Vehicle clutch protection method and device and computer equipment

Abstract

The invention relates to a vehicle clutch protection method and device, computer equipment and a storage medium. The method comprises the steps that according to engine operation parameters and transmission operation parameters of a target vehicle, the slip friction heat production of a clutch of the target vehicle is determined; determining the current temperature of the clutch according to the slip friction heat production of the clutch, the clutch parameters and the initial temperature of the clutch; wherein the initial temperature of the clutch is the initial environment temperature. And determining a clutch protection strategy of the target vehicle according to the current temperature of the clutch. According to the method, the current temperature of the clutch can be accurately determined without installing a temperature sensor on the clutch, and the clutch protection strategy of the target vehicle is determined based on the current temperature of the clutch, so that the clutch is effectively protected, the situation that the service life is affected due to the fact that the temperature of the clutch is too high is avoided, and the driving and riding safety is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of intelligent driving technology, and in particular to a vehicle clutch protection method, device and computer equipment. Background Art

[0002] Commercial vehicle power transmission technology is developing rapidly, with electronically controlled automatic mechanical transmission (AMT) being the main development trend and the user share increasing year by year.

[0003] Currently, AMT mainly uses a central dry clutch. The clutch can transmit power when engaged and interrupt power when disengaged. Excessive clutch temperature or long-term high clutch temperature will not only have an adverse effect on the service life of the clutch, but also cause a decrease in the clutch's power transmission capacity, seriously affecting driving safety.

[0004] AMT generally has a clutch temperature protection function, but the clutch temperature is generally measured by a temperature sensor, which has a high cost. Some also obtain the clutch temperature through simple estimation, but the estimation result has a large error, which will have serious consequences for the use of the clutch, not only affecting the service life of the clutch, but also affecting driving safety. Summary of the invention

[0005] Based on this, it is necessary to provide a vehicle clutch protection method, device and computer equipment that can accurately measure the current temperature of the clutch and protect the clutch in order to solve the above technical problems.

[0006] In a first aspect, the present application provides a vehicle clutch protection method. The method comprises:

[0007] Determine the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle;

[0008] Determine the current clutch temperature according to clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature;

[0009] According to the current temperature of the clutch, the clutch protection strategy of the target vehicle is determined.

[0010] In one embodiment, the engine operating parameters include engine speed, engine rotational acceleration, engine rotational mass, engine actual torque, and engine loss torque;

[0011] Accordingly, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle, including:

[0012] determining an engine rotation torque of the target vehicle based on the engine rotation mass and the engine rotation acceleration;

[0013] Determine the net engine torque of the target vehicle based on the actual engine torque, the engine rotation torque and the engine loss torque;

[0014] Determine clutch protection triggering conditions based on engine net torque, clutch pressure plate position, engine speed and transmission operating parameters;

[0015] When the clutch protection triggering condition is the triggering protection, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle.

[0016] In one embodiment, the transmission operating parameters include transmission output shaft speed;

[0017] Accordingly, the clutch protection triggering condition is determined according to the engine net torque, clutch pressure plate position, engine speed and transmission operating parameters, including:

[0018] determining a speed difference between an engine speed and a transmission output shaft speed;

[0019] The clutch protection triggering condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.

[0020] In one embodiment, determining the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle includes:

[0021] Taking the difference between the engine speed and the transmission output shaft speed as the first value;

[0022] The clutch slippage heat generation of the target vehicle is determined according to the product of the engine net torque and the first value.

[0023] In one embodiment, determining the current clutch temperature according to clutch friction heat generation, clutch parameters and clutch initial temperature includes:

[0024] Determining a first temperature according to clutch sliding friction heat generation and the clutch initial temperature;

[0025] determining the heat dissipation of the clutch according to the first temperature and the current ambient temperature;

[0026] The current temperature of the clutch is determined based on the clutch sliding heat generation, clutch heat dissipation and clutch parameters.

[0027] In one embodiment, the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity:

[0028] Accordingly, the current clutch temperature is determined based on the clutch friction heat generation, clutch heat dissipation and clutch parameters, including:

[0029] The difference between the clutch sliding friction heat generation and the clutch heat dissipation is taken as the clutch effective heat;

[0030] The current clutch temperature is determined based on the clutch effective heat and clutch parameters.

