Clutch fault diagnosis method and device and computer equipment

Abstract

The invention relates to a clutch fault diagnosis method and device, computer equipment and a storage medium. The method belongs to the technical field of vehicle fault diagnosis. Wherein the vehicle state comprises a motion mode, an operation state and a fault state. And according to the vehicle state, whether the target vehicle meets the trigger condition of clutch fault detection is determined. Under the condition that the trigger condition of clutch fault detection is met, the clutch driving and driven end speed difference of the target vehicle is determined according to the engine rotating speed and the driving motor rotating speed of the target vehicle, and the clutch adhesion fault result of the target vehicle can be accurately determined according to the engine rotating speed and the clutch driving and driven end speed difference. Based on the method and the device, whether the adhesion fault of the clutch occurs or not can be quickly and accurately determined, the adhesion fault (namely an ablation fault) of the clutch can be conveniently and timely processed, and the driving safety of the target vehicle is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle fault diagnosis, and in particular to a clutch fault diagnosis method, device and computer equipment. Background Art

[0002] The clutch is a key actuator that is widely used in transmission systems. It is responsible for transmitting or cutting off the power from the power source to the wheels. In recent years, the clutch has been particularly outstanding in its stable torque transmission and shock absorption capabilities in hybrid transmissions, making it an irreplaceable transmission component.

[0003] However, the clutch also has failure modes. When the clutch pressure plate force is unstable, the actual torque transmission capacity is significantly less than the input torque on the engine side, and a large speed difference will be generated between the clutch master and slave ends. The product of the speed difference and the transmission torque is the instantaneous heat generated by the clutch friction plate. When the heat cannot be dissipated in time, the clutch friction material will be burned. One manifestation of clutch burning is the master and slave ends sticking together, losing the ability to cut off power, and the torque generated by the engine is completely transmitted to the wheels. In this case, the clutch loses the ability to cut off power, seriously affecting driving safety.

[0004] Currently, there is a lack of effective clutch fault diagnosis methods, and clutch ablation faults cannot be accurately identified, resulting in the inability to handle the faults in a timely manner, which seriously affects driving safety. Summary of the invention

[0005] Based on this, it is necessary to provide a clutch fault diagnosis method, device and computer equipment that can accurately identify whether a clutch fault occurs in order to solve the above technical problems.

[0006] In a first aspect, the present application provides a clutch fault diagnosis method, the method comprising:

[0007] Obtaining the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state;

[0008] Determine whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state;

[0009] If the conditions are met, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle;

[0010] The clutch sticking fault result of the target vehicle is determined based on the engine speed and the speed difference between the clutch master and slave ends.

[0011] In one embodiment, determining whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state includes:

[0012] When the sport mode is the pure electric mode, the running state is the sport state, and the fault state is the non-fault state, it is determined that the target vehicle meets the triggering conditions for clutch fault detection.

[0013] In one embodiment, the method further comprises:

[0014] When the power-on time of the target vehicle exceeds the time threshold and the current vehicle speed is greater than the vehicle speed threshold, the running state is determined to be a moving state;

[0015] When the vehicle speed signal of the target vehicle indicates no fault, the engine speed signal indicates no fault, the drive motor speed signal indicates no fault, and the clutch control system indicates no fault, the fault state is determined to be a no-fault state.

[0016] In one embodiment, determining the clutch master and slave speed difference of the target vehicle according to the engine speed and the drive motor speed of the target vehicle includes:

[0017] The ratio between the driving motor speed and the driving motor path speed ratio is used as the first value;

[0018] The product of the first value and the engine path speed ratio is used as the second value;

[0019] The difference between the engine speed and the second value is used as the clutch master and slave end speed difference of the target vehicle.

[0020] In one embodiment, determining the clutch adhesion fault result of the target vehicle according to the engine speed and the clutch master and slave end speed difference includes:

[0021] The clutch adhesion fault result of the target vehicle is determined based on the size relationship between the engine speed and the speed threshold, and the size relationship between the speed difference between the clutch master and slave ends and the speed difference threshold.

