AMT transmission system, intermediate shaft sensor fault diagnosis method and electronic equipment

Abstract

The invention discloses an AMT transmission system, an intermediate shaft sensor fault diagnosis method and electronic equipment, and relates to the field of fault diagnosis. The power module is used for transmitting engine power to a vehicle load; the sensing module is used for detecting the running state of an AMT transmission system transmitting engine power to a vehicle load. The system further comprises; the AMT control module is used for controlling gear shifting and clutch connection of the AMT transmission system; the sensing module sends the information of the running state of the AMT transmission system to the AMT control module; the AMT control module controls gear shifting and clutch connection of the AMT transmission system based on a preset control strategy, and engine power is transmitted to a vehicle load. According to the scheme, the fault state of the intermediate shaft sensor is judged through regular scanning, poor work of the intermediate shaft sensor is found as early as possible, maintenance and replacement are carried out as early as possible, and risk deterioration is reduced.

Description

Technical Field

[0001] The present application relates to the field of fault diagnosis, and in particular to an AMT transmission system, an intermediate shaft sensor fault diagnosis method, an intermediate shaft sensor fault diagnosis device, an electronic device, a storage medium and a vehicle. Background Art

[0002] The shifting operation of the AMT transmission system relies on accurate feedback data from the sensor to achieve smooth gear changes. Usually, the intermediate shaft is an important link, and an intermediate shaft sensor is specially set to detect the rotation state of the intermediate shaft. In one case, when the intermediate shaft sensor malfunctions, it will not immediately lose the data transmission capability, and continue to import the data of the intermediate shaft sensor into the relevant control module, resulting in abnormal control of the shifting operation by the control module. The AMT transmission system working with a problem will cause greater risks in vehicle driving.

[0003] Therefore, a fault diagnosis scheme for the intermediate shaft sensor based on the AMT transmission system is needed.

[0004] In the neutral state, the malfunctioning state of the intermediate shaft sensor under the AMT transmission system should be identified as soon as possible to prevent the abnormal situation from further deteriorating. Summary of the invention

[0005] The object of the present invention is to provide an AMT transmission system, an intermediate shaft sensor fault diagnosis method, an intermediate shaft sensor fault diagnosis device, an electronic device, a storage medium and a vehicle, so as to at least solve the problem of not being able to timely detect the malfunction of the intermediate shaft sensor and solve one of the technical problems of not being able to identify the malfunction of the intermediate shaft sensor in the neutral state.

[0006] The present invention provides the following scheme:

[0007] According to one aspect of the present invention, there is provided an AMT transmission system, the AMT transmission system comprising: a power module, a sensing module;

[0008] The power module is used to transmit the engine power to the vehicle load;

[0009] The sensing module is used to detect the operating status of the AMT transmission system that transmits engine power to the vehicle load;

[0010] Also included: an AMT control module for controlling the gear shifting and clutch connection of the AMT transmission system;

[0011] The sensing module sends information about the operating status of the AMT transmission system to the AMT control module;

[0012] The AMT control module controls the gear shifting and clutch connection of the AMT transmission system based on a preset control strategy to transfer the engine power to the vehicle load.

[0013] Furthermore, the power module includes: a front auxiliary box module, a rear auxiliary box module and a gear box module;

[0014] The input shaft of the front auxiliary box module is connected to the output shaft of the engine through a clutch;

[0015] The drive shaft of the rear auxiliary box module is used to connect the rear axle of the vehicle and drive the wheels to rotate;

[0016] The gearbox module is provided with a gear system for transmitting the engine power under the control of the AMT transmission system to the vehicle load;

[0017] The gear box module is provided with a gear system including an intermediate shaft;

[0018] The front auxiliary box module is meshedly connected to the gear box module via an intermediate shaft, and the gear box module is meshedly connected to the rear auxiliary box module, and is connected to the rear axle of the vehicle via a driving shaft.

[0019] Further, the sensing module includes: an intermediate shaft sensor and a drive shaft sensor;

[0020] The intermediate shaft sensor is used to collect information on the rotation state of the intermediate shaft;

[0021] The drive shaft sensor is used to collect information on the rotation state of the drive shaft;

[0022] Among them, the states of the clutch disengagement action and the gear shifting action are monitored according to the rotation state of the engine output shaft and the rotation state of the intermediate shaft.

[0023] According to two aspects of the present invention, a method for diagnosing an intermediate shaft sensor fault is provided. Based on an AMT transmission system, the method for diagnosing an intermediate shaft sensor fault comprises:

[0024] Get the speed information of the engine and AMT transmission system;

[0025] Based on the speed information of the engine and the AMT transmission system, the clutch disengagement action is controlled to coordinate the gear shifting action;

[0026] Wherein, determining whether the gear position state is a neutral state;

[0027] If, no, then continue scanning the gear state according to a preset first time period;

[0028] If, yes, then start the intermediate shaft sensor fault diagnosis;

[0029] According to the above-mentioned starting intermediate shaft sensor fault diagnosis, the information of clutch position state is obtained.

