AMT clutch fault detection method, system and device and storage medium

Abstract

The invention relates to the technical field of automobile transmissions, and particularly discloses an AMT clutch fault detection method, system and device and a storage medium, and the method comprises the steps that the current state of a vehicle is monitored in real time, and the current state comprises the vehicle speed, the engine rotating speed and the transmission input shaft rotating speed; when the vehicle state meets the preset clutch fault detection condition, a clutch rapid combination valve is controlled to conduct air inflow so that the clutch can be located at the complete combination position; reading the current engine rotation speed and the transmission input shaft rotation speed; a low-speed separating valve and a high-speed separating valve of the clutch are respectively controlled to gradually separate the clutch; in the clutch separation process, the clutch displacement value, the clutch friction plate temperature value, the engine rotating speed and a transmission input shaft rotating speed signal are monitored in real time, whether the clutch breaks down or not is judged, and the clutch fault point is locked. According to the scheme, different types of faults, fault points and fault levels can be accurately locked, misjudgment is reduced, and the safety and stability of vehicle operation are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile transmissions, and in particular to an AMT clutch fault detection method, system, device and storage medium. Background Art

[0002] With the continuous advancement of automotive technology, automated manual transmissions (AMTs) are gaining increasing attention and adoption, combining the high efficiency of manual transmissions with the convenience of automatic transmissions. As a key component in AMTs, the clutch's performance and reliability are crucial to the proper operation of the vehicle. However, clutch failures can occur during use, such as clutch plate wear, incomplete clutch disengagement, and clutch slippage. These failures can affect the vehicle's power transmission efficiency, drivability, and safety.

[0003] Currently, AMT clutch fault detection methods have the following main problems: 1. High detection cost: Traditional clutch fault detection methods usually need to be performed on a test bench, which requires the installation of components such as the flywheel and clutch. The detection cost is high, and the test bench structure is complex and cumbersome to operate. 2. Low detection efficiency: Existing clutch fault detection methods mostly rely on manual inspection or simple sensor signal judgment, which has low detection efficiency and makes it difficult to accurately determine the specific location and cause of the fault. 3. Insufficient detection accuracy: Existing clutch fault detection methods can often only detect surface faults of the clutch during the detection process. It is difficult to accurately detect some deeper faults, such as internal wear of the clutch friction plate. Summary of the Invention

[0004] Based on this, it is necessary to provide an AMT clutch fault detection method, system, equipment and storage medium to address the above problems, so as to solve the problems of high cost, low efficiency and insufficient accuracy in the existing AMT clutch fault detection methods.

[0005] To achieve the above object, the present invention provides the following technical solutions:

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

[0007] Real-time monitoring of the vehicle's current status, including vehicle speed, engine speed, and transmission input shaft speed;

[0008] When the vehicle state meets the preset clutch fault detection conditions, the clutch quick engagement valve is controlled to intake air so that the clutch is in a fully engaged position;

[0009] Read the current engine speed and transmission input shaft speed;

[0010] The clutch slow release valve and fast release valve are controlled separately to gradually release the clutch; during the clutch release process, the clutch displacement value, clutch friction plate temperature value, engine speed and transmission input shaft speed signal are monitored in real time to determine whether the clutch is faulty and lock the clutch fault point.

[0011] Optionally, the preset clutch fault detection conditions include: the vehicle is stationary, the engine is idling, and the air pressure of the vehicle air source is not lower than a set value.

[0012] Optionally, determining whether a clutch failure occurs includes:

[0013] Determining by comparison whether the engine speed and the transmission input shaft speed are equal;

[0014] If the engine speed is not equal to the transmission input shaft speed, the clutch is judged to be slipping and failing, and the fault level is high;

[0015] If the engine speed is equal to the transmission input shaft speed, the clutch slow release valve intake is controlled, the valve opening is adjusted to the preset angle threshold according to the PWM duty cycle, and clutch displacement monitoring is performed.

