Method, device, computer-readable storage medium, and vehicle for monitoring engine oil dilution rate

Abstract

The present invention provides a method for monitoring engine oil dilution rate, comprising: obtaining a current coolant temperature and engine speed variation parameter of a vehicle engine; and determining a first engine oil dilution rate for the vehicle using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model; the dilution rate model is configured to reflect the relationship between the engine coolant temperature, the engine speed variation parameter, and the engine oil dilution rate. This method allows for real-time monitoring of the engine oil dilution rate, providing timely insight into the oil dilution status, enabling timely implementation of oil dilution adjustments to ensure oil quality and minimize the risk of engine damage.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a method and device for monitoring oil dilution rate, a computer-readable storage medium, and a vehicle. Background Art

[0002] When an engine operates at low water temperatures (≤70°C) for extended periods, gasoline mixed into the engine oil becomes less volatile, resulting in a decrease in oil concentration. This phenomenon is known as oil dilution. Furthermore, the application of direct injection (which facilitates gasoline wall wetting) and mixing technologies (which result in shorter engine operating times and slower water temperature rise) exacerbates the oil dilution problem.

[0003] Dilution of the engine oil will cause the oil dipstick level to increase, and an excessively high oil dilution rate can easily cause damage to the engine, such as reducing engine life, reducing fuel economy, and reducing power, which can damage the engine. Summary of the Invention

[0004] In view of this, the present invention aims to propose a method, device, computer-readable storage medium and vehicle for monitoring the oil dilution rate, so as to achieve real-time monitoring of the oil dilution rate, timely understand the oil dilution situation, and reduce the chance of engine damage.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A first aspect of an embodiment of the present application provides a method for monitoring an engine oil dilution rate, characterized in that the method comprises:

[0007] Obtain the current coolant temperature and engine speed change parameters of the vehicle's engine;

[0008] Determining a first engine oil dilution rate for the vehicle using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model; the dilution rate model is used to reflect the relationship between the engine coolant temperature, the engine speed variation parameter, and the engine oil dilution rate;

[0009] Optionally, the current engine speed change parameter of the engine includes a speed change duration of the preset operating condition; and determining the first engine oil dilution rate of the vehicle by using the coolant temperature, the engine speed change parameter, and a preset dilution rate model includes:

[0010] The first oil dilution rate of the vehicle is determined using the coolant temperature, the speed change duration and a preset dilution rate model; the dilution rate model is used to reflect the relationship between the engine coolant temperature, the speed change duration and the oil dilution rate.

[0011] Optionally, the dilution rate model is used to record the speed change duration under preset operating conditions at different coolant temperatures and oil dilution rates; and determining the first oil dilution rate of the vehicle using the coolant temperature, the speed change duration, and the preset dilution rate model includes:

[0012] A first engine oil dilution rate of the vehicle is determined from the dilution rate model according to the coolant temperature and the speed change duration.

[0013] Optionally, before determining the first engine oil dilution rate of the vehicle by using the coolant temperature, the speed change duration, and a preset dilution rate model, the method further includes:

[0014] Acquire an engine oil sample set and a coolant sample set, wherein the engine oil sample set includes engine oil samples at at least two dilution rates, and the coolant sample set includes coolant samples at at least two temperatures;

[0015] Testing the engine of the vehicle based on the oil sample set and the coolant sample set, and recording test data; the test data includes the speed change duration of a preset operating condition corresponding to each set of dilution rate and coolant temperature;

[0016] A dilution rate model is constructed based on the test data.

[0017] Optionally, the preset operating condition includes any one of the following:

[0018] The engine starting process;

[0019] The engine shutoff process;

[0020] The acceleration or deceleration process of the vehicle.

[0021] Optionally, the starting process includes a process in which the engine changes from starting to idling; and the shutoff process includes a process in which the engine changes from idling to shutting down.

[0022] Optionally, the current engine speed variation parameter of the engine includes a current drag torque of the engine; and determining the first engine oil dilution rate of the vehicle by using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model includes:

[0023] The first oil dilution rate of the vehicle is determined using the coolant temperature, the drag torque and a preset dilution rate model; the dilution rate model is used to reflect the relationship between the coolant temperature, the drag torque and the oil dilution rate of the engine.

[0024] A second aspect of an embodiment of the present application provides a device for monitoring an engine oil dilution rate, the device comprising:

[0025] A data acquisition module is used to obtain the current coolant temperature and engine speed change parameters of the vehicle's engine;

[0026] a calculation module, configured to determine a first engine oil dilution rate for the vehicle using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model; the dilution rate model being configured to reflect a relationship between the engine coolant temperature, the engine speed variation parameter, and the engine oil dilution rate;

[0027] A third aspect of an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the above-mentioned method for monitoring the oil dilution rate is implemented.