[0022] In one embodiment, the clutch adhesion fault result of the target vehicle is determined according to the magnitude relationship between the engine speed and the speed threshold, and the magnitude relationship between the clutch master and slave end speed difference and the speed difference threshold, including:

[0023] When the engine speed is greater than the speed threshold and the speed difference between the master and slave ends of the clutch is less than the speed difference threshold, it is determined that the clutch adhesion fault result of the target vehicle is a adhesion fault.

[0024] In a second aspect, the present application also provides a clutch fault diagnosis device. The device comprises:

[0025] An acquisition module is used to acquire the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state;

[0026] A first determination module, used to determine whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state;

[0027] A second determination module is used to determine the speed difference between the clutch master and slave ends of the target vehicle according to the engine speed and the drive motor speed of the target vehicle if the conditions are met;

[0028] The third determination module is used to determine the clutch adhesion fault result of the target vehicle according to the engine speed and the speed difference between the master and slave ends of the clutch.

[0029] 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:

[0030] Obtaining the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state;

[0031] Determine whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state;

[0032] If the conditions are met, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle;

[0033] The clutch sticking fault result of the target vehicle is determined based on the engine speed and the speed difference between the clutch master and slave ends.

[0034] 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:

[0035] Obtaining the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state;

[0036] Determine whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state;

[0037] If the conditions are met, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle;

[0038] The clutch sticking fault result of the target vehicle is determined based on the engine speed and the speed difference between the clutch master and slave ends.

[0039] 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:

[0040] Obtaining the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state;

[0041] Determine whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state;

[0042] If the conditions are met, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle;

[0043] The clutch sticking fault result of the target vehicle is determined based on the engine speed and the speed difference between the clutch master and slave ends.

[0044] The clutch fault diagnosis method, device and computer equipment described above obtain the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state and a fault state. And according to the vehicle state, it is determined whether the target vehicle meets the triggering conditions for clutch fault detection. When the triggering conditions for clutch fault detection are met, the clutch master-slave speed difference of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle, and the clutch adhesion fault result of the target vehicle can be accurately determined according to the engine speed and the clutch master-slave speed difference. Based on this application, it is possible to quickly and accurately determine whether the clutch has an adhesion fault, and it is convenient to handle the clutch adhesion fault (i.e., ablation fault) in a timely manner, which greatly improves the safety of the target vehicle when driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 An application environment diagram of the clutch fault diagnosis method provided in this embodiment;

[0046] Figure 2 A schematic flow chart of a first clutch fault diagnosis method provided in this embodiment;

[0047] Figure 3 A schematic diagram of a flow chart for determining whether a target vehicle meets the triggering conditions for clutch fault detection provided in this embodiment;

[0048] Figure 4 A schematic diagram of a process for determining the speed difference between the clutch master and slave ends of a target vehicle provided in this embodiment;

[0049] Figure 5 A schematic flow chart of a second clutch fault diagnosis method provided in this embodiment;

[0050] Figure 6 A structural block diagram of a clutch fault diagnosis device provided in this embodiment;

[0051] Figure 7 This is a diagram of the internal structure of the computer device provided in this embodiment. DETAILED DESCRIPTION

[0052] 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.

[0053] The clutch fault diagnosis method provided in the embodiment of the present application can be applied to the vehicle-mounted terminal on the target vehicle, that is, the method can be applied to Figure 1 In the application environment shown. Among them, the vehicle terminal 104 obtains the vehicle state of the target vehicle through the detection device 102 on the target vehicle. The vehicle terminal 104 determines whether the target vehicle meets the triggering conditions for clutch fault detection according to the vehicle state; if it does, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle. The vehicle terminal 104 determines the clutch adhesion fault result of the target vehicle based on the engine speed and the speed difference between the clutch master and slave ends. Among them, the vehicle state includes the vehicle motion mode, the vehicle operation state and the vehicle fault state;

[0054] The vehicle-mounted terminal 104 refers to a terminal device on the target vehicle, such as a controller on the target vehicle, or an intelligent terminal device bound to the target vehicle, such as a mobile phone, a computer, etc.