[0031] In one embodiment, determining a clutch protection strategy of a target vehicle according to a current clutch temperature includes:

[0032] Determine the clutch overheating state based on the clutch effective heat and the clutch current temperature;

[0033] According to the clutch overheating status, the clutch protection strategy of the target vehicle is determined.

[0034] In a second aspect, the present application also provides a vehicle clutch protection device. The device comprises:

[0035] A first determination module is used to determine the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle;

[0036] The second determination module is used to determine the current clutch temperature according to the clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature;

[0037] The third determination module is used to determine the clutch protection strategy of the target vehicle according to the current temperature of the clutch.

[0038] In a third aspect, the present application further provides a computer device. The computer device includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0039] Determine the clutch friction heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle; wherein the clutch initial temperature is the initial ambient temperature;

[0040] Determine the current clutch temperature based on clutch friction heat generation, clutch parameters and clutch initial temperature;

[0041] According to the current temperature of the clutch, the clutch protection strategy of the target vehicle is determined.

[0042] In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0043] Determine the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle;

[0044] Determine the current clutch temperature according to clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature;

[0045] According to the current temperature of the clutch, the clutch protection strategy of the target vehicle is determined.

[0046] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0047] Determine the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle;

[0048] Determine the current clutch temperature according to clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature;

[0049] According to the current temperature of the clutch, the clutch protection strategy of the target vehicle is determined.

[0050] The above-mentioned vehicle clutch protection method, device and computer equipment determine the clutch slip heat generation of the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle. Determine the current clutch temperature based on the clutch slip heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature. Determine the clutch protection strategy of the target vehicle based on the current clutch temperature. This application does not require the installation of a temperature sensor on the clutch, and can accurately determine the current clutch temperature, and determine the clutch protection strategy of the target vehicle based on the current clutch temperature, which not only effectively protects the clutch and prevents the clutch temperature from being too high, affecting its service life, but also effectively improves driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 An application environment diagram of the vehicle clutch protection method provided in this embodiment;

[0052] Figure 2 A schematic flow chart of a first vehicle clutch protection method provided in this embodiment;

[0053] Figure 3A schematic diagram of a flow chart for determining clutch slip heat generation of a target vehicle provided in this embodiment;

[0054] Figure 4 A schematic diagram of a process for determining the current temperature of the clutch provided in this embodiment;

[0055] Figure 5 A schematic diagram of a flow chart for determining a clutch protection strategy for a target vehicle provided in this embodiment;

[0056] Figure 6 A schematic flow chart of a second vehicle clutch protection method provided in this embodiment;

[0057] Figure 7 A structural block diagram of a vehicle clutch protection device provided in this embodiment;

[0058] Figure 8 This is a diagram of the internal structure of the computer device provided in this embodiment. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0060] The vehicle clutch protection method provided in the embodiment of the present application can be executed by the target vehicle 102, or can be executed by the server 104. That is, the method can be applied to Figure 1 In the application environment shown. Taking the application to server 104 as an example, server 104 determines the clutch friction heat generation of the target vehicle according to the engine operating parameters and transmission operating parameters of the target vehicle. According to the clutch friction heat generation, clutch parameters and clutch initial temperature, the current clutch temperature is determined. According to the current clutch temperature, the clutch protection strategy of the target vehicle is determined. Among them, the clutch initial temperature is the initial ambient temperature.

[0061] The server 104 may be implemented as an independent server or a server cluster composed of multiple servers. The target terminal 102 refers to a new energy vehicle. This application does not limit the type, brand and model of the new energy vehicle. The target vehicle may be a medium, heavy and light electric vehicle, or a small electric vehicle.

[0062] In one embodiment, if Figure 2 As shown, a vehicle clutch protection method is provided, which is applied to Figure 1 The server in the example is used as an example. Figure 2 As shown, the following steps are included:

[0063] S201, determining the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle.

[0064] Among them, the target vehicle refers to the vehicle for which the current temperature of the clutch needs to be determined. The engine operating parameters refer to the engine-related parameters of the target vehicle. The transmission operating parameters refer to the transmission-related parameters of the target vehicle. The transmission operating parameters of this application at least include the transmission output shaft speed. The clutch slip heat generation refers to the heat generated by friction when the clutch is working.

[0065] Optionally, in this embodiment, the engine operating parameters and transmission operating parameters of the target vehicle are input into a trained first neural network model, and the first neural network model outputs the clutch slip heat generation of the target vehicle.