[0030] Furthermore, the information of obtaining the clutch position state includes:

[0031] Determine whether the clutch position state is in an engaged state;

[0032] If, no, then continuously scanning the clutch position state according to a preset second time period;

[0033] If yes, then obtain the engine speed value Ne;

[0034] It also includes determining whether the intermediate shaft speed sensor is in a data readable state;

[0035] If it is readable, then read the intermediate shaft speed data through the intermediate shaft speed sensor, including obtaining the intermediate shaft speed value NI;

[0036] The method also includes obtaining a transmission ratio value R of the front auxiliary box;

[0037] According to the intermediate shaft speed value NI and the transmission ratio value R of the front auxiliary box, the calculated value of the input shaft speed of the front auxiliary box is obtained;

[0038] The calculated value of the front auxiliary box input shaft speed includes: Nin=NI*R.

[0039] Furthermore, it also includes:

[0040] According to the engine speed value Ne and the front auxiliary box input shaft speed calculation value Nin, a difference Nc between the engine speed value and the front auxiliary box input shaft speed calculation value is obtained;

[0041] The difference between the engine speed value and the calculated value of the front auxiliary box input shaft speed includes: Nc=Ne-Nin;

[0042] Wherein, a preset speed redundancy difference Ny of the difference between the engine speed value and the calculated speed value of the front auxiliary box input shaft is obtained;

[0043] According to the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed and the preset speed redundancy difference Ny, determining whether the intermediate shaft sensor is diagnosed as a non-fault state;

[0044] The step of determining whether the intermediate shaft sensor is diagnosed as being in a non-fault state comprises:

[0045] If the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed is less than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

[0046] Further, the intermediate shaft sensor is diagnosed as being in a non-fault state including:

[0047] According to the intermediate shaft sensor currently being diagnosed as being in a fault-free state, obtaining information on the timing control of the timer;

[0048] Comparing the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed with the preset speed redundancy difference Ny;

[0049] If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is greater than or equal to the preset speed redundancy difference Ny, the timer is controlled to start timing according to the timing control information of the timer;

[0050] Start timing according to the control timer, set the time threshold t1, and record the delay time t;

[0051] According to the delay time t being greater than or equal to the time threshold t1, determining again whether the intermediate shaft sensor is diagnosed as being in a non-fault state;

[0052] If the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed is less than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

[0053] Further, the determining whether the intermediate shaft sensor is diagnosed as being in a non-fault state further includes:

[0054] If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, then obtaining the timer timing control information;

[0055] Start timing according to the control timer, set the time threshold t1, and record the delay time t;

[0056] According to the delay time t being greater than or equal to the time threshold t1, determining again whether the intermediate shaft sensor is diagnosed as being in a non-fault state;

[0057] If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, the intermediate shaft sensor is diagnosed as being in a fault state.

[0058] According to three aspects of the present invention, there is provided an intermediate shaft sensor fault diagnosis device, the intermediate shaft sensor fault diagnosis device comprising:

[0059] An information acquisition module is used to obtain the speed information of the engine and the AMT transmission system;

[0060] An action control module, for controlling the clutch disengagement action and the gear shifting action in coordination with the gear shifting action based on the speed information of the engine and the AMT transmission system;

[0061] The gear status module is used to determine whether the gear status is neutral;

[0062] a gear scanning module, for, if yes, continuing the scanning of the gear status according to a preset first time period;

[0063] A start-up diagnostic module is used to start the intermediate shaft sensor fault diagnosis if yes;

[0064] The clutch information module is used to obtain the information of the clutch position state according to the fault diagnosis of the starting intermediate shaft sensor.

[0065] According to four aspects of the present invention, there is provided an electronic device, comprising: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0066] A computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the intermediate shaft sensor fault diagnosis method.

[0067] According to five aspects of the present invention, a computer-readable storage medium is provided, comprising: a computer program executable by an electronic device is stored therein, and when the computer program runs on the electronic device, the electronic device executes the steps of the intermediate shaft sensor fault diagnosis method.

[0068] According to six aspects of the present invention, there is provided a vehicle, comprising:

[0069] An electronic device, used to implement the steps of the intermediate shaft sensor fault diagnosis method;

[0070] A processor, the processor runs a program, and when the program runs, the steps of the intermediate shaft sensor fault diagnosis method are executed from the data output by the electronic device;

[0071] The storage medium is used to store a program, and when the program is running, the steps of the intermediate shaft sensor fault diagnosis method are executed for the data output from the electronic device.

[0072] Through the above scheme, the following beneficial technical effects are obtained:

[0073] The present application reads the intermediate shaft sensor data in the neutral state to determine whether the intermediate shaft sensor is faulty, thereby improving the defect that the existing diagnosis can only be performed in the gear-engaged state.