[0055] The detection device 102 refers to a detection device configured on the target vehicle and used to obtain relevant data of the target vehicle. The detection device can be various sensors or controllers on the target vehicle.

[0056] The target vehicle 106 refers to a vehicle that needs to be tested for clutch failure. The target vehicle of the present application is mainly a hybrid vehicle.

[0057] In one embodiment, a clutch fault diagnosis method is provided, which is applied to Figure 1 The vehicle terminal in the example is used to illustrate. Figure 2 As shown, the following steps are included:

[0058] S201, obtaining the vehicle status of the target vehicle.

[0059] The vehicle state refers to the state information of the target vehicle, including but not limited to the motion mode, the running state and the fault state. The target vehicle refers to the vehicle that needs to be tested for clutch faults. The target vehicle of this application is mainly a hybrid vehicle.

[0060] As an optional implementation of the embodiment of the present application, the vehicle state of the target vehicle can be obtained through a detection device, wherein the detection device can be a sensor and / or a controller configured on the target vehicle.

[0061] As another optional implementation of the embodiment of the present application, a query request is sent to a control device to obtain the vehicle status of the target vehicle. The query device may be, but is not limited to, a controller of the target vehicle, or may be a vehicle networking platform. The vehicle status of the target vehicle is recorded in the vehicle networking platform.

[0062] S202: Determine whether the target vehicle satisfies a clutch fault detection trigger condition based on the vehicle state.

[0063] The clutch fault detection refers to the fault detection of the clutch of the target vehicle.

[0064] As an optional implementation of the embodiment of the present application, the vehicle state score is determined according to the vehicle state, and whether the target vehicle meets the clutch fault detection triggering condition is determined according to the magnitude relationship between the vehicle state score and the state score threshold.

[0065] S203: If the conditions are met, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle.

[0066] Among them, the engine speed refers to the speed value of the engine output end of the target vehicle, which can be obtained through the engine speed sensor. The drive motor speed refers to the output speed value of the drive motor of the target vehicle. The clutch master and slave end quick check refers to the speed difference between the active end and the driven end of the clutch.

[0067] As an optional implementation of the embodiment of the present application, the engine speed and the drive motor speed of the target vehicle are input into the calculation model, and the calculation model outputs the clutch master and slave speed difference of the target vehicle. The calculation model adopts but is not limited to a neural network model.

[0068] Another optional implementation of the embodiment of the present application is to determine the speed difference between the clutch master and slave ends of the target vehicle based on the differential calculation formula and according to the engine speed and drive motor speed of the target vehicle.

[0069] S204, determining a clutch adhesion fault result of the target vehicle according to the engine speed and the clutch master and slave end speed difference.

[0070] The clutch adhesion failure result refers to whether the clutch has adhesion failure, that is, the result of ablation failure.

[0071] Optionally, in this embodiment, the clutch adhesion fault result of the target vehicle is determined based on the size relationship between the engine speed and the speed threshold, and the size relationship between the clutch master and slave end speed difference and the speed difference threshold. Further, when the engine speed is greater than the speed threshold, and the clutch master and slave end speed difference is less than the speed difference threshold, the clutch adhesion fault result of the target vehicle is determined to be the presence of adhesion fault. Preferably, in this embodiment, the speed threshold is preferably 100rpm. In this embodiment, the differential threshold is preferably 50rpm.

[0072] Optionally, in a clutch fault diagnosis method in this embodiment, when the clutch adhesion fault result is an adhesion fault, a fault resolution strategy is executed. The fault resolution strategy includes one or more of the following combinations: 1. Control the instrument to display a clutch fault and control the vehicle to stop. 2. Limit the output torque at the wheel end and reduce the vehicle speed until the vehicle stops. 3. Control the vehicle to stop and automatically shift to P gear after stopping. 4. Control the vehicle to turn on the fault indicator light.