[0066] It should be noted that the engine operating parameters and transmission operating parameters in the present application can be obtained based on detection of relevant sensors in the target vehicle without the need to add additional sensors.

[0067] S202, determining the current temperature of the clutch according to the clutch sliding heat generation, clutch parameters and the clutch initial temperature.

[0068] The clutch initial temperature is the initial ambient temperature, which may refer to the ambient temperature when the target vehicle starts to run. The ambient temperature at this time is highly similar to the clutch temperature. Therefore, the initial ambient temperature is used as the clutch initial temperature. The clutch current temperature refers to the clutch temperature at the current moment.

[0069] Optionally, in this embodiment, the heat generated by clutch sliding, clutch parameters and clutch initial temperature are input into a trained second neural network model, and the second neural network model outputs the current temperature of the clutch.

[0070] S203: Determine a clutch protection strategy for the target vehicle according to the current clutch temperature.

[0071] As an optional implementation of the embodiment of the present application, the temperature level is determined according to the current temperature of the clutch, and the clutch protection strategy of the target vehicle is determined based on the temperature level, wherein different temperature levels have different clutch protection strategies.

[0072] The above-mentioned vehicle clutch protection method determines the clutch slip heat generation of the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle. The current clutch temperature is determined based on the clutch slip heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature. The clutch protection strategy of the target vehicle is determined based on the current clutch temperature. This application does not require the installation of a temperature sensor on the clutch, and can accurately determine the current clutch temperature, and determine the clutch protection strategy of the target vehicle based on the current clutch temperature, which not only effectively protects the clutch and prevents the clutch temperature from being too high, affecting its service life, but also effectively improves driving safety.

[0073] In one embodiment, the engine operating parameters include engine speed, engine rotation acceleration, engine rotation quality, engine actual torque and engine loss torque. On this basis, in order to determine the triggering time of clutch slippage heat generation of the target vehicle, such as Figure 3 As shown, an optional implementation of S201 includes:

[0074] S301, determining the engine rotation torque of the target vehicle according to the engine rotation mass and the engine rotation acceleration.

[0075] Optionally, in this embodiment, the engine rotation torque of the target vehicle is determined based on the engine rotation mass and the engine rotation acceleration, as well as the conversion parameters of the engine rotation torque and the engine speed acceleration. Specifically, the engine rotation torque of the target vehicle can be determined by the following formula (1):

[0076] (1)

[0077] Wherein, A in formula (1) represents the conversion parameter between engine rotation torque and engine speed acceleration, which is a fixed value.

[0078] S302: Determine the net engine torque of the target vehicle according to the actual engine torque, the engine rotation torque and the engine loss torque.

[0079] Optionally, in this embodiment, the value obtained by subtracting the engine rotation torque and the engine loss torque in sequence from the actual engine torque is used as the net engine torque of the target vehicle.

[0080] S303, determining the clutch protection triggering condition according to the engine net torque, the clutch pressure plate position, the engine speed and the transmission operating parameters.

[0081] Optionally, in this embodiment, the transmission operating parameters include the transmission output shaft speed.

[0082] Optionally, in this embodiment, the speed difference between the engine speed and the transmission output shaft speed is determined. The clutch protection triggering condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold. Specifically, when the engine net torque is greater than the torque threshold, and the clutch pressure plate position is greater than the position threshold, and the speed difference is greater than the difference threshold, the clutch protection triggering condition is triggering protection. Otherwise, the clutch protection triggering condition is not triggering protection. Among them, the position threshold can be the clutch semi-clutch position; the clutch semi-clutch position refers to the position where the clutch pressure plate just contacts the driven plate. The clutch pressure plate position can be determined by a displacement sensor.

[0083] S304: When the clutch protection triggering condition is the triggering protection, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle.

[0084] Optionally, in this embodiment, the difference between the engine speed and the transmission output shaft speed is used as the first value. The clutch friction heat generation of the target vehicle is determined based on the product of the engine net torque and the first value; specifically, the clutch friction heat generation power of the target vehicle can be determined by the following formula (2), and then the clutch friction heat generation power and the friction heat generation time are integrated to obtain the clutch friction heat generation of the target vehicle:

[0085] (2)

[0086] Wherein, B in formula (2) refers to the conversion parameter between the net torque of the engine and the heat generated by the slipping friction of the clutch, which is a fixed value.

