Engine high-temperature backwater diagnosis method and device, storage medium and electronic equipment

Abstract

The invention provides an engine high-temperature backwater diagnosis method and device, a storage medium and electronic equipment, and is applied to the technical field of engine diagnos.The method comprises the steps that the water temperature and working condition data of an engine are collected in real time; the water temperature is matched with the preset water temperature in real time, and when the water temperature is higher than the preset water temperature, the duration when the water temperature is higher than the preset water temperature is recorded; whether the engine meets a preset high-temperature backwater counting condition or not is determined by applying the duration and the working condition data; when the engine meets the high-temperature backwater counting condition, the high-temperature backwater counting value of the engine in the preset time period is updated; and when the updated high-temperature water return count value is higher than a preset value, determining that the engine has a high-temperature water return fault. In the whole diagnosis process, whether the engine has the high-temperature backwater fault or not can be judged only through the water temperature and working condition data of the engine, the diagnosis process is simple, the manual participation degree is reduced, and the cost needed by diagnosis is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of engine diagnosis, and in particular to a method and device for diagnosing engine high-temperature water return, a storage medium and electronic equipment. Background Art

[0002] The diesel engine industry, which supports express delivery vehicles, has increasingly higher requirements for timeliness. For problems such as frequent engine torque limitation and flameout caused by high water temperature, which leads to functional failure of the engine, it is necessary to identify and diagnose in advance, and then remind users to take the initiative to repair it to avoid greater losses.

[0003] The inventors have found that currently, when diagnosing a vehicle's high-temperature water return fault, it is usually done manually, and manual diagnosis mainly relies on the experience and skills of maintenance personnel. However, there are differences in the experience and skill levels of different maintenance personnel, which may affect the accuracy and consistency of the diagnosis results. Manual diagnosis takes a long time and may also require the vehicle to be disassembled and inspected, which is costly. Summary of the invention

[0004] In view of this, the embodiments of the present application provide an engine high-temperature water return diagnosis method and device, a storage medium and an electronic device. The scheme provided by the present application is applied to use the engine's water temperature and operating condition data for diagnosis. The diagnosis process does not rely on the staff's experience and skills, reducing the impact of the staff's experience and skills on the diagnosis results, making the diagnosis results consistent, improving the accuracy of the diagnosis results, reducing manual participation, and reducing the diagnosis results.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] A method for diagnosing high-temperature water return of an engine, comprising:

[0007] Collect engine water temperature and operating condition data in real time;

[0008] Compare the water temperature with the preset water temperature in real time, and when the water temperature is higher than the preset water temperature, record the duration for which the water temperature is higher than the preset water temperature;

[0009] Using the duration and the operating condition data, determining whether the engine meets a preset high-temperature water return counting condition;

[0010] When the engine meets the high-temperature water return counting condition, updating the high-temperature water return counting value of the engine within a preset time period;

[0011] When the updated high-temperature water return count value is higher than a preset value, it is determined that a high-temperature water return fault occurs in the engine.

[0012] In the above method, optionally, the applying the duration and the operating condition data to determine whether the engine meets a preset high-temperature return water counting condition includes:

[0013] Determine whether the duration is less than a preset first duration;

[0014] When the duration is less than a preset first duration, using the operating condition data to determine whether the engine is in a high-temperature return water condition;

[0015] When the engine is in a high-temperature water return condition, it is determined that the engine meets a preset high-temperature water return counting condition.

[0016] In the above method, optionally, the using the operating condition data to determine whether the engine is in a high-temperature water return condition includes:

[0017] Acquiring vehicle speed, engine speed and torque from the operating condition data;

[0018] Using the vehicle speed to determine whether the engine is in a normal driving state, whether the engine speed is in a preset speed range, and whether the torque is in a preset torque range;

[0019] When the engine is in a normal driving state, the engine speed is in the preset speed range, and the torque is in the preset torque range, it is determined that the engine is in a high-temperature water return condition.

[0020] The above method, optionally, when the engine does not meet the high temperature return water counting condition, further includes:

[0021] Determine whether the duration is greater than a preset high temperature duration;

[0022] When the duration is greater than the high temperature duration, it is determined that the engine is in an abnormally high water temperature state, and an abnormally high water temperature warning is issued.