[0074] The present application determines the fault status of the intermediate shaft sensor by periodic scanning, thereby discovering the malfunction of the intermediate shaft sensor as early as possible, repairing and replacing it early, and reducing the risk of deterioration. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 It is a structural diagram of an AMT transmission system provided by one or more embodiments of the present invention.

[0076] Figure 2 It is a flow chart of a method for diagnosing a fault of an intermediate shaft sensor provided by one or more embodiments of the present invention.

[0077] Figure 3 It is a structural diagram of an intermediate shaft sensor fault diagnosis device provided by one or more embodiments of the present invention.

[0078] Figure 4 It is a schematic diagram of an AMT transmission system according to a specific embodiment of the present invention.

[0079] Figure 5 It is a schematic diagram of the intermediate shaft sensor fault diagnosis process according to a specific embodiment of the present invention.

[0080] Figure 6 It is a structural block diagram of an electronic device of an intermediate shaft sensor fault diagnosis method provided by one or more embodiments of the present invention. DETAILED DESCRIPTION

[0081] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0082] Figure 1 It is a structural diagram of an AMT transmission system provided by one or more embodiments of the present invention.

[0083] like Figure 1 The AMT transmission system shown includes: a power module, a sensing module;

[0084] a power module for transmitting engine power to the vehicle load;

[0085] A sensing module for detecting the operating status of the AMT transmission system that transmits engine power to the vehicle load;

[0086] Also included: an AMT control module for controlling the gear shifting and clutch connection of the AMT transmission system;

[0087] The sensing module sends information about the operating status of the AMT transmission system to the AMT control module;

[0088] The AMT control module controls the gear shifting and clutch connection of the AMT transmission system based on a preset control strategy to transfer the engine power to the vehicle load.

[0089] Specifically, the engine is connected to the front auxiliary box module, then to the gear box module, and then to the rear auxiliary box module to output the engine power to the vehicle load, such as the rear axle of the vehicle. During this period, in order to ensure the smoothness of the gear shift, it is necessary to grasp the right timing. The sensor module monitors the operating status from the engine connecting to the front auxiliary box module, connecting to the gear box module, and then connecting to the rear auxiliary box module, such as the speed sensor, temperature sensor, etc. Through the information from the sensor, the auxiliary AMT control module realizes the gear shift and clutch connection of the AMT transmission system, and smoothly completes the switching of the power output state.

[0090] In this embodiment, the power module includes: a front auxiliary box module, a rear auxiliary box module and a gear box module;

[0091] The input shaft of the front auxiliary box module is connected to the engine output shaft through a clutch;

[0092] The drive shaft of the rear auxiliary box module is used to connect the rear axle of the vehicle and drive the wheels to rotate;

[0093] The gearbox module is provided with a gear system for transmitting the engine power under the control of the AMT transmission system to the vehicle load;

[0094] The gear box module is provided with a gear system including an intermediate shaft;

[0095] The front auxiliary box module is meshed and connected to the gear box module through an intermediate shaft, and the gear box module is meshed and connected to the rear auxiliary box module, and the rear axle of the vehicle is connected by a drive shaft.

[0096] Specifically, the gear system of the gear box module is used to control the transmission ratio, for example, by switching the meshing relationship between the gears, the transmission ratio change from the engine output shaft to the rear auxiliary box module drive shaft is formed. Among them, the intermediate shaft is a relatively important component, which runs through the transmission from the front auxiliary box to the rear auxiliary box, and the gear change meshing process is related to it.

[0097] In this embodiment, the sensing module includes: an intermediate shaft sensor and a drive shaft sensor;

[0098] An intermediate shaft sensor, used to collect information on the rotation state of the intermediate shaft;

[0099] A drive shaft sensor, used to collect information on the rotation state of the drive shaft;

[0100] Among them, the states of the clutch disengagement action and the gear shifting action are monitored according to the rotation state of the engine output shaft and the rotation state of the intermediate shaft.

[0101] Specifically, the rotation state of the intermediate shaft and the rotation state of the drive shaft have a corresponding relationship under a specific gear relationship. When the gear is switched, the two are matched according to the preset ratio relationship. The clutch action can match the power output, the intermediate shaft speed increases or decreases, so that the ratio transition is carried out at an appropriate speed. The intermediate shaft also includes a special brake to improve the efficiency of the intermediate shaft speed reduction.

[0102] Figure 2 is a flow chart of a method for diagnosing a fault of an intermediate shaft sensor provided by one or more embodiments of the present invention.

