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

Abstract

The application provides an engine high-temperature backwater diagnosis method and device, a storage medium and an electronic device, which are applied to the technical field of engine diagnosis and include the following steps: collecting water temperature and working condition data of an engine in real time; comparing the water temperature with a preset water temperature in real time, and recording a duration when the water temperature is higher than the preset water temperature; determining whether the engine meets a preset high-temperature backwater counting condition by using the duration and the working condition data; updating a high-temperature backwater count value of the engine within a preset time period when the engine meets the high-temperature backwater counting condition; and determining that the engine has a high-temperature backwater fault when the updated high-temperature backwater count value is higher than a preset value. In the whole diagnosis process, only the water temperature and the working condition data of the engine are needed to determine whether the engine has the high-temperature backwater fault, the diagnosis process is simple, the degree of manual participation is reduced, and the cost required for diagnosis is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine diagnosis, and in particular relates to an engine high-temperature backwater diagnosis method and device, a storage medium and an electronic device. BACKGROUND

[0002] In the diesel engine industry, supporting express delivery and express delivery type vehicles, the time efficiency requirement is getting higher and higher. The frequent torque limiting and misfire problems caused by high water temperature of the engine bring about functional failure problems of the engine. Therefore, it is necessary to identify and diagnose in advance, and then remind the user to actively maintain, so as to avoid causing greater losses.

[0003] The present application relates to the technical field of engine diagnosis, and in particular relates to an engine high-temperature backwater diagnosis method and device, a storage medium and an electronic device. SUMMARY

[0004] Therefore, the present application provides an engine high-temperature backwater diagnosis method and device, a storage medium and an electronic device. The water temperature and working condition data of the engine are used for diagnosis according to the present application. The diagnosis process does not depend on the experience and technology of the staff, reduces the influence of the experience and technology of the staff on the diagnosis result, makes the diagnosis result consistent, improves the accuracy of the diagnosis result, reduces the participation of the staff, and reduces the diagnosis result.

[0005] To achieve the above object, the embodiments of the present application provide the following technical solutions.

[0006] An engine high-temperature backwater diagnosis method comprises:

[0007] Real-time acquisition of water temperature and working condition data of the engine;

[0008] Real-time comparison of the water temperature with a preset water temperature, and recording the duration that the water temperature is higher than the preset water temperature when the water temperature is higher than the preset water temperature;

[0009] Using the duration and the working condition data to determine whether the engine meets a preset high-temperature backwater counting condition;

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

[0011] When the updated high-temperature backwater count value is higher than a preset value, determining that the engine has a high-temperature backwater fault.

[0012] The method, optionally, comprises the following steps.

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

[0014] using the working condition data to determine whether the engine is in a high-temperature backwater working condition when the duration is less than the preset first duration;

[0015] determining that the engine meets the preset high-temperature backwater counting condition when the engine is in the high-temperature backwater working condition.

[0016] The method, optionally, comprises the following steps.

[0017] obtaining vehicle speed, engine speed and torque in the working condition data;

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

[0019] determining that the engine is in the high-temperature backwater working condition when the engine is in the normal driving state, the engine speed is in the preset speed interval, and the torque is in the preset torque interval.

[0020] The method, optionally, comprises the following steps when the engine does not meet the high-temperature backwater counting condition.

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

[0022] determining that the engine is in an abnormally high water temperature state and issuing an abnormally high water temperature warning when the duration is greater than the high-temperature duration.

[0023] The method, optionally, comprises the following steps.

[0024] issuing a high-temperature backwater fault warning and providing a troubleshooting strategy for the high-temperature backwater fault.

[0025] An engine high-temperature backwater diagnosis device, comprising:

[0026] a collection unit configured to collect water temperature and working condition data of an engine in real time;

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

[0028] The first determining unit is configured to determine whether the engine meets a preset high-temperature backwater counting condition by applying the duration and the working condition data.

[0029] The updating unit is configured to update a high-temperature backwater counting value of the engine in a preset time period when the engine meets the high-temperature backwater counting condition.

[0030] The second determining unit is configured to determine that the engine has a high-temperature backwater fault when the updated high-temperature backwater counting value is higher than a preset value.

[0031] Optionally, the first determining unit performs the process of determining whether the engine meets the preset high-temperature backwater counting condition by applying the duration and the working condition data, and the process includes:

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

[0033] when the duration is less than the preset first duration, determining whether the engine is in a high-temperature backwater working condition by using the working condition data;

[0034] when the engine is in the high-temperature backwater working condition, determining that the engine meets the preset high-temperature backwater counting condition.