[0023] The above method may optionally further include:

[0024] Issue a warning for high-temperature return water failure and provide a troubleshooting strategy for high-temperature return water failure.

[0025] An engine high temperature water return diagnostic device, comprising:

[0026] A collection unit, used to collect engine water temperature and operating condition data in real time;

[0027] A recording unit, used to compare the water temperature with a preset water temperature in real time, and when the water temperature is higher than the preset water temperature, record the duration for which the water temperature is higher than the preset water temperature;

[0028] A first determination unit, configured to determine whether the engine meets a preset high-temperature return water counting condition by applying the duration and the operating condition data;

[0029] An updating unit, configured to update a high temperature return water count value of the engine within a preset time period when the engine meets the high temperature return water count condition;

[0030] The second determination unit is used to determine that a high temperature return water fault occurs in the engine when the updated high temperature return water count value is higher than a preset value.

[0031] In the above device, optionally, the first determination unit executes a process of applying the duration and the operating condition data to determine whether the engine meets a preset high-temperature return water counting condition, including:

[0032] Determine whether the duration is less than a preset first duration;

[0033] When the duration is less than a preset first duration, using the operating condition data to determine whether the engine is in a high-temperature return water condition;

[0034] When the engine is in a high-temperature water return condition, it is determined that the engine meets a preset high-temperature water return counting condition.

[0035] In the above device, optionally, the first determining unit executes a process of using the operating condition data to determine whether the engine is in a high-temperature water return operating condition, including:

[0036] Acquiring vehicle speed, engine speed and torque from the operating condition data;

[0037] Using the vehicle speed to determine whether the engine is in a normal driving state, whether the engine speed is in a preset speed range, and whether the torque is in a preset torque range;

[0038] When the engine is in a normal driving state, the engine speed is in the preset speed range, and the torque is in the preset torque range, it is determined that the engine is in a high-temperature water return condition.

[0039] The above device may optionally further include:

[0040] A judgment unit is used to judge whether the duration is greater than a preset high temperature duration when the engine does not meet the high temperature return water counting condition; when the duration is greater than the high temperature duration, it is determined that the engine is in an abnormally high water temperature state and an abnormally high water temperature warning is issued.

[0041] The above method may optionally further include:

[0042] The early warning unit is used to issue an early warning of a high-temperature return water fault and provide a troubleshooting strategy for the high-temperature return water fault.

[0043] A storage medium includes stored instructions, wherein when the instructions are executed, the device where the storage medium is located is controlled to execute the engine high-temperature water return diagnostic method as described above.

[0044] An electronic device includes a memory and one or more instructions, wherein the one or more instructions are stored in the memory and configured to be executed by one or more processors to perform the above-mentioned engine high-temperature water return diagnosis method.

[0045] Compared with the prior art, this application has the following advantages:

[0046] The present application provides a method and device for diagnosing high-temperature water return in an engine, a storage medium and an electronic device, including: real-time acquisition of the water temperature and working condition data of the engine; real-time comparison of the water temperature with the preset water temperature, and when the water temperature is higher than the preset water temperature, recording the duration of the water temperature being higher than the preset water temperature; using the duration and working condition data to determine whether the engine meets the preset high-temperature water return counting condition; when the engine meets the high-temperature water return counting condition, updating the high-temperature water return count value of the engine within a preset time period; when the updated high-temperature water return count value is higher than the preset value, determining that the engine has a high-temperature water return fault. During the entire diagnostic process, only the water temperature and working condition data of the engine are needed to determine whether the engine has a high-temperature water return fault, less data is used, and the diagnostic process is simple, reducing manual participation and effectively reducing the cost required for diagnosis. It can also avoid the deterioration of engine faults and the occurrence of high-risk reliability faults such as cylinder scuffing. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0048] Figure 1 A flow chart of a method for diagnosing high-temperature water return from an engine provided in an embodiment of the present application;

[0049] Figure 2 A flowchart for determining whether the engine meets the preset high-temperature return water counting condition based on the application duration and the operating condition data provided in the embodiment of the present application;

[0050] Figure 3An example diagram of a high water temperature fault fishbone diagram provided in an embodiment of the present application;

[0051] Figure 4 An example diagram of typical high-temperature backflow fault vehicle characteristics provided in an embodiment of the present application;

[0052] Figure 5 A structural example diagram of a high-temperature backflow diagnostic device for a motor provided in an embodiment of the present application;

[0053] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0055] In this application, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0056] Terminology explanation:

[0057] High-temperature water return: The water temperature of the engine is too high (generally defined as water temperature above 100°C) during operation. This is caused by high-temperature gas (from different sources) entering the engine water circulation, usually accompanied by a lack of water in the vehicle's expansion tank.