[0103] like Figure 2 The intermediate shaft sensor fault diagnosis method shown is based on the AMT transmission system, and the intermediate shaft sensor fault diagnosis method includes:

[0104] Step S1, obtaining the speed information of the engine and the AMT transmission system;

[0105] Step S2, based on the speed information of the engine and the AMT transmission system, controlling the clutch disengagement action and coordinating the gear shifting action;

[0106] Step S3, wherein it is determined whether the gear state is a neutral state;

[0107] Step S4, if no, then continue scanning the gear state according to a preset first time period;

[0108] Step S5: if yes, then start the intermediate shaft sensor fault diagnosis;

[0109] Step S6, obtaining clutch position status information based on starting intermediate shaft sensor fault diagnosis.

[0110] Specifically, in the embodiment of this city, the intermediate shaft sensor fault diagnosis is initiated in the neutral state. At this time, the power of the engine is only transmitted to the intermediate shaft through the front auxiliary box, and does not affect other parts. The abnormality of the intermediate shaft sensor can be discovered as early as possible before the vehicle is shifted into gear.

[0111] In this embodiment, obtaining the information of the clutch position state includes:

[0112] Determine whether the clutch position state is in an engaged state;

[0113] If, no, then continuously scanning the clutch position state according to a preset second time period;

[0114] If yes, then obtain the engine speed value Ne;

[0115] It also includes determining whether the intermediate shaft speed sensor is in a data readable state;

[0116] If it is readable, then read the intermediate shaft speed data through the intermediate shaft speed sensor, including obtaining the intermediate shaft speed value NI;

[0117] The method also includes obtaining a transmission ratio value R of the front auxiliary box;

[0118] According to the intermediate shaft speed value NI and the transmission ratio value R of the front auxiliary box, the calculated value of the input shaft speed of the front auxiliary box is obtained;

[0119] The calculated value of the front auxiliary box input shaft speed includes: Nin=NI*R.

[0120] Specifically, the front auxiliary box has a fixed transmission ratio. The engine output shaft is connected to the input shaft of the front auxiliary box by a clutch. The engine speed is basically synchronized with the front auxiliary box speed. Because the intermediate shaft is meshingly connected to the front auxiliary box, the calculated value of the front auxiliary box input shaft is obtained, which is equivalent to the speed of the intermediate shaft being calculated.

[0121] In this embodiment, it also includes:

[0122] According to the engine speed value Ne and the calculated value Nin of the input shaft speed of the front auxiliary box, a difference Nc between the engine speed value and the calculated value Nin of the input shaft speed of the front auxiliary box is obtained;

[0123] The difference between the engine speed value and the calculated value of the front auxiliary box input shaft speed includes: Nc = Ne-Nin;

[0124] Wherein, a preset speed redundancy difference Ny of the difference between the engine speed value and the calculated speed value of the front auxiliary box input shaft is obtained;

[0125] According to the difference Nc between the engine speed value and the calculated value of the input shaft speed of the front auxiliary box and the preset speed redundancy difference Ny, it is determined whether the intermediate shaft sensor is diagnosed as a non-fault state;

[0126] Determining whether the intermediate shaft sensor is diagnosed as a fault-free state includes:

[0127] If the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed is less than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

[0128] Specifically, since the engine output shaft and the front auxiliary box input shaft are connected through a clutch, under normal circumstances, the engine speed is very close to the front auxiliary box input shaft speed, but since the clutch is not engaged, there is a certain error, but it must be a reasonable error. A preset speed redundancy difference Ny is set for the difference between the engine speed value and the front auxiliary box input shaft speed calculation value, thereby judging whether the intermediate shaft sensor diagnosis is in a fault-free state.

[0129] In this embodiment, the intermediate shaft sensor is diagnosed as being in a non-fault state including:

[0130] According to the current diagnosis of the intermediate shaft sensor as being in a fault-free state, information on the timing control of the timer is obtained;

[0131] Compare the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed with the preset speed redundancy difference Ny;

[0132] If the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed is greater than or equal to the preset speed redundancy difference Ny, the timer is controlled to start timing according to the information of the timer timing control;

[0133] Start timing according to the control timer, set the time threshold t1, and record the delay time t;

[0134] According to the delay time t being greater than or equal to the time threshold t1, it is judged again whether the intermediate shaft sensor is diagnosed as being in a non-fault state;

[0135] If the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed is less than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

[0136] Specifically, in this embodiment, the fault state of the intermediate shaft sensor is not continuously stable in one state, and may be sometimes good and sometimes bad, such as due to ambient temperature, aging of components and lines, unstable returned data, etc. Even if the intermediate shaft sensor is currently diagnosed as having no faults, it still needs to be monitored periodically after a preset delay.

[0137] From the start of the vehicle, after the first round of comparison between the engine speed value and the calculated value of the front auxiliary box input shaft speed, the difference Nc and the preset speed redundancy difference Ny, it is concluded that the current intermediate shaft sensor is diagnosed as being in a fault-free state, and then the delay period is continued to be set to continuously trigger the judgment process again.