[0087] In this embodiment, the engine rotation torque of the target vehicle is determined based on the engine rotation mass and the engine rotation acceleration. The net engine torque of the target vehicle is determined based on the actual engine torque, the engine rotation torque and the engine loss torque. The clutch protection triggering condition is determined based on the net engine torque, the clutch pressure plate position, the engine speed and the transmission operating parameters. In the case where the clutch protection triggering condition is the trigger protection, the clutch slip heat generation of the target vehicle is determined based on the engine operating parameters and the transmission operating parameters of the target vehicle. In this embodiment, a trigger condition for determining the clutch slip heat generation of the target vehicle is provided. Based on the trigger condition, the clutch slip heat generation of the target vehicle is triggered to determine, thereby avoiding the waste of computing resources and reducing unnecessary resource overhead.

[0088] In one embodiment, in order to more accurately determine the current clutch temperature of the target vehicle, as shown in FIG. Figure 4 As shown, an optional implementation of S202 includes:

[0089] S401, determining a first temperature according to clutch sliding heat generation and the clutch initial temperature.

[0090] The first temperature refers to the clutch temperature estimated based on the clutch sliding heat generation and the clutch initial temperature.

[0091] Optionally, in this embodiment, based on the clutch friction heat generation, the clutch temperature rise is predicted when the clutch friction heat generation is generated, and the sum of the clutch temperature rise and the clutch initial temperature is used as the first temperature.

[0092] Optionally, in this embodiment, the clutch friction heat generation and the clutch initial temperature are input into a temperature prediction model, and the temperature prediction model outputs the first temperature. The temperature prediction model may be a neural network model.

[0093] S402, determining the heat dissipation of the clutch according to the first temperature and the current ambient temperature.

[0094] Optionally, in this embodiment, the clutch heat dissipation power can be determined based on the following formula (3), and the clutch heat dissipation amount can be obtained by integrating the clutch heat dissipation power and the heat dissipation time:

[0095] Clutch heat dissipation power = h × S × (first temperature - current ambient temperature) (3)

[0096] In formula (3), h is the heat transfer coefficient of the clutch in the atmosphere, which is a fixed value; S is the heat transfer area, which is a fixed value.

[0097] S403, determining the current temperature of the clutch according to the clutch sliding heat generation, clutch heat dissipation and clutch parameters.

[0098] Optionally, in this embodiment, the difference between the heat generated by clutch sliding friction and the heat dissipated by the clutch is used as the clutch effective heat. The current temperature of the clutch is determined according to the clutch effective heat and clutch parameters.

[0099] In this embodiment, the current clutch temperature can be determined based on the clutch effective heat and clutch parameters and the following formula (4):

[0100] kQ=cm(T-Ti) (4)

[0101] Among them, in formula (4), KQ is the effective heat of the clutch; c is the specific heat capacity of the clutch material, which is a fixed value; m is the mass of the clutch pressure plate, which is not a fixed value; Ti is the initial temperature of the clutch; and T is the current temperature of the clutch.

[0102] In this embodiment, the first temperature is determined according to the clutch friction heat generation and the clutch initial temperature. The clutch heat dissipation is determined according to the first temperature and the current ambient temperature. The difference between the clutch friction heat generation and the clutch heat dissipation is used as the clutch effective heat. According to the clutch effective heat and clutch parameters, the current clutch temperature can be determined more accurately.

[0103] On the basis of the above embodiment, in order to determine the clutch protection strategy of the target vehicle, such as Figure 5 As shown, an optional implementation of S203 includes:

[0104] S501, determining the overheating state of the clutch according to the clutch effective heat and the current clutch temperature.

[0105] Optionally, in this embodiment, if the clutch effective heat Q is greater than a set first heat threshold Q1, or the clutch current temperature T is greater than a set first temperature threshold T1, the clutch overheat state is a first overheat state.

[0106] If the clutch effective heat Q is greater than the second heat threshold Q2, or the clutch current temperature T is greater than the set second temperature threshold T2, the clutch overheat state is the second overheat state.

[0107] If the clutch effective heat Q is greater than the third heat threshold Q3, or the clutch current temperature T is greater than the set third temperature threshold T3, the clutch overheat state is the third overheat state.

[0108] S502: Determine a clutch protection strategy for the target vehicle according to the clutch overheating state.