[0058] As can be seen from the background technology, traditionally, high-temperature water return failures of vehicles can only be diagnosed by staff, and the diagnosis process may require disassembly and inspection of the vehicle. Traditional diagnostic methods take a relatively long time, have low diagnostic efficiency, and high diagnostic costs.

[0059] In order to solve the above-mentioned problems, the present application provides an engine high-temperature water return diagnostic solution. The present application uses the engine's water temperature and operating condition data for diagnosis. The diagnostic process does not rely on the staff's experience and skills, reduces the impact of the staff's experience and skills on the diagnostic results, makes the diagnostic results consistent, improves the accuracy of the diagnostic results, reduces manual involvement, and reduces the diagnostic results.

[0060] The present application can be applied to a vehicle control system or controller, such as a vehicle flow CPU or a vehicle processor.

[0061] Reference Figure 1 , is a flow chart of an engine high temperature water return diagnosis method provided in an embodiment of the present application, and the specific process refers to S101-S105, which is specifically described as follows:

[0062] S101. Collect engine water temperature and operating condition data in real time.

[0063] The engine water temperature and operating condition data are collected in real time from the vehicle's Electronic Control Unit (ECU).

[0064] The engine operating data includes but is not limited to data on vehicle parameters such as engine speed, torque, and vehicle speed.

[0065] S102, comparing the water temperature with the preset water temperature in real time, and when the water temperature is higher than the preset water temperature, recording the duration for which the water temperature is higher than the preset water temperature.

[0066] After real-time collection of the engine's water temperature and operating condition data, the water temperature can be compared with the preset water temperature in real time, so that when the water temperature is higher than the preset water temperature, the duration for which the engine's water temperature is higher than the preset water temperature can be recorded.

[0067] For example, in the process of comparing the water temperature with the preset water temperature in real time, the water temperature at 9:10 is higher than the preset water temperature for 1 minute. It can be known that the water temperature from 9:10 to 9:11 is continuously higher than the preset water temperature.

[0068] Furthermore, since the collected water temperature is continuously compared with the preset water temperature, during the continuous comparison process, there may be multiple cases where the water temperature is higher than the preset water temperature.

[0069] For example, during one day, when the water temperature is compared with the preset water temperature in real time, the water temperature at 9:15 is higher than the preset water temperature. Through continuous comparison, it is found that the water temperature is higher than the preset water temperature for 90 seconds. It can be known that the water temperature from 9:15 to 9:16:30 is higher than the preset water temperature; the water temperature at 14:01 is higher than the preset water temperature. Through continuous comparison, it is found that the water temperature is higher than the preset water temperature for 1 minute. It can be known that the water temperature from 14:01 to 14:02 is continuously higher than the preset water temperature.

[0070] The preset water temperature can be set according to actual needs. Preferably, the preset water temperature can be set to 105°C.

[0071] Furthermore, step S103 needs to be executed each time the duration is obtained.

[0072] S103: Using the duration and the operating condition data, determine whether the engine meets a preset high-temperature return water counting condition.

[0073] Reference Figure 2 , which is a flowchart of determining whether the engine meets the preset high-temperature return water counting condition based on the application duration and the operating condition data provided in the embodiment of the present application, and is specifically described as follows:

[0074] S201, determine whether the duration is less than a preset first duration; when the duration is less than the preset first duration, execute S202; when the duration is not less than the preset first duration, execute S206.

[0075] In the embodiment provided in the present application, when the duration is less than the preset first duration, the operating condition data is used to determine whether the engine is in a high-temperature water return condition. The specific process of the determination can refer to S202-S203.

[0076] The preset first duration can be set according to actual needs. Preferably, the first duration can be set to 2 minutes.

[0077] When the duration is not less than the preset first duration, it is determined that the engine does not meet the preset high-temperature water return counting condition.