[0016] Optionally, performing clutch displacement monitoring includes:

[0017] When the clutch displacement reaches the set position, the air intake is stopped, and after the set time ts1, the engine idle speed ne1 and the transmission input shaft speed nt1 are collected;

[0018] Perform clutch fault determination based on the difference between the engine idle speed ne1 and the transmission input shaft speed nt1 collected after waiting for the set time ts1;

[0019] If ne1-nt1≤ns1, the guide bearing is judged to be seriously stuck and the fault level is high;

[0020] If ne1-nt1 > ns2, the clutch is judged to be functioning normally;

[0021] If ns1 < ne1 - nt1 ≤ ns2, monitor the clutch friction plate temperature change and perform a fault determination based on the monitoring result of the clutch friction plate temperature change;

[0022] After completing the clutch fault determination, the clutch quick engagement valve is controlled to reset, and the re-inspection process is started to obtain the clutch fault determination result; among them, ns1 and ns2 are both preset speed deviation thresholds, and ns2 > ns1 > 0.

[0023] Optionally, the fault determination based on the monitoring result of the clutch friction plate temperature change includes:

[0024] When T2≤T1, it is determined that the guide bearing is generally stuck and the fault level is low;

[0025] When T2 > T1, it is determined that the clutch has a mechanical fault and the fault level is high;

[0026] Among them, T1 and T2 are the clutch friction plate temperature in the previous second and the clutch friction plate temperature in the next second respectively collected by the sensor.

[0027] Optionally, the review process includes:

[0028] Control the air intake of the clutch quick release valve and adjust the valve opening to 0.2k% according to the PWM duty cycle to perform the release operation; where k% is the preset angle threshold;

[0029] The clutch displacement monitoring and clutch fault judgment logic are executed repeatedly.

[0030] Optionally, the method further includes:

[0031] If the initial fault determination is consistent with the fault determination result obtained by the retest, the corresponding fault information is output to the instrument panel;

[0032] If the fault determination results obtained in the first fault determination are inconsistent with those obtained in the re-inspection, a third test is performed according to the above fault determination method, and the third result is output as the final result. The fault detection information corresponding to the clutch fault determination result is transmitted to the vehicle instrument for display.

[0033] In a second aspect, the present application further provides an AMT clutch fault detection system, the system comprising:

[0034] The transmission control unit is used to monitor the current status of the vehicle in real time, including vehicle speed, engine speed, and transmission input shaft speed;

[0035] A clutch control unit, configured to control the air intake of the clutch quick engagement valve to fully engage the clutch when the vehicle state satisfies a preset clutch fault detection condition;

[0036] A reading unit, used to read the current engine speed and transmission input shaft speed;

[0037] The clutch fault judgment unit is used to control the clutch slow release valve and the fast release valve respectively to gradually release the clutch; during the clutch release process, the clutch displacement value, the clutch friction plate temperature value, the engine speed and the transmission input shaft speed signal are monitored in real time to determine whether the clutch has failed and lock the clutch fault point.

[0038] In a third aspect, the present application provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any one of the methods described in the first aspect when executing the computer program.

[0039] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of any one of the methods in the first aspect when executed by a processor.

[0040] The beneficial effects of the present invention are embodied in:

[0041] The above-mentioned AMT clutch fault detection method, system, equipment and storage medium can accurately lock different types of faults, fault points and fault levels such as clutch slippage, guide bearing sticking, and abnormal sliding between the pressure plate and friction plate, thereby reducing misjudgment.

[0042] At the same time, a re-inspection and three-test mechanism is adopted. If the two judgment results are inconsistent, a third test is performed and the third result is used as the final result. This effectively avoids single-test errors and ensures the accuracy of fault judgment. After the fault point is determined, the fault detection information corresponding to the clutch fault judgment result can be transmitted to the vehicle instrument for display. Through human-computer interaction, it is convenient for drivers and maintenance personnel to understand the fault situation in a timely manner, helping to prevent the fault from worsening in advance, reducing vehicle maintenance costs, improving vehicle maintenance efficiency, and ensuring the safety and stability of vehicle operation.