[0109] Optionally, in this embodiment, if the clutch overheating state is in the first overheating state, the clutch protection strategy is to remind the driver of "high clutch temperature" through the vehicle display screen, and change the starting gear to the lowest gear of the transmission, and do not increase the clutch engagement speed for the time being.

[0110] If the clutch overheating state is in the second overheating state, the clutch protection strategy is to remind the driver of "clutch temperature overload" through the vehicle display screen, and change the starting gear to the lowest gear of the transmission to speed up the clutch engagement speed;

[0111] If the clutch overheating state is in the third overheating state, the clutch protection strategy is to remind the driver through the vehicle display screen that "the clutch temperature is too high, please stop and cool down", and change the gear to neutral, combined with the clutch cooling, and no longer engage the gear.

[0112] In one embodiment, if Figure 6 As shown, an optional implementation of the vehicle clutch protection method is:

[0113] S601, determining the engine rotation torque of the target vehicle according to the engine rotation mass and the engine rotation acceleration.

[0114] S602: Determine the net engine torque of the target vehicle according to the actual engine torque, the engine rotation torque and the engine loss torque.

[0115] S603, determining a speed difference between the engine speed and the transmission output shaft speed.

[0116] S604, determining the clutch protection triggering condition based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.

[0117] S605: When the clutch protection trigger condition is the protection trigger condition, the difference between the engine speed and the transmission output shaft speed is used as the first value.

[0118] S606: Determine the clutch slippage heat generation of the target vehicle according to the product of the engine net torque and the first value.

[0119] S607, determining a first temperature according to the clutch sliding heat generation and the clutch initial temperature.

[0120] S608: Determine the heat dissipation of the clutch according to the first temperature and the current ambient temperature.

[0121] S609: The difference between the heat generated by the clutch sliding friction and the heat dissipated by the clutch is used as the clutch effective heat.

[0122] S610: Determine the current temperature of the clutch according to the clutch effective heat and clutch parameters.

[0123] S611, determining the clutch overheating state according to the clutch effective heat and the clutch current temperature.

[0124] S612: Determine a clutch protection strategy for the target vehicle according to the clutch overheating state.

[0125] In this embodiment, the clutch friction heat generation of the target vehicle is determined based on the engine operating parameters and transmission operating parameters of the target vehicle. The current clutch temperature is determined based on the clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature. The clutch protection strategy of the target vehicle is determined based on the current clutch temperature. This application does not require the installation of a temperature sensor on the clutch, and can accurately determine the current clutch temperature, and determine the clutch protection strategy of the target vehicle based on the current clutch temperature, which not only effectively protects the clutch and prevents the clutch temperature from being too high, affecting its service life, but also effectively improves driving safety.

[0126] Based on the same inventive concept, the embodiment of the present application also provides a vehicle clutch protection device for implementing the vehicle clutch protection method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiment of a vehicle clutch protection device provided below can refer to the limitations of the vehicle clutch protection method above, and will not be repeated here.

[0127] In one embodiment, if Figure 7 As shown, a vehicle clutch protection device 1 is provided, comprising:

[0128] A first determination module 10 is used to determine the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle;

[0129] The second determination module 20 is used to determine the current clutch temperature according to the clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature;

[0130] The third determination module 30 is used to determine the clutch protection strategy of the target vehicle according to the current temperature of the clutch.

[0131] The vehicle clutch protection device 1 in this embodiment determines the clutch friction heat generation of the target vehicle according to the engine operating parameters and transmission operating parameters of the target vehicle. The current clutch temperature is determined according to the clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature. The clutch protection strategy of the target vehicle is determined according to the current clutch temperature. This application does not require the installation of a temperature sensor on the clutch, and can accurately determine the current clutch temperature, and determine the clutch protection strategy of the target vehicle based on the current clutch temperature, which not only effectively protects the clutch and prevents the clutch temperature from being too high, affecting its service life, but also effectively improves driving safety.

[0132] In one embodiment, the engine operating parameters include engine speed, engine rotation acceleration, engine rotation quality, engine actual torque and engine loss torque; on this basis, Figure 7 The first determining module 10 is also specifically used for:

[0133] determining an engine rotation torque of the target vehicle based on the engine rotation mass and the engine rotation acceleration;

[0134] Determine the net engine torque of the target vehicle based on the actual engine torque, the engine rotation torque and the engine loss torque;

[0135] Determine clutch protection triggering conditions based on engine net torque, clutch pressure plate position, engine speed and transmission operating parameters;

[0136] When the clutch protection triggering condition is the triggering protection, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle.