[0078] S202: Obtain vehicle speed, engine speed and torque from operating condition data.

[0079] S203, using the vehicle speed to determine whether the engine is in a normal driving state, determine whether the engine speed is in a preset speed range, and determine whether the torque is in a preset torque range; when the engine is in a normal driving state, the engine speed is in the preset speed range, and the torque is in the preset torque range, execute S204; otherwise, execute S206.

[0080] When the vehicle speed is used to determine whether the engine is in a normal driving state, it can be determined whether the vehicle speed is greater than zero. When the vehicle speed is greater than zero, it is determined that the engine is in a normal driving state. When the vehicle speed is not greater than zero, it is determined that the engine is not in a normal driving state.

[0081] The preset torque interval can be set according to actual needs. Preferably, the preset torque interval is set to 0 to the maximum torque. In other words, the range of the preset torque interval is between 0 and the maximum torque, and the maximum torque can be the maximum torque of the engine.

[0082] The preset speed range can be set according to actual needs. Preferably, the preset speed range is set from idle to maximum idling speed. In other words, the range of the preset speed range is between idle and maximum idling speed.

[0083] When the engine is not in a normal driving state, and / or the engine speed is not in a preset speed range, and / or the torque is not in a preset torque range, it is determined that the engine is not in a high-temperature reflow condition, that is, it is determined that the engine does not meet the preset high-temperature reflow counting condition.

[0084] S204: Determine that the engine is in a high-temperature water return condition.

[0085] S205: Determine whether the engine meets a preset high-temperature water return counting condition.

[0086] Preferably, when determining that the engine meets the preset high-temperature water return technical conditions, it can be determined that the engine has intermittent high water temperature caused by high-temperature gas. When this situation occurs frequently in the engine, the engine will have a high-temperature water return failure.

[0087] S206: Determine that the engine does not meet a preset high-temperature water return counting condition.

[0088] In the method provided in the embodiment of the present application, the water temperature and operating condition data of the engine collected in real time are used to determine in real time whether the engine meets the high-temperature water return counting conditions. When the engine meets the high-temperature water return counting conditions, the engine has intermittent high water temperature caused by high-temperature gas. The present application can quickly determine whether the engine has intermittent high water temperature caused by high-temperature gas by only using the water temperature and operating condition data of the engine. The judgment process reduces manual participation and reduces the cost required for the judgment process.

[0089] S104: When the engine meets the high-temperature water return counting condition, update the high-temperature water return counting value of the engine within a preset time period.

[0090] Preferably, when the engine meets the high-temperature water return technical conditions, the high-temperature water return count value of the engine within the current preset time period is updated.

[0091] Preferably, the preset time period can be set according to actual needs. For example, one day can be used as a preset time period. Specifically, the current preset time period is the current day.

[0092] S105: When the updated high-temperature water return count value is higher than a preset value, it is determined that a high-temperature water return fault occurs in the engine.

[0093] After updating the high-temperature water return count value, it can be determined whether the updated high-temperature water return count value is higher than the preset value. When the updated high-temperature water return count value is higher than the preset value, it is determined that the engine has a high-temperature water return fault. It can also be understood that the high-temperature water return count value within the current preset time period is already higher than the preset value, and at this time it is determined that the engine has a high-temperature water return fault.

[0094] The preset value can be set according to actual needs. Preferably, the preset value can be set to 10.

[0095] Preferably, when it is determined that a high-temperature water return fault occurs in the engine, a high-temperature water return fault warning is issued, and a high-temperature water return fault troubleshooting strategy is provided.

[0096] The high-temperature water return fault warning may be issued by lighting a red light on the display, thereby reminding the vehicle driver to proactively report for maintenance service; preferably, the troubleshooting strategy includes but is not limited to troubleshooting air compressor blowby and cylinder head gasket blowby.

