Fault detection method and device for vehicle electromagnetic valve and vehicle

Abstract

The invention discloses a fault detection method for a vehicle solenoid valve, and the method comprises the steps: carrying out the fault detection of a plurality of fault-prone points of the solenoid valve of the vehicle according to a preset detection mode in the starting process of the vehicle, and obtaining a detection result; and the fault state of the electromagnetic valve is determined based on the detection result. Meanwhile, the invention further discloses a fault detection device for the vehicle electromagnetic valve and the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle solenoid valves, and specifically relates to a method and device for detecting faults of vehicle solenoid valves, and a vehicle. Background Art

[0002] Automobile solenoid valves play a crucial role in the automobile system. It uses electrical energy to generate electromagnetic attraction through a coil to control the opening and closing of the valve core, thereby realizing the automatic control of the flow of substances such as fuel, water, and gas. It is often used to cut off the flow of oil, water, and gas and effectively control each system of the vehicle. However, in the prior art, it is usually dependent on manual experience, and the solenoid valve is judged whether there is a fault by observing the operation state of the device, listening to the sound, touching the temperature, etc. Although this method is simple and direct, it is inefficient and easily affected by personal experience and environmental factors. Summary of the Invention

[0003] In view of this, embodiments of this application are expected to provide a method and device for detecting faults of vehicle solenoid valves, and a vehicle, so as to solve at least the above technical problems.

[0004] To achieve the above object, the technical solution of this application is realized as follows:

[0005] According to one aspect of the embodiments of this application, a method for detecting faults of vehicle solenoid valves is provided, and the method includes:

[0006] During the startup process of the vehicle, perform fault detection on multiple easy-to-fault points of the solenoid valve of the vehicle according to a preset detection method to obtain a detection result;

[0007] Based on the detection result, determine the fault state of the solenoid valve.

[0008] In the above solution, the multiple easy-to-fault points include: short power supply fault;

[0009] Detecting the short power supply fault of the solenoid valve includes:

[0010] Disconnect the power signal between the solenoid valve and the vehicle power supply, and disconnect the duty cycle signal of the pulse width modulation PWM output of the solenoid valve;

[0011] Detect the low-side voltage value of the solenoid valve;

[0012] Based on the detection result, determining the fault state of the solenoid valve includes:

[0013] If the low-side voltage value is greater than a first preset value, determine that the solenoid valve has a short power supply fault.

[0014] In the above solution, the multiple easy-to-fault points include: short circuit fault;

[0015] Detect the short - circuit fault of the solenoid valve, including:

[0016] Connect the power signal between the solenoid valve and the vehicle power supply, and disconnect the duty - cycle signal of the pulse - width modulation (PWM) output of the solenoid valve;

[0017] Detect the low - side voltage value of the solenoid valve;

[0018] Determine the fault state of the solenoid valve based on the detection result, including:

[0019] If the first calculated value of the low - side voltage value is less than the second preset value, determine that the solenoid valve has a short - circuit fault.

[0020] In the above solution, the multiple easy - to - fail points include: open - circuit fault;

[0021] Detect the open - circuit fault of the solenoid valve, including:

[0022] Connect the power signal between the solenoid valve and the vehicle power supply, and disconnect the duty - cycle signal of the pulse - width modulation (PWM) output of the solenoid valve;

[0023] Detect the low - side voltage value of the solenoid valve;

[0024] Determine the fault state of the solenoid valve based on the detection result, including:

[0025] If the second calculated value of the low - side voltage value is greater than the second preset value and less than the third threshold, determine that the solenoid valve has an open - circuit fault.

[0026] In the above solution, the method further includes:

[0027] When it is determined that the solenoid valve has a fault, output an alarm signal, where the alarm signals corresponding to different easy - to - fail points are different.

[0028] According to another aspect of the present application, there is provided a fault detection device for a vehicle solenoid valve, the device includes:

[0029] A detection unit, configured to perform fault detection on multiple easy - to - fail points of the solenoid valve of the vehicle according to a preset detection method during the vehicle startup process to obtain a detection result;

[0030] A determination unit, configured to determine the fault state of the solenoid valve based on the detection result.

[0031] In the above solution, the multiple easy - to - fail points include: short - power - supply fault; the device further includes:

[0032] A control unit, configured to control the disconnection of the power signal between the solenoid valve and the vehicle power supply and the disconnection of the duty cycle signal of the pulse width modulation (PWM) output of the solenoid valve when detecting a short power failure of the solenoid valve;

[0033] The detection unit is further configured to detect the low-side voltage value of the solenoid valve;

[0034] The determination unit is configured to determine that the solenoid valve has a short power failure if the low-side voltage value is greater than a first preset value.