[0028] A fourth aspect of the embodiment of the present application provides a vehicle, comprising an oil dilution rate monitoring device as described above, to implement the above-mentioned oil dilution rate monitoring method.

[0029] Compared with the prior art, the oil dilution rate monitoring method of the present invention has the following advantages:

[0030] An embodiment of the present invention provides a method for monitoring the engine oil dilution rate. After obtaining a vehicle's current engine coolant temperature and engine speed variation parameters, the method utilizes these coolant temperature, engine speed variation parameters, and a pre-set dilution rate model to determine a first engine oil dilution rate for the vehicle. This method allows for real-time monitoring of the engine oil dilution rate, providing timely insight into the oil dilution status and enabling timely action to adjust the oil dilution, thereby ensuring oil quality and minimizing the risk of engine damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 This is a flow chart of an embodiment of a method for monitoring engine oil dilution rate according to the present invention;

[0033] Figure 2 This is a relationship diagram between the resistance torque and the dilution rate according to an embodiment of the present invention;

[0034] Figure 3 This is an engine speed variation diagram according to an embodiment of the present invention;

[0035] Figure 4 Another engine speed variation diagram according to an embodiment of the present invention;

[0036] Figure 5This is a structural diagram of an embodiment of a device for monitoring engine oil dilution rate according to the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] The vehicle controller, or powertrain controller, is the core control unit of the entire vehicle system. It is primarily responsible for collecting signals from various vehicle components, such as the accelerator pedal, brake pedal, and other components. It then makes decisions based on these signals and controls the underlying component controllers, such as the engine controller and electric power steering system, to execute corresponding actions. The vehicle controller primarily includes the hybrid system vehicle controller (HCU) and the new energy vehicle controller (VCU).

[0040] The engine control unit (ECU) is mainly responsible for continuously monitoring and controlling the normal operation of the engine.

[0041] Reference Figure 1 , shows a flow chart of an embodiment of a method for monitoring an engine oil dilution rate according to the present invention, the method comprising:

[0042] 101. Obtain the current coolant temperature and engine speed change parameters of the vehicle engine;

[0043] 102. Determine a first engine oil dilution rate for the vehicle using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model; the dilution rate model is used to reflect the relationship between the engine coolant temperature, the engine speed variation parameter, and the engine oil dilution rate.

[0044] Among them, the engine speed change parameter refers to a parameter that characterizes the change in engine speed, such as the engine resistance torque that affects the engine speed acceleration, the engine speed change duration under different working conditions, etc.

[0045] It's understandable that as the oil dilution rate increases, the oil's viscosity gradually decreases, reducing the resistance experienced by the engine. This, in turn, affects the acceleration of the engine speed and the duration of the corresponding speed change. Therefore, the oil dilution rate can be determined based on the aforementioned engine speed variation parameters. Furthermore, the viscosity of oil varies at different temperatures. Specifically, as the temperature increases, the oil viscosity decreases; as the temperature decreases, the oil viscosity increases. Therefore, coolant temperature can also serve as an important factor in reflecting and measuring the oil dilution rate.

[0046] The dilution rate model is constructed based on different engine coolant temperatures, engine speed variation parameters, and oil dilution rates, and is used to reflect the relationship between the engine coolant temperature, engine speed variation parameters, and oil dilution rate. Specifically, the dilution rate model can be a neural network model trained based on three data samples. The current engine coolant temperature and engine speed variation parameters obtained in step 101 are input into the dilution rate model, and the dilution rate model outputs the vehicle's current dilution rate. The dilution rate model can also be a model that records the speed variation duration under different coolant temperatures and oil dilution rates. For example, if the dilution rate model is set in an engine control unit (ECU), the ECU can determine the dilution rate corresponding to the current engine coolant temperature and engine speed variation parameters from the dilution rate model, i.e., the first oil dilution rate. Of course, the present invention does not limit the specific implementation of the dilution rate model, and it can be adjusted according to actual conditions.

[0047] In an embodiment of the present invention, after obtaining the current coolant temperature and engine speed variation parameters of a vehicle's engine, a preset dilution rate model is used to determine the current engine oil dilution rate, i.e., the first oil dilution rate. By monitoring the oil dilution rate in real time, the oil dilution status can be promptly understood, allowing timely measures to adjust the oil dilution, ensuring oil quality and reducing the risk of engine damage. Furthermore, the oil dilution rate monitoring method described in this embodiment of the present invention can be executed by a vehicle's own oil dilution rate monitoring network, such as an engine controller or vehicle controller, or by an external device or network, and this application is not limited thereto.

