Electronic thermostat fault diagnosis method, system, device, vehicle and storage medium

Abstract

The application discloses an electronic thermostat fault diagnosis method, system, device, vehicle and storage medium, wherein the method comprises the following steps: acquiring the engine outlet temperature; comparing the engine outlet temperature with the first preset temperature threshold to obtain a comparison result; in response to the comparison result indicating that the engine outlet temperature is greater than the first preset temperature threshold, acquiring the first radiator outlet temperature and the second radiator outlet temperature, wherein the first radiator outlet temperature is the radiator outlet temperature corresponding to the current time, and the second radiator outlet temperature is the radiator outlet temperature corresponding to the first time; and in response to the difference between the first radiator outlet temperature and the second radiator outlet temperature being less than a preset diagnosis threshold, determining that the electronic thermostat has a fault. The application solves the technical problem that the fault diagnosis method for the electronic thermostat in the prior art is not comprehensive.

Description

Technical Field

[0001] This invention belongs to the field of fault diagnosis, and specifically relates to a method, system, device, vehicle, and storage medium for diagnosing faults in electronic thermostats. Background Technology

[0002] As a crucial component of the engine cooling system, the electronic thermostat must be kept in good working order to ensure proper engine operation. Failure to open or delayed opening of the electronic thermostat will cause engine overheating. Opening too early or having leaks will prolong the engine's warm-up time.

[0003] In the existing technology, the methods for diagnosing electronic thermostat faults in order to monitor the working status of electronic thermostats are not comprehensive enough. Summary of the Invention

[0004] This invention provides a method, system, device, vehicle, and storage medium for diagnosing electronic thermostat faults, thereby addressing at least the technical problem that existing methods for diagnosing electronic thermostat faults are not comprehensive enough.

[0005] According to a first aspect of the present invention, an electronic thermostat fault diagnosis method is provided, comprising: acquiring an engine coolant outlet temperature; comparing the engine coolant outlet temperature with a first preset temperature threshold to obtain a comparison result; in response to the comparison result indicating that the engine coolant outlet temperature is greater than the first preset temperature threshold, acquiring a first radiator outlet temperature and a second radiator outlet temperature, wherein the first radiator outlet temperature is the radiator outlet temperature corresponding to the current moment, the second radiator outlet temperature is the radiator outlet temperature corresponding to the first moment, the first moment being the moment corresponding to when the engine coolant outlet temperature is the second preset temperature threshold, and the second preset temperature threshold being less than the first preset temperature threshold; and in response to the difference between the first radiator outlet temperature and the second radiator outlet temperature being less than a preset diagnostic threshold, determining that the electronic thermostat has a fault.

[0006] Optionally, the electronic thermostat fault diagnosis method further includes: in response to the time difference between the current time and the first time being greater than or equal to a preset time difference, obtaining the temperature of the first radiator outlet and the temperature of the second radiator outlet.

[0007] Optionally, the electronic thermostat fault diagnosis method further includes: in response to the time difference between the current time and the first time being less than a preset time difference, after a preset time interval, obtaining the temperature of the first radiator outlet and the temperature of the second radiator outlet.

[0008] Optionally, after determining that the electronic thermostat is faulty, the method further includes: recording a fault code in response to the fault in the electronic thermostat.

[0009] Optionally, after determining that the electronic thermostat is faulty, the method further includes: in response to the fault in the electronic thermostat, outputting a fault indication signal, wherein the fault indication signal is used to notify the user that the electronic thermostat has malfunctioned.

[0010] Optionally, the electronic thermostat fault diagnosis method further includes: in response to a comparison result indicating that the engine outlet temperature is less than or equal to a first preset temperature threshold, performing a step of acquiring the engine outlet temperature.