[0043] The AMT clutch fault detection method, system, and device described in this invention eliminate the need for complex installation and commissioning on a test bench, reducing testing costs and time. By monitoring multiple key signals in real time, the system can quickly and accurately determine the clutch fault state, improving detection efficiency. By monitoring multiple signals, including clutch friction plate temperature, clutch displacement, engine speed, and transmission input shaft speed, the system can more comprehensively and accurately determine the clutch fault state, improving detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0045] Figure 1 A general flow chart of an AMT clutch fault detection method provided by the present invention;

[0046] Figure 2A schematic diagram of the execution process of an AMT clutch fault detection method provided by the present invention;

[0047] Figure 3 A schematic structural diagram of an AMT clutch fault detection system provided by the present invention;

[0048] Figure 4 This is a structural diagram of a computer device provided by the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0050] To address the challenges of the existing technology, the present invention provides an efficient, accurate, and low-cost method, system, device, and storage medium for detecting clutch faults in automated manual transmissions (AMTs), primarily for use in vehicle-mounted devices. This method can be applied to terminals, servers, or entire vehicle systems comprising both terminals and servers, and implemented through interaction between the terminals and servers. Terminals include, but are not limited to, various personal computers, laptops, smartphones, tablets, and the like.

[0051] The following embodiment takes the automobile end as an example to elaborate on the design process of this method.

[0052] In one embodiment, Figure 1 As shown, an embodiment of the present invention provides an AMT clutch fault detection method, the method comprising the following steps:

[0053] S101 monitors the vehicle's current status in real time, including vehicle speed, engine speed, and transmission input shaft speed;

[0054] S102: When the vehicle state meets the preset clutch fault detection conditions, control the clutch quick engagement valve to intake air so that the clutch is in a fully engaged position;

[0055] S103 reads the current engine speed and transmission input shaft speed;

[0056] S104 controls the clutch slow release valve and fast release valve respectively to gradually release the clutch; during the clutch release process, it monitors the clutch displacement value, clutch friction plate temperature value, engine speed and transmission input shaft speed signal in real time to determine whether the clutch is faulty and lock the clutch fault point.

[0057] In the above step S101 , the preset clutch fault detection conditions include: the vehicle is stationary, the engine is idling, and the air pressure of the vehicle air source is not lower than a set value.

[0058] In the above step S104, determining whether the clutch fails includes:

[0059] Determining by comparison whether the engine speed and the transmission input shaft speed are equal;

[0060] If the engine speed is not equal to the transmission input shaft speed, the clutch is judged to be slipping and failing, and the fault level is high;

[0061] If the engine speed is equal to the transmission input shaft speed, the clutch slow release valve intake is controlled, and the valve opening is adjusted to the preset angle threshold k% according to the PWM duty cycle to ensure that the clutch release speed is not too fast; and clutch displacement monitoring is performed.

[0062] In the above embodiment, performing clutch displacement monitoring includes:

[0063] The clutch displacement value Y1 is collected in real time through the clutch displacement sensor. If Y1=Ys+3mm, the clutch slow release valve intake is immediately stopped; among them, Ys is the clutch friction point that the transmission control unit can read from the memory.

[0064] When the clutch displacement reaches the set position, i.e. Y1=Ys+3mm, the air intake is stopped; after waiting for the set time ts1, the engine idle speed ne1 and the transmission input shaft speed nt1 are collected;

[0065] The clutch fault is determined based on the difference between the engine idle speed ne1 and the transmission input shaft speed nt1 collected after the waiting time ts1. If ne1-nt1≤ns1, the guide bearing is determined to be severely stuck and the fault level is high.

[0066] If ne1-nt1 > ns2, the clutch is judged to be functioning normally;

[0067] Wherein, ns1 and ns2 are both preset speed deviation thresholds, ns1 is the first setting parameter, ns2 is the second setting parameter; and ns2 > ns1 > 0;

[0068] If ns1 < ne1 - nt1 ≤ ns2, monitor the clutch friction plate temperature change and perform a fault determination based on the monitoring result of the clutch friction plate temperature change;

[0069] After the clutch fault determination is completed, the clutch quick engagement valve is controlled to reset, and the re-inspection process is started to obtain the clutch fault determination result.