[0138] The time threshold t1 in this embodiment can be set floatingly according to specific working conditions. For example, when the vehicle is just started, the temperature is low, the intermediate shaft sensor is not affected by the high temperature and can still work normally, then the time threshold t1 can be increased. When the engine works for a long time, for example, the vehicle is difficult to shift gears and is forced to stop on the roadside, then the time threshold t1 can be reduced and the sampling frequency can be increased.

[0139] In this embodiment, determining whether the intermediate shaft sensor is diagnosed as being in a non-fault state further includes:

[0140] If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, then the timer timing control information is obtained;

[0141] Start timing according to the control timer, set the time threshold t1, and record the delay time t;

[0142] According to the delay time t being greater than or equal to the time threshold t1, it is judged again whether the intermediate shaft sensor is diagnosed as being in a non-fault state;

[0143] If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, the intermediate shaft sensor is diagnosed as being in a fault state.

[0144] Specifically, since the engine and the front auxiliary box are connected by clutch, during the connection process or when the accelerator is stepped on, if the clutch plate is severely worn, it may be possible that the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value in a short period of time. In order to prevent misjudgment caused by the clutch, the difference Nc between the engine speed value and the input shaft speed value and the preset speed difference Ny between the input shaft speed value can be compared again after the timer completes the delay. If the difference Nc between the engine speed value and the input shaft speed value is still greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, it can be determined that the intermediate shaft sensor is in a faulty state.

[0145] When the engine is just started, the temperature is low and the intermediate shaft sensor is not affected by the high temperature and can still work normally, so the time threshold t1 can be increased. When the engine works for a long time, such as when the vehicle is difficult to shift gears and is forced to stop on the roadside, the time threshold t1 can be reduced and the sampling frequency can be increased.

[0146] The time threshold t1 in this embodiment can be set in a floating manner according to specific working conditions. For example, if the intermediate shaft sensor of the vehicle is diagnosed as a fault-free state (the difference Nc between the engine speed value and the calculated value of the input shaft speed of the front auxiliary box is less than the preset speed redundancy difference Ny) in the previous delay cycle, the time threshold t1 increases in the next delay cycle. If the intermediate shaft sensor of the vehicle is diagnosed as a faulty state (the difference Nc between the engine speed value and the calculated value of the input shaft speed of the front auxiliary box is greater than or equal to the preset speed redundancy difference Ny) in the previous delay cycle, the time threshold t1 decreases in the next delay cycle.

[0147] Through the change of the floating time threshold t1, the working conditions that are easy to expose abnormal conditions are monitored more vigorously, the working conditions with abnormal conditions that are easy to be ignored are monitored more vigorously, and the working conditions with abnormal conditions that are easy to be misjudged are monitored with caution.

[0148] Figure 3 It is a structural diagram of an intermediate shaft sensor fault diagnosis device provided by one or more embodiments of the present invention.

[0149] like Figure 3 The intermediate shaft sensor fault diagnosis device shown includes: an information acquisition module, an action control module, a gear status module, a start diagnosis module, and a clutch information module;

[0150] An information acquisition module is used to obtain the speed information of the engine and the AMT transmission system;

[0151] The action control module is used to control the clutch disengagement action and the gear shifting action based on the speed information of the engine and the AMT transmission system;

[0152] The gear status module is used to determine whether the gear status is neutral;

[0153] a gear scanning module, for, if yes, continuing the scanning of the gear status according to a preset first time period;

[0154] A start-up diagnostic module is used to start the intermediate shaft sensor fault diagnosis if yes;

[0155] The clutch information module is used to obtain the information of the clutch position status according to the fault diagnosis of the starting intermediate shaft sensor.

[0156] It is worth noting that although the present system only discloses an information acquisition module, an action control module, a gear status module, a start-up diagnosis module, and a clutch information module, it does not mean that the present device is limited to the above-mentioned basic functional modules. Rather, what the present invention wants to express is that, based on the above-mentioned basic functional modules, those skilled in the art can arbitrarily add one or more functional modules in combination with the prior art to form an infinite number of embodiments or technical solutions. In other words, the present system is open rather than closed. Just because the present embodiment only discloses individual basic functional modules, it cannot be considered that the scope of protection of the claims of the present invention is limited to the above-mentioned basic functional modules.

[0157] Through the above scheme, the following beneficial technical effects are obtained:

[0158] The present application reads the intermediate shaft sensor data in the neutral state to determine whether the intermediate shaft sensor is faulty, thereby improving the defect that the existing diagnosis can only be performed in the gear-engaged state.

[0159] The present application determines the fault status of the intermediate shaft sensor by periodic scanning, thereby discovering the malfunction of the intermediate shaft sensor as early as possible, repairing and replacing it early, and reducing the risk of deterioration.