[0011] According to a second aspect of the present invention, an electronic thermostat fault diagnosis system is also provided, comprising:

[0012] An engine, with its coolant outlet and radiator inlet connected via an engine outlet pipe; a radiator, with its coolant outlet and engine inlet connected via an engine inlet pipe; a first temperature sensor located at the engine outlet for acquiring the coolant outlet temperature; a second temperature sensor located at the radiator outlet for acquiring the radiator outlet temperature; an electronic thermostat located at the engine outlet pipe for controlling the flow of coolant from the engine to the radiator; a memory and a processor, the memory storing a computer program and the processor configured to run the computer program to execute the electronic thermostat fault diagnosis method described in any of the first aspects above.

[0013] According to a third aspect of the present invention, an electronic thermostat fault diagnosis device is also provided, comprising:

[0014] A first acquisition module is used to acquire the engine outlet temperature; a comparison module is used to compare the engine outlet temperature with a first preset temperature threshold to obtain a comparison result; a second acquisition module is used to acquire the first radiator outlet temperature and the second radiator outlet temperature in response to the comparison result indicating that the engine outlet temperature is greater than the first preset temperature threshold, wherein the first radiator outlet temperature is the radiator outlet temperature at the current moment, and the second radiator outlet temperature is the radiator outlet temperature at the first moment, which is the moment when the engine outlet temperature is equal to the second preset temperature threshold, and the second preset temperature threshold is less than the first preset temperature threshold; a determination module is used to determine that the electronic thermostat is faulty in response to the difference between the first radiator outlet temperature and the second radiator outlet temperature being less than a preset diagnostic threshold.

[0015] Optionally, the second acquisition module is further configured to: acquire the temperature of the first radiator outlet and the temperature of the second radiator outlet in response to the time difference between the current time and the first time being greater than or equal to a preset time difference.

[0016] Optionally, the second acquisition module is further configured to: in response to the time difference between the current time and the first time being less than a preset time difference, acquire the temperature of the first radiator outlet and the temperature of the second radiator outlet after a preset time interval.

[0017] Optionally, the determination module is also used to: record a fault code in response to a fault in the electronic thermostat.

[0018] Optionally, the determining module is also configured to: output a fault indication signal in response to a fault in the electronic thermostat, wherein the fault indication signal is used to indicate to the user that the electronic thermostat has malfunctioned.

[0019] Optionally, the first acquisition module is further configured to: in response to a comparison result indicating that the engine outlet temperature is less than or equal to a first preset temperature threshold, perform the step of acquiring the engine outlet temperature.

[0020] According to a fourth aspect of the present invention, a vehicle is also provided, including a memory and a processor, and further including the electronic thermostat fault diagnosis system provided in the second aspect above, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the electronic thermostat fault diagnosis method described in any embodiment of the first aspect above.

[0021] According to a fifth aspect of the present invention, a non-volatile storage medium is also provided, wherein a computer program is stored in the non-volatile storage medium, and the computer program is configured to execute the electronic thermostat fault diagnosis method described in any embodiment of the first aspect when running on a computer or processor.

[0022] In this embodiment of the invention, the engine coolant outlet temperature is acquired; the engine coolant outlet temperature is compared with a first preset temperature threshold to obtain a comparison result; in response to the comparison result indicating that the engine coolant outlet temperature is greater than the first preset temperature threshold, the first radiator outlet temperature and the second radiator outlet temperature are acquired, wherein the first radiator outlet temperature is the radiator outlet temperature at the current moment, and the second radiator outlet temperature is the radiator outlet temperature at the first moment, which is the moment when the engine coolant outlet temperature is the second preset temperature threshold, and the second preset temperature threshold is less than the first preset temperature threshold; in response to the difference between the first radiator outlet temperature and the second radiator outlet temperature being less than a preset diagnostic threshold, it is determined that the electronic thermostat is faulty. This invention, by acquiring the engine coolant outlet temperature, the first radiator outlet temperature, and the second radiator outlet temperature, can compare multiple temperature values ​​at appropriate times to complete the fault diagnosis of the electronic thermostat and obtain the fault diagnosis result, thereby solving the technical problem that the existing fault diagnosis methods for electronic thermostats are not comprehensive enough. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0024] Figure 1 This is a flowchart of an electronic thermostat fault diagnosis method according to one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of an electronic thermostat fault diagnosis system according to one embodiment of the present invention;