[0073] The clutch fault diagnosis method described above obtains the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state. And according to the vehicle state, it is determined whether the target vehicle meets the triggering conditions for clutch fault detection. When the triggering conditions for clutch fault detection are met, the clutch master-slave speed difference of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle, and the clutch adhesion fault result of the target vehicle can be accurately determined according to the engine speed and the clutch master-slave speed difference. Based on this application, it is possible to quickly and accurately determine whether the clutch has an adhesion fault, and it is convenient to handle the clutch adhesion fault (i.e., ablation fault) in a timely manner, which greatly improves the safety of the target vehicle when driving.

[0074] In one embodiment, in order to more accurately determine whether the target vehicle meets the clutch fault detection triggering condition, such as Figure 3 As shown, an optional implementation of S202 includes:

[0075] S301, when the sport mode is the pure electric mode, the running state is the sport state, and the fault state is the non-fault state, determining that the target vehicle meets the triggering condition for clutch fault detection.

[0076] Optionally, the target vehicle in this embodiment includes three sports modes, namely pure electric mode (also called EV mode), series mode and parallel mode. In the series mode, although there will be a low speed difference between the master and slave ends of the clutch, it is impossible to confirm whether the cause of the low speed difference is caused by the clutch adhesion failure or the engine power generation demand. In the parallel mode, there is naturally no speed difference between the master and slave ends of the clutch, so it is impossible to determine whether the clutch has an adhesion failure. Therefore, only in the pure electric mode can it be accurately determined whether the clutch of the target vehicle has an adhesion failure.

[0077] In this embodiment, when the power-on time of the target vehicle exceeds the time threshold and the current vehicle speed is greater than the vehicle speed threshold, the running state is determined to be the moving state. In this embodiment, the time threshold is preferably 0.5S. The vehicle speed threshold is preferably 10kph.

[0078] In this embodiment, when the vehicle speed signal of the target vehicle indicates no fault, the engine speed signal indicates no fault, the drive motor speed signal indicates no fault, and the clutch control system indicates no fault, the fault state is determined to be a no fault state. Among them, the vehicle speed signal indicates no fault means that the vehicle speed signal represents that the vehicle speed display is normal and the vehicle speed signal has no fault. The engine speed information indicates no fault means that the engine speed display is normal and there is no fault. The clutch control system indicates no fault means that the clutch control system is normal and there is no fault.

[0079] In this embodiment, when the motion mode is the pure electric mode, the operating state is the motion state, and the fault state is the non-fault state, it is determined that the target vehicle meets the trigger conditions for clutch fault detection. Based on this embodiment, the trigger conditions for clutch fault detection can be determined based on the motion mode, operating state and fault state, which improves the diagnostic efficiency of clutch fault diagnosis and avoids waste of vehicle computing resources based on the trigger conditions.

[0080] In one embodiment, in order to more accurately determine the clutch master and slave end speed difference, as Figure 4 As shown, an optional implementation of S203 includes:

[0081] S401: Taking the ratio between the driving motor rotation speed and the driving motor path speed ratio as the first value.

[0082] The path speed ratio refers to the speed ratio between different transmission paths. It is generally used to describe the speed change relationship between different gears or transmission components during the process of power being transmitted from the engine to the wheels. The first value refers to a value determined based on the drive motor speed and the drive motor path speed ratio.

[0083] S402: The product of the first value and the engine path speed ratio is used as the second value.

[0084] The second value refers to a value determined based on the first value and the engine path speed ratio, and specifically refers to a result obtained by multiplying the first value and the engine path speed ratio.

[0085] Optionally, in this embodiment, the product of the first value and the absolute value of the engine path speed ratio is used as the second value.