[0097] In the method provided in the embodiment of the present application, the water temperature and operating condition data of the engine are collected in real time; the water temperature is compared with the preset water temperature in real time, and when the water temperature is higher than the preset water temperature, the duration of the water temperature being higher than the preset water temperature is recorded; the duration and operating condition data are used to determine whether the engine meets the preset high-temperature return water counting condition; when the engine meets the high-temperature return water counting condition, the high-temperature return water count value of the engine within the preset time period is updated; when the updated high-temperature return water count value is higher than the preset value, it is determined that the engine has a high-temperature return water fault. During the entire diagnostic process, only the engine's water temperature and operating condition data are needed to determine whether the engine has a high-temperature return water fault, less data is used, and the diagnostic process is simple, which reduces manual participation and effectively reduces the cost required for diagnosis. It can also avoid the deterioration of engine faults and the occurrence of high-risk reliability faults such as cylinder scuffing.

[0098] In the method provided in the embodiment of the present application, when the engine does not meet the high-temperature return water counting condition, it is determined whether the duration is greater than the preset high-temperature duration; when the duration is greater than the high-temperature duration, it is determined that the engine is in an abnormally high water temperature state, and an abnormally high water temperature warning is issued; further, when the duration is greater than the high-temperature duration, it is determined that the engine continues to be high temperature and the cooling capacity is reduced, which is different from the intermittent high water temperature caused by high-temperature gas. This situation is a high water temperature caused by insufficient cooling of the heat exchanger, poor fan heat dissipation, abnormal engine operation, full-load climbing, water leakage, water tank water shortage and other problems. The display lights up purple to remind the driver to check by himself.

[0099] The inventor has found that during the operation of the engine, a high water temperature fault may occur. There are many factors that lead to high water temperature, such as Figure 3 As shown, an example diagram of a high water temperature fault fishbone diagram is provided for an embodiment of the present application. Among them, the sealing failure of the engine cylinder gasket, the attenuation of the bolt axial force, the weak failure of the engine cylinder head, and the blowby of the air compressor will cause the engine to have water backflow. The high-temperature and high-pressure combustion gas in the engine cylinder or the air compressor cylinder will blow into the water cavity, causing the water temperature to increase intermittently, and the single high water temperature will last for a short time; if the engine continues to run for a long time, the water backflow fault will worsen and the gas backflow will intensify. On the one hand, the cooling capacity decreases; on the other hand, the high-temperature gas gathers in the expansion water tank, forming a certain gas pressure, and the antifreeze will be squeezed out of the expansion water tank, causing the engine to lack water.

[0100] High water temperature is caused by engine non-return water failure, insufficient cooling of the heat exchanger, poor fan heat dissipation, abnormal engine operation, full-load climbing, EGR valve leakage, etc., which mainly manifests as a decrease in cooling capacity and a continuous increase in water temperature.

[0101] Based on the intermittent rise in water temperature caused by engine backflow, the specific Figure 4 As shown, Figure 4 An example diagram of typical high-temperature water backflow fault vehicle characteristics provided in an embodiment of the present application shows a water temperature waveform diagram of intermittent water temperature surges caused by engine water backflow. By utilizing engine big data monitoring parameters, an abnormal water temperature diagnosis strategy is established to identify water backflow faults in advance, provide feedback to the driver for timely processing, and improve engine reliability.

[0102] By applying the solution provided in the present application and utilizing the water temperature and operating condition data of the engine, it is possible to diagnose whether the engine has a high-temperature water return fault, and when a high-temperature water return fault is diagnosed in the vehicle, an early warning is promptly issued to the driver to perform troubleshooting. In the solution provided in the present application, in addition to being able to diagnose the high-temperature water return fault of the vehicle, it is also possible to diagnose the non-high-temperature water return fault of the engine, such as a high water temperature fault caused by a decrease in the cooling capacity of the engine and a continuous increase in the water temperature. The solution provided in the present application can distinguish between high-water temperature return faults and non-return faults, providing a more comprehensive diagnostic solution for diagnosing engine faults and reducing the diagnostic cost of engine high-temperature faults.

[0103] Although the present application depicts operations in a particular order, this should not be understood as requiring that the operations be performed in the particular order shown or in a sequential order.Multitasking and parallel processing may be advantageous under certain circumstances.

[0104] It should be understood that the various steps described in the method embodiments of the present disclosure may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0105] and Figure 1 Correspondingly, the present application also provides an engine high temperature water return diagnostic device, which is used to support Figure 1 A specific implementation of the method described.