[0048] Optionally, the current engine speed variation parameter of the engine includes a speed variation duration of the preset operating condition; and determining the first engine oil dilution rate of the vehicle using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model in step 102 includes:

[0049] S11. Determine a first engine oil dilution rate for the vehicle using the coolant temperature, the speed change duration, and a preset dilution rate model; the dilution rate model is used to reflect the relationship between the engine coolant temperature, the speed change duration, and the engine oil dilution rate.

[0050] Reference Figure 2 A diagram showing the relationship between drag torque and dilution rate in accordance with an embodiment of the present invention is shown. The diagram illustrates the change in drag torque versus dilution rate at a specific speed, where T1-T4 represent different engine coolant temperatures. Different engine drag torques affect the acceleration of engine speed changes, and thus the duration of engine speed changes. Therefore, the duration of engine speed changes can be used to infer different drag torques and, therefore, determine the oil dilution rate.

[0051] The speed change duration of a preset operating condition refers to the time required for the engine to change from speed A to speed B under specific vehicle operating conditions, for example, the time required for the engine to change from starting to idling, or the time required for the engine to change from idling to shutting down. The preset operating condition can be preset based on the actual vehicle conditions and is not limited in the present invention.

[0052] As an example, refer to Figure 3 The engine speed change diagram of the embodiment of the present invention is shown, which shows the time change curve of the engine speed from starting to idling under different dilution rates, wherein t1-tn represents the time required for the engine speed to change from starting to idling under different dilution rates. Figure 3 It can be seen that the acceleration of the engine speed remains constant during the process of engine start-up to idle speed. Therefore, after obtaining the duration of the engine speed change from start-up to idle speed, the engine acceleration can be determined, and then the corresponding drag torque can be determined. Based on the obtained engine coolant temperature, combined with the relationship between oil dilution rate, drag torque, and coolant temperature, the engine dilution rate can be determined.

[0053] As another example, refer to Figure 4 Another engine speed variation diagram of the embodiment of the present invention is shown, which shows the time variation curve of the engine speed from idle to off under different dilution rates. t1-tn represents the time required for the engine speed to change from start to idle under different dilution rates. Figure 4 It can be seen that the acceleration of the engine speed remains constant during the process of the engine going from idle to start. Similarly, after determining the engine speed acceleration and thus the engine drag torque, the engine dilution rate can be determined by combining the relationship between the oil dilution rate, drag torque, and coolant temperature.

[0054] In addition to the aforementioned vehicle operating conditions where the engine speed acceleration remains constant, in situations where the engine speed acceleration varies, such as during gear shifting and acceleration, the drag torque can also be inferred from the duration of the speed change to determine the oil dilution rate. Of course, as factors influencing engine speed increase during vehicle operation, such as wind resistance and body friction, the proportion of engine drag torque to engine speed acceleration decreases accordingly. Therefore, when inferring engine drag torque based on acceleration, it is necessary to simultaneously consider multiple factors influencing engine speed, and then determine the engine drag torque and, therefore, the oil dilution rate.

[0055] Based on the above, it can be seen that the engine dilution rate can be determined based on the speed variation duration and the engine coolant temperature. Therefore, a dilution rate model can be constructed based on different engine coolant temperatures, the speed variation duration under preset operating conditions, and the oil dilution rate, used to reflect the relationship between the engine coolant temperature, speed variation duration, and oil dilution rate. Specifically, the dilution rate model can be a neural network model trained based on three data samples, or it can be a model that records the speed variation duration under different coolant temperatures and oil dilution rates, although this is not limited by the present invention. After determining the current engine coolant temperature and the speed variation duration under preset operating conditions, the dilution rate model can be used to determine the vehicle's oil dilution rate, thereby enabling real-time monitoring of the oil dilution rate.

[0056] Optionally, in step S11, the dilution rate model is used to record the speed change duration of a preset operating condition under different coolant temperatures and oil dilution rates; and determining the first oil dilution rate of the vehicle using the coolant temperature, the speed change duration, and the preset dilution rate model includes:

[0057] S12. Determine a first engine oil dilution rate for the vehicle from the dilution rate model according to the coolant temperature and the speed change duration.

[0058] The dilution rate model can be used to record the duration of engine speed variations under preset operating conditions at different coolant temperatures and oil dilution rates. After obtaining the current engine coolant and the duration of engine speed variations under the preset operating conditions, the corresponding oil dilution rate (i.e., the first oil dilution rate) can be determined from the dilution rate model based on these two data points.