[0026] Figure 3 This is a structural block diagram of an electronic thermostat fault diagnosis device according to one embodiment of the present invention. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] According to an embodiment of the present invention, an embodiment of an electronic thermostat fault diagnosis method is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system containing at least one set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0030] This method embodiment can also be executed in an electronic device including a memory and a processor, a similar control device, or in the cloud. Taking an electronic device as an example, the electronic device may include one or more processors and a memory for storing data. Optionally, the electronic device may also include a communication device for communication functions and a display device. Those skilled in the art will understand that the above structural description is merely illustrative and does not limit the structure of the electronic device. For example, the electronic device may include more or fewer components than described above, or have a different configuration than described above.

[0031] A processor may include one or more processing units. For example, a processor may include a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processing (DSP) chip, a microcontroller unit (MCU), a field-programmable gate array (FPGA), a neural network processing unit (NPU), a tensor processing unit (TPU), or an artificial intelligence (AI) processor. Different processing units may be independent components or integrated into one or more processors. In some instances, electronic devices may also include one or more processors.

[0032] The memory can be used to store computer programs, such as the computer program corresponding to the electronic thermostat fault diagnosis method in this embodiment of the invention. The processor implements the aforementioned electronic thermostat fault diagnosis method by running the computer program stored in the memory. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to the electronic device via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0033] The communication device is used to receive or send data via a network. Specific examples of the network mentioned above may include a wireless network provided by the mobile terminal's communication provider. In one example, the communication device includes a network interface controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the communication device may be a radio frequency (RF) module, used for wireless communication with the Internet. In some embodiments of this solution, the communication device is used to connect to mobile devices such as mobile phones and tablets, enabling the mobile device to send commands to the electronic device.

[0034] The display device can be a touchscreen liquid crystal display (LCD) or a touch display (also referred to as a "touchscreen" or "touch display screen"). The LCD allows a user to interact with the user interface of the electronic device. In some embodiments, the electronic device has a graphical user interface (GUI), which allows the user to interact with the GUI by touching a touch-sensitive surface with fingers and / or gestures. Executable instructions for performing these human-computer interaction functions are configured / stored in one or more processor-executable computer program products or readable storage media.

[0035] Figure 1 This is a flowchart of an electronic thermostat fault diagnosis method according to one embodiment of the present invention, such as... Figure 1 As shown, the method includes the following steps:

[0036] Step S101: Obtain the engine outlet temperature.

[0037] Specifically, the engine outlet temperature refers to the temperature of the coolant at the engine outlet, which can be obtained through a temperature sensor.

[0038] Step S102: Compare the engine outlet temperature with the first preset temperature threshold to obtain the comparison result.

[0039] Specifically, after obtaining the engine outlet temperature, the engine outlet temperature is compared with a first preset temperature threshold obtained through calibration to obtain a comparison result. It can be understood that the comparison result includes cases where the engine outlet temperature is greater than the first preset temperature threshold, cases where the engine outlet temperature is less than the first preset temperature threshold, and cases where the engine outlet temperature is equal to the first preset temperature threshold.

[0040] Step S103: In response to the comparison result showing that the engine outlet temperature is greater than the first preset temperature threshold, the first radiator outlet temperature and the second radiator outlet temperature are obtained.

[0041] Wherein, the temperature of the first radiator outlet is the radiator outlet temperature at the current moment, the temperature of the second radiator outlet is the radiator outlet temperature at the first moment, the first moment is the moment when the engine outlet temperature is the second preset temperature threshold, and the second preset temperature threshold is less than the first preset temperature threshold.

[0042] Specifically, when the comparison results show that the engine outlet coolant temperature is greater than the first preset temperature threshold, it indicates that the coolant temperature at the engine outlet is too high, and the electronic thermostat needs to be diagnosed. The first preset temperature threshold is the diagnostic point temperature for the electronic thermostat. When diagnosing the electronic thermostat, the temperatures at the first and second radiator outlets are first obtained for subsequent fault assessment.