[0035] In the above solution, the multiple vulnerable points further include: a short circuit fault;

[0036] The control unit is further configured to control the connection of the power signal between the solenoid valve and the vehicle power supply and the disconnection of the duty cycle signal of the pulse width modulation (PWM) output of the solenoid valve when detecting a short circuit fault of the solenoid valve;

[0037] The detection unit is further configured to detect the low-side voltage value of the solenoid valve;

[0038] The determination unit is configured to determine that the solenoid valve has a short circuit fault if a first calculated value of the low-side voltage value is less than a second preset value.

[0039] In the above solution, the multiple vulnerable points further include: an open circuit fault;

[0040] The control unit is further configured to control the connection of the power signal between the solenoid valve and the vehicle power supply and the disconnection of the duty cycle signal of the pulse width modulation (PWM) output of the solenoid valve when detecting an open circuit fault of the solenoid valve;

[0041] The detection unit is further configured to detect the low-side voltage value of the solenoid valve;

[0042] The determination unit is configured to determine that the solenoid valve has an open circuit fault if a second calculated value of the low-side voltage value is greater than the second preset value and less than a third threshold.

[0043] According to a third aspect of the present application, there is provided a vehicle, including a processor and a memory, wherein

[0044] The memory is configured to store a computer program that can run on the processor;

[0045] The processor is configured to execute the fault detection method of the vehicle solenoid valve according to any one of the above when running the computer program.

[0046] A vehicle provided by the present application, and a method and device for detecting faults of an electromagnetic valve thereof, which is a solution for automatically detecting faults of an electromagnetic valve of a vehicle. During the starting process of the vehicle, fault detection is performed on multiple easily faulty points of the electromagnetic valve of the vehicle according to a preset detection method to obtain a detection result; based on the detection result, the fault state of the electromagnetic valve is determined. In this way, the use of an automated method makes the fault detection of the automotive electromagnetic valve more accurate and timely. Even during use, when a fault occurs in the power supply to the valve, it can be reported and processed in a timely manner to avoid safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the process implementation of the method for detecting faults of the electromagnetic valve of the vehicle in the present application;

[0048] Figure 2 It is a schematic diagram of the structural composition of the device for detecting faults of the electromagnetic valve of the vehicle in the present application;

[0049] Figure 3 It is a schematic diagram of the structural composition of the vehicle in the present application;

[0050] Figure 4 It is a schematic diagram of the structural composition of the vehicle in the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] The technical solutions of the present application will be further elaborated in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0052] For the various specific technical features in the various embodiments described in the detailed description, without conflict, various combinations can be made. For example, different combinations of specific technical features can form different embodiments. To avoid unnecessary repetition, various possible combination methods of the various specific technical features in the present application will not be described separately.

[0053] It should be noted that the terms "first / second / third" involved in the embodiments of the present application are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first / second / third" can be interchanged with a specific order or sequence when permitted. It should be understood that the objects distinguished by "first / second / third" can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0054] Figure 1 It is a schematic diagram of the process implementation of the method for detecting faults of the electromagnetic valve of the vehicle in the present application. This method can be applied to various vehicles, including but not limited to family cars, buses, trucks, commercial vehicles, transport vehicles, etc. As Figure 1 shown, the method includes:

[0055] Step 101, during the startup process of the vehicle, perform fault detection on multiple vulnerable fault points of the solenoid valve of the vehicle according to a preset detection method to obtain a detection result;

[0056] Here, the multiple vulnerable fault points of the solenoid valve may include short power supply fault, short circuit fault, and open circuit fault; among them, if detecting the short power supply fault of the solenoid valve, it can be achieved through a first preset detection method, and the first preset detection method can be expressed as: disconnect the power signal between the solenoid valve and the vehicle power supply, and disconnect the duty cycle signal of the pulse width modulation (PWM) output of the solenoid valve; and detect the low-side voltage value of the solenoid valve.

[0057] If detecting the short circuit fault of the solenoid valve, it can be achieved through a second preset detection method, and the second preset detection method can be expressed as: connect the power signal between the solenoid valve and the vehicle power supply, disconnect the duty cycle signal of the PWM output of the solenoid valve, and detect the low-side voltage value of the solenoid valve.

[0058] If detecting the open circuit fault of the solenoid valve, it can be achieved through a third preset detection method, and the third preset detection method can be expressed as: connect the power signal between the solenoid valve and the vehicle power supply, disconnect the duty cycle signal of the PWM output of the solenoid valve, and detect the low-side voltage value of the solenoid valve.

