature can be set according to actual needs, for example, it can be 60°C.
  • the preset safety temperature is less than the preset alarm temperature.
  • the above-mentioned transfer case overheating protection method may further include:
  • an early warning signal is sent to the instrument; the early warning signal is used to instruct the instrument to display the warning information;
  • an alarm signal will be continuously sent to the meter, and a torque break request will be sent to the engine; the alarm signal is used to instruct the meter to remind the user that the output torque of the engine is about to be cut off, and the torque break request is used for Instructs the engine to cut off the output torque.
  • the oil pump is a one-way rotor pump
  • the D gear of the vehicle can lubricate the friction plate group, but the R gear can only rely on the chain churning oil for splash lubrication. Therefore, it is necessary to distinguish the overheat protection strategy of the R gear from the D gear, using the R gear and the D gear.
  • Different overheat protection strategies are used in D gear. Among them, the R gear is the reverse gear of the vehicle, and the D gear is the forward gear of the vehicle. If the vehicle uses the R gear for a long time when the vehicle is out of trouble, it is easy to cause the temperature of the friction plate group to rise sharply due to poor cooling, resulting in ablation of the friction plate group.
  • the embodiment of the present application firstly determines whether the current gear is in the R gear. If it is not in the R gear, the transfer case overheating protection can be performed according to S202-S203. If it is in R gear, another strategy is used for overheating protection.
  • the torque loading of the transfer case is relatively aggressive, and the torque loading coefficient is increased by 1.3-1.5 times compared with the normal calibration loading coefficient, so that the pressing force of the friction plate group is larger and the slipping of the friction plate group is suppressed.
  • the torque output is 300N ⁇ m
  • the torque output is 450N ⁇ m
  • N ⁇ m is the international unit of torque.
  • an early warning signal is sent to the instrument.
  • the instrument displays the warning signal and displays the warning information.
  • the early warning information may be "the temperature of the transfer case is too high, the four-wheel drive function will be reduced", etc., to achieve the purpose of reminding the user.
  • the temperature of the friction plate group will continue to rise, and when it reaches the second preset temperature, an alarm signal will be continuously sent to the instrument.
  • the meter reminds the user that the output torque of the engine is about to be disconnected according to the alarm signal, for example, it can display information such as "the four-wheel drive function is temporarily reduced”.
  • a torque-off request is sent to the engine.
  • the engine cuts off the output torque according to the torque cut request, for example, the output torque can be reduced to 0, the input torque to the transfer case can also be cut off, and so on.
  • the first preset temperature may be 60% of the limit temperature of the friction plate group
  • the second preset temperature may be 80% of the limit temperature of the friction plate group.
  • it can also be set according to the actual situation.
  • the torque-off request is sent to the engine.
  • a torque reduction request may be sent to the engine to reduce the output torque of the engine.
  • a preset number of torque reduction requests may be sent to the engine, so that the engine reduces the output torque multiple times, and after each reduction of the output torque, the friction disc set is judged. Whether the temperature drops below the second preset temperature, if the temperature of the friction plate group does not drop below the second preset temperature after sending a preset number of torque reduction requests, a torque break request is sent to the engine.
  • the embodiment of the present application formulates a separate four-wheel drive system overheat protection strategy for reverse gear by monitoring the reverse gear signal, so as to reduce the hardware ablation caused by poor lubrication caused by the oil pump not pumping oil when the vehicle is in the reverse gear state. risks of.
  • the method before comparing the temperature of the friction plate group, the first preset temperature and the second preset temperature, the method further includes:
  • the preset value is greater than 1.
  • the preset value may be 1.5.
  • the torque output coefficient of the friction disc set can be increased to the preset value; for non-off-road vehicles, the torque output coefficient of the friction disc set can not be increased to the preset value and work in two-wheel drive mode.
  • the torque loading of the transfer case can be made more aggressive, and the slippage of the friction plate set can be suppressed.
  • the method further includes:
  • the engine disconnects the output torque.
  • the friction plate group starts to dissipate heat.
  • the timing starts, that is, the heat dissipation time is recorded.
  • the heat dissipation time reaches the preset calibration time, it stops sending an alarm signal to the instrument. , the user can use the vehicle normally again.
  • the heat dissipation time does not reach the preset calibration time, it will continue to send an alarm signal to the meter.
  • the preset calibration time length is a pre-calibrated heat dissipation time length.
  • the temperature of the friction plate group can be reduced to a safe temperature.
  • it is also possible to determine whether to stop sending an alarm signal by monitoring whether the temperature of the friction plate group is lowered to a safe temperature.
  • the embodiment of the present application can effectively reduce the risk of ablation of the transfer case friction plate group by adjusting the torque loading and overheating warning strategy without changing the hardware design, prevent its failure, make the four-wheel drive more reliable, and reduce the cost of modification.
  • the cycle is short; by adding a pre-reminder on the meter, users can have psychological expectations and take countermeasures in advance to reduce the risk of extreme off-road vehicles overturning.
  • FIG. 3 is a schematic block diagram of a transfer case overheating protection device provided by an embodiment of the present application. For convenience of description, only parts related to the embodiment of the present application are shown.
  • the transfer case overheat protection device 30 may include an acquisition module 301 , an overheat alarm module 302 and a torque reduction module 303 .
  • the acquisition module 301 is used to acquire the temperature of the friction plate group of the transfer case.
  • the overheat alarm module 302 is used to send a first prompt signal to the meter when the temperature of the friction plate group is greater than the preset alarm temperature; the first prompt signal is used to instruct the meter to remind the user that the four-wheel drive system is overheated.