[0043] Step S104: In response to the temperature difference between the outlet temperature of the first radiator and the outlet temperature of the second radiator being less than a preset diagnostic threshold, it is determined that the electronic thermostat is faulty.

[0044] Specifically, when the temperatures at the outlets of the first and second radiators are obtained, the difference between the temperatures at the outlets of the first and second radiators is determined. If the difference is less than a preset diagnostic threshold, it indicates that the coolant has not flowed through the electronic thermostat into the radiator, and the electronic thermostat is found to be faulty.

[0045] It is understandable that the diagnostic threshold is a temperature value. The preset values ​​mentioned above can all be calibrated according to actual needs.

[0046] In this embodiment of the invention, the engine coolant outlet temperature is acquired; the engine coolant outlet temperature is compared with a first preset temperature threshold to obtain a comparison result; in response to the comparison result indicating that the engine coolant outlet temperature is greater than the first preset temperature threshold, the first radiator outlet temperature and the second radiator outlet temperature are acquired, wherein the first radiator outlet temperature is the radiator outlet temperature at the current moment, and the second radiator outlet temperature is the radiator outlet temperature at the first moment, which is the moment when the engine coolant outlet temperature is the second preset temperature threshold, and the second preset temperature threshold is less than the first preset temperature threshold; in response to the difference between the first radiator outlet temperature and the second radiator outlet temperature being less than a preset diagnostic threshold, it is determined that the electronic thermostat is faulty. This invention, by acquiring the engine coolant outlet temperature, the first radiator outlet temperature, and the second radiator outlet temperature, can compare multiple temperature values ​​at appropriate times to complete the fault diagnosis of the electronic thermostat and obtain the fault diagnosis result, thereby solving the technical problem that the existing fault diagnosis methods for electronic thermostats are not comprehensive enough.

[0047] Optionally, the electronic thermostat fault diagnosis method further includes: in response to the time difference between the current time and the first time being greater than or equal to a preset time difference, obtaining the temperature of the first radiator outlet and the temperature of the second radiator outlet.

[0048] Specifically, in addition to the engine outlet temperature being greater than the first preset temperature threshold, the fault detection trigger conditions for the electronic thermostat also include the time difference between the current moment and the first moment being greater than or equal to a preset time difference. When this condition is met, the temperatures of the first radiator outlet and the second radiator outlet need to be obtained for fault diagnosis of the electronic thermostat.

[0049] It is understandable that when the preset time difference is pushed back from the first moment, the time point when the electronic thermostat needs to be diagnosed is reached.

[0050] Optionally, the electronic thermostat fault diagnosis method further includes: in response to the time difference between the current time and the first time being less than a preset time difference, after a preset time interval, obtaining the temperature of the first radiator outlet and the temperature of the second radiator outlet.

[0051] Specifically, when the time difference between the current moment and the first moment is less than the preset time difference, the time node for fault diagnosis of the electronic thermostat has not yet been reached. After a preset time interval, the time node for fault diagnosis of the electronic thermostat is reached, and the temperatures of the first radiator outlet and the second radiator outlet are obtained for fault diagnosis of the electronic thermostat.

[0052] Optionally, in some embodiments of the present invention, when the time difference between the current time and the first time is less than a preset time difference, the time difference between the current time and the first time is calculated again until the difference between the current time and the first time is greater than or equal to a preset time threshold, and the temperatures of the first radiator outlet and the second radiator outlet are obtained for fault diagnosis of the electronic thermostat.

[0053] Optionally, after determining that the electronic thermostat is faulty, the method further includes: recording a fault code in response to the fault in the electronic thermostat.

[0054] Specifically, when it is determined that the electronic thermostat is faulty after step S104, the fault code corresponding to the electronic thermostat fault is recorded. The fault code can be used for subsequent vehicle repair and maintenance.

[0055] Optionally, after determining that the electronic thermostat is faulty, the method further includes: in response to the fault in the electronic thermostat, outputting a fault indication signal, wherein the fault indication signal is used to notify the user that the electronic thermostat has malfunctioned.

[0056] For example, when it is determined that the electronic thermostat is faulty after step S104, the vehicle display device illuminates a fault light.

