Fault identification method and device for vehicle transmission and vehicle

Abstract

The present invention relates to a fault identification method, device and vehicle for a vehicle transmission, wherein the transmission is integrated with an automatic transmission control unit TCU, and the method comprises: when a transmission fault is detected, collecting TCU data at the time of the fault occurrence; acquiring first TCU related data of a first preset time before the time of the fault occurrence, and acquiring second TCU related data of a second preset time after the time of the fault occurrence; performing a fault reproduction test on the TCU using the TCU data, the first TCU related data and the second TCU related data, and identifying the fault cause of the TCU and / or generating a fault report of the TCU by the fault reproduction data. The method solves the problem that during fault troubleshooting and analysis, the transmission needs to be disassembled to further detect and confirm the true cause, which greatly increases the cost of fault troubleshooting, and is conducive to the rapid analysis of occasional faults, and reduces the problem analysis process of fault reproduction, offline disassembly and detection.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a method and device for identifying a fault of a vehicle transmission and a vehicle. Background Art

[0002] The 9AT automatic transmission consists of a torque converter, a planetary gear set and a hydraulic control system, which achieves speed and torque change through hydraulic transmission and gear combination. The electronic control system achieves 9 forward gears and 1 reverse gear by controlling 4 clutches and 2 brakes.

[0003] In related technologies, 9AT automatic transmissions generally use a built-in integrated TCU (Transmission Control Unit). The electronic control system completes the operation of the entire transmission actuator through four-way output drive, 11-way hydraulic system control solenoid valves, and 6 sensors. The TCU, hydraulic control valves and sensors are integrated and arranged inside the transmission, which simplifies the overall structure and reduces the weight and volume of the transmission.

[0004] However, since the transmission is an integrated structure, the electronic control system cannot be directly tested. In the later troubleshooting and analysis, it is often necessary to disassemble the transmission for further testing and confirmation of the true cause, which greatly increases the cost of troubleshooting and needs to be solved urgently. Summary of the invention

[0005] In view of this, the present invention aims to propose a vehicle transmission fault identification method, which solves the problem that the electronic control system cannot be directly detected in the related technology. In the later troubleshooting and analysis, it is often necessary to disassemble the transmission for further detection and confirmation of the true cause, which greatly increases the cost of troubleshooting. The method is conducive to the rapid analysis of occasional faults, reducing fault reproduction, offline disassembly and detection, and other problem analysis processes.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A fault identification method for a vehicle transmission, wherein the transmission is integrated with an automatic transmission control unit TCU, wherein the method comprises the following steps:

[0008] When a transmission failure is detected, TCU data at the time of the failure is collected;

[0009] While acquiring first TCU related data of a first preset time length before the fault occurs, acquiring second TCU related data of a second preset time length after the fault occurs;

[0010] Perform an online fault test on the TCU using the TCU data, the first TCU related data, and the second TCU related data, and identify the fault cause of the TCU and / or generate a fault report of the TCU based on the fault reproduction data.

[0011] Further, before the transmission failure is detected, the method includes:

[0012] receiving a fault triggering identifier sent by the transmission triggering fault condition;

[0013] Determining whether the fault triggering flag satisfies a TCU fault condition;

[0014] If the TCU failure condition is met, it is determined that the transmission has failed.

[0015] Furthermore, the collecting of TCU data at the time of the fault occurrence includes:

[0016] Acquire the TCU data from a fault data cache module;

[0017] The data identifier of the TCU data to be frozen is stored in the rotating buffer area with a preset continuous frozen data length.

[0018] Further, while acquiring the first TCU related data of a first preset time before the fault occurs, acquiring the second TCU related data of a second preset time after the fault occurs, includes:

[0019] Using the UDS service to read the TCU data to be frozen;

[0020] The first TCU-related data and the second TCU-related data are obtained based on the freeze frame analysis corresponding to the TCU data to be frozen.

[0021] Further, the obtaining the first TCU-related data and the second TCU-related data based on the freeze frame parsing corresponding to the TCU data to be frozen includes:

[0022] Convert hexadecimal TCU data into physical value or ASCII code value;

[0023] The transmission parameters within the first time period and the transmission processing data within the second preset time period are collected according to the physical values.