  • the torque reduction module 303 is configured to send a second prompt signal to the meter if the number of times of sending the first prompt signal to the meter exceeds the preset number of times within the first preset time period, and send a second prompt signal to the meter after the second preset time period elapses.
  • the engine sends a torque reduction request; the second prompt signal is used to instruct the meter to remind the user that the engine torque reduction operation is about to be performed, and the torque reduction request is used to instruct the engine to reduce the output torque.
  • the transfer case overheating protection device 30 further includes: a reverse gear protection module.
  • the reverse gear protection module is used to:
  • an early warning signal is sent to the instrument; the early warning signal is used to instruct the instrument to display the warning information;
  • an alarm signal will be continuously sent to the meter, and a torque break request will be sent to the engine; the alarm signal is used to instruct the meter to remind the user that the output torque of the engine is about to be cut off, and the torque break request is used for Instructs the engine to cut off the output torque.
  • the reverse gear protection module can also be used for:
  • the torque output coefficient of the friction plate group is increased to a preset value; the preset value is greater than 1.
  • the reverse gear protection module can also be used for:
  • the torque reduction module 303 can also be used for:
  • a torque recovery request is sent to the engine; the torque recovery request is used to instruct the engine to restore the output torque to the torque before the reduction;
  • the torque reduction request is continued to be sent to the engine until the current temperature of the friction plate set is lower than the preset safety temperature.
  • the obtaining module 301 may also be used for:
  • the temperature of the friction disc pack of the transfer case is determined according to the wheel speed, the outdoor temperature and the output torque of the engine.
  • FIG. 4 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 40 in this embodiment includes: one or more processors 401 , a memory 402 , and a computer program 403 stored in the memory 402 and executable on the processor 401 .
  • the processor 401 executes the computer program 403
  • the steps in each of the above-mentioned embodiments of the transfer case overheat protection method are implemented, for example, steps S201 to S203 shown in FIG. 2 .
  • the processor 401 executes the computer program 403
  • the functions of the modules/units in the above embodiments of the transfer case overheating protection device are implemented, for example, the functions of the modules 301 to 303 shown in FIG. 3 .
  • the computer program 403 may be divided into one or more modules/units, and the one or more modules/units are stored in the memory 402 and executed by the processor 401 to complete the this application.
  • the one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program 403 in the terminal device 40 .
  • the computer program 403 can be divided into an acquisition module, an overheat alarm module and a torque reduction module, and the specific functions of each module are as follows:
  • the acquisition module is used to acquire the temperature of the friction plate group of the transfer case
  • an overheat alarm module used for sending a first prompt signal to the meter when the temperature of the friction plate group is greater than the preset alarm temperature; the first prompt signal is used to instruct the meter to remind the user that the four-wheel drive system is overheated;
  • the torque reduction module is configured to send a second prompt signal to the meter if the number of times of sending the first prompt signal to the meter exceeds the preset number within the first preset time period, and send the second prompt signal to the engine after the second preset time period has elapsed A torque reduction request is sent; the second prompt signal is used to instruct the meter to remind the user that the engine torque reduction operation is about to be performed, and the torque reduction request is used to instruct the engine to reduce the output torque.
  • the terminal device 40 may be the above-mentioned transfer case control unit, or may be a computing device such as a desktop computer, a notebook computer, a palmtop computer, and a cloud server.
  • the terminal device 40 includes but is not limited to a processor 401 and a memory 402 .
  • FIG. 4 is only an example of the terminal device 40, and does not constitute a limitation on the terminal device 40. It may include more or less components than the one shown, or combine some components, or different Components, for example, the terminal device 40 may also include input devices, output devices, network access devices, buses, and the like.
  • the processor 401 may be a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), application specific integrated circuits (Application Specific Integrated Circuits, ASICs), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • CPU Central Processing Unit
  • DSPs Digital Signal Processors
  • ASICs Application Specific Integrated Circuits
  • FPGA Field-Programmable Gate Array
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory 402 may be an internal storage unit of the terminal device 40 , such as a hard disk or a memory of the terminal device 40 .
  • the memory 402 may also be an external storage device of the terminal device 40, such as a plug-in hard disk equipped on the terminal device 40, a smart memory card (Smart Memory Card). Media Card, SMC), Secure Digital (SD) card, Flash Card (Flash Card), etc.
  • the memory 402 may also include both an internal storage unit of the terminal device 40 and an external storage device.
  • the memory 402 is used to store the computer program 403 and other programs and data required by the terminal device 40 .
  • the memory 402 may also be used to temporarily store data that has been output or will be output.
  • the disclosed device and method for overheating protection of a transfer case may be implemented in other ways.
  • the embodiments of the transfer case overheating protection device described above are only illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple divisions. Individual units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated modules/units if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • this application can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium.
  • the computer program When executed by a processor, the steps of each of the above method embodiments can be implemented.
  • the computer program includes computer program code
  • the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like.