[0160] Figure 4 It is a schematic diagram of an AMT transmission system according to a specific embodiment of the present invention.

[0161] Figure 5 It is a schematic diagram of the intermediate shaft sensor fault diagnosis process according to a specific embodiment of the present invention.

[0162] In a specific embodiment, Figure 4 The AMT transmission system shown includes:

[0163] 1. Input shaft, 2. Front auxiliary box, 3. Intermediate shaft reduction gear, 4. Intermediate shaft counting gear, 5. Intermediate shaft speed sensor, 6. Intermediate shaft, 7. Drive shaft counting gear, 8. Drive shaft, 9. Drive shaft speed sensor, 10. Transmission control unit, 11. Engine control unit, 12. Input gear, 13. Engine, clutch 14;

[0164] When the clutch 14 is engaged, the torque and speed from the engine 13 are transmitted by the input shaft 1. The input gear 12 on the input shaft 1 rotates together with the input shaft by means of a spline connection. The input gear 12 is connected to the intermediate shaft reduction gear 3 by means of gear meshing. In order to obtain different transmission ratios, multiple sets of gears can be added between the input gear 12 and the intermediate shaft reduction gear 3 for speed reduction. The intermediate shaft reduction gear 3 is connected to the intermediate shaft 6 by means of a spline, so that the intermediate shaft reduction gear 3 and the intermediate shaft 6 have the same speed and realize power transmission.

[0165] The intermediate shaft counting gear 4 is connected to the intermediate shaft 6 by a spline connection, and rotates together with the intermediate shaft 6 at the same speed. At this time, a pulse frequency signal is formed between the intermediate shaft speed sensor 5 and the intermediate shaft technical gear 4, which is transmitted to the transmission control unit 10 through the signal line. The transmission control unit 10 processes the signal transmitted by the sensor through internal hardware, and the processed signal is transmitted to the software. The software calculates the current speed of the intermediate shaft counting gear 4, that is, the intermediate shaft speed n_layshaft.

[0166] The intermediate shaft 6 transmits power and speed to the drive shaft 8 through splines and gear meshing. The drive shaft counting gear 7 is connected to the drive shaft 8 through gear meshing. The drive shaft 8 (equivalent to the total output shaft of the entire AMT transmission system) and the drive shaft counting gear 7 rotate together at the same speed. At this time, a pulse frequency signal is formed between the drive shaft speed sensor 9 (equivalent to the above-mentioned drive shaft sensor) and the drive shaft counting gear 7, which is transmitted to the transmission control unit 10 through the signal line. The transmission control unit 10 processes the signal transmitted by the sensor through internal hardware, and the processed signal is transmitted to the software. The software drives the current speed of the shaft counting gear 7, that is, the output shaft speed n_output.

[0167] After obtaining the intermediate shaft speed, the internal software of the transmission control unit 10 calculates the input shaft speed N_input=i*N_layshaft by multiplying the transmission ratio i between the input shaft 1 and the intermediate shaft 6 by the intermediate shaft speed N_layshaft. At the same time, the transmission control unit 10 obtains the engine speed Ne by communicating with the engine control unit 11.

[0168] In another specific embodiment, Figure 5 The intermediate shaft sensor fault diagnosis process shown includes: at the start time, first obtain the current gear position of the AMT, which is obtained by the controller of the AMT. Determine whether the current gear position is neutral. If the current gear position is not neutral, continue to obtain the current gear position information. If the current gear position is neutral, proceed to the next step;

[0169] The clutch position is obtained through the clutch position sensor, and the current clutch position is compared with the preset clutch engagement position. If the clutch position is greater than the preset clutch engagement position, the clutch is controlled to engage. If the clutch position is less than or equal to the preset clutch engagement position, the next step is performed;

[0170] The current engine speed Ne is obtained through CAN bus communication, the current intermediate shaft speed Nl is obtained through the intermediate shaft speed sensor, the front and auxiliary gearbox transmission ratio R is obtained through the AMT controller, and the input shaft speed Nin = Nl*R is calculated through the intermediate shaft speed and the front and auxiliary gearbox transmission ratio;

[0171] Calculate the difference between the current engine speed and the input shaft speed Nc = Ne-Nin. Compare the relationship between the speed difference Nc and the preset speed difference Ny. If the speed difference Nc is less than the preset speed difference Ny, it means that the current intermediate shaft speed sensor is not faulty. If the speed difference Nc is greater than or equal to the preset speed difference Ny, proceed to the next step;

[0172] Start the timer and obtain the current timer time. If the timer time t is less than the preset time t1, continue to obtain the timer time. If the timer time t is greater than or equal to the preset time t1, proceed to the next step.