[0035] Optionally, the first determining unit performs the process of determining whether the engine is in the high-temperature backwater working condition by using the working condition data, and the process includes:

[0036] obtaining a vehicle speed, an engine speed, and a torque in the working condition data;

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

[0038] when the engine is in the normal driving state, the engine speed is in the preset speed interval, and the torque is in the preset torque interval, determining that the engine is in the high-temperature backwater working condition.

[0039] Optionally, the device further includes:

[0040] the judging unit is configured to determine whether the duration is greater than a preset high-temperature duration when the engine does not meet the high-temperature backwater counting condition, and determine that the engine is in an abnormally high water temperature state and issue an abnormally high water temperature warning when the duration is greater than the high-temperature duration.

[0041] Optionally, the method further includes:

[0042] The early warning unit is used for issuing a high-temperature backwater fault early warning and providing a troubleshooting strategy for the high-temperature backwater fault.

[0043] A storage medium comprises stored instructions, wherein the instructions, when executed, control a device in which the storage medium is located to perform the engine high-temperature backwater diagnosis method as described above.

[0044] An electronic device 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 backwater diagnosis method as described above.

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

[0046] The present application provides an engine high-temperature backwater diagnosis method and device, a storage medium and an electronic device, comprising: collecting water temperature and working condition data of the engine in real time; comparing the water temperature with a preset water temperature in real time, and recording the duration that the water temperature is higher than the preset water temperature when the water temperature is higher than the preset water temperature; applying the duration and the working condition data to determine whether the engine meets a preset high-temperature backwater counting condition; updating the high-temperature backwater count value of the engine within a preset time period when the engine meets the high-temperature backwater counting condition; and determining that the engine has a high-temperature backwater fault when the updated high-temperature backwater count value is higher than a preset value. In the whole diagnosis process, only the water temperature and the working condition data of the engine are needed to determine whether the engine has a high-temperature backwater fault, the data used is less, the diagnosis process is simple, the manual participation is reduced, and the cost required for diagnosis is effectively reduced. And the engine fault can be avoided from worsening, and high-risk reliability faults such as cylinder pulling and piston seizure can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0048] Figure 1 A flowchart of an engine high-temperature backwater diagnosis method provided by the embodiments of the present application;

[0049] Figure 2 A flowchart of applying the duration and the working condition data to determine whether the engine meets a preset high-temperature backwater counting condition provided by the embodiments of the present application;

[0050] Figure 3 An example diagram of a high-temperature fault fishbone diagram provided by the embodiments of the present application;

[0051] Figure 4 An example diagram of typical high-temperature backwater fault vehicle characteristics provided for embodiments of the present application;

[0052] Figure 5 An example diagram of the structure of a high-temperature backwater diagnostic device provided for embodiments of the present application;

[0053] Figure 6 A structural schematic diagram of an electronic device provided for embodiments of the present application. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0055] In the present application, the terms "comprise", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device comprising the element.

[0056] Term explanation:

[0057] High-temperature backwater: the phenomenon of high water temperature (generally defined as water temperature higher than 100℃) of the engine during operation, caused by high-temperature gas (different sources) entering the engine water circulation, usually accompanied by the performance of lack of water in the vehicle expansion tank.

[0058] As known from the background art, the traditional high-temperature backwater fault of the vehicle can only be diagnosed by the staff, and the diagnosis process may require disassembly and inspection of the vehicle. The traditional diagnosis method needs to spend a relatively long time, has low diagnosis efficiency, and has high diagnosis cost.

[0059] In order to solve the above problems, the present application provides an engine high-temperature backwater diagnosis scheme. The present application uses the water temperature and working condition data of the engine for diagnosis, and the diagnosis process does not depend on the experience and technology of the staff, reduces the influence of the experience and technology of the staff on the diagnosis result, makes the diagnosis result consistent, improves the accuracy of the diagnosis result, reduces the participation of artificial, and reduces the diagnosis result.

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

[0061] With reference to Figure 1 A flow chart of an engine high-temperature water return diagnosis method provided by an embodiment of the application is shown in FIG. 1. The specific process is described below with reference to S101-S105.

[0062] S101, real-time collection of water temperature and working condition data of the engine.

[0063] The water temperature and working condition data of the engine are collected in real time from an electronic control unit (ECU) of the vehicle.

[0064] The working condition data of the engine include, but are not limited to, data of vehicle parameters such as engine speed, torque, vehicle speed, etc.