  • the computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, removable hard disk, magnetic disk, optical disk, computer memory, read-only memory (Read-Only Memory, ROM) , Random Access Memory (Random Access Memory, RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable media Excluded are electrical carrier signals and telecommunication signals.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

一种分动器过热保护方法，包括：获取分动器的摩擦片组（11）的温度（S201）；当摩擦片组（11）的温度大于预设报警温度时，向仪表发送第一提示信号；第一提示信号用于指示仪表提醒用户四驱系统过热（S202）；若在第一预设时长内，向仪表发送第一提示信号的次数超过预设次数，则向仪表发送第二提示信号，并在经过第二预设时长后，向发动机发送降扭请求；第二提示信号用于指示仪表提醒用户即将进行发动机降扭操作，降扭请求用于指示发动机降低输出扭矩（S203）。还提供了一种分动器过热保护装置。本申请的分动器过热保护方法可以降低轴间差速，使摩擦片组有效散热，能够降低摩擦片组烧蚀风险，避免其失效。

Description

分动器过热保护方法、装置及终端设备
本专利申请要求于2021年4月19日提交的中国专利申请No.CN202110420030.8的优先权。在先申请的公开内容通过整体引用并入本申请。
技术领域
本申请属于车辆技术领域，尤其涉及一种分动器过热保护方法、装置及终端设备。
 背景技术
分动器是汽车动力系统的重要组件，它的主要作用是将动力分配到前、后传动轴，通过主减速器、驱动轴将扭矩传递至4个车轮，从而实现四轮驱动。常见的四驱形式包括全时四驱、分时四驱和适时四驱。其中，适时四驱通常采用两轮驱动的形式，当车辆感应到驱动轮打滑时，会自动调整到四轮驱动模式，并且整个过程无需人为介入。
适时四驱通常采用湿式多片离合器。湿式多片离合器摩擦副由环形对偶钢片和摩擦片组成，对偶钢片和摩擦片相间布置，均可作为主动端或从动端，一般摩擦片作为主动端。主动端通过内花键与连接输入轴的离合器内毂外花键配合，从动端通过外花键与连接输入轴的离合器外毂内花键配合。湿式多片离合器中对偶钢片和摩擦片产生滑动摩擦，摩擦热将被对偶钢片、摩擦片及润滑油吸收，当摩擦副表面的温度高于摩擦副所设计的最高温度值时，摩擦副将失效，因此有必要对湿式多片离合器的摩擦片组进行过热保护。
参见图1，图1示出了摩擦片组11、油泵12、输出轴13、链条14、油道15和摩擦片外毂16。分动器的摩擦片组11通过油泵12进行润滑。油泵12内转子与输出轴13通过定位销连接，油泵13外壳体与分动器壳体固定，通过输出轴13转动实现油泵12供油。其中，油泵11为单向转子泵。
目前，在摩擦片组温度过高时，摩擦片组扭矩断开加载电流，但是，由于摩擦片组存在拖曳扭矩，如果车辆不停止，仍长时间进行脱困及轴间差速较大操作，将导致摩擦片组持续升温，导致摩擦片组烧蚀风险较高，容易失效。
 技术问题
有鉴于此，本申请提供了一种分动器过热保护方法、装置及终端设备，以解决现有技术摩擦片组烧蚀风险较高，容易失效的问题。
 技术解决方案
本申请的第一方面提供了一种分动器过热保护方法，包括：
获取分动器的摩擦片组的温度；
当摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号；第一提示信号用于指示仪表提醒用户四驱系统过热；
若在第一预设时长内，向仪表发送第一提示信号的次数超过预设次数，则向仪表发送第二提示信号，并在经过第二预设时长后，向发动机发送降扭请求；第二提示信号用于指示仪表提醒用户即将进行发动机降扭操作，降扭请求用于指示发动机降低输出扭矩。
本申请的第二方面提供了一种分动器过热保护装置，其特征在于，包括：
获取模块，用于获取分动器的摩擦片组的温度；
过热报警模块，用于当摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号；第一提示信号用于指示仪表提醒用户四驱系统过热；以及，
降扭模块，用于若在第一预设时长内，向仪表发送第一提示信号的次数超过预设次数，则向仪表发送第二提示信号，并在经过第二预设时长后，向发动机发送降扭请求；第二提示信号用于指示仪表提醒用户即将进行发动机降扭操作，降扭请求用于指示发动机降低输出扭矩。
本申请的第三方面提供了一种终端设备，包括存储器、处理器以及存储在存储器中并可在处理器上运行的计算机程序，处理器执行计算机程序时实现如第一方面所述的分动器过热保护方法的步骤。
本申请的第四方面提供了一种计算机可读存储介质，计算机可读存储介质存储有计算机程序，计算机程序被一个或多个处理器执行时实现如第一方面所述的分动器过热保护方法的步骤。
 有益效果
本申请与现有技术相比存在的有益效果是：本申请在摩擦片组的温度大于预设报警温度，即触发过热报警时，向仪表发送第一提示信号，通过仪表提醒用户，从而用户可以根据提示采取一些措施，降低摩擦片组的温度；若在第一预设时长内，向仪表发送第一提示信号的次数超过预设次数，则出于安全考虑，首先通过仪表告知用户即将进行发动机降扭操作，从而可以提醒用户提前做好准备，然后经过第二预设时长后，进行发动机降扭，可以降低轴间差速，使摩擦片组有效散热，能够降低摩擦片组烧蚀风险，避免其失效。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是分动器的结构示意图；
图2是本申请一实施例提供的分动器过热保护方法的实现流程示意图；
图3是本申请一实施例提供的分动器过热保护装置的示意框图；
图4是本申请一实施例提供的终端设备的示意框图。