[0059] Here, the first preset detection method, the second preset detection method, and the third preset detection method can all be implemented through program code or through circuit switches.

[0060] Step 102, determine the fault state of the solenoid valve based on the detection result.

[0061] Here, if the detection result indicates that the low-side voltage value is greater than a first threshold, it is determined that the solenoid valve has a short power supply fault. Among them, the first threshold can be obtained by detecting the current value of the current power supply and several preset resistance values around the solenoid valve, and the current value and the several resistance values are obtained through a first calculation formula.

[0062] Here, if the detection result indicates that the first calculated value of the low-side voltage value is less than a second threshold, it is determined that the solenoid valve has a short circuit fault. Among them, the second threshold can be obtained by detecting the current value of the current power supply and several preset resistance values around the solenoid valve, and the current value and the several resistance values are obtained through a second calculation formula.

[0063] Here, if the detection result indicates that the second calculated value of the low-side voltage value is greater than the second threshold and less than a third threshold, it is determined that the solenoid valve has an open circuit fault.

[0064] Among them, the third threshold value can be obtained through detecting the current value of the current power supply and a plurality of preset resistance values around the solenoid valve. The current value and the plurality of resistance values are obtained through a third calculation formula.

[0065] In this application, when the vehicle determines that the solenoid valve fails, an alarm signal can also be output, where the alarm signals corresponding to different easy-to-fail points are different.

[0066] The alarm signal includes, but is not limited to, one or a combination of lights, beeps, and voice broadcasts.

[0067] The method for detecting the failure of the vehicle solenoid valve provided in this application performs failure detection on the solenoid valve in an automated manner, which can not only improve the accuracy of the detection result, but also has strong timeliness, that is, the failure detection of the solenoid valve can be realized even during the driving of the vehicle.

[0068] Figure 2 Schematic diagram of the failure detection circuit structure of the vehicle solenoid valve in this application Figure 1 , as Figure 2 shown, in this circuit structure: CSV1_Drive represents: output duty cycle; CSV1_IN represents: power-on PIN; OUT represents: solenoid valve power output; CSV1_DIAG_EN represents: diagnostic enable; CSV1_CS represents: feedback current; KL30_V_SAFE represents: power supply; CN802 represents: solenoid valve; CSV1_ADC represents: low-side voltage; GND represents: ground wire; R877 represents: first resistor; R879 represents: second resistor; R880 represents: third resistor;

[0069] When detecting the short power supply failure point of the solenoid valve (such as detecting KL30_V_SAFE and OUT), CSV1_IN and CSV1_DRIVE can be controlled to be in the off state. At this time, if CSV1_ADC > ((KL30_V_SAFE * 4.7 / (24 + 24 + 4.7)) * 0.9), it is determined that the solenoid valve currently has a short power supply failure. Among them, 4.7 and 24 are the values of the first resistor, the second resistor, and the third resistor respectively, and 0.9 is an empirical value.

[0070] When detecting the short circuit failure point of the solenoid valve, CSV1_IN can be controlled to be turned on and CSV1_DRIVE to be turned off. At this time, if (CSV1_ADC * (24 + 4.7)) / 4.7 < 0.3V, it is determined that the solenoid valve currently has a short circuit failure. Among them, 0.3V can be an empirical value.

[0071] Here, the short - circuit faults of the solenoid valve include: the solenoid valve being shorted to ground (e.g., short - circuit between GND and OUT), the solenoid valve power enable angle failing or being short - circuited (e.g., CSV1_IN failing), and the MOS transistor being short - circuited.

[0072] When detecting the open - circuit fault of the solenoid valve, CSV1_IN can be controlled to open and CSV1_DRIVE to close. At this time, if 0.3V < (CSV1_ADC * (24 + 4.7)) / 4.7 < (KL30_V_SAF - 0.5), it is determined that the solenoid valve currently has an open - circuit fault.

[0073] Figure 3 For the vehicle solenoid valve fault detection device in this application, as Figure 3 shown, the device includes:

[0074] A detection unit 301, configured to perform fault detection on multiple vulnerable fault points of the solenoid valve of the vehicle according to a preset detection method during the vehicle startup process, and obtain a detection result;

[0075] A determination unit 302, configured to determine the fault state of the solenoid valve based on the detection result.

[0076] Here, the multiple vulnerable fault points include: short - power supply faults, short - circuit faults, and open - circuit faults;

[0077] In this application, the device further includes:

[0078] A control unit 303, configured to, when detecting the short - power supply fault of the solenoid valve, control the power signal between the solenoid valve and the vehicle power supply to be disconnected, and control the duty - cycle signal of the pulse - width modulation PWM output of the solenoid valve to be disconnected;

[0079] The detection unit 301 is further configured to detect the low - side voltage value of the solenoid valve;

[0080] The determination unit 302 is configured to determine that the solenoid valve has a short - power supply fault if the low - side voltage value is greater than a first threshold.