[0106] Reference Figure 5 , is a structural example diagram of a high-temperature return water diagnostic device for a motor provided in an embodiment of the present application, and is specifically described as follows:

[0107] The acquisition unit 401 is used to acquire the water temperature and working condition data of the engine in real time;

[0108] The recording unit 402 is used to compare the water temperature with the preset water temperature in real time, and when the water temperature is higher than the preset water temperature, record the duration of the water temperature being higher than the preset water temperature;

[0109] A first determination unit 403 is used to determine whether the engine meets a preset high-temperature return water counting condition by applying the duration and the operating condition data;

[0110] An updating unit 404, configured to update a high temperature return water count value of the engine within a preset time period when the engine meets the high temperature return water count condition;

[0111] The second determination unit 405 is configured to determine that a high temperature return water fault occurs in the engine when the updated high temperature return water count value is higher than a preset value.

[0112] In the device provided in the embodiment of the present application, the water temperature and working condition data of the engine are collected in real time; the water temperature is compared with the preset water temperature in real time, and when the water temperature is higher than the preset water temperature, the duration of the water temperature being higher than the preset water temperature is recorded; the duration and working condition data are used to determine whether the engine meets the preset high-temperature return water counting condition; when the engine meets the high-temperature return water counting condition, the high-temperature return water count value of the engine within the preset time period is updated; when the updated high-temperature return water count value is higher than the preset value, it is determined that the engine has a high-temperature return water fault. During the entire diagnostic process, only the engine's water temperature and working condition data are needed to determine whether the engine has a high-temperature return water fault. Less data is used, and the diagnostic process is simple, which reduces manual participation and effectively reduces the cost required for diagnosis. It can also avoid the deterioration of engine faults and the occurrence of high-risk reliability faults such as cylinder scuffing.

[0113] In another embodiment provided by the present application, the first determination unit executes a process of applying the duration and the operating condition data to determine whether the engine meets a preset high-temperature return water counting condition, including:

[0114] Determine whether the duration is less than a preset first duration;

[0115] When the duration is less than a preset first duration, using the operating condition data to determine whether the engine is in a high-temperature return water condition;

[0116] When the engine is in a high-temperature water return condition, it is determined that the engine meets a preset high-temperature water return counting condition.

[0117] In another embodiment provided by the present application, the first determination unit executes a process of using the operating condition data to determine whether the engine is in a high-temperature return water operating condition, including:

[0118] Acquiring vehicle speed, engine speed and torque from the operating condition data;

[0119] Using the vehicle speed to determine whether the engine is in a normal driving state, whether the engine speed is in a preset speed range, and whether the torque is in a preset torque range;

[0120] When the engine is in a normal driving state, the engine speed is in the preset speed range, and the torque is in the preset torque range, it is determined that the engine is in a high-temperature water return condition.

[0121] In another embodiment provided by the present application, the device further includes:

[0122] A judgment unit is used to judge whether the duration is greater than a preset high temperature duration when the engine does not meet the high temperature return water counting condition; when the duration is greater than the high temperature duration, it is determined that the engine is in an abnormally high water temperature state and an abnormally high water temperature warning is issued.

[0123] In another embodiment provided by the present application, the device further includes:

[0124] The early warning unit is used to issue an early warning of a high-temperature return water fault and provide a troubleshooting strategy for the high-temperature return water fault.

[0125] An embodiment of the present application further provides a storage medium, which includes stored instructions, wherein when the instructions are executed, the device where the storage medium is located is controlled to execute the above-mentioned engine high-temperature water return diagnostic method.

[0126] The present application also provides an electronic device, whose structural diagram is as follows: Figure 6 As shown, it specifically includes a memory 601 and one or more instructions 602, wherein the one or more instructions 602 are stored in the memory 601 and are configured to be executed by one or more processors 603 to perform the following operations:

[0127] Collect engine water temperature and operating condition data in real time;

[0128] Compare the water temperature with the preset water temperature in real time, and when the water temperature is higher than the preset water temperature, record the duration for which the water temperature is higher than the preset water temperature;

[0129] Using the duration and the operating condition data, determining whether the engine meets a preset high-temperature water return counting condition;

[0130] When the engine meets the high-temperature water return counting condition, updating the high-temperature water return counting value of the engine within a preset time period;

[0131] When the updated high-temperature water return count value is higher than a preset value, it is determined that a high-temperature water return fault occurs in the engine.