本申请的实施方式
以下描述中，为了说明而不是为了限定，提出了诸如特定系统结构、技术之类的具体细节，以便透彻理解本申请实施例。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施例中也可以实现本申请。在其它情况中，省略对众所周知的系统、装置、电路以及方法的详细说明，以免不必要的细节妨碍本申请的描述。
为了说明本申请所述的技术方案，下面通过具体实施例来进行说明。
图2是本申请一实施例提供的分动器过热保护方法的实现流程示意图，为了便于说明，仅示出了与本申请实施例相关的部分。本申请实施例的执行主体可以是终端设备，该终端设备可以是分动器控制单元。
如图2所示，该方法可以包括以下步骤：
S201：获取分动器的摩擦片组的温度。
在本申请实施例中，可以实时获取分动器的摩擦片组的温度，也可以每隔预设时间获取一次摩擦片组的温度，例如，每隔10秒、30秒等等，对此不做限制。
其中，可以通过温度测量装置测量得到摩擦片组的温度，也可以通过其他方法计算得到摩擦片组的温度。
在本申请的一个实施例中，上述S201可以包括以下步骤：
获取车轮轮速、室外温度和发动机输出扭矩；
根据车轮轮速、室外温度和发动机输出扭矩确定分动器的摩擦片组的温度。
具体地，可以通过车身电子稳定系统获取四个车轮的轮速，通过空调温度传感器获取室外温度，通过发动机控制单元获取发动机输出扭矩，并通过获取的参数，采用现有方法计算分动器的摩擦片组的温度。
作为本申请的另一实施例，还可以通过变速器控制单元获取档位，根据档位、车轮轮速、室外温度和发动机输出扭矩，采用现有方法计算得到摩擦片组的温度。
作为本申请的又一实施例，还可以通过车身控制器获取车辆熄火时长，根据车辆熄火时长、档位、车轮轮速、室外温度和发动机输出扭矩，采用现有方法计算得到摩擦片组的温度。
S202：当摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号；第一提示信号用于指示仪表提醒用户四驱系统过热。
在本申请实施例中，当检测到摩擦片组的温度大于预设报警温度时，就触发过热报警，此时向仪表发送第一提示信号。仪表根据第一提示信号提醒用户四驱系统过热，以便提醒用户采取适当的措施以降低摩擦片组的温度。例如，仪表可以显示“四驱系统过热”的信息，以达到提醒用户的目的。
其中，预设报警温度可根据车辆特点及车型定位进行标定得到，在此不做具体限制。
S203：若在第一预设时长内，向仪表发送第一提示信号的次数超过预设次数，则向仪表发送第二提示信号，并在经过第二预设时长后，向发动机发送降扭请求；第二提示信号用于指示仪表提醒用户即将进行发动机降扭操作，降扭请求用于指示发动机降低输出扭矩。
在发送第一提示信号后，若用户继续进行较大轴间差速的工况越野，可能在短时间内多次触发过热报警，即摩擦片组的温度大于预设报警温度的情况出现多次，每次均向仪表发送第一提示信号。因此，当首次触发过热报警，即首次向仪表发送第一提示信号时，开始计数，记录向仪表发送第一提示信号的次数。若在短时间内，即第一预设时长内，向仪表发送第一提示信号的次数过多，即超过预设次数，则向仪表发送第二提示信号。仪表根据第二提示信号提醒用户即将进行发动机降扭操作，例如，可以显示“为有效进行降温，暂时降低发动机输出扭矩”的信息，可以在降低扭矩之前提醒用户，使用户有心理预期。
在发送第二提示信号后，经过第二预设时长，向发动机发送降扭请求，发动机根据降扭请求降低输出扭矩。具体可以是向发动机控制单元发送降扭请求，发动机控制单元控制发动机降低输出扭矩。示例性地，每次降低输出扭矩可以降低预设扭矩值，预设扭矩值可以根据实际需求设置。
其中，第一预设时长、第二预设时长和预设次数可以根据实际需求设置，例如，第一预设时长可以是5分钟，第二预设时长可以是3-5秒，预设次数可以是3次。
由上述描述可知，本申请实施例通过监测摩擦片组温度确定是否触发过热报警，在触发过热报警时，向仪表发送第一提示信号，通过仪表提醒用户，从而用户可以根据提示采取一些措施，降低摩擦片组的温度；若在第一预设时长内，向仪表发送第一提示信号的次数超过预设次数，则出于安全考虑，首先通过仪表告知用户即将进行发动机降扭操作，从而可以提醒用户提前做好准备，然后经过第二预设时长后，进行发动机降扭，可以降低轴间差速，使摩擦片组有效散热，能够降低摩擦片组烧蚀风险，避免其失效。
在本申请的一个实施例中，在上述S203之后，上述分动器过热保护方法还可以包括：
持续监测摩擦片组的温度；
若当前摩擦片组的温度小于预设安全温度，则向发动机发送扭矩恢复请求；扭矩恢复请求用于指示发动机将输出扭矩恢复至降低之前的扭矩；
若当前摩擦片组的温度不小于预设安全温度，则继续向发动机发送降扭请求，直至当前摩擦片组的温度小于预设安全温度。
在本申请实施例中，摩擦片组的温度可以是实时监测的，以获得当前的温度，若摩擦片组的温度降至预设安全温度以下，则可以将发动机的输出扭矩恢复至输出扭矩降低之前的扭矩值，当然，也可以将发动机的输出扭矩恢复至预设输出扭矩，等等。若摩擦片组的温度仍未降至预设安全温度以下，则继续向发动机发送降扭请求，使发动机继续降低输出扭矩，直至摩擦片组的温度小于预设安全温度。
其中，预设安全温度可以根据实际需求设置，例如可以是60℃。预设安全温度小于预设报警温度。
在本申请的一个实施例中，在上述S202之前，上述分动器过热保护方法还可以包括：
确定当前挡位是否处于R挡；
若当前挡位未处于R挡，则继续执行当摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号的步骤；
若当前挡位处于R挡，则将摩擦片组的温度、第一预设温度和第二预设温度进行比较；
若摩擦片组的温度大于第一预设温度且不大于第二预设温度，则向仪表发送预警信号；预警信号用于指示仪表显示预警信息；
若摩擦片组的温度大于第二预设温度，则向仪表持续发送报警信号，并向发动机发送断扭请求；报警信号用于指示仪表提醒用户即将断开发动机的输出扭矩，断扭请求用于指示发动机断开输出扭矩。