[0086] S403, taking the difference between the engine speed and the second value as the clutch master and slave end speed difference of the target vehicle.

[0087] Optionally, in this embodiment, the difference obtained by subtracting the second value from the engine speed is used as the speed difference between the master and slave ends of the clutch of the target vehicle.

[0088] Optionally, in this embodiment, the clutch master and slave speed difference of the target vehicle can be determined according to the following formula (1):

[0089] Clutch master-slave speed difference = engine speed - drive motor speed / drive motor path speed ratio * absolute value of engine path speed ratio (1)

[0090] In this embodiment, the ratio between the driving motor speed and the driving motor path speed ratio is used as the first value. The product of the first value and the engine path speed ratio is used as the second value. The difference between the engine speed and the second value is used as the clutch master-slave end speed difference of the target vehicle. Based on this embodiment, the accuracy of the clutch master-slave end speed difference is effectively improved, thereby improving the accuracy of clutch fault detection.

[0091] In one embodiment, if Figure 5 As shown, another optional implementation of the clutch fault diagnosis method includes:

[0092] S501, obtaining the motion mode, operating state and fault state of the target vehicle.

[0093] S502: When the power-on time of the target vehicle exceeds the time threshold and the current vehicle speed is greater than the vehicle speed threshold, it is determined that the running state is a moving state.

[0094] S503, when the vehicle speed signal of the target vehicle indicates no fault, the engine speed signal indicates no fault, the drive motor speed signal indicates no fault, and the clutch control system indicates no fault, the fault state is determined to be a no-fault state.

[0095] S504, when the sport mode is the pure electric mode, the running state is the sport state, and the fault state is the non-fault state, determining that the target vehicle meets the triggering condition for clutch fault detection.

[0096] S505: When it is determined that the target vehicle meets the triggering condition for clutch fault detection, a ratio between the driving motor speed and the driving motor path speed ratio is used as a first value.

[0097] S506: The product of the first value and the engine path speed ratio is used as the second value.

[0098] S507: The difference between the engine speed and the second value is used as the clutch master and slave end speed difference of the target vehicle.

[0099] S508: When the engine speed is greater than the speed threshold and the speed difference between the master and slave ends of the clutch is less than the speed difference threshold, it is determined that the clutch adhesion fault result of the target vehicle is an adhesion fault.

[0100] In this embodiment, the vehicle state of the target vehicle is obtained; wherein the vehicle state includes a motion mode, an operating state, and a fault state. And according to the vehicle state, it is determined whether the target vehicle meets the triggering conditions for clutch fault detection. When the triggering conditions for clutch fault detection are met, the clutch master-slave speed difference of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle, and the clutch adhesion fault result of the target vehicle can be accurately determined according to the engine speed and the clutch master-slave speed difference. Based on this application, it is possible to quickly and accurately determine whether the clutch has an adhesion fault, and it is convenient to handle the clutch adhesion fault (i.e., ablation fault) in a timely manner, which greatly improves the safety of the target vehicle when driving.

[0101] Based on the same inventive concept, the embodiment of the present application also provides a clutch fault diagnosis device for implementing the clutch fault diagnosis 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 clutch fault diagnosis device embodiment provided below can refer to the limitations of the clutch fault diagnosis method above, and will not be repeated here.

[0102] In one embodiment, if Figure 6 As shown, a clutch fault diagnosis device 1 is provided, comprising:

[0103] The acquisition module 10 is used to acquire the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state and a fault state;

[0104] A first determination module 20, for determining whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state;

[0105] A second determination module 30 is used to determine the clutch master and slave end speed difference of the target vehicle according to the engine speed and the drive motor speed of the target vehicle if the conditions are met;

[0106] The third determination module 40 is used to determine the clutch adhesion fault result of the target vehicle according to the engine speed and the clutch master and slave end speed difference.