[0024] Compared with the prior art, the vehicle transmission fault identification method of the present invention has the following advantages:

[0025] The vehicle transmission fault identification method of the present invention can detect when a transmission fault occurs, collect TCU data at the time of the fault occurrence, and obtain first TCU related data of a first preset time before the fault occurrence, while obtaining second TCU related data of a second preset time after the fault occurrence, and use the TCU data, the first TCU related data and the second TCU related data to perform fault reproduction online test on the TCU, and identify the fault cause of the TCU and / or generate a TCU fault report based on the fault reproduction data. Thus, the problem that the electronic control system cannot be directly detected in the related technology, and the transmission often needs to be disassembled to further detect and confirm the true cause during the later fault troubleshooting and analysis, which greatly increases the cost of fault troubleshooting, is conducive to the rapid analysis of occasional faults, and reduces the problem analysis process of fault reproduction, offline disassembly and detection.

[0026] Another object of the present invention is to provide a vehicle transmission fault identification device, which solves the problem that the electronic control system cannot be directly detected in the related art, and the transmission often needs to be disassembled for further detection and confirmation of the true cause during the later fault detection and analysis, which greatly increases the cost of fault detection. It is conducive to the rapid analysis of occasional faults, reducing the problem analysis process of fault reproduction, offline disassembly and detection, etc.

[0027] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0028] A fault identification device for a vehicle transmission, wherein the transmission is integrated with an automatic transmission control unit TCU, wherein the device comprises:

[0029] The acquisition module is used to collect TCU data at the time of the failure when a transmission failure is detected;

[0030] An acquisition module, configured to acquire first TCU-related data of a first preset time before the fault occurs, and acquire second TCU-related data of a second preset time after the fault occurs;

[0031] An identification module is used to perform an online fault test on the TCU using the TCU data, the first TCU related data and the second TCU related data, and to identify the cause of the TCU fault by the fault reproduction data and / or generate a fault report of the TCU.

[0032] Furthermore, before the transmission failure is detected, the acquisition module is specifically used to:

[0033] receiving a fault triggering identifier sent by the transmission triggering fault condition;

[0034] Determining whether the fault triggering flag satisfies a TCU fault condition;

[0035] If the TCU failure condition is met, it is determined that the transmission has failed.

[0036] Furthermore, the acquisition module is specifically used for:

[0037] Acquire the TCU data from a fault data cache module;

[0038] The data identifier of the TCU data to be frozen is stored in the rotating buffer area with a preset continuous frozen data length.

[0039] Furthermore, the acquisition module is specifically used to:

[0040] Using the UDS service to read the TCU data to be frozen;

[0041] The first TCU-related data and the second TCU-related data are obtained based on the freeze frame analysis corresponding to the TCU data to be frozen.

[0042] Furthermore, the acquisition module is also used for:

[0043] Convert hexadecimal TCU data into physical values ​​or ASCII codes;

[0044] The transmission parameters within the first time period and the transmission processing data within the second preset time period are collected according to the physical values.

[0045] The advantages of the vehicle transmission fault identification device and the vehicle transmission fault identification method described above over the prior art are the same, and will not be described in detail here.

[0046] Another object of the present invention is to propose a vehicle that solves the problem in the related art that the electronic control system cannot be directly detected. In the later troubleshooting and analysis, it is often necessary to disassemble the transmission for further detection and confirmation of the true cause, which greatly increases the cost of troubleshooting. The vehicle is conducive to the rapid analysis of occasional faults, and reduces the problem analysis process of fault reproduction, offline disassembly and detection.

[0047] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0048] A vehicle is provided with the vehicle transmission fault identification device as described in the above embodiment.

[0049] The advantages of the vehicle and the above-mentioned vehicle transmission fault identification device over the prior art are the same, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0051] Figure 1 A flowchart of a method for identifying a fault of a vehicle transmission according to an embodiment of the present invention;

[0052] Figure 2 A schematic diagram of a fault processing flow of a fault identification system for a vehicle transmission according to an embodiment of the present invention;

[0053] Figure 3 A schematic diagram of a rotating cache area according to an embodiment of the present invention;

[0054] Figure 4 A schematic diagram of converting fault data into physical values ​​according to an embodiment of the present invention;

[0055] Figure 5 A schematic diagram of reading fault freeze frame data according to an embodiment of the present invention;

[0056] Figure 6 A schematic diagram of converting data into physical values ​​according to an embodiment of the present invention;

[0057] Figure 7 A flowchart of freezing fault cache data according to an embodiment of the present invention;

[0058] Figure 8 The present invention is a block diagram of a vehicle transmission fault identification device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0059] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0060] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0061] Figure 1 1 is a flow chart of a fault identification method for a vehicle transmission according to an embodiment of the present invention. In this embodiment, the transmission is integrated with an automatic transmission control unit TCU.