[0137] In one embodiment, the transmission operating parameters include the transmission output shaft speed; on this basis, Figure 7 The first determining module 10 is also specifically used for:

[0138] determining a speed difference between an engine speed and a transmission output shaft speed;

[0139] The clutch protection triggering condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.

[0140] In one embodiment, the Figure 7 The first determining module 10 is also specifically used for:

[0141] Taking the difference between the engine speed and the transmission output shaft speed as the first value;

[0142] The clutch slippage heat generation of the target vehicle is determined according to the product of the engine net torque and the first value.

[0143] In one embodiment, the Figure 7 The second determining module 20 in the embodiment is further specifically configured to:

[0144] Determining a first temperature according to clutch sliding friction heat generation and the clutch initial temperature;

[0145] determining the heat dissipation of the clutch according to the first temperature and the current ambient temperature;

[0146] The current temperature of the clutch is determined based on the clutch sliding heat generation, clutch heat dissipation and clutch parameters.

[0147] In one embodiment, the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity. Figure 7 The second determining module 20 in the embodiment is further specifically configured to:

[0148] The difference between the clutch sliding friction heat generation and the clutch heat dissipation is taken as the clutch effective heat;

[0149] The current clutch temperature is determined based on the clutch effective heat and clutch parameters.

[0150] In one embodiment, the Figure 7 The third determination module 30 in is further specifically used for:

[0151] Determine the clutch overheating state based on the clutch effective heat and the clutch current temperature;

[0152] According to the clutch overheating status, the clutch protection strategy of the target vehicle is determined.

[0153] Each module in the above-mentioned vehicle clutch protection device can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each module.

[0154] In one embodiment, a computer device is provided, whose internal structure diagram can be as follows: Figure 8As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a vehicle clutch protection method is realized. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0155] Those skilled in the art will understand that Figure 8 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0156] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0157] Determine the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle;

[0158] Determine the current clutch temperature according to clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature;

[0159] According to the current temperature of the clutch, the clutch protection strategy of the target vehicle is determined.

[0160] In one embodiment, when the processor executes the computer program, the following steps are further implemented: the engine operating parameters include engine speed, engine rotation acceleration, engine rotation mass, engine actual torque and engine loss torque;

[0161] Accordingly, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle, including:

[0162] determining an engine rotation torque of the target vehicle based on the engine rotation mass and the engine rotation acceleration;

[0163] Determine the net engine torque of the target vehicle based on the actual engine torque, the engine rotation torque and the engine loss torque;

[0164] Determine clutch protection triggering conditions based on engine net torque, clutch pressure plate position, engine speed and transmission operating parameters;

[0165] When the clutch protection triggering condition is the triggering protection, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle.

[0166] In one embodiment, when the processor executes the computer program, the following steps are further implemented: the transmission operating parameters include the transmission output shaft speed;

[0167] Accordingly, the clutch protection triggering condition is determined according to the engine net torque, clutch pressure plate position, engine speed and transmission operating parameters, including:

[0168] determining a speed difference between an engine speed and a transmission output shaft speed;

[0169] The clutch protection triggering condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.

[0170] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle, including:

[0171] Taking the difference between the engine speed and the transmission output shaft speed as the first value;

[0172] The clutch slippage heat generation of the target vehicle is determined according to the product of the engine net torque and the first value.

[0173] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining the current temperature of the clutch according to the clutch slip heat generation, clutch parameters and the clutch initial temperature, including:

[0174] Determining a first temperature according to clutch sliding friction heat generation and the clutch initial temperature;

[0175] determining the heat dissipation of the clutch according to the first temperature and the current ambient temperature;

[0176] The current temperature of the clutch is determined based on the clutch sliding heat generation, clutch heat dissipation and clutch parameters.

[0177] In one embodiment, when the processor executes the computer program, the following steps are further implemented: the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity:

[0178] Accordingly, the current clutch temperature is determined based on the clutch friction heat generation, clutch heat dissipation and clutch parameters, including:

[0179] The difference between the clutch sliding friction heat generation and the clutch heat dissipation is taken as the clutch effective heat;

[0180] The current clutch temperature is determined based on the clutch effective heat and clutch parameters.