[0070] Specifically, if ns1 < ne1 - nt1 ≤ ns2, the sensor collects the clutch friction plate temperature T1 and the clutch friction plate temperature T2 one second after the second. If T2 ≤ T1, it indicates that there is no friction between the clutch pressure plate and the friction plate. The guide bearing at the junction of the transmission input shaft and the engine flywheel is generally stuck, and the fault level is low. ns2 is the second set parameter.

[0071] If ns1<ne1-nt1≤ns2 is satisfied, the clutch friction plate temperature T1 in the previous second and the clutch friction plate temperature T2 in the next second are collected through the sensor. If T2>T1, it is determined that abnormal slippage occurs between the clutch pressure plate and the friction plate, and the clutch has mechanical faults such as "flash" and "burrs", and the fault level is high.

[0072] If ne1-nt1>ns2 is satisfied, it is determined that the clutch function is normal.

[0073] In the above embodiment, the fault determination based on the monitoring result of the clutch friction plate temperature change includes:

[0074] The clutch friction plate temperature T1 in the previous second and the clutch friction plate temperature T2 in the next second are collected by the sensor;

[0075] When T2≤T1, it is determined that the guide bearing is generally stuck and the fault level is low;

[0076] When T2 > T1, it is determined that the clutch has a mechanical fault and the fault level is high;

[0077] Among them, T1 and T2 are the clutch friction plate temperature in the previous second and the clutch friction plate temperature in the next second respectively collected by the sensor.

[0078] The review process includes:

[0079] Control the air intake of the clutch quick release valve and adjust the valve opening to 0.2k% according to the PWM duty cycle to perform the release operation; where k% is the preset angle threshold;

[0080] The clutch displacement monitoring and clutch fault judgment logic are executed repeatedly.

[0081] In addition, after performing the re-inspection process, the method further includes:

[0082] If the initial fault determination is consistent with the fault determination result obtained by the retest, the corresponding fault information is output to the instrument panel;

[0083] If the fault determination results obtained in the first fault determination are inconsistent with those obtained in the re-inspection, a third test is performed according to the above fault determination method, and the third result is output as the final result. The fault detection information corresponding to the clutch fault determination result is transmitted to the vehicle instrument for display.

[0084] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0085] In order to make the technical problem to be solved by the present invention clearer, the following description will be given in conjunction with the accompanying drawings and specific embodiments.

[0086] like Figure 2 The present invention relates to an AMT clutch fault detection method, characterized by an AMT clutch fault detection method. The method comprises obtaining the current vehicle state. When the vehicle is stationary and the engine is idling, first controlling the clutch quick engagement valve to fully engage the clutch, then controlling the clutch slow release valve and quick release valve to gradually disengage the clutch. During the clutch disengagement process, the clutch friction plate temperature, clutch displacement, engine speed, and transmission input shaft speed signals are constantly monitored to determine whether a clutch fault has occurred and locate the clutch fault point. The fault detection information is then transmitted to the vehicle instrument panel for display.

[0087] AMT clutch fault detection requires that the vehicle is stationary and the engine is in idle state, and the vehicle air source pressure is not lower than the set value Ps. The air source pressure setting value varies slightly depending on the vehicle model and is generally 8 bar.

[0088] When it is determined that the clutch fault detection conditions are met, the clutch quick engagement valve is controlled to intake air so that the clutch is in the fully engaged position, and the current engine speed and transmission input shaft speed are read. If the two data are not equal, it is determined that the clutch has a slip failure fault and the fault level is high. If the two data are equal, continue to the next step.

[0089] Controls the clutch slow release valve's air intake, adjusting the valve opening to a set value (k%) based on the PWM duty cycle (typically 5% in this embodiment) to prevent excessive clutch disengagement. The clutch displacement sensor collects the clutch displacement value (Y1) in real time. If Y1 = Ys + 3mm, air intake to the clutch slow release valve is immediately stopped. Ys is the clutch friction point, which can be read from memory.

[0090] When the clutch position reaches the set position, after a set waiting time ts1, the transmission input shaft speed nt1 and the engine idle speed ne1 are measured. If ne1 - nt1 ≤ ns1, the guide bearing at the interface between the transmission input shaft and the engine flywheel is determined to be severely stuck, and the fault level is high. ns1 is the first set parameter, typically set to 20 rpm.