[0062] like Figure 1 As shown, the fault identification method of the vehicle transmission according to the embodiment of the present invention comprises the following steps:

[0063] Step S101, when a transmission failure is detected, TCU data at the time of the failure is collected.

[0064] In this embodiment, if Figure 2As shown, the vehicle transmission fault identification method of the embodiment of the present invention involves a vehicle transmission fault identification system which may include: a fault diagnosis module, a fault management module, a fault data cache module, a fault data freezing storage module, a fault freezing frame data module and a freezing frame data parsing module. Among them, the embodiment of the present invention can periodically (calibrate) detect whether the transmission has a fault through the fault diagnosis module, and when the transmission is detected to have a fault, collect TCU data at the time of the fault.

[0065] As a possible implementation method, in some embodiments, collecting TCU data at the time of fault occurrence includes: obtaining TCU data from a fault data cache module; storing data identifiers of TCU data to be frozen in a rotating cache area with a preset continuous frozen data length.

[0066] The preset continuous freezing data length may be a data length preset by a user, a data length obtained through a limited number of experiments, or a data length obtained through a limited number of computer simulations, which is not specifically limited here.

[0067] It should be understood that the fault data cache module periodically (calibrable) stores fault-related data. Therefore, when collecting TCU data at the time of fault occurrence, the embodiment of the present invention can obtain TCU data from the fault data cache module and store the fault data in a rotating cache manner according to the DID (Data Identifiers) of the TCU data to be frozen and the preset continuous frozen data length.

[0068] Among them, the rotating buffer area can be as follows Figure 3 As shown, DID number 0 is the data identifier of the first fault cache data, DID number 1 is the data identifier of the second fault cache data, DID number 2 is the data identifier of the third fault cache data, ..., DID number Dmax-1 is the data identifier of the Dmax-th fault cache data, and Dmax is the maximum value of the data identifier of the fault cache data. For example, the data identifier DID number 0 of the first fault cache data is 1234, the data identifier DID number 1 of the second fault cache data is 1243, the data identifier DID number 3 of the third fault cache data is 1324, ..., the data identifier DID number 19 of the twentieth fault cache data is 4132; Kmax is the preset continuous frozen data length.

[0069] Further, in some embodiments, before a transmission fault is detected, the process includes: receiving a fault trigger identifier sent by a transmission trigger fault condition; determining whether the fault trigger identifier satisfies a TCU fault condition; and if the TCU fault condition is satisfied, determining that a transmission fault occurs.

[0070] It should be understood that the embodiment of the present invention can periodically (calibrate) detect whether the transmission has a fault through the fault diagnosis module. When the transmission triggers a fault condition, a fault trigger flag can be sent. After the fault management module receives the fault trigger flag, it will enter the fault handling stage. After the calibrated debounce time (debounce time), if the fault trigger condition is still met, it is determined that the fault trigger flag meets the TCU fault condition and the transmission is determined to have a fault. Therefore, by setting whether the fault trigger flag meets the TCU fault condition, the accuracy of determining whether the transmission has a fault is effectively improved to avoid misjudgment.

[0071] It should be noted that the fault cache data can firstly calibrate the corresponding cache data DID according to different faults, and set the sampling period of each signal according to the accuracy and characteristics of the data signal, such as Figure 4 As shown, for example, the sampling period can be calibrated to 20ms when the data signal accuracy and characteristics are 0, the sampling period can be calibrated to 100ms when the data signal accuracy and characteristics are 3, and the sampling period can be calibrated to 40ms when the data signal accuracy and characteristics are 6, etc., without specific limitation here, the fault data updates the cache data in real time in the form of a cyclic rotation according to the calibrated sampling period. When a fault occurs, the data is frozen according to the trigger flag of the data to be frozen, and the trigger flag of the data to be frozen defines the data freezing time through the calibration value.