[0107] In one embodiment, the Figure 6 The first determining module 10 is also specifically used for:

[0108] When the sport mode is the pure electric mode, the running state is the sport state, and the fault state is the non-fault state, it is determined that the target vehicle meets the triggering conditions for clutch fault detection.

[0109] Based on the above embodiments, Figure 6 The clutch fault diagnosis device 1 further comprises:

[0110] A first determination module is used to determine that the running state is a moving state when the power-on time of the target vehicle exceeds a time threshold and the current vehicle speed is greater than a vehicle speed threshold;

[0111] The second determination module is used to determine that the fault state is a non-fault state when the vehicle speed signal of the target vehicle indicates no fault, the engine speed signal indicates no fault, the drive motor speed signal indicates no fault, and the clutch control system indicates no fault.

[0112] In one embodiment, the Figure 6 The second determining module 20 in the embodiment is further specifically configured to:

[0113] The ratio between the driving motor speed and the driving motor path speed ratio is used as the first value;

[0114] The product of the first value and the engine path speed ratio is used as the second value;

[0115] The difference between the engine speed and the second value is used as the clutch master and slave end speed difference of the target vehicle.

[0116] In one embodiment, the Figure 6 The third determination module 30 in is further specifically used for:

[0117] The clutch adhesion fault result of the target vehicle is determined based on the size relationship between the engine speed and the speed threshold, and the size relationship between the speed difference between the clutch master and slave ends and the speed difference threshold.

[0118] In one embodiment, the Figure 6 The third determination module 30 in is further specifically used for:

[0119] When the engine speed is greater than the speed threshold and the speed difference between the master and slave ends of the clutch is less than the speed difference threshold, it is determined that the clutch adhesion fault result of the target vehicle is a adhesion fault.

[0120] Each module in the clutch fault diagnosis 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 operations corresponding to each module.

[0121] In one embodiment, a computer device is provided, whose internal structure diagram can be as follows: Figure 7 As 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 the 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 clutch fault diagnosis 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.

[0122] Those skilled in the art will understand that Figure 7 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.

[0123] 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:

[0124] Obtaining the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state;

[0125] Determine whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state;

[0126] If the conditions are met, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle;

[0127] The clutch sticking fault result of the target vehicle is determined based on the engine speed and the speed difference between the clutch master and slave ends.

[0128] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining whether the target vehicle meets the triggering condition for clutch fault detection according to the vehicle state, including:

[0129] When the sport mode is the pure electric mode, the running state is the sport state, and the fault state is the non-fault state, it is determined that the target vehicle meets the triggering conditions for clutch fault detection.

[0130] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0131] When the power-on time of the target vehicle exceeds the time threshold and the current vehicle speed is greater than the vehicle speed threshold, the running state is determined to be a moving state;

[0132] When the vehicle speed signal of the target vehicle indicates no fault, the engine speed signal indicates no fault, the drive motor speed signal indicates no fault, and the clutch control system indicates no fault, the fault state is determined to be a no-fault state.

[0133] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining the clutch master and slave speed difference of the target vehicle according to the engine speed and the drive motor speed of the target vehicle, including:

[0134] The ratio between the driving motor speed and the driving motor path speed ratio is used as the first value;

[0135] The product of the first value and the engine path speed ratio is used as the second value;

[0136] The difference between the engine speed and the second value is used as the clutch master and slave end speed difference of the target vehicle.

[0137] In one embodiment, when the processor executes the computer program, the following steps are further implemented: determining the clutch adhesion fault result of the target vehicle according to the engine speed and the clutch master and slave end speed difference, including:

[0138] The clutch adhesion fault result of the target vehicle is determined based on the size relationship between the engine speed and the speed threshold, and the size relationship between the speed difference between the clutch master and slave ends and the speed difference threshold.