[0057] It should be noted that fault indication signals can also be audible.

[0058] Optionally, the electronic thermostat fault diagnosis method further includes: in response to a comparison result indicating that the engine outlet temperature is less than or equal to a first preset temperature threshold, performing a step of acquiring the engine outlet temperature.

[0059] Specifically, when the engine outlet temperature in the comparison results is less than or equal to the first preset temperature threshold, it indicates that the time for fault diagnosis of the electronic thermostat has not yet been reached. The step of obtaining the engine outlet temperature continues, and then the relationship between the engine outlet temperature and the first preset temperature threshold is continuously judged until the engine outlet temperature is greater than the first preset temperature threshold. Then, the first radiator outlet temperature and the second radiator outlet temperature are obtained for fault diagnosis of the electronic thermostat.

[0060] Reference Figure 2This invention provides an electronic thermostat fault diagnosis system, comprising: an engine, wherein the engine coolant outlet and the radiator coolant inlet are connected via an engine outlet pipe; a radiator, wherein the radiator coolant outlet and the engine coolant inlet are connected via an engine inlet pipe; a first temperature sensor disposed at the engine coolant outlet for acquiring the engine coolant outlet temperature; a second temperature sensor disposed at the radiator coolant outlet for acquiring the radiator coolant outlet temperature; an electronic thermostat disposed at the engine outlet pipe for controlling the flow of coolant from the engine to the radiator; a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the electronic thermostat fault diagnosis method according to any one of the first aspects described above.

[0061] It should be noted that the processor and memory mentioned above together constitute the engine control unit.

[0062] It is understood that the electronic thermostat fault diagnosis method provided in the embodiments of the present invention can be executed in the electronic thermostat fault diagnosis system provided in the above embodiments.

[0063] In this embodiment, the electronic thermostat, as a crucial component of the engine cooling system, must maintain good working condition to ensure normal engine operation. Failure to open or delayed opening of the electronic thermostat will cause engine overheating. Opening too early or having a leak will prolong the engine's warm-up time. The electronic thermostat fault detection method provided by this invention can promptly diagnose whether the electronic thermostat is malfunctioning, reminding users or maintenance personnel to repair or replace the electronic thermostat as soon as possible to avoid engine overheating, resulting in reduced engine power, increased risk of detonation, and component damage.

[0064] Based on the aforementioned electronic thermostat fault diagnosis system, for example, when the engine coolant outlet temperature is less than 80°C (calibrated value), the engine control unit will not send a control signal to the electronic thermostat in order to rapidly warm up the engine. When the engine coolant temperature reaches 80°C (calibrated value), the engine control unit will control the electronic thermostat to open, meaning the large circulation of the cooling system begins, and the coolant flows through the radiator and back to the engine, achieving the purpose of engine cooling. Therefore, fault diagnosis of the electronic thermostat is performed at a point after the engine coolant temperature reaches 80°C; this point is designated as the diagnostic point. The diagnostic point can be set by delaying the time M minutes from when the engine coolant outlet temperature reaches 80°C, or it can be set when the engine coolant outlet temperature rises to D°C (D > 80°C). When the system reaches the diagnostic point, it determines the temperature difference between the radiator outlet temperature at the diagnostic point and the radiator outlet temperature when the engine coolant temperature reaches 80°C. The temperature difference is compared with the preset diagnostic threshold. If the temperature difference is less than the diagnostic threshold, it means that the coolant at the engine end is not flowing through the electronic thermostat into the radiator, indicating that the electronic thermostat has a fault of not being able to open or opening too late. The engine control unit records the fault code, and the fault indicator light on the instrument panel illuminates.