[0072] Step S102 , while acquiring first TCU related data of a first preset time before the fault occurs, acquiring second TCU related data of a second preset time after the fault occurs.

[0073] Further, in some embodiments, while obtaining first TCU-related data of a first preset time before the time when the fault occurs, obtaining second TCU-related data of a second preset time after the time when the fault occurs includes: using the UDS service to read the TCU data to be frozen; and obtaining the first TCU-related data and the second TCU-related data based on the freeze frame analysis corresponding to the TCU data to be frozen.

[0074] Further, in some embodiments, first TCU-related data and second TCU-related data are obtained based on freeze frame parsing corresponding to the TCU data to be frozen, including: converting the hexadecimal TCU data into physical values ​​or ASCII code values; and collecting transmission parameters within a first time length and transmission processing data within a second preset time length according to the physical values.

[0075] Among them, the first preset time length and the second preset time length can be time lengths preset by the user, can be time lengths obtained through a limited number of experiments, or can be time lengths obtained through a limited number of computer simulations, and are not specifically limited here.

[0076] It should be understood that the fault data freezing storage module can be used to store fault cache data. When a new fault is detected in the fault memory, the fault cache data is stored in the EEP (Electrically ErasableProgrammable) memory, that is, the fault freezing frame data module. The fault freezing frame data (that is, the TCU data to be frozen) is read by the diagnostic equipment through the UDS service (Unified Diagnostic Services). The reading result can be as follows: Figure 5 shown.

[0077] Furthermore, if Figure 6 As shown, the embodiment of the present invention converts hexadecimal TCU data into physical values ​​or ASCII code values ​​through data analysis, so as to obtain the actual values ​​of relevant parameters 2s before the fault occurs (i.e., the first preset time length) and the post-fault processing after the fault occurs, which is equivalent to the data collected by online fault detection, so as to facilitate the rapid and accurate analysis of the real cause of the problem.

[0078] Step S103 , performing a fault reproduction test on the TCU using the TCU data, the first TCU related data and the second TCU related data, and identifying the fault cause of the TCU based on the fault reproduction data and / or generating a fault report of the TCU.

[0079] That is to say, the embodiment of the present invention can record and store relevant diagnostic data (i.e., TCU data) at the time of fault occurrence, and adopt a mode of continuous collection of relevant data (i.e., first TCU related data and second TCU related data) within a certain period of time before and after the fault occurs, to realize the fault reproduction test function, and display the cause, status, electrical component characteristics and diagnostic logic of the fault trigger in the form of linear data, so as to truly and effectively analyze the problem, identify the true cause of the fault, save the cost of troubleshooting, and provide fast and efficient after-sales service.

[0080] Therefore, by analyzing the continuous frame data before and after the fault occurs, it is equivalent to the online reproduction data of the fault, which can intuitively and accurately show the process of fault triggering and state changes.

[0081] In order to enable those skilled in the art to further understand the fault identification method of the vehicle transmission according to the embodiment of the present invention, the following is a description of the fault identification method of the vehicle transmission according to the embodiment of the present invention. Figure 2 and Figure 7 The fault cache data freezing process is elaborated in detail.

[0082] like Figure 7 As shown, the fault cache data is frozen, including the following steps:

[0083] S701, start.

[0084] S702, determine whether the TCU power-on diagnosis condition is met, if so, execute step S704, otherwise, execute step S703.

[0085] Among them, the power supply range must be ensured when the TCU is powered on. The diagnostic conditions can be understood as the conditions for starting fault diagnosis and the conditions for triggering the fault, that is, the corresponding conditions to be set when diagnosing different faults.

[0086] While executing step S704, the rotating buffer area of ​​the fault data buffer module periodically buffers the calibrated freeze frame data, and jumps to execute step S710.

[0087] S703, wait until the diagnosis condition is met, and jump to execute step S701.

[0088] S704, the fault diagnosis module periodically diagnoses the fault status, and executes step S705 when the fault triggering condition is met.

[0089] S705, receiving a fault triggering identifier, the fault management module confirms the fault, and determines whether the fault triggering identifier meets the TCU fault condition. If yes, execute step S707, otherwise, execute step S706.

[0090] S706: The fault is not established, and the process jumps to step S704.