由于油泵是单向转子泵，车辆D挡可以润滑摩擦片组，但是R挡仅能依靠链条搅油进行飞溅润滑，因此，需要将R挡与D挡的过热保护策略区分开，使用R挡和D挡时采用不同的过热保护策略。其中，R挡为车辆的倒挡，D挡为车辆的前进挡。若车辆在脱困时，长时间使用R挡，容易因降温不良导致摩擦片组的温度急剧上升，导致摩擦片组烧蚀。
因此，本申请实施例首先判断当前档位是否处于R挡。若未处于R挡，则可以根据S202-S203进行分动器过热保护。若处于R挡，则采用另外的策略进行过热保护。
具体地，当车辆处于R挡时，分动器扭矩加载相对激进一些，扭矩加载系数较正常标定加载系数提升1.3-1.5倍，使摩擦片组压紧力更大，抑制摩擦片组打滑。例如，正常加载时，扭矩输出为300N·m，在R档模式下扭矩输出为450N·m，N·m为扭矩的国际单位。
当车辆倒车脱困时，摩擦片组的温度达到第一预设温度时，向仪表发送预警信号。仪表显示预警信号显示预警信息。示例性地，预警信息可以是“分动器温度过高，四驱功能将降低”等，达到提醒用户的目的。
若用户继续进行较大轴间差速的工况越野，摩擦片组的温度将继续升高，当其达到第二预设温度时，向仪表持续发送报警信号。仪表根据报警信号提醒用户即将断开发动机的输出扭矩，例如，可以显示“四驱功能暂时降低”等信息。同时，向发动机发送断扭请求。发动机根据断扭请求断开输出扭矩，例如，可以将输出扭矩降为0，也可以断开对分动器的输入扭矩，等。
其中，第一预设温度可以是摩擦片组的极限温度的60%，第二预设温度可以是摩擦片组的极限温度的80%。当然，也可以根据实际情况进行设定。
作为一个可选的实施例，在向仪表开始发送报警信号后，经过第二预设时长后，再向发动机发送断扭请求。
作为一个可选的实施例，在向仪表发送预警信号后，可以向发动机发送降扭请求，以降低发动机输出扭矩。
作为一个可选的实施例，在向发动机发送断扭请求之前，可以向发动机发送预设次数的降扭请求，使发动机多次降低输出扭矩，并在每次降低输出扭矩后判断摩擦片组的温度是否降低至第二预设温度以下，若在发送预设次数的降扭请求后，摩擦片组的温度仍未降低至第二预设温度以下，则向发动机发送断扭请求。
由上述描述可知，本申请实施例通过监测倒挡信号，针对倒挡，制定单独的四驱系统过热保护策略，降低因车辆处于倒挡状态时，油泵不泵油导致润滑不良进而造成硬件烧蚀的风险。
在本申请的一个实施例中，在将摩擦片组的温度、第一预设温度和第二预设温度进行比较之前，还包括：
将摩擦片组的扭矩输出系数调高至预设值；预设值大于1。
其中，预设值可以是1.5。
对于越野车，可以将摩擦片组的扭矩输出系数调高至预设值；对于非越野车，可以不将摩擦片组的扭矩输出系数调高至预设值，并工作在两驱模式。
通过提高摩擦片组的扭矩输出系数，可以使分动器扭矩加载更加激进，抑制摩擦片组打滑。
在本申请的一个实施例中，在向发动机发送断扭请求之后，还包括：
开始记录散热时长；
当散热时长大于预设标定时长时，停止向仪表发送报警信号。
在向发动机发送断扭请求之后，发动机断开输出扭矩，此时，摩擦片组开始散热，此时开始计时，即记录散热时长，当散热时长达到预设标定时长时，停止向仪表发送报警信号，用户可以再次正常使用车辆。当散热时长未达到预设标定时长时，持续向仪表发送报警信号。
其中，预设标定时长为预先标定的散热时长。当散热时长达到预设标定时长时，摩擦片组的温度可以降低至安全温度。当然，也可以通过监测摩擦片组的温度是否降低至安全温度，确定是否停止发送报警信号。
本申请实施例可以在不更改硬件设计的前提下，通过调整扭矩加载及过热预警策略，有效降低分动器摩擦片组烧蚀的风险，防止其失效，使四驱更可靠，更改成本低，周期短；通过增加仪表预先提醒，使用户有心理预期，提前采取应对措施，降低极限越野车辆翻车风险。
应理解，上述实施例中各步骤的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
对应于上述分动器过热保护方法，本申请一实施例还提供了一种分动器过热保护装置，具有与上述分动器过热保护方法同样的有益效果。图3是本申请一实施例提供的分动器过热保护装置的示意框图，为了便于说明，仅示出与本申请实施例相关的部分。
在本申请实施例中，分动器过热保护装置30可以包括获取模块301、过热报警模块302和降扭模块303。
其中，获取模块301，用于获取分动器的摩擦片组的温度。
过热报警模块302，用于当摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号；第一提示信号用于指示仪表提醒用户四驱系统过热。
降扭模块303，用于若在第一预设时长内，向仪表发送第一提示信号的次数超过预设次数，则向仪表发送第二提示信号，并在经过第二预设时长后，向发动机发送降扭请求；第二提示信号用于指示仪表提醒用户即将进行发动机降扭操作，降扭请求用于指示发动机降低输出扭矩。
在本申请的一个实施例中，分动器过热保护装置30还包括：倒挡保护模块。
倒挡保护模块用于：
确定当前挡位是否处于R挡；
若当前挡位未处于R挡，则继续执行当摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号的步骤；
若当前挡位处于R挡，则将摩擦片组的温度、第一预设温度和第二预设温度进行比较；
若摩擦片组的温度大于第一预设温度且不大于第二预设温度，则向仪表发送预警信号；预警信号用于指示仪表显示预警信息；
若摩擦片组的温度大于第二预设温度，则向仪表持续发送报警信号，并向发动机发送断扭请求；报警信号用于指示仪表提醒用户即将断开发动机的输出扭矩，断扭请求用于指示发动机断开输出扭矩。
在本申请的一个实施例中，倒挡保护模块还可以用于：
在将摩擦片组的温度、第一预设温度和第二预设温度进行比较之前，将摩擦片组的扭矩输出系数调高至预设值；预设值大于1。
在本申请的一个实施例中，倒挡保护模块还可以用于：
在向发动机发送断扭请求之后，开始记录散热时长；
当散热时长大于预设标定时长时，停止向仪表发送报警信号。
在本申请的一个实施例中，降扭模块303还可以用于：
在向发动机发送降扭请求之后，持续监测摩擦片组的温度；
若当前摩擦片组的温度小于预设安全温度，则向发动机发送扭矩恢复请求；扭矩恢复请求用于指示发动机将输出扭矩恢复至降低之前的扭矩；