[0091] If ns1 < ne1 - nt1 ≤ ns2, the sensor collects the clutch friction plate temperature T1 and the clutch friction plate temperature T2 from the previous second. If T2 ≤ T1, indicating no friction between the clutch pressure plate and the friction plate, the guide bearing at the interface between the transmission input shaft and the engine flywheel is generally stuck, and the fault level is low. ns2 is the second setting parameter. This parameter varies depending on the engine model and is generally set to 80% of the engine idle speed.

[0092] If ns1<ne1-nt1≤ns2 is satisfied, the clutch friction plate temperature T1 in the previous second and the clutch friction plate temperature T2 in the next second are collected through the sensor. If T2>T1, it is determined that abnormal slippage occurs between the clutch pressure plate and the friction plate, and the clutch has mechanical faults such as "flash" and "burrs", and the fault level is high.

[0093] If ne1-nt1>ns2 is satisfied, it is determined that the clutch function is normal.

[0094] After the fault judgment is completed, the transmission control unit controls the clutch quick engagement valve intake to return the clutch to the fully engaged position, and starts the second re-inspection operation at the same time. The re-inspection operation is that the transmission control unit controls the clutch quick release valve intake and adjusts the valve opening to the set value of 0.2k% according to the PWM duty cycle. The remaining control process and judgment conditions are the same as the first detection method.

[0095] If the fault is determined to be the same twice, the transmission control unit sends the corresponding fault information to the vehicle instrument panel as a reminder. If the second fault determination result is different from the first fault determination result, a third fault detection must be performed. The third fault detection method is the same as the first fault detection method, and the third test result is based on the third test result and is output externally.

[0096] Based on the above specific implementation schemes, this application provides the following examples.

[0097] Embodiment 1: The embodiment of the present invention provides an AMT clutch fault detection method, comprising the following steps:

[0098] 1. Vehicle status monitoring:

[0099] The transmission control unit (TCU) monitors the vehicle's current status in real time, including vehicle speed, engine speed, transmission input shaft speed, etc.

[0100] When the vehicle is stationary and the engine is idling, proceed to the next step.

[0101] 2. Clutch control and monitoring:

[0102] The TCU controls the air intake of the clutch quick engagement valve to bring the clutch into the fully engaged position.

[0103] Subsequently, the TCU controls the clutch slow release valve and fast release valve respectively to gradually release the clutch.

[0104] During the clutch disengagement process, the TCU monitors the clutch friction plate temperature, clutch displacement, engine speed, and transmission input shaft speed signal in real time.

[0105] 3. Fault diagnosis and locking:

[0106] Based on the monitored signal, determine whether the clutch is faulty. The specific judgment criteria are as follows:

[0107] If the clutch friction plate temperature exceeds a preset threshold (e.g. 120°C), it is determined to be a clutch overheating fault.

[0108] If the clutch displacement value does not reach the preset position (for example, 10 mm) or the response time exceeds the preset time (for example, 5 seconds), it is determined that the clutch is not completely disengaged.

[0109] If the speed difference between the engine speed and the transmission input shaft speed exceeds a preset threshold (eg, 500 rpm), it is determined to be a clutch slip fault.

[0110] Lock the clutch fault point and transmit the fault detection information to the vehicle instrument for display.

[0111] Embodiment 2: The embodiment of the present invention provides an AMT clutch fault detection method, comprising the following steps:

[0112] 1. Vehicle status monitoring: The transmission control unit TCU monitors the current status of the vehicle in real time, including vehicle speed, engine speed, transmission input shaft speed, etc.

[0113] When the vehicle is stationary and the engine is idling, proceed to the next step.

[0114] 2. Clutch control and monitoring:

[0115] The TCU controls the air intake of the clutch quick engagement valve to bring the clutch into the fully engaged position.

[0116] Subsequently, the TCU controls the clutch slow release valve and fast release valve respectively to gradually release the clutch.

[0117] During the clutch disengagement process, the TCU monitors the clutch friction plate temperature, clutch displacement, engine speed, and transmission input shaft speed signal in real time.