[0091] S707, EEP fault is stored in memory

[0092] S708, the fault data freezing and storage module performs fault data freezing and storage.

[0093] Before the fault data freezing storage module freezes and stores the fault data, the cache data freezing time calibration quantity must be met and the cache data freezing flag must be established. Then, the fault data is obtained from the frozen frame data of the periodic cache calibration in the rotating cache area of ​​the fault data cache module for storage.

[0094] S709, end.

[0095] According to the fault identification method of the vehicle transmission of the embodiment of the present invention, when a transmission fault occurs, the TCU data at the time of the fault occurrence can be collected, and the first TCU related data of the first preset time before the time of the fault occurrence can be obtained, and the second TCU related data of the second preset time after the time of the fault occurrence can be obtained, and the TCU data, the first TCU related data and the second TCU related data can be used to perform a fault reproduction test on the TCU, and the fault reproduction data can be used to identify the cause of the TCU fault and / or generate a TCU fault report. In this way, the problem that the electronic control system cannot be directly detected in the related technology, and in the later fault troubleshooting and analysis, the transmission often needs to be disassembled to further detect and confirm the true cause, which greatly increases the cost of fault troubleshooting, is conducive to the rapid analysis of occasional faults, and reduces the problem analysis process of fault reproduction, offline disassembly and detection.

[0096] Furthermore, if Figure 8 As shown, an embodiment of the present invention further discloses a vehicle transmission fault identification device 10, the transmission is integrated with an automatic transmission control unit TCU, and the vehicle transmission fault identification device 10 includes: a collection module 100, an acquisition module 200 and an identification module 300.

[0097] Wherein, the acquisition module 100 is used to collect TCU data at the time of the failure when a transmission failure is detected;

[0098] The acquisition module 200 is used to acquire first TCU related data of a first preset time before the fault occurs, and acquire second TCU related data of a second preset time after the fault occurs;

[0099] The identification module 300 is used to perform an online fault test on the TCU using the TCU data, the first TCU related data and the second TCU related data, and to identify the fault cause of the TCU from the fault reproduction data and / or generate a fault report of the TCU.

[0100] Furthermore, before the transmission failure is detected, the acquisition module 100 is specifically used to:

[0101] receiving a fault triggering identifier sent by a transmission triggering fault condition;

[0102] Determine whether the fault triggering flag meets the TCU fault condition;

[0103] If the TCU fault conditions are met, it is determined that the transmission is faulty.

[0104] Furthermore, the acquisition module 100 is specifically used for:

[0105] Get TCU data from the fault data cache module;

[0106] The data identifier of the TCU data to be frozen is stored in the rotating buffer area with a preset continuous frozen data length.

[0107] Furthermore, the acquisition module 200 is specifically used for:

[0108] Use UDS service to read TCU data to be frozen;

[0109] The first TCU-related data and the second TCU-related data are obtained based on the freeze frame analysis corresponding to the TCU data to be frozen.

[0110] Furthermore, the acquisition module 200 is also used for:

[0111] Convert hexadecimal TCU data into physical values;

[0112] The transmission parameters within a first time period and the transmission processing data within a second preset time period are collected according to the physical values.

[0113] It should be noted that the specific implementation of the vehicle transmission fault identification device according to the embodiment of the present invention is similar to the specific implementation of the vehicle transmission fault identification method, and will not be described in detail here to reduce redundancy.

[0114] According to the fault identification device of the vehicle transmission of the embodiment of the present invention, when a transmission fault occurs, the TCU data at the time of the fault occurrence can be collected, and the first TCU related data of the first preset time before the time of the fault occurrence can be obtained, and the second TCU related data of the second preset time after the time of the fault occurrence can be obtained, and the TCU data, the first TCU related data and the second TCU related data can be used to perform a fault reproduction test on the TCU, and the fault reproduction data can be used to identify the cause of the TCU fault and / or generate a TCU fault report. In this way, the problem that the electronic control system cannot be directly detected in the related technology, and in the later fault troubleshooting and analysis, the transmission often needs to be disassembled to further detect and confirm the true cause, which greatly increases the cost of fault troubleshooting, is conducive to the rapid analysis of occasional faults, and reduces the problem analysis process of fault reproduction, offline disassembly and detection.