[0065] S102, real-time comparison of the water temperature with a preset water temperature, and recording of a duration for which the water temperature is higher than the preset water temperature when the water temperature is higher than the preset water temperature.

[0066] After the water temperature and working condition data of the engine are collected in real time, the water temperature can be compared with the preset water temperature in real time, so as to record a duration for which the water temperature of the engine is higher than the preset water temperature when the water temperature is higher than the preset water temperature.

[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, and the duration is 1 minute. It can be known that the water temperature in the time period from 9:10 to 9:11 is continuously higher than the preset water temperature.

[0068] Further, since the collected water temperature is compared with the preset water temperature continuously, the water temperature can be higher than the preset water temperature for multiple times in the process of continuous comparison.

[0069] For example, in the process of comparing the water temperature with the preset water temperature in real time in one day, the water temperature at 9:15 is higher than the preset water temperature. Through continuous comparison, the water temperature is higher than the preset water temperature for a duration of 90 seconds. It can be known that the water temperature in the time period from 9:15 to 9:16:30 is continuously higher than the preset water temperature. The water temperature at 14:01 is higher than the preset water temperature. Through continuous comparison, the water temperature is higher than the preset water temperature for a duration of 1 minute. It can be known that the water temperature in the time period 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℃.

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

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

[0073] With reference to Figure 2 The flowchart provided by the embodiments of the present application for applying the duration and the operating condition data to determine whether the engine meets a preset high-temperature water-return counting condition is described as follows:

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

[0075] In the embodiments provided by 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 operating condition, and the specific process of the determination can refer to S202-S203.

[0076] The preset first duration can be set according to actual needs, and 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, obtaining the vehicle speed, the engine speed and the torque in the operating condition data.

[0079] S203, applying the vehicle speed to determine whether the engine is in a normal driving state, determining whether the engine speed is in a preset engine speed interval, and determining whether the torque is in a preset torque interval; when the engine is in the normal driving state, the engine speed is in the preset engine speed interval, and the torque is in the preset torque interval, performing S204; otherwise, performing S206.

[0080] When the vehicle speed is applied to determine whether the engine is in the 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 the normal driving state, and when the vehicle speed is not greater than zero, it is determined that the engine is not in the normal driving state.

[0081] The preset torque interval can be set according to actual needs, and 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 rotating speed interval can be set according to actual needs, and preferably, the preset rotating speed interval is set as an idle speed to a highest empty vehicle rotating speed, in other words, the range of the preset rotating speed interval is between the idle speed and the highest empty vehicle rotating speed.

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

[0084] S204, determining that the engine is in the high-temperature water return working condition.

[0085] S205, determining that the engine meets the preset high-temperature water return counting condition.

[0086] Preferably, when it is determined that the engine meets the preset high-temperature water return technical condition, it can be determined that the engine appears the intermittent high water temperature caused by the high-temperature gas, and when the engine frequently appears this situation, the engine will appear the high-temperature water return fault.

[0087] S206, determining that the engine does not meet the preset high-temperature water return counting condition.

[0088] In the method provided by the embodiment of the application, the water temperature and working 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 condition, when the engine meets the high-temperature water return counting condition, the engine appears the intermittent high water temperature caused by the high-temperature gas, and the application can quickly determine whether the engine appears the intermittent high water temperature caused by the high-temperature gas by using only the water temperature and working condition data of the engine, the process of judgment reduces the degree of human participation and the cost required in the process of judgment.

[0089] S104, when the engine meets the high-temperature water return counting condition, updating the high-temperature water return counting value of the engine in a preset time period.

[0090] Preferably, when the engine meets the high-temperature water return technical condition, the high-temperature water return counting value of the engine in 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 taken as a preset time period, and specifically, the current preset time period is the current day.

[0092] S105, when the updated high-temperature water return counting value is higher than a preset value, determining that the engine appears the high-temperature water return fault.

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

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

[0095] Preferably, when it is determined that the engine has a high-temperature backflow fault, a high-temperature backflow fault warning is issued, and a troubleshooting strategy for the high-temperature backflow fault is provided.

[0096] The way of issuing the high-temperature backflow fault warning can be displaying a red light on the display, thereby reminding the vehicle driver to actively report for maintenance service. Preferably, the troubleshooting strategy includes but is not limited to checking air leakage of the air compressor and air leakage of the cylinder head gasket.