[0173] The current engine speed Ne is obtained through CAN bus communication, the current intermediate shaft speed Nl is obtained through the intermediate shaft speed sensor, the front and auxiliary gearbox transmission ratio R is obtained through the AMT controller, and the input shaft speed Nin=Nl*R is calculated through the intermediate shaft speed and the front and auxiliary gearbox transmission ratio;

[0174] Calculate the difference between the current engine speed and the input shaft speed Nc = Ne-Nin. Compare the relationship between the speed difference Nc and the preset speed difference Ny. If the speed difference Nc is less than the preset speed difference Ny, it means that the current intermediate shaft speed sensor is not faulty. If the speed difference Nc is greater than or equal to the preset speed difference Ny, it is determined that the intermediate shaft speed sensor is faulty.

[0175] Figure 6 It is a structural block diagram of an electronic device of an intermediate shaft sensor fault diagnosis method provided by one or more embodiments of the present invention.

[0176] like Figure 6 As shown, the present application provides an electronic device, including: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus;

[0177] A computer program is stored in the memory. When the computer program is executed by the processor, the processor executes the steps of a method for diagnosing a fault of an intermediate shaft sensor.

[0178] The present application also provides a computer-readable storage medium storing a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of a method for diagnosing a fault of an intermediate shaft sensor.

[0179] The present application also provides a vehicle, comprising:

[0180] An electronic device for implementing the steps of a method for diagnosing a fault of an intermediate shaft sensor;

[0181] A processor, the processor runs a program, and when the program runs, the steps of the intermediate shaft sensor fault diagnosis method are executed from the data output by the electronic device;

[0182] The storage medium is used to store a program, and when the program is running, the program executes the steps of the intermediate shaft sensor fault diagnosis method for the data output from the electronic device.

[0183] The communication bus mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0184] The electronic device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory. The operating system can be any one or more computer operating systems that implement electronic device control through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. In addition, in an embodiment of the present invention, the electronic device can be a handheld device such as a smart phone or a tablet computer, or can be an electronic device such as a desktop computer or a portable computer, which is not particularly limited in the embodiment of the present invention.

[0185] The execution subject of the electronic device control in the embodiment of the present invention may be an electronic device, or a functional module in the electronic device that can call and execute a program. The electronic device may obtain the firmware corresponding to the storage medium. The firmware corresponding to the storage medium is provided by the supplier. The firmware corresponding to different storage media may be the same or different, which is not limited here. After the electronic device obtains the firmware corresponding to the storage medium, the firmware corresponding to the storage medium may be written into the storage medium, specifically, the firmware corresponding to the storage medium may be burned into the storage medium. The process of burning the firmware into the storage medium may be implemented using existing technology, which will not be described in detail in the embodiment of the present invention.

[0186] The electronic device may also obtain a reset command corresponding to the storage medium. The reset command corresponding to the storage medium is provided by the supplier. The reset commands corresponding to different storage media may be the same or different, and are not limited here.

[0187] At this time, the storage medium of the electronic device is a storage medium in which the corresponding firmware is written, and the electronic device can respond to the reset command corresponding to the storage medium in the storage medium in which the corresponding firmware is written, so that the electronic device resets the storage medium in which the corresponding firmware is written according to the reset command corresponding to the storage medium. The process of resetting the storage medium according to the reset command can be implemented by the existing technology and will not be described in detail in the embodiments of the present invention.

[0188] For the convenience of description, the above devices are described in terms of functions and are divided into various units and modules. Of course, when implementing the present application, the functions of each unit and module can be implemented in the same or multiple software and / or hardware.

[0189] Those skilled in the art will appreciate that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined.

[0190] For the method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0191] It can be known from the description of the above implementation modes that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be essentially or partly contributed to the prior art in the form of a software product, which can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which can be a personal computer, a server or a network device, etc.) to execute the methods described in the various implementation modes of the present application or certain parts of the implementation modes.

[0192] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An AMT transmission system, characterized in that: The AMT transmission system includes: a power module and a sensing module; The power module is used to transmit the engine power to the vehicle load; The sensing module is used to detect the operating status of the AMT transmission system that transmits engine power to the vehicle load; Also included: an AMT control module for controlling the gear shifting and clutch connection of the AMT transmission system; The sensing module sends information about the operating status of the AMT transmission system to the AMT control module; The AMT control module controls the gear shifting and clutch connection of the AMT transmission system based on a preset control strategy to transfer the engine power to the vehicle load.

2. The AMT transmission system according to claim 1, characterized in that: The power module includes: a front auxiliary box module, a rear auxiliary box module and a gear box module; The input shaft of the front auxiliary box module is connected to the output shaft of the engine through a clutch; The drive shaft of the rear auxiliary box module is used to connect the rear axle of the vehicle and drive the wheels to rotate; The gearbox module is provided with a gear system for transmitting the engine power under the control of the AMT transmission system to the vehicle load; The gear box module is provided with a gear system including an intermediate shaft; The front auxiliary box module is meshedly connected to the gear box module via an intermediate shaft, and the gear box module is meshedly connected to the rear auxiliary box module, and is connected to the rear axle of the vehicle via a driving shaft.