[0181] In one embodiment, when the processor executes the computer program, the following steps are also implemented: determining a clutch protection strategy of the target vehicle according to the current temperature of the clutch, including:

[0182] Determine the clutch overheating state based on the clutch effective heat and the clutch current temperature;

[0183] According to the clutch overheating status, the clutch protection strategy of the target vehicle is determined.

[0184] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0185] Determine the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle;

[0186] Determine the current clutch temperature according to clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature;

[0187] According to the current temperature of the clutch, the clutch protection strategy of the target vehicle is determined.

[0188] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: the engine operating parameters include engine speed, engine rotation acceleration, engine rotation mass, engine actual torque and engine loss torque;

[0189] Accordingly, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle, including:

[0190] determining an engine rotation torque of the target vehicle based on the engine rotation mass and the engine rotation acceleration;

[0191] Determine the net engine torque of the target vehicle based on the actual engine torque, the engine rotation torque and the engine loss torque;

[0192] Determine clutch protection triggering conditions based on engine net torque, clutch pressure plate position, engine speed and transmission operating parameters;

[0193] When the clutch protection triggering condition is the triggering protection, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle.

[0194] In one embodiment, the computer program further implements the following steps when executed by the processor: the transmission operating parameters include the transmission output shaft speed;

[0195] Accordingly, the clutch protection triggering condition is determined according to the engine net torque, clutch pressure plate position, engine speed and transmission operating parameters, including:

[0196] determining a speed difference between an engine speed and a transmission output shaft speed;

[0197] The clutch protection triggering condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.

[0198] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle, including:

[0199] Taking the difference between the engine speed and the transmission output shaft speed as the first value;

[0200] The clutch slippage heat generation of the target vehicle is determined according to the product of the engine net torque and the first value.

[0201] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the current temperature of the clutch according to the clutch slip heat generation, clutch parameters and the clutch initial temperature, including:

[0202] Determining a first temperature according to clutch sliding friction heat generation and the clutch initial temperature;

[0203] determining the heat dissipation of the clutch according to the first temperature and the current ambient temperature;

[0204] The current temperature of the clutch is determined based on the clutch sliding heat generation, clutch heat dissipation and clutch parameters.

[0205] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity:

[0206] Accordingly, the current clutch temperature is determined based on the clutch friction heat generation, clutch heat dissipation and clutch parameters, including:

[0207] The difference between the clutch sliding friction heat generation and the clutch heat dissipation is taken as the clutch effective heat;

[0208] The current clutch temperature is determined based on the clutch effective heat and clutch parameters.

[0209] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining a clutch protection strategy of the target vehicle according to the current temperature of the clutch, including:

[0210] Determine the clutch overheating state based on the clutch effective heat and the clutch current temperature;

[0211] According to the clutch overheating status, the clutch protection strategy of the target vehicle is determined.

[0212] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0213] Determine the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle;

[0214] Determine the current clutch temperature according to clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature;

[0215] According to the current temperature of the clutch, the clutch protection strategy of the target vehicle is determined.

[0216] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: the engine operating parameters include engine speed, engine rotation acceleration, engine rotation mass, engine actual torque and engine loss torque;

[0217] Accordingly, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle, including:

[0218] determining an engine rotation torque of the target vehicle based on the engine rotation mass and the engine rotation acceleration;

[0219] Determine the net engine torque of the target vehicle based on the actual engine torque, the engine rotation torque and the engine loss torque;

[0220] Determine clutch protection triggering conditions based on engine net torque, clutch pressure plate position, engine speed and transmission operating parameters;

[0221] When the clutch protection triggering condition is the triggering protection, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle.

[0222] In one embodiment, the computer program further implements the following steps when executed by the processor: the transmission operating parameters include the transmission output shaft speed;

[0223] Accordingly, the clutch protection triggering condition is determined according to the engine net torque, clutch pressure plate position, engine speed and transmission operating parameters, including:

[0224] determining a speed difference between an engine speed and a transmission output shaft speed;

[0225] The clutch protection triggering condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.

[0226] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle, including:

[0227] Taking the difference between the engine speed and the transmission output shaft speed as the first value;

[0228] The clutch slippage heat generation of the target vehicle is determined according to the product of the engine net torque and the first value.