[0139] In one embodiment, when the processor executes the computer program, the following steps are further implemented: according to the magnitude relationship between the engine speed and the speed threshold, and the magnitude relationship between the clutch master and slave end speed difference and the speed difference threshold, the clutch adhesion fault result of the target vehicle is determined, including:

[0140] When the engine speed is greater than the speed threshold and the speed difference between the master and slave ends of the clutch is less than the speed difference threshold, it is determined that the clutch adhesion fault result of the target vehicle is a adhesion fault.

[0141] 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:

[0142] Obtaining the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state;

[0143] Determine whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state;

[0144] If the conditions are met, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle;

[0145] The clutch sticking fault result of the target vehicle is determined based on the engine speed and the speed difference between the clutch master and slave ends.

[0146] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining whether the target vehicle meets the triggering condition for clutch fault detection according to the vehicle state, including:

[0147] When the sport mode is the pure electric mode, the running state is the sport state, and the fault state is the non-fault state, it is determined that the target vehicle meets the triggering conditions for clutch fault detection.

[0148] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0149] When the power-on time of the target vehicle exceeds the time threshold and the current vehicle speed is greater than the vehicle speed threshold, the running state is determined to be a moving state;

[0150] When the vehicle speed signal of the target vehicle indicates no fault, the engine speed signal indicates no fault, the drive motor speed signal indicates no fault, and the clutch control system indicates no fault, the fault state is determined to be a no-fault state.

[0151] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the clutch master and slave speed difference of the target vehicle according to the engine speed and the drive motor speed of the target vehicle, including:

[0152] The ratio between the driving motor speed and the driving motor path speed ratio is used as the first value;

[0153] The product of the first value and the engine path speed ratio is used as the second value;

[0154] The difference between the engine speed and the second value is used as the clutch master and slave end speed difference of the target vehicle.

[0155] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the clutch adhesion fault result of the target vehicle according to the engine speed and the clutch master and slave end speed difference, including:

[0156] The clutch adhesion fault result of the target vehicle is determined based on the size relationship between the engine speed and the speed threshold, and the size relationship between the speed difference between the clutch master and slave ends and the speed difference threshold.

[0157] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: according to the magnitude relationship between the engine speed and the speed threshold, and the magnitude relationship between the clutch master and slave end speed difference and the speed difference threshold, the clutch adhesion fault result of the target vehicle is determined, including:

[0158] When the engine speed is greater than the speed threshold and the speed difference between the master and slave ends of the clutch is less than the speed difference threshold, it is determined that the clutch adhesion fault result of the target vehicle is a adhesion fault.

[0159] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0160] Obtaining the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state;

[0161] Determine whether the target vehicle meets the clutch fault detection triggering condition according to the vehicle state;

[0162] If the conditions are met, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle;

[0163] The clutch sticking fault result of the target vehicle is determined based on the engine speed and the speed difference between the clutch master and slave ends.

[0164] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining whether the target vehicle meets the triggering condition for clutch fault detection according to the vehicle state, including:

[0165] When the sport mode is the pure electric mode, the running state is the sport state, and the fault state is the non-fault state, it is determined that the target vehicle meets the triggering conditions for clutch fault detection.

[0166] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0167] When the power-on time of the target vehicle exceeds the time threshold and the current vehicle speed is greater than the vehicle speed threshold, the running state is determined to be a moving state;

[0168] When the vehicle speed signal of the target vehicle indicates no fault, the engine speed signal indicates no fault, the drive motor speed signal indicates no fault, and the clutch control system indicates no fault, the fault state is determined to be a no-fault state.

[0169] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the clutch master and slave speed difference of the target vehicle according to the engine speed and the drive motor speed of the target vehicle, including:

[0170] The ratio between the driving motor speed and the driving motor path speed ratio is used as the first value;

[0171] The product of the first value and the engine path speed ratio is used as the second value;

[0172] The difference between the engine speed and the second value is used as the clutch master and slave end speed difference of the target vehicle.