若当前摩擦片组的温度不小于预设安全温度，则继续向发动机发送降扭请求，直至当前摩擦片组的温度小于预设安全温度。
在本申请的一个实施例中，获取模块301还可以用于：
获取车轮轮速、室外温度和发动机输出扭矩；
根据车轮轮速、室外温度和发动机输出扭矩确定分动器的摩擦片组的温度。
可以理解的是，上述分动器过热保护装置和上述分动器过热保护方法中的技术手段、技术效果是对应关系，在分动器过热保护装置中没有记载的内容可以从分动器过热保护方法中得出，应当被认为是已经明确记载在说明书中。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，仅以上述各功能单元、模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能单元、模块完成，即将所述分动器过热保护装置的内部结构划分成不同的功能单元或模块，以完成以上描述的全部或者部分功能。实施例中的各功能单元、模块可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中，上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。另外，各功能单元、模块的具体名称也只是为了便于相互区分，并不用于限制本申请的保护范围。上述装置中单元、模块的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
图4是本申请一实施例提供的终端设备的示意框图。如图4所示，该实施例的终端设备40包括：一个或多个处理器401、存储器402以及存储在所述存储器402中并可在所述处理器401上运行的计算机程序403。所述处理器401执行所述计算机程序403时实现上述各个分动器过热保护方法实施例中的步骤，例如图2所示的步骤S201至S203。或者，所述处理器401执行所述计算机程序403时实现上述分动器过热保护装置实施例中各模块/单元的功能，例如图3所示模块301至303的功能。
示例性地，所述计算机程序403可以被分割成一个或多个模块/单元，所述一个或者多个模块/单元被存储在所述存储器402中，并由所述处理器401执行，以完成本申请。所述一个或多个模块/单元可以是能够完成特定功能的一系列计算机程序指令段，该指令段用于描述所述计算机程序403在所述终端设备40中的执行过程。例如，所述计算机程序403可以被分割成获取模块、过热报警模块和降扭模块，各模块具体功能如下：
获取模块，用于获取分动器的摩擦片组的温度；
过热报警模块，用于当摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号；第一提示信号用于指示仪表提醒用户四驱系统过热；以及，
降扭模块，用于若在第一预设时长内，向仪表发送第一提示信号的次数超过预设次数，则向仪表发送第二提示信号，并在经过第二预设时长后，向发动机发送降扭请求；第二提示信号用于指示仪表提醒用户即将进行发动机降扭操作，降扭请求用于指示发动机降低输出扭矩。
其它模块或者单元可参照图3所示的实施例中的描述，在此不再赘述。
所述终端设备40可以是上述分动器控制单元，也可以是桌上型计算机、笔记本、掌上电脑及云端服务器等计算设备。所述终端设备40包括但不仅限于处理器401、存储器402。本领域技术人员可以理解，图4仅仅是终端设备40的一个示例，并不构成对终端设备40的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件，例如所述终端设备40还可以包括输入设备、输出设备、网络接入设备、总线等。
所述处理器401可以是中央处理单元(Central Processing Unit，CPU)，还可以是其他通用处理器、数字信号处理器 (Digital Signal Processor，DSP)、专用集成电路 (Application Specific Integrated Circuit，ASIC)、现场可编程门阵列 (Field-Programmable Gate Array，FPGA) 或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
所述存储器402可以是所述终端设备40的内部存储单元，例如终端设备40的硬盘或内存。所述存储器402也可以是所述终端设备40的外部存储设备，例如所述终端设备40上配备的插接式硬盘，智能存储卡（Smart Media Card, SMC），安全数字（Secure Digital, SD）卡，闪存卡（Flash Card）等。进一步地，所述存储器402还可以既包括终端设备40的内部存储单元，也包括外部存储设备。所述存储器402用于存储所述计算机程序403以及所述终端设备40所需的其他程序和数据。所述存储器402还可以用于暂时地存储已经输出或者将要输出的数据。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述或记载的部分，可以参见其它实施例的相关描述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的实施例中，应该理解到，所揭露的分动器过热保护装置和方法，可以通过其它的方式实现。例如，以上所描述的分动器过热保护装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通讯连接可以是通过一些接口，装置或单元的间接耦合或通讯连接，可以是电性，机械或其它的形式。