[0229] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the current temperature of the clutch according to the clutch slip heat generation, clutch parameters and the clutch initial temperature, including:

[0230] Determining a first temperature according to clutch sliding friction heat generation and the clutch initial temperature;

[0231] determining the heat dissipation of the clutch according to the first temperature and the current ambient temperature;

[0232] The current temperature of the clutch is determined based on the clutch sliding heat generation, clutch heat dissipation and clutch parameters.

[0233] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity:

[0234] Accordingly, the current clutch temperature is determined based on the clutch friction heat generation, clutch heat dissipation and clutch parameters, including:

[0235] The difference between the clutch sliding friction heat generation and the clutch heat dissipation is taken as the clutch effective heat;

[0236] The current clutch temperature is determined based on the clutch effective heat and clutch parameters.

[0237] In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: determining a clutch protection strategy of the target vehicle according to the current temperature of the clutch, including:

[0238] Determine the clutch overheating state based on the clutch effective heat and the clutch current temperature;

[0239] According to the clutch overheating status, the clutch protection strategy of the target vehicle is determined.

[0240] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0241] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0242] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A vehicle clutch protection method, characterized in that: The method comprises: Determining clutch slippage heat generation of the target vehicle according to engine operating parameters and transmission operating parameters of the target vehicle; Determine the current clutch temperature according to the clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature; A clutch protection strategy for the target vehicle is determined according to the current temperature of the clutch.

2. The method according to claim 1, characterized in that The engine operating parameters include engine speed, engine rotation acceleration, engine rotation mass, engine actual torque and engine loss torque; Accordingly, determining the clutch slippage heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle includes: determining an engine rotation torque of the target vehicle according to the engine rotation mass and the engine rotation acceleration; Determining a net engine torque of the target vehicle according to the actual engine torque, the engine rotation torque and the engine loss torque; determining a clutch protection triggering condition according to the engine net torque, the clutch pressure plate position, the engine speed and the transmission operating parameters; When the clutch protection triggering condition is triggering protection, the clutch slippage heat generation of the target vehicle is determined according to the engine operating parameters and the transmission operating parameters of the target vehicle.

3. The method according to claim 2, characterized in that The transmission operating parameters include the transmission output shaft speed; Accordingly, determining the clutch protection triggering condition according to the engine net torque, the clutch pressure plate position, the engine speed and the transmission operating parameters includes: determining a speed difference between the engine speed and the transmission output shaft speed; The clutch protection triggering condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.

4. The method according to claim 2, characterized in that: The step of determining the clutch friction heat generation of the target vehicle according to the engine operating parameters and the transmission operating parameters of the target vehicle comprises: Taking the difference between the engine speed and the transmission output shaft speed as a first value; The clutch slippage heat generation of the target vehicle is determined according to the product of the engine net torque and the first value.

5. The method according to claim 4, characterized in that Determining the current clutch temperature according to the clutch friction heat generation, clutch parameters and clutch initial temperature includes: Determining a first temperature according to the clutch sliding friction heat generation and the clutch initial temperature; determining the heat dissipation of the clutch according to the first temperature and the current ambient temperature; The current temperature of the clutch is determined according to the clutch sliding friction heat generation, the clutch heat dissipation and the clutch parameters.

6. The method according to claim 5, characterized in that The clutch parameters include clutch pressure plate mass and clutch specific heat capacity; Accordingly, determining the current temperature of the clutch according to the clutch friction heat generation, the clutch heat dissipation and the clutch parameters includes: The difference between the clutch sliding friction heat generation and the clutch heat dissipation is used as the clutch effective heat; The current temperature of the clutch is determined according to the clutch effective heat and the clutch parameter.

7. The method according to claim 6, characterized in that Determining the clutch protection strategy of the target vehicle according to the current temperature of the clutch includes: determining an overheating state of the clutch according to the clutch effective heat and the clutch current temperature; A clutch protection strategy for the target vehicle is determined according to the clutch overheating state.

8. A vehicle clutch protection device, characterized in that: The device comprises: A first determination module, configured to determine a clutch slippage heat generation of the target vehicle according to an engine operating parameter and a transmission operating parameter of the target vehicle; A second determination module is used to determine the current clutch temperature according to the clutch friction heat generation, clutch parameters and clutch initial temperature; wherein the clutch initial temperature is the initial ambient temperature; The third determination module is used to determine the clutch protection strategy of the target vehicle according to the current temperature of the clutch.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the vehicle clutch protection method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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