[0118] 3. Fault diagnosis and locking:

[0119] Based on the monitored signal, determine whether the clutch is faulty. The specific judgment criteria are as follows:

[0120] If the clutch friction plate temperature exceeds a preset threshold (e.g. 150°C), it is determined to be a clutch overheating fault.

[0121] If the clutch displacement value does not reach the preset position (for example, 12 mm) or the response time exceeds the preset time (for example, 6 seconds), it is determined that the clutch is not completely disengaged.

[0122] If the speed difference between the engine speed and the transmission input shaft speed exceeds a preset threshold (eg, 600 rpm), it is determined to be a clutch slip fault.

[0123] Lock the clutch fault point and transmit the fault detection information to the vehicle instrument for display.

[0124] Embodiment 3: The embodiment of the present invention provides an AMT clutch fault detection method, comprising the following steps:

[0125] 1. Vehicle status monitoring:

[0126] The transmission control unit (TCU) monitors the vehicle's current status in real time, including vehicle speed, engine speed, transmission input shaft speed, etc.

[0127] When the vehicle is stationary and the engine is idling, proceed to the next step.

[0128] 2. Clutch Control and Monitoring: The TCU controls the air flow to the clutch's quick-engage valve, fully engaging the clutch. It then controls the clutch's slow-release valve and quick-release valve, gradually disengaging the clutch. During the clutch disengagement process, the TCU monitors clutch friction plate temperature, clutch displacement, engine speed, and transmission input shaft speed in real time.

[0129] 3. Fault diagnosis and locking: Determine whether the clutch has a fault based on the monitored signal. The specific judgment criteria are as follows: If the clutch friction plate temperature exceeds the preset threshold (for example, 180°C), it is determined to be a clutch overheating fault.

[0130] If the clutch displacement value does not reach the preset position (for example, 15 mm) or the response time exceeds the preset time (for example, 7 seconds), it is determined that the clutch is not completely disengaged.

[0131] If the speed difference between the engine speed and the transmission input shaft speed exceeds a preset threshold (e.g., 700 rpm), a clutch slip fault is detected. The clutch fault point is identified and the fault detection information is transmitted to the vehicle instrument panel for display.

[0132] Based on the same inventive concept, embodiments of the present application also provide an AMT clutch fault detection method and an AMT clutch fault detection system. The solution provided by this system is similar to the solution described in the aforementioned method. Therefore, the specific limitations in one or more of the following embodiments of the AMT clutch fault detection system can be found in the above-mentioned limitations on the AMT clutch fault detection method and will not be further elaborated here.

[0133] In one embodiment, Figure 3 As shown, an AMT clutch fault detection system is provided, comprising: a transmission control unit 210, a clutch control unit 220, a reading unit 230, and a clutch fault judgment unit 240, wherein:

[0134] The transmission control unit 210 is used to monitor the current state of the vehicle in real time, including vehicle speed, engine speed, and transmission input shaft speed;

[0135] The clutch control unit 220 is used to control the clutch quick engagement valve to enter the fully engaged position when the vehicle state meets the preset clutch fault detection conditions;

[0136] A reading unit 230 is used to read the current engine speed and transmission input shaft speed;

[0137] The clutch fault judgment unit 240 is used to control the clutch slow release valve and the fast release valve respectively to gradually release the clutch; during the clutch release process, the clutch displacement value, the clutch friction plate temperature value, the engine speed and the transmission input shaft speed signal are monitored in real time to determine whether the clutch has failed and lock the clutch fault point.

[0138] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any one of the methods S101-S104 are implemented.

[0139] In one embodiment, a computer device is also provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 4 As shown. The computer device includes a processor, memory, communication interface, display screen and input device connected through a system bus. Among them, 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 computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner. The wireless manner can be achieved through WIFI, mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, it realizes an AMT clutch fault detection method.

[0140] Those skilled in the art will understand that Figure 4 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 shown in the figure, or combine certain components, or have a different component arrangement.

[0141] It should be noted that the various technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various 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.