[0097] In the method provided by the embodiment of the application, the water temperature and the working condition data of the engine are collected in real time; the water temperature is compared with a preset water temperature in real time, and when the water temperature is higher than the preset water temperature, the duration for which the water temperature is higher than the preset water temperature is recorded; the duration and the working condition data are used to determine whether the engine meets a preset high-temperature backflow count condition; when the engine meets the high-temperature backflow count condition, the high-temperature backflow count value of the engine in a preset time period is updated; and when the updated high-temperature backflow count value is higher than a preset value, it is determined that the engine has a high-temperature backflow fault. In the entire diagnosis process, only the water temperature and the working condition data of the engine are needed to determine whether the engine has a high-temperature backflow fault, the data used is less, the diagnosis process is simple, the degree of human participation is reduced, and the cost required for diagnosis is effectively reduced. Moreover, engine fault deterioration, such as high-risk reliability fault of cylinder pulling, can be avoided.

[0098] In the method provided by the embodiment of the application, when the engine does not meet the high-temperature backflow count condition, it is determined 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; further, when the duration is greater than the high-temperature duration, it is determined that the engine has a continuous high temperature and the cooling capacity is reduced, which is different from the intermittent high water temperature caused by high-temperature gas. This situation belongs to the high water temperature caused by problems such as insufficient cooling of the heat exchanger, poor heat dissipation of the fan, abnormal working condition operation of the engine, full-load climbing, water leakage of the water path, and water shortage of the water tank, and the display is bright purple, reminding 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, and there are many factors that cause the high water temperature, such as Figure 3As shown, an example diagram of a high water temperature fault fishbone diagram provided by the embodiment of the present application is shown. 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 air leakage of the air compressor will cause the engine to return water. The high temperature and high pressure gas in the engine cylinder or the air compressor cylinder leaks into the water cavity, causing the water temperature to intermittently rise, and the duration of a single high water temperature is short. If the engine continues to run for a long time, the water return fault will worsen, and the air return 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 is squeezed out of the expansion water tank, causing the engine to lack water.

[0100] The engine non-return water fault, the insufficient cooling of the heat exchanger, the poor heat dissipation of the fan, the abnormal operating condition of the engine, the full load climbing, the air leakage of the EGR valve, etc. The high water temperature caused by the above factors mainly shows that the cooling capacity decreases and the water temperature continues to rise.

[0101] Based on the intermittent high water temperature caused by the engine return water, as shown in Figure 4 Figure 4 An example diagram of typical high temperature return water fault vehicle characteristics provided by the embodiment of the present application is shown. The diagram shows the water temperature waveform diagram of the engine return water causing the water temperature to intermittently rise. Using the engine water temperature and operating condition data, the engine high temperature return water fault is diagnosed, and when the vehicle appears high temperature return water fault, the driver is warned in time for fault troubleshooting. In the scheme provided by the present application, in addition to diagnosing the high temperature return water fault of the vehicle, the non-high temperature return water fault of the engine can also be diagnosed, such as the high water temperature fault caused by the decrease of the cooling capacity of the engine and the continuous rise of the water temperature. The scheme provided by the present application can distinguish the high water temperature return water fault and the non-return water fault, and provide a more comprehensive diagnosis scheme for diagnosing the engine fault, and reduce the diagnosis cost of the engine high temperature fault.

[0102] By using the engine water temperature and operating condition data, the scheme provided by the present application can diagnose whether the engine has a high temperature return water fault, and can diagnose the high temperature return water fault of the vehicle when the vehicle appears a high temperature return water fault, and can warn the driver in time for fault troubleshooting. In the scheme provided by the present application, in addition to diagnosing the high temperature return water fault of the vehicle, the non-high temperature return water fault of the engine can also be diagnosed, such as the high water temperature fault caused by the decrease of the cooling capacity of the engine and the continuous rise of the water temperature. The scheme provided by the present application can distinguish the high water temperature return water fault and the non-return water fault, and provide a more comprehensive diagnosis scheme for diagnosing the engine fault, and reduce the diagnosis cost of the engine high temperature fault.

[0103] Although the present application describes each operation in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. In certain circumstances, multi-tasking and parallel processing can be advantageous.

[0104] It should be understood that each step described in the method embodiment of the present disclosure can be performed in a different order and / or in parallel. In addition, the method embodiment can include additional steps and / or omit the execution of the steps shown. The scope of the present disclosure is not limited in this respect.

[0105] With Figure 1 ​Correspondingly, the application also provides an engine high-temperature water return diagnosis device, which is used for supporting Figure 1 The specific implementation of the method.