[0081] On the other hand, the control unit 303 is further configured to, when detecting the short - circuit fault of the solenoid valve, control the power signal between the solenoid valve and the vehicle power supply to be connected, and control the duty - cycle signal of the pulse - width modulation PWM output of the solenoid valve to be disconnected;

[0082] The detection unit 301 is further configured to detect the low - side voltage value of the solenoid valve;

[0083] The determination unit 302 is configured to determine that the solenoid valve has a short - circuit fault if a first calculated value of the low - side voltage value is less than a second threshold.

[0084] On the other hand, when the control unit 303 is further used to detect an open - circuit fault of the solenoid valve, it controls the power signal connection between the solenoid valve and the vehicle power supply, and controls the disconnection of the duty - cycle signal of the pulse - width modulation (PWM) output of the solenoid valve.

[0085] The detection unit 301 is further used to detect the low - side voltage value of the solenoid valve.

[0086] The determination unit 302 is used to determine that the solenoid valve has an open - circuit fault if the second calculated value of the low - side voltage value is greater than a second threshold and less than a third threshold.

[0087] In a preferred solution, the device further includes:

[0088] An output unit 304, which is used to output an alarm signal when it is determined that the solenoid valve has a fault, where the alarm signals corresponding to different vulnerable fault points are different.

[0089] It should be noted that the vehicle solenoid valve fault detection device provided in the above - mentioned embodiment and the vehicle solenoid valve fault detection method provided above Figure 1 belong to the same concept. The specific implementation process can refer to the above - mentioned method embodiment and will not be elaborated here.

[0090] The vehicle solenoid valve fault detection device provided in this application detects the faults of the vehicle solenoid valve in an automated manner, which can not only improve the accuracy of the detection result, but also has strong timeliness, that is, it can detect the faults of the solenoid valve even during the vehicle driving process.

[0091] Figure 4 It is a schematic diagram of the structural composition of the vehicle in this application. As Figure 4 shown, the vehicle 400 includes at least one processor 401 and a memory 402 for storing a computer program that can run on the processor 401. When the processor 401 is used to run the computer program, it executes the vehicle solenoid valve fault detection method prompted in the above - mentioned embodiments of this application. The vehicle 400 further includes at least one network interface 404 and a user interface 403. Each component in the vehicle 400 is coupled together through a bus system 405. It can be understood that the bus system 405 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 405 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 4 all kinds of buses are labeled as the bus system 305.

[0092] Among them, the user interface 403 may include a display, a keyboard, a trackball, a click wheel, a button, a touch panel, or a touch screen, etc.

[0093] It can be understood that the memory 402 can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a ferromagnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), sync link dynamic random access memory (SLDRAM), direct rambus random access memory (DRRAM).The memory 402 described in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0094] The memory 402 in the embodiments of this application is used to store various types of data to support the operation of the vehicle 400. Examples of such data include: any computer programs for operating on the vehicle 400, such as the operating system 4021 and application programs 4022; messages; pictures; videos, etc. Among them, the operating system 4021 contains various system programs, such as the framework layer, core library layer, driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application programs 4022 can include various application programs, such as a Media Player, a Browser, etc., for implementing various application services. The program for implementing the method of the embodiments of this application can be included in the application programs 4022.

[0095] The processor 401 may be an integrated circuit chip with the ability to process signals. In the implementation process, each step of the above method can be completed by the integrated logic circuit in the hardware of the processor 401 or instructions in the form of software. The above-mentioned processor 401 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 401 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of this application can be directly embodied as being executed and completed by a hardware decoding processor, or by a combination of the hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the memory 402. The processor 401 reads the information in the memory 402 and combines its hardware to complete the steps of the foregoing method.

[0096] In an exemplary embodiment, the vehicle 400 may be implemented by one or more application specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field programmable gate arrays (FPGAs), general purpose processors, controllers, microcontroller units (MCUs), microprocessors, or other electronic components for performing the foregoing method.

[0097] In an exemplary embodiment, the present application embodiment also provides a computer-readable storage medium, such as a memory 402 including a computer program, and the computer program can be executed by a processor 401 of the vehicle 400 to complete the steps of the foregoing method. The computer-readable storage medium may be a FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or a memory such as a CD-ROM; it may also be various devices including one or any combination of the foregoing memories, such as AR devices, CR devices, VR devices, MR devices, etc.