[0142] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for detecting an AMT clutch fault, characterized in that: The method comprises: Real-time monitoring of the vehicle's current status, including vehicle speed, engine speed, and transmission input shaft speed; When the vehicle state meets the preset clutch fault detection conditions, the clutch quick engagement valve is controlled to intake air so that the clutch is in the fully engaged position; Read the current engine speed and transmission input shaft speed; The clutch slow release valve and fast release valve are controlled separately to gradually release the clutch; during the clutch release process, the clutch displacement value, clutch friction plate temperature value, engine speed and transmission input shaft speed signal are monitored in real time to determine whether the clutch is faulty and lock the clutch fault point.

2. The method according to claim 1, characterized in that The preset clutch fault detection conditions include: the vehicle is stationary, the engine is idling, and the air pressure of the vehicle is not lower than a set value.

3. The method according to claim 1, characterized in that Determining whether a clutch failure occurs includes: Determining by comparison whether the engine speed and the transmission input shaft speed are equal; If the engine speed is not equal to the transmission input shaft speed, the clutch is judged to be slipping and failing, and the fault level is high; If the engine speed is equal to the transmission input shaft speed, the clutch slow release valve intake is controlled, the valve opening is adjusted to the preset angle threshold according to the PWM duty cycle, and clutch displacement monitoring is performed.

4. The method according to claim 3, characterized in that The clutch displacement monitoring includes: When the clutch displacement reaches the set position, the air intake is stopped, and after the set time ts1, the engine idle speed ne1 and the transmission input shaft speed nt1 are collected; Perform clutch fault determination based on the difference between the engine idle speed ne1 and the transmission input shaft speed nt1 collected after waiting for the set time ts1; If ne1-nt1≤ns1, the guide bearing is judged to be seriously stuck and the fault level is high; If ne1-nt1 > ns2, the clutch is judged to be functioning normally; If ns1 < ne1 - nt1 ≤ ns2, monitor the clutch friction plate temperature change and perform a fault determination based on the monitoring result of the clutch friction plate temperature change; After completing the clutch fault determination, the clutch quick engagement valve is controlled to reset, and the re-inspection process is started to obtain the clutch fault determination result; among them, ns1 and ns2 are both preset speed deviation thresholds, and ns2 > ns1 > 0.

5. The method according to claim 4, characterized in that The fault determination based on the monitoring result of the clutch friction plate temperature change includes: When T2≤T1, it is determined that the guide bearing is generally stuck and the fault level is low; When T2 > T1, it is determined that the clutch has a mechanical fault and the fault level is high; Among them, T1 and T2 are the clutch friction plate temperature in the previous second and the clutch friction plate temperature in the next second respectively collected by the sensor.

6. The method according to claim 4, characterized in that The review process includes: Control the air intake of the clutch quick release valve and adjust the valve opening to 0.2k% according to the PWM duty cycle to perform the release operation; where k% is the preset angle threshold; The clutch displacement monitoring and clutch fault judgment logic are executed repeatedly.

7. The method according to claim 6, characterized in that The method further comprises: If the initial fault determination is consistent with the fault determination result obtained by the retest, the corresponding fault information is output to the instrument panel; If the fault determination results obtained in the first fault determination are inconsistent with those obtained in the re-inspection, a third test is performed according to the above fault determination method, and the third result is output as the final result. The fault detection information corresponding to the clutch fault determination result is transmitted to the vehicle instrument for display.

8. An AMT clutch fault detection system, characterized in that: The system comprises: The transmission control unit is used to monitor the current status of the vehicle in real time, including vehicle speed, engine speed, and transmission input shaft speed; A clutch control unit, configured to control the air intake of the clutch quick engagement valve to fully engage the clutch when the vehicle state satisfies a preset clutch fault detection condition; A reading unit, used to read the current engine speed and transmission input shaft speed; The clutch fault judgment unit is used to control the clutch slow release valve and the fast release valve respectively to gradually release the clutch; during the clutch release process, the clutch displacement value, the clutch friction plate temperature value, the engine speed and the transmission input shaft speed signal are monitored in real time to determine whether the clutch has failed and lock the clutch fault point.

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 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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