[0106] Referring to Figure 5 A structure example of an engine high-temperature water return diagnosis device provided by the embodiment of the application is shown in the figure, and the specific description is as follows:

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

[0108] The recording unit 402 is configured to compare the water temperature with a preset water temperature in real time, and record the duration that the water temperature is higher than the preset water temperature when the water temperature is higher than the preset water temperature.

[0109] The first determination unit 403 is configured to determine whether the engine meets a preset high-temperature water return counting condition by using the duration and the working condition data.

[0110] The updating unit 404 is configured to update the high-temperature water return counting value of the engine in a preset time period when the engine meets the high-temperature water return counting condition.

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

[0112] In the device provided by the embodiment of the application, the water temperature and the working condition data of the engine are acquired in real time, the water temperature is compared with a preset water temperature in real time, and the duration that the water temperature is higher than the preset water temperature is recorded when the water temperature is higher than the preset water temperature. The duration and the working condition data are used to determine whether the engine meets a preset high-temperature water return counting condition. When the engine meets the high-temperature water return counting condition, the high-temperature water return counting value of the engine in a preset time period is updated. When the updated high-temperature water return counting value is higher than a preset value, it is determined that the engine has a high-temperature water return fault. In the whole diagnosis process, only the water temperature and the working condition data of the engine are needed to determine whether the engine has a high-temperature water return fault, the data used is less, the diagnosis process is simple, the manual participation degree is reduced, the cost required for diagnosis is effectively reduced. And the engine fault can be avoided from worsening, and high-risk reliability faults such as cylinder pulling and piston seizure can be avoided.

[0113] In another embodiment provided by the application, the first determination unit performs the process of determining whether the engine meets a preset high-temperature water return counting condition by using the duration and the working condition data, which includes:

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

[0115] when the duration is less than a preset first duration, determining whether the engine is in a high-temperature backwater condition using the working condition data;

[0116] when the engine is in the high-temperature backwater condition, determining that the engine satisfies a preset high-temperature backwater counting condition.

[0117] In another embodiment provided by the application, the first determining unit performs the process of determining whether the engine is in the high-temperature backwater condition using the working condition data, including:

[0118] obtaining vehicle speed, engine speed and torque in the working condition data;

[0119] determining whether the engine is in a normal driving state using the vehicle speed, determining whether the engine speed is in a preset speed interval, and determining whether the torque is in a preset torque interval;

[0120] when the engine is in the normal driving state, the engine speed is in the preset speed interval, and the torque is in the preset torque interval, determining that the engine is in the high-temperature backwater condition.

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

[0122] the determining unit is configured to determine whether the duration is greater than a preset high-temperature duration when the engine does not satisfy the high-temperature backwater counting condition, and determine that the engine is in an abnormal high-temperature state and issue an abnormal high-temperature early warning when the duration is greater than the high-temperature duration.

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

[0124] the early warning unit is configured to issue a high-temperature backwater fault early warning and provide a troubleshooting strategy for the high-temperature backwater fault.

[0125] Embodiments of the application also provide a storage medium including stored instructions, wherein when the instructions are executed, the device where the storage medium is located performs the engine high-temperature backwater diagnosis method.

[0126] Embodiments of the application also provide an electronic device, a structural schematic diagram of which is shown in Figure 6 and 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 configured to be executed by one or more processors 603 to perform the following operations:

[0127] real-time collection of water temperature and working condition data of the engine;

[0128] real-time compare the water temperature with a preset water temperature, and when the water temperature is higher than the preset water temperature, record a duration that the water temperature is higher than the preset water temperature;

[0129] apply the duration and the working condition data to determine whether the engine meets a preset high-temperature water return counting condition;

[0130] when the engine meets the high-temperature water return counting condition, update a high-temperature water return counting value of the engine in a preset time period;

[0131] when the updated high-temperature water return counting value is higher than a preset value, determine that the engine has a high-temperature water return fault.

[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 for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards in relevant regions.

[0133] The specific implementation process of each of the above embodiments and its derivative mode are all within the protection scope of the present application.

[0134] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between each of the embodiments can be referred to each other, and each of the embodiments mainly describes the difference from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, it is described more simply, and the related parts can be referred to the part of the method embodiment. The above described system and system embodiment are only illustrative, and the units described as separate components can be or can not be physically separated, and the components displayed as units can be or can not be physical units, that is, they can be located in one place, or can be distributed on multiple network units. According to the actual needs, part or all of the modules can be selected to achieve the purpose of the embodiment scheme. Those skilled in the art can understand and implement without creative labor.