[0173] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: determining the clutch adhesion fault result of the target vehicle according to the engine speed and the clutch master and slave end speed difference, including:

[0174] The clutch adhesion fault result of the target vehicle is determined based on the size relationship between the engine speed and the speed threshold, and the size relationship between the speed difference between the clutch master and slave ends and the speed difference threshold.

[0175] In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: according to the magnitude relationship between the engine speed and the speed threshold, and the magnitude relationship between the clutch master and slave end speed difference and the speed difference threshold, the clutch adhesion fault result of the target vehicle is determined, including:

[0176] When the engine speed is greater than the speed threshold and the speed difference between the master and slave ends of the clutch is less than the speed difference threshold, it is determined that the clutch adhesion fault result of the target vehicle is a adhesion fault.

[0177] 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.

[0178] The technical features of the above embodiments may be arbitrarily combined. 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.

[0179] 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 clutch fault diagnosis method, characterized in that: The method comprises: Acquire the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state; Determining whether the target vehicle meets a clutch fault detection trigger condition according to the vehicle state; If the conditions are met, the speed difference between the clutch master and slave ends of the target vehicle is determined according to the engine speed and the drive motor speed of the target vehicle; The clutch adhesion fault result of the target vehicle is determined according to the engine speed and the speed difference between the master and slave ends of the clutch.

2. The method according to claim 1, characterized in that The step of determining whether the target vehicle satisfies a clutch fault detection trigger condition according to the vehicle state includes: When the sport mode is the pure electric mode, the running state is the sport state, and the fault state is the non-fault state, it is determined that the target vehicle meets the triggering condition for clutch fault detection.

3. The method according to claim 2, characterized in that The method further comprises: When the power-on time of the target vehicle exceeds a time threshold and the current vehicle speed is greater than a vehicle speed threshold, determining that the running state is a moving state; When the vehicle speed signal of the target vehicle indicates no fault, the engine speed signal indicates no fault, the drive motor speed signal indicates no fault, and the clutch control system indicates no fault, the fault state is determined to be a no-fault state.

4. The method according to claim 1, characterized in that Determining the clutch master and slave speed difference of the target vehicle according to the engine speed and the drive motor speed of the target vehicle includes: Taking the ratio between the driving motor speed and the driving motor path speed ratio as the first value; The product of the first value and the engine path speed ratio is used as the second value; The difference between the engine speed and the second value is used as the clutch master and slave end speed difference of the target vehicle.

5. The method according to claim 1, characterized in that The step of determining the clutch adhesion fault result of the target vehicle according to the engine speed and the clutch master and slave end speed difference comprises: The clutch adhesion fault result of the target vehicle is determined based on the magnitude relationship between the engine speed and the speed threshold, and the magnitude relationship between the speed difference between the master and slave ends of the clutch and the speed difference threshold.

6. The method according to claim 1, characterized in that Determining the clutch adhesion fault result of the target vehicle according to the magnitude relationship between the engine speed and the speed threshold, and the magnitude relationship between the clutch master and slave end speed difference and the speed difference threshold, includes: When the engine speed is greater than the speed threshold and the speed difference between the master and slave ends of the clutch is less than the speed difference threshold, the clutch adhesion fault result of the target vehicle is determined to be an adhesion fault.

7. A clutch fault diagnosis device, characterized in that: The device comprises: An acquisition module, used to acquire the vehicle state of the target vehicle; wherein the vehicle state includes a motion mode, an operating state, and a fault state; A first determination module, used to determine whether the target vehicle meets the triggering condition of clutch fault detection according to the vehicle state; A second determination module is used to determine the clutch master and slave end speed difference of the target vehicle according to the engine speed and the drive motor speed of the target vehicle if the conditions are met; The third determination module is used to determine the clutch adhesion fault result of the target vehicle according to the engine speed and the speed difference between the master and slave ends of the clutch.

8. 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 clutch fault diagnosis method according to any one of claims 1 to 6 are implemented.

9. 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 clutch fault diagnosis method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the clutch fault diagnosis method according to any one of claims 1 to 6 are implemented.

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