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单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的模块/单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请实现上述实施例方法中的全部或部分流程，也可以通过计算机程序来指令相关的硬件来完成，所述计算机程序可存储于一计算机可读存储介质中，该计算机程序在被处理器执行时，可实现上述各个方法实施例的步骤。其中，所述计算机程序包括计算机程序代码，所述计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。所述计算机可读介质可以包括：能够携带所述计算机程序代码的任何实体或装置、记录介质、U盘、移动硬盘、磁碟、光盘、计算机存储器、只读存储器（Read-Only Memory，ROM）、随机存取存储器（Random Access Memory，RAM）、电载波信号、电信信号以及软件分发介质等。需要说明的是，所述计算机可读介质包含的内容可以根据司法管辖区内立法和专利实践的要求进行适当的增减，例如在某些司法管辖区，根据立法和专利实践，计算机可读介质不包括是电载波信号和电信信号。
以上所述实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围，均应包含在本申请的保护范围之内。

Claims (15)

  1. 一种分动器过热保护方法，其特征在于，包括：
    获取分动器的摩擦片组的温度；
    当所述摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号；所述第一提示信号用于指示所述仪表提醒用户四驱系统过热；
    若在第一预设时长内，向所述仪表发送所述第一提示信号的次数超过预设次数，则向所述仪表发送第二提示信号，并在经过第二预设时长后，向发动机发送降扭请求；所述第二提示信号用于指示所述仪表提醒用户即将进行发动机降扭操作，所述降扭请求用于指示所述发动机降低输出扭矩。
  2. 根据权利要求1所述的分动器过热保护方法，其特征在于，在所述当所述摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号之前，还包括：
    确定当前挡位是否处于R挡；
    若当前挡位未处于R挡，则继续执行所述当所述摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号的步骤；
    若当前挡位处于R挡，则将所述摩擦片组的温度、第一预设温度和第二预设温度进行比较；
    若所述摩擦片组的温度大于所述第一预设温度且不大于所述第二预设温度，则向所述仪表发送预警信号；所述预警信号用于指示所述仪表显示预警信息；
    若所述摩擦片组的温度大于所述第二预设温度，则向所述仪表持续发送报警信号，并向所述发动机发送断扭请求；所述报警信号用于指示所述仪表提醒用户即将断开所述发动机的输出扭矩，所述断扭请求用于指示所述发动机断开输出扭矩。
  3. 根据权利要求2所述的分动器过热保护方法，其特征在于，在所述将所述摩擦片组的温度、第一预设温度和第二预设温度进行比较之前，还包括：
    将所述摩擦片组的扭矩输出系数调高至预设值；所述预设值大于1。
  4. 根据权利要求2所述的分动器过热保护方法，其特征在于，在所述向所述发动机发送断扭请求之后，还包括：
    开始记录散热时长；
    当所述散热时长大于预设标定时长时，停止向所述仪表发送所述报警信号。
  5. 根据权利要求2所述的分动器过热保护方法，其特征在于，在所述向所述发动机发送断扭请求之后，还包括：
    开始记录散热时长；
    当所述散热时长未达到所述预设标定时长时，持续向所述仪表发送所述报警信号。
  6. 根据权利要求1所述的分动器过热保护方法，其特征在于，在所述向发动机发送降扭请求之后，还包括：
    持续监测所述摩擦片组的温度；
    若当前摩擦片组的温度小于预设安全温度，则向所述发动机发送扭矩恢复请求；所述扭矩恢复请求用于指示所述发动机将输出扭矩恢复至降低之前的扭矩；
    若当前摩擦片组的温度不小于所述预设安全温度，则继续向所述发动机发送降扭请求，直至当前摩擦片组的温度小于所述预设安全温度。
  7. 根据权利要求1至6任一项所述的分动器过热保护方法，其特征在于，所述获取分动器的摩擦片组的温度，包括：
    获取车轮轮速、室外温度和发动机输出扭矩；
    根据所述车轮轮速、所述室外温度和所述发动机输出扭矩确定分动器的摩擦片组的温度。
  8. 根据权利要求7所述的分动器过热保护方法，其特征在于，所述获取分动器的摩擦片组的温度，还包括：
    获取档位；
    根据所述档位、所述车轮轮速、所述室外温度和所述发动机输出扭矩确定分动器的摩擦片组的温度。
  9. 根据权利要求8所述的分动器过热保护方法，其特征在于，所述获取分动器的摩擦片组的温度，还包括：
    获取车辆熄火时长；
    根据所述车辆熄火时长、所述车轮轮速、所述室外温度和所述发动机输出扭矩确定分动器的摩擦片组的温度。
  10. 一种分动器过热保护装置，其特征在于，包括：
    获取模块，用于获取分动器的摩擦片组的温度；
    过热报警模块，用于当所述摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号；所述第一提示信号用于指示所述仪表提醒用户四驱系统过热；以及，
    降扭模块，用于若在第一预设时长内，向所述仪表发送所述第一提示信号的次数超过预设次数，则向所述仪表发送第二提示信号，并在经过第二预设时长后，向发动机发送降扭请求；所述第二提示信号用于指示所述仪表提醒用户即将进行发动机降扭操作，所述降扭请求用于指示所述发动机降低输出扭矩。
  11. 根据权利要求10所述的分动器过热保护装置，其特征在于，还包括：倒挡保护模块；
    所述倒挡保护模块用于：
    确定当前挡位是否处于R挡；
    若当前挡位未处于R挡，则继续执行所述当所述摩擦片组的温度大于预设报警温度时，向仪表发送第一提示信号的步骤；
    若当前挡位处于R挡，则将所述摩擦片组的温度、第一预设温度和第二预设温度进行比较；
    若所述摩擦片组的温度大于所述第一预设温度且不大于所述第二预设温度，则向所述仪表发送预警信号；所述预警信号用于指示所述仪表显示预警信息；