3. The AMT transmission system according to claim 2, characterized in that: The sensing module includes: an intermediate shaft sensor and a drive shaft sensor; The intermediate shaft sensor is used to collect information on the rotation state of the intermediate shaft; The drive shaft sensor is used to collect information on the rotation state of the drive shaft; Among them, the states of the clutch disengagement action and the gear shifting action are monitored according to the rotation state of the engine output shaft and the rotation state of the intermediate shaft.

4. A method for diagnosing an intermediate shaft sensor fault, characterized in that: Based on the AMT transmission system according to claims 1 to 3, the intermediate shaft sensor fault diagnosis method comprises: Get the speed information of the engine and AMT transmission system; Based on the speed information of the engine and the AMT transmission system, the clutch disengagement action is controlled to coordinate the gear shifting action; Wherein, determining whether the gear position state is a neutral state; If, no, then continue scanning the gear state according to a preset first time period; If, yes, then start the intermediate shaft sensor fault diagnosis; According to the above-mentioned starting intermediate shaft sensor fault diagnosis, the information of clutch position state is obtained.

5. The intermediate shaft speed sensor fault diagnosis method according to claim 4, characterized in that: The information of obtaining the clutch position state includes: Determine whether the clutch position state is in an engaged state; If, no, then continuously scanning the clutch position state according to a preset second time period; If yes, then obtain the engine speed value Ne; It also includes determining whether the intermediate shaft speed sensor is in a data readable state; If it is readable, then read the intermediate shaft speed data through the intermediate shaft speed sensor, including obtaining the intermediate shaft speed value NI; The method also includes obtaining a transmission ratio value R of the front auxiliary box; According to the intermediate shaft speed value NI and the transmission ratio value R of the front auxiliary box, the calculated value of the input shaft speed of the front auxiliary box is obtained; The calculated value of the front auxiliary box input shaft speed includes: Nin=NI*R.

6. The intermediate shaft speed sensor fault diagnosis method according to claim 5, characterized in that: Also includes: According to the engine speed value Ne and the front auxiliary box input shaft speed calculation value Nin, a difference Nc between the engine speed value and the front auxiliary box input shaft speed calculation value is obtained; The difference between the engine speed value and the calculated value of the front auxiliary box input shaft speed includes: Nc=Ne-Nin; Wherein, a preset speed redundancy difference Ny of the difference between the engine speed value and the calculated speed value of the front auxiliary box input shaft is obtained; According to the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed and the preset speed redundancy difference Ny, determining whether the intermediate shaft sensor is diagnosed as a non-fault state; The step of determining whether the intermediate shaft sensor is diagnosed as being in a non-fault state comprises: If the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed is less than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

7. The intermediate shaft speed sensor fault diagnosis method according to claim 6, characterized in that: The intermediate shaft sensor is diagnosed as being in a non-fault state including: According to the intermediate shaft sensor currently being diagnosed as being in a fault-free state, obtaining information on the timing control of the timer; Comparing the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed with the preset speed redundancy difference Ny; If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is greater than or equal to the preset speed redundancy difference Ny, the timer is controlled to start timing according to the timing control information of the timer; Start timing according to the control timer, set the time threshold t1, and record the delay time t; According to the delay time t being greater than or equal to the time threshold t1, determining again whether the intermediate shaft sensor is diagnosed as being in a non-fault state; If the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed is less than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

8. The intermediate shaft speed sensor fault diagnosis method according to claim 6 or 7, characterized in that: The step of determining whether the intermediate shaft sensor is diagnosed as being in a non-fault state further includes: If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, then obtaining the timer timing control information; Start timing according to the control timer, set the time threshold t1, and record the delay time t; According to the delay time t being greater than or equal to the time threshold t1, determining again whether the intermediate shaft sensor is diagnosed as being in a non-fault state; If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, the intermediate shaft sensor is diagnosed as being in a fault state.

9. An intermediate shaft sensor fault diagnosis device, characterized in that: The intermediate shaft sensor fault diagnosis device comprises: An information acquisition module is used to obtain the speed information of the engine and the AMT transmission system; An action control module, for controlling the clutch disengagement action and the gear shifting action in coordination with the gear shifting action based on the speed information of the engine and the AMT transmission system; The gear status module is used to determine whether the gear status is neutral; a gear scanning module, for, if yes, continuing the scanning of the gear status according to a preset first time period; A start-up diagnostic module is used to start the intermediate shaft sensor fault diagnosis if yes; The clutch information module is used to obtain the information of the clutch position state according to the fault diagnosis of the starting intermediate shaft sensor.

10. An electronic device, characterized in that: include: A processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; A computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the intermediate shaft sensor fault diagnosis method according to any one of claims 4 to 8.

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