[0065] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0066] This embodiment also provides an electronic thermostat fault diagnosis device, which is used to implement the above embodiments and preferred embodiments, and will not be repeated as described previously. As used below, the term "module" refers to a combination of software and / or hardware that can perform a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0067] Figure 3 This is a structural block diagram of an electronic thermostat fault diagnosis device 200 according to one embodiment of the present invention, as shown below. Figure 3As shown, taking an electronic thermostat fault diagnosis device 200 as an example, it includes: a first acquisition module 201, used to acquire the engine coolant outlet temperature; a comparison module 202, used to compare the engine coolant outlet temperature with a first preset temperature threshold to obtain a comparison result; a second acquisition module 203, used to acquire a first radiator outlet temperature and a second radiator outlet temperature in response to the comparison result indicating that the engine coolant outlet temperature is greater than the first preset temperature threshold, wherein the first radiator outlet temperature is the radiator outlet temperature corresponding to the current moment, and the second radiator outlet temperature is the radiator outlet temperature corresponding to the first moment, the first moment being the moment when the engine coolant outlet temperature is the second preset temperature threshold, and the second preset temperature threshold is less than the first preset temperature threshold; and a determination module 204, used to determine that the electronic thermostat has a fault in response to the difference between the first radiator outlet temperature and the second radiator outlet temperature being less than a preset diagnostic threshold.

[0068] Optionally, the second acquisition module 203 is further configured to: acquire the temperature of the first radiator outlet and the temperature of the second radiator outlet in response to the time difference between the current time and the first time being greater than or equal to a preset time difference.

[0069] Optionally, the second acquisition module 203 is further configured to: in response to the time difference between the current time and the first time being less than a preset time difference, acquire the temperature of the first radiator outlet and the temperature of the second radiator outlet after a preset time interval.

[0070] Optionally, the determination module 204 is also used to: record a fault code in response to a fault in the electronic thermostat.

[0071] Optionally, the determining module 204 is further configured to: output a fault indication signal in response to a fault in the electronic thermostat, wherein the fault indication signal is used to indicate to the user that the electronic thermostat has malfunctioned.

[0072] Optionally, the first acquisition module 201 is further configured to: in response to a comparison result indicating that the engine outlet temperature is less than or equal to a first preset temperature threshold, perform the step of acquiring the engine outlet temperature.

[0073] Embodiments of the present invention also provide a vehicle including a memory and a processor, and further including the electronic thermostat fault diagnosis system provided in the above embodiments. The memory stores a computer program, and the processor is configured to run the computer program to perform the electronic thermostat fault diagnosis method described in any of the above embodiments.

[0074] Optionally, in this embodiment, the processor in the vehicle can be configured to run a computer program to perform the following steps:

[0075] Step S101: Obtain the engine outlet temperature.

[0076] Step S102: Compare the engine outlet temperature with the first preset temperature threshold to obtain the comparison result.

[0077] Step S103: In response to the comparison result showing that the engine outlet temperature is greater than the first preset temperature threshold, the first radiator outlet temperature and the second radiator outlet temperature are obtained.

[0078] Step S104: In response to the temperature difference between the outlet temperature of the first radiator and the outlet temperature of the second radiator being less than a preset diagnostic threshold, it is determined that the electronic thermostat is faulty.

[0079] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0080] Embodiments of the present invention also provide a non-volatile storage medium storing a computer program, wherein the computer program is configured to execute the electronic thermostat fault diagnosis method described in any of the above embodiments when running on a computer or processor.

[0081] Optionally, in this embodiment, the computer program described above may be configured to store a computer program for performing the following steps:

[0082] Step S101: Obtain the engine outlet temperature.

[0083] Step S102: Compare the engine outlet temperature with the first preset temperature threshold to obtain the comparison result.

[0084] Step S103: In response to the comparison result showing that the engine outlet temperature is greater than the first preset temperature threshold, the first radiator outlet temperature and the second radiator outlet temperature are obtained.

[0085] Step S104: In response to the temperature difference between the outlet temperature of the first radiator and the outlet temperature of the second radiator being less than a preset diagnostic threshold, it is determined that the electronic thermostat is faulty.

[0086] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0087] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0088] In the embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of modules can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through interfaces, or indirect couplings or communication connections between modules, and may be electrical or other forms.