[0115] Furthermore, an embodiment of the present invention discloses a vehicle, which is provided with a vehicle transmission fault identification device of the above embodiment. Since the vehicle has the above device, the problem that the electronic control system cannot be directly detected in the related art, and the transmission often needs to be disassembled for further detection and confirmation of the true cause during later fault detection and analysis, which greatly increases the cost of fault detection, is conducive to the rapid analysis of occasional faults, and reduces the problem analysis process of fault reproduction, offline disassembly detection, etc.

[0116] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for identifying a fault of a vehicle transmission, characterized in that: The transmission is integrated with an automatic transmission control unit TCU, wherein the method comprises the following steps: When a transmission failure is detected, TCU data at the time of the failure is collected; While acquiring first TCU related data of a first preset time length before the fault occurs, acquiring second TCU related data of a second preset time length after the fault occurs; Performing an online fault test on the TCU using the TCU data, the first TCU-related data, and the second TCU-related data, and identifying a fault cause of the TCU based on fault reproduction data and / or generating a fault report of the TCU; The collecting of TCU data at the time of the fault occurrence includes: Acquire the TCU data from a fault data cache module; storing the data identifier of the TCU data to be frozen in a rotating buffer area with a preset continuous frozen data length; The fault cache data first calibrates the corresponding cache data DID according to different faults, and sets the sampling period of each signal according to the data signal accuracy and characteristics. The fault data updates the cache data in real time in a cyclical manner according to the calibrated sampling period; when a fault occurs, the data is frozen according to the trigger flag of the data to be frozen, and the trigger flag of the data to be frozen defines the data freezing time through the calibration value; The step of acquiring first TCU-related data of a first preset time period before the fault occurs and acquiring second TCU-related data of a second preset time period after the fault occurs comprises: Using the UDS service to read the TCU data to be frozen; Obtaining the first TCU-related data and the second TCU-related data based on the freeze frame analysis corresponding to the TCU data to be frozen; A fault reproduction test is performed on the TCU using the TCU data, the first TCU related data and the second TCU related data, and a fault cause of the TCU is identified from the fault reproduction data and / or a fault report of the TCU is generated.

2. The method according to claim 1, characterized in that: Before detecting that the transmission fails, the method includes: receiving a fault triggering identifier sent by the transmission triggering fault condition; Determining whether the fault triggering flag satisfies a TCU fault condition; If the TCU failure condition is met, it is determined that the transmission has failed.

3. The method according to claim 1, characterized in that The obtaining the first TCU-related data and the second TCU-related data based on the freeze frame parsing corresponding to the TCU data to be frozen includes: Convert hexadecimal TCU data into physical value or ASCII code value; The transmission parameters within the first preset time period and the transmission processing data within the second preset time period are collected according to the physical values.

4. A vehicle transmission fault identification device, characterized in that: The vehicle transmission fault identification device is used to execute a vehicle transmission fault identification method according to claim 1, wherein the transmission is integrated with an automatic transmission control unit TCU, wherein the device comprises: The acquisition module is used to collect TCU data at the time of the failure when a transmission failure is detected; An acquisition module, configured to acquire first TCU-related data of a first preset time before the fault occurs, and acquire second TCU-related data of a second preset time after the fault occurs; An identification module is used to perform an online fault test on the TCU using the TCU data, the first TCU related data and the second TCU related data, and to identify the cause of the TCU fault by the fault reproduction data and / or generate a fault report of the TCU.

5. The device according to claim 4, characterized in that Before detecting that the transmission fails, the acquisition module is specifically used to: receiving a fault triggering identifier sent by the transmission triggering fault condition; Determining whether the fault triggering flag satisfies a TCU fault condition; If the TCU failure condition is met, it is determined that the transmission has failed.

6. The device according to claim 4, characterized in that The acquisition module is specifically used for: Acquire the TCU data from a fault data cache module; The data identifier of the TCU data to be frozen is stored in the rotating buffer area with a preset continuous frozen data length.

7. The device according to claim 4, characterized in that The acquisition module is specifically used for: Using the UDS service to read the TCU data to be frozen; The first TCU-related data and the second TCU-related data are obtained based on the freeze frame analysis corresponding to the TCU data to be frozen.

8. A vehicle, characterized in that: include: A vehicle transmission fault identification device as described in any one of claims 4 to 7.

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