[0132] It should be noted that the information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards in the relevant regions.

[0133] The specific implementation processes and derivative methods of the above-mentioned embodiments are all within the protection scope of the present invention.

[0134] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0135] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0136] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for diagnosing high-temperature water return in an engine, characterized in that: include: Collect engine water temperature and operating condition data in real time; Compare the water temperature with the preset water temperature in real time, and when the water temperature is higher than the preset water temperature, record the duration for which the water temperature is higher than the preset water temperature; Using the duration and the operating condition data, determining whether the engine meets a preset high-temperature water return counting condition; When the engine meets the high-temperature water return counting condition, updating the high-temperature water return counting value of the engine within a preset time period; When the updated high-temperature water return count value is higher than a preset value, it is determined that a high-temperature water return fault occurs in the engine.

2. The method according to claim 1, characterized in that The applying the duration and the operating condition data to determine whether the engine meets a preset high-temperature return water counting condition includes: Determine whether the duration is less than a preset first duration; When the duration is less than a preset first duration, using the operating condition data to determine whether the engine is in a high-temperature return water condition; When the engine is in a high-temperature water return condition, it is determined that the engine meets a preset high-temperature water return counting condition.

3. The method according to claim 2, characterized in that The using the operating condition data to determine whether the engine is in a high-temperature water return operating condition includes: Acquiring vehicle speed, engine speed and torque from the operating condition data; Using the vehicle speed to determine whether the engine is in a normal driving state, whether the engine speed is in a preset speed range, and whether the torque is in a preset torque range; When the engine is in a normal driving state, the engine speed is in the preset speed range, and the torque is in the preset torque range, it is determined that the engine is in a high-temperature water return condition.

4. The method according to claim 1, characterized in that: When the engine does not meet the high temperature return water counting condition, the method further includes: Determine whether the duration is greater than a preset high temperature duration; When the duration is greater than the high temperature duration, it is determined that the engine is in an abnormally high water temperature state, and an abnormally high water temperature warning is issued.

5. The method according to claim 1, characterized in that Also includes: Issue a warning for high-temperature return water failure and provide a troubleshooting strategy for high-temperature return water failure.

6. An engine high temperature water return diagnostic device, characterized in that: include: A collection unit, used to collect engine water temperature and operating condition data in real time; A recording unit, used to compare the water temperature with a preset water temperature in real time, and when the water temperature is higher than the preset water temperature, record the duration for which the water temperature is higher than the preset water temperature; A first determination unit, configured to determine whether the engine meets a preset high-temperature return water counting condition by applying the duration and the operating condition data; An updating unit, configured to update a high temperature return water count value of the engine within a preset time period when the engine meets the high temperature return water count condition; The second determination unit is used to determine that a high temperature return water fault occurs in the engine when the updated high temperature return water count value is higher than a preset value.

7. The device according to claim 6, characterized in that The first determination unit executes a process of applying the duration and the operating condition data to determine whether the engine meets a preset high-temperature return water counting condition, including: Determine whether the duration is less than a preset first duration; When the duration is less than a preset first duration, using the operating condition data to determine whether the engine is in a high-temperature return water condition; When the engine is in a high-temperature water return condition, it is determined that the engine meets a preset high-temperature water return counting condition.

8. The device according to claim 7, characterized in that The first determination unit executes a process of using the operating condition data to determine whether the engine is in a high-temperature water return operating condition, including: Acquiring vehicle speed, engine speed and torque from the operating condition data; Using the vehicle speed to determine whether the engine is in a normal driving state, whether the engine speed is in a preset speed range, and whether the torque is in a preset torque range; When the engine is in a normal driving state, the engine speed is in the preset speed range, and the torque is in the preset torque range, it is determined that the engine is in a high-temperature water return condition.

9. A storage medium, characterized in that: The storage medium includes stored instructions, wherein when the instructions are executed, the device where the storage medium is located is controlled to execute the engine high-temperature water return diagnosis method according to any one of claims 1 to 5.

10. An electronic device, characterized in that: The system comprises a memory and one or more instructions, wherein the one or more instructions are stored in the memory and configured to be executed by one or more processors to perform the engine high temperature water return diagnosis method as claimed in any one of claims 1 to 5.

Images