[0089] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0090] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0091] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0092] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for diagnosing faults in an electronic thermostat, characterized in that, include: Obtain the engine outlet temperature; The comparison result is obtained by comparing the temperature of the engine outlet with the first preset temperature threshold. In response to the comparison result indicating that the engine coolant outlet temperature is greater than the first preset temperature threshold, the first radiator outlet temperature and the second radiator outlet temperature are obtained. The first radiator outlet temperature is the radiator outlet temperature at the current moment, and the second radiator outlet temperature is the radiator outlet temperature at the first moment. The first moment is the moment when the engine coolant outlet temperature is at the second preset temperature threshold. When the engine coolant temperature reaches the second preset temperature threshold, the engine control unit will control the electronic thermostat to open. The second preset temperature threshold is less than the first preset temperature threshold. If the temperature difference between the outlet temperatures of the first and second radiators is less than a preset diagnostic threshold, it is determined that the electronic thermostat is faulty.

2. The electronic thermostat fault diagnosis method according to claim 1, characterized in that, Also includes: In response to the time difference between the current time and the first time being greater than or equal to a preset time difference, the temperatures at the outlets of the first and second radiators are obtained.

3. The electronic thermostat fault diagnosis method according to claim 2, characterized in that, Also includes: In response to the fact that the time difference between the current time and the first time is less than a preset time difference, after a preset time interval, the temperatures of the first radiator outlet and the second radiator outlet are obtained.

4. The electronic thermostat fault diagnosis method according to claim 1, characterized in that, After determining that the electronic thermostat is faulty, the process also includes: In response to a malfunction in the electronic thermostat, a fault code is recorded.

5. The electronic thermostat fault diagnosis method according to claim 1, characterized in that, After determining that the electronic thermostat is faulty, the process also includes: In response to a malfunction in the electronic thermostat, a fault indication signal is output, wherein the fault indication signal is used to notify the user that the electronic thermostat has malfunctioned.

6. The electronic thermostat fault diagnosis method according to claim 1, characterized in that, Also includes: In response to the comparison result indicating that the engine outlet temperature is less than or equal to the first preset temperature threshold, the step of obtaining the engine outlet temperature is performed.

7. An electronic thermostat fault diagnosis system, characterized in that, include: The engine coolant outlet and the radiator coolant inlet are connected via the engine coolant outlet pipe. The radiator outlet is connected to the engine inlet via the engine water inlet pipe. A first temperature sensor is installed at the engine outlet to obtain the engine outlet temperature. A second temperature sensor is installed at the outlet of the radiator to obtain the temperature at the outlet of the radiator. An electronic thermostat is installed on the engine outlet pipe to control the flow of coolant from the engine to the radiator; A memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the electronic thermostat fault diagnosis method as described in any one of claims 1 to 6.

8. A fault diagnosis device for electronic thermostats, characterized in that, include: The first acquisition module is used to acquire the temperature of the engine's liquid outlet. The comparison module is used to compare the temperature of the engine outlet with a first preset temperature threshold to obtain a comparison result; The second acquisition module is used to acquire the first radiator outlet temperature and the second radiator outlet temperature in response to the comparison result indicating that the engine outlet temperature is greater than the first preset temperature threshold. The first radiator outlet temperature is the radiator outlet temperature at the current moment, and the second radiator outlet temperature is the radiator outlet temperature at the first moment. The first moment is the moment when the engine outlet temperature is the second preset temperature threshold. When the engine coolant temperature reaches the second preset temperature threshold, the engine control unit will control the electronic thermostat to open. The second preset temperature threshold is less than the first preset temperature threshold. The determination module is used to determine that the electronic thermostat is faulty when the difference between the temperature at the outlet of the first radiator and the temperature at the outlet of the second radiator is less than a preset diagnostic threshold.

9. A vehicle comprising a memory and a processor, characterized in that, The vehicle further includes the electronic thermostat fault diagnosis system of claim 7, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the electronic thermostat fault diagnosis method of any one of claims 1 to 6.

10. A non-volatile storage medium, characterized in that, The non-volatile storage medium stores a computer program, wherein the computer program is configured to execute the electronic thermostat fault diagnosis method as described in any one of claims 1 to 6 when run on a computer or processor.

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