[0135] Those skilled in the art will further realize that the mechanisms of the various examples described herein are capable of being implemented using any number of combinations of the described features. Accordingly, these examples are not limited to the mechanisms described herein, but rather, the intent is to cover all modifications and alternatives equivalent thereto. The preceding description of the examples is illustrative, and not restrictive. Many other examples will be apparent to those of skill in the art upon reviewing the above description. The scope of the examples should, therefore, be determined not with reference to the above description, but instead should be given to the appended claims, along with their full scope of equivalents.

[0136] The above description of disclosed examples is intended to be illustrative, and not restrictive. Many other examples will be apparent to those of skill in the art upon reviewing the above description. The scope of the examples should, therefore, be determined not with reference to the above description, but instead should be given to the appended claims, along with their full scope of equivalents.

Claims

1. An engine high-temperature return water diagnosis method characterized by comprising: The method comprises: collecting water temperature and working condition data of the engine in real time; comparing the water temperature with a preset water temperature in real time, and recording a duration that the water temperature is higher than the preset water temperature when the water temperature is higher than the preset water temperature; applying the duration and the working condition data to determine whether the engine meets a preset high-temperature water return counting condition; updating a high-temperature water return counting value of the engine within a preset time period when the engine meets the high-temperature water return counting condition; determining that the engine has a high-temperature water return fault when the updated high-temperature water return counting value is higher than a preset value; wherein the applying the duration and the working condition data to determine whether the engine meets the preset high-temperature water return counting condition comprises: determining whether the duration is less than a preset first duration; when the duration is less than the preset first duration, determining whether the engine is in a high-temperature water return working condition by using the working condition data; and when the engine is in the high-temperature water return working condition, determining that the engine meets the preset high-temperature water return counting condition; wherein the determining whether the engine is in the high-temperature water return working condition by using the working condition data comprises: obtaining vehicle speed, engine speed and torque in the working condition data; determining whether the engine is in a normal driving state by using the vehicle speed, determining whether the engine speed is in a preset speed interval, and determining whether the torque is in a preset torque interval; and when the engine is in the normal driving state, the engine speed is in the preset speed interval, and the torque is in the preset torque interval, determining that the engine is in the high-temperature water return working condition.

2. The method of claim 1, wherein, when the engine does not meet the high-temperature water return counting condition, further comprising: determining whether the duration is greater than a preset high-temperature duration; when the duration is greater than the high-temperature duration, determining that the engine is in an abnormally high water temperature state, and issuing an abnormally high water temperature warning.

3. The method of claim 1, wherein, further comprising: issuing a high-temperature water return fault warning, and providing troubleshooting strategies for the high-temperature water return fault.

4. An engine high-temperature return water diagnostic device characterized by comprising: The method comprises: a collecting unit configured to collect water temperature and working condition data of the engine in real time; a recording unit configured to compare the water temperature with a preset water temperature in real time, and record a duration that the water temperature is higher than the preset water temperature when the water temperature is higher than the preset water temperature; a first determining unit configured to apply the duration and the working condition data to determine whether the engine meets a preset high-temperature water return counting condition; an updating unit configured to update a high-temperature water return counting value of the engine within a preset time period when the engine meets the high-temperature water return counting condition; a second determining unit configured to determine that the engine has a high-temperature water return fault when the updated high-temperature water return counting value is higher than a preset value; wherein the first determining unit performs a process of applying the duration and the working condition data to determine whether the engine meets the preset high-temperature water return counting condition, comprising: determining whether the engine is in a high-temperature backflow condition using the working condition data when the duration is less than the first preset duration; The first determining unit performs the process of determining whether the engine is in a high-temperature backflow condition using the working condition data, including: obtaining vehicle speed, engine speed and torque in the working condition data; determining whether the engine is in a normal driving state using the vehicle speed, determining whether the engine speed is in a preset speed interval, and determining whether the torque is in a preset torque interval; and determining that the engine is in a high-temperature backflow condition when the engine is in the normal driving state, the engine speed is in the preset speed interval, and the torque is in the preset torque interval.

5. A storage medium, characterized by The storage medium includes stored instructions, wherein the instructions, when executed, control a device in which the storage medium is located to perform the engine high-temperature backflow diagnosis method of any one of claims 1-3.

6. An electronic device, comprising: The storage medium 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 engine high-temperature backflow diagnosis method of any one of claims 1-3.

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