[0098] A computer-readable storage medium, on which a computer program is stored, and when the computer program is run by a processor, it executes the vehicle solenoid valve fault detection method disclosed in the foregoing embodiments of the present application.

[0099] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. In addition, the features disclosed in several method or device embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method embodiments or device embodiments.

[0100] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, and all of them should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for detecting faults of a vehicle solenoid valve, characterized in that, The method includes: During the startup process of the vehicle, fault detection is performed on multiple vulnerable fault points of the solenoid valve of the vehicle according to a preset detection method to obtain a detection result; Based on the detection result, the fault state of the solenoid valve is determined.

2. The method according to claim 1, characterized in that, The multiple vulnerable fault points include: short power supply fault; Detecting the short power supply fault of the solenoid valve includes: Disconnecting the power signal between the solenoid valve and the vehicle power supply, and disconnecting the duty cycle signal of the pulse width modulation (PWM) output of the solenoid valve; Detecting the low-side voltage value of the solenoid valve; Based on the detection result, determining the fault state of the solenoid valve includes: If the low-side voltage value is greater than a first threshold, it is determined that the solenoid valve has a short power supply fault.

3. The method according to claim 1, wherein The multiple vulnerable fault points include: short circuit fault; Detecting the short circuit fault of the solenoid valve includes: Connecting the power signal between the solenoid valve and the vehicle power supply, and disconnecting the duty cycle signal of the pulse width modulation (PWM) output of the solenoid valve; Detecting the low-side voltage value of the solenoid valve; Based on the detection result, determining the fault state of the solenoid valve includes: If a first calculated value of the low-side voltage value is less than a second threshold, it is determined that the solenoid valve has a short circuit fault.

4. The method according to claim 1, wherein The multiple vulnerable fault points include: open circuit fault; Detecting the open circuit fault of the solenoid valve includes: Connecting the power signal between the solenoid valve and the vehicle power supply, and disconnecting the duty cycle signal of the pulse width modulation (PWM) output of the solenoid valve; Detecting the low-side voltage value of the solenoid valve; Based on the detection result, determining the fault state of the solenoid valve includes: If a second calculated value of the low-side voltage value is greater than the second threshold and less than a third threshold, it is determined that the solenoid valve has an open circuit fault.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: When it is determined that the solenoid valve has a fault, an alarm signal is output, where the alarm signals corresponding to different vulnerable fault points are different.

6. A fault detection device for a vehicle solenoid valve, characterized in that, The device includes: A detection unit for performing fault detection on multiple vulnerable fault points of the solenoid valve of the vehicle according to a preset detection method during the startup process of the vehicle to obtain a detection result; A determination unit for determining the fault state of the solenoid valve based on the detection result.

7. The device according to claim 6, characterized in that, The multiple vulnerable fault points include: short power supply fault; the device further includes: A control unit for controlling the disconnection of the power signal between the solenoid valve and the vehicle power supply and controlling the disconnection of the duty cycle signal of the pulse width modulation (PWM) output of the solenoid valve when detecting the short power supply fault of the solenoid valve; The detection unit is further configured to detect the low-side voltage value of the solenoid valve; The determination unit is configured to determine that the solenoid valve has a short power supply fault if the low-side voltage value is greater than a first threshold.

8. The device according to claim 7, characterized in that The multiple vulnerable fault points further include: short circuit fault; The control unit is further configured to control the connection of the power signal between the solenoid valve and the vehicle power supply and control the disconnection of the duty cycle signal of the pulse width modulation (PWM) output of the solenoid valve when detecting the short circuit fault of the solenoid valve; The detection unit is further configured to detect the low-side voltage value of the solenoid valve; The determining unit is configured to determine that a short - circuit fault occurs in the solenoid valve if a first calculated value of the low - side voltage value is less than a second threshold value.

9. The device according to claim 7 or 8, characterized in that, The multiple vulnerable points further include: an open - circuit fault; The control unit is further configured to control the connection of the power signal between the solenoid valve and the vehicle power supply and control the disconnection of the duty - cycle signal of the pulse - width modulation (PWM) output of the solenoid valve when detecting the open - circuit fault of the solenoid valve. The detecting unit is further configured to detect the low - side voltage value of the solenoid valve. The determining unit is configured to determine that an open - circuit fault occurs in the solenoid valve if a second calculated value of the low - side voltage value is greater than the second threshold value and less than a third threshold value.

10. A vehicle, characterized in that, The vehicle includes a processor and a memory, wherein, The memory is configured to store a computer program that can run on the processor; The processor is configured to execute the fault detection method of the vehicle solenoid valve according to any one of claims 1 to 5 when running the computer program.

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