    若所述摩擦片组的温度大于所述第二预设温度，则向所述仪表持续发送报警信号，并向所述发动机发送断扭请求；所述报警信号用于指示所述仪表提醒用户即将断开发动机的输出扭矩，所述断扭请求用于指示所述发动机断开输出扭矩。
  12. 根据权利要求10所述的分动器过热保护装置，其特征在于，所述降扭模块还用于：
    持续监测所述摩擦片组的温度；
    若当前摩擦片组的温度小于预设安全温度，则向所述发动机发送扭矩恢复请求；所述扭矩恢复请求用于指示所述发动机将输出扭矩恢复至降低之前的扭矩；
    若当前摩擦片组的温度不小于所述预设安全温度，则继续向所述发动机发送降扭请求，直至当前摩擦片组的温度小于所述预设安全温度。
  13. 根据权利要求10所述的分动器过热保护装置，其特征在于，所述获取模块还用于：
    获取车轮轮速、室外温度和发动机输出扭矩；
    根据所述车轮轮速、所述室外温度和所述发动机输出扭矩确定分动器的摩擦片组的温度。
  14. 一种终端设备，包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序，其特征在于，所述处理器执行所述计算机程序时实现如权利要求1至9任一项所述分动器过热保护方法的步骤。
  15. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，所述计算机程序被一个或多个处理器执行时实现如权利要求1至9任一项所述分动器过热保护方法的步骤。
PCT/CN2022/084364 2021-04-19 2022-03-31 分动器过热保护方法、装置及终端设备 WO2022222725A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104520156A (zh) * 2012-09-06 2015-04-15 爱信艾达株式会社 车辆用驱动装置的控制装置
DE102014223253A1 (de) * 2014-11-14 2016-05-19 Schaeffler Technologies AG & Co. KG Verfahren zum Schutz eines Kupplungssystems eines Kraftfahrzeuges
CN106335511A (zh) * 2015-07-07 2017-01-18 现代自动车株式会社 用于防止车辆的离合器过热的方法
CN111071255A (zh) * 2019-12-30 2020-04-28 吉利汽车研究院（宁波）有限公司 一种双离合自动变速器过热保护控制方法
CN111532275A (zh) * 2020-06-22 2020-08-14 北京航空航天大学 一种湿式换挡离合器的保护控制装置及保护控制方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828128C2 (de) * 1988-08-18 1996-10-31 Fichtel & Sachs Ag Anordnung zur Überwachung einer Reibungskupplung
DE102004023581A1 (de) * 2004-05-13 2005-12-08 Adam Opel Ag Verfahren zur Steuerung einer Kupplung und/oder eines Kraftfahrzeuggetriebes
JP2007276575A (ja) * 2006-04-04 2007-10-25 Toyota Motor Corp 車両の制御装置
CN102529956B (zh) * 2012-03-02 2014-07-16 潍柴动力股份有限公司 一种混合动力汽车的起动方法及系统
JP6172907B2 (ja) * 2012-10-01 2017-08-02 ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ 車両用摩擦クラッチの過負荷履歴保存装置
US10132373B2 (en) * 2016-07-13 2018-11-20 GM Global Technology Operations LLC Method for detecting and mitigating excessive clutch disc wear in manual transmissions
CN107120370B (zh) * 2017-04-27 2019-01-08 广州汽车集团股份有限公司 车辆行驶过程中离合器的保护方法和装置
CN111660962A (zh) * 2020-06-29 2020-09-15 北京博格华纳汽车传动器有限公司 分动器防烧蚀预警方法、装置及四驱车辆

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104520156A (zh) * 2012-09-06 2015-04-15 爱信艾达株式会社 车辆用驱动装置的控制装置
DE102014223253A1 (de) * 2014-11-14 2016-05-19 Schaeffler Technologies AG & Co. KG Verfahren zum Schutz eines Kupplungssystems eines Kraftfahrzeuges
CN106335511A (zh) * 2015-07-07 2017-01-18 现代自动车株式会社 用于防止车辆的离合器过热的方法
CN111071255A (zh) * 2019-12-30 2020-04-28 吉利汽车研究院（宁波）有限公司 一种双离合自动变速器过热保护控制方法
CN111532275A (zh) * 2020-06-22 2020-08-14 北京航空航天大学 一种湿式换挡离合器的保护控制装置及保护控制方法

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