[0059] Taking the process of a vehicle changing from start to idle as an example, refer to the speed change duration map shown in Table 1, which shows the speed change duration required for the vehicle to change from start to idle under different coolant temperatures and oil dilution rates. Among them, N represents a positive integer, dN is used to represent different oil dilution rates, and tN is used to represent the speed change duration. For example, under the conditions of oil with a dilution rate of d1 and a temperature of -35 degrees Celsius, the speed change duration required for the vehicle to change from start to idle is t1. This dilution rate model, i.e., the speed change duration map, is imported into the vehicle's engine controller. After obtaining the coolant temperature and the speed change duration of the vehicle from start to idle, the vehicle's oil dilution rate can be obtained by looking up the table.

[0060] Table 1

[0061]

[0062] In the embodiment of the present invention, the oil dilution rate can be quickly determined by the method shown in Table 1, thereby improving the efficiency of obtaining the oil dilution rate, thereby reducing the vehicle's reaction time when the oil dilution rate is too high and protecting the engine.

[0063] Optionally, before determining the first engine oil dilution rate of the vehicle by using the coolant temperature, the speed change duration, and a preset dilution rate model in step S11, the method may further include:

[0064] S31. Acquire an engine oil sample set and a coolant sample set, wherein the engine oil sample set includes engine oil samples of at least two dilution rates, and the coolant sample set includes coolant samples of at least two temperatures;

[0065] S32. Testing the engine of the vehicle based on the engine oil sample set and the coolant sample set, and recording test data; the test data includes the speed change duration of the preset operating conditions corresponding to each set of dilution rate and coolant temperature;

[0066] S33. Building a dilution rate model based on the test data.

[0067] When building a dilution rate model, you can select engine oils with different dilution rates d1-dn, where d1 is 0 and dn is the upper limit of the dilution rate test. Test the speed change time of preset working conditions under different coolant temperatures, and then build a dilution rate model based on the test data.

[0068] Optionally, the preset working condition may include any of the following:

[0069] The engine starting process;

[0070] The engine shutoff process;

[0071] The acceleration or deceleration process of the vehicle.

[0072] The engine startup process refers to the process from engine startup to engine speed stabilization and engine preheating, including but not limited to the engine startup to idle speed change and engine preheating process. The engine shutdown process includes but is not limited to the engine idle speed to shutdown process and engine cooling process. The vehicle acceleration or deceleration process includes but is not limited to the driver's acceleration by pressing the accelerator, deceleration by braking, and gear shifting.

[0073] During vehicle acceleration or deceleration, the acceleration of engine speed changes. Furthermore, as the vehicle is in motion, factors influencing engine speed increase, such as wind resistance and vehicle body friction. In this case, the contribution of engine drag torque to engine speed acceleration decreases accordingly. Therefore, when inferring engine drag torque based on acceleration during vehicle acceleration or deceleration, it is necessary to simultaneously consider multiple factors influencing engine speed, then determine the engine drag torque and, therefore, the oil dilution rate.

[0074] Compared to the speed change duration during the vehicle's acceleration or deceleration process, the frequency of acceleration changes during engine startup and shutdown is smaller. Therefore, it is easier to determine the relationship between acceleration and change duration based on the speed change duration during startup or shutdown. This helps improve the calculation efficiency of the oil dilution rate, reduce the vehicle's reaction time when the oil dilution rate is too high, and protect the engine.

[0075] Optionally, the starting process includes a process in which the engine changes from starting to idling; and the shutoff process includes a process in which the engine changes from idling to shutting down.

[0076] Depend on Figure 3 and Figure 4 It can be seen that the acceleration of the engine speed remains constant from engine start to idle; and the acceleration of the engine speed also remains constant from idle to start. Since the engine drag torque directly affects the acceleration of the engine speed, the engine drag torque can be directly inferred from the acceleration of the engine speed when the acceleration remains constant. The engine dilution rate can then be determined by using the relationship between the oil dilution rate, drag torque, and coolant temperature.

[0077] As can be seen above, compared to other vehicle operating conditions, the engine speed change duration and engine cooling temperature during the engine start-up to idle or idle-to-shutdown process can be directly used to construct the dilution rate model. Furthermore, this model construction eliminates the need for complex intermediate calculations and the introduction of additional variables, resulting in a relatively low model complexity. This helps improve computational efficiency during the oil dilution rate calculation process, reduces vehicle reaction time when the oil dilution rate is too high, and protects the engine.

[0078] Optionally, the current engine speed variation parameter of the engine includes the current drag torque of the engine; and determining the first engine oil dilution rate of the vehicle using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model in step 102 may include:

[0079] S41. Determine a first engine oil dilution rate for the vehicle using the coolant temperature, the drag torque, and a preset dilution rate model; the dilution rate model is used to reflect the relationship among the engine's coolant temperature, drag torque, and engine oil dilution rate.

[0080] Depend on Figure 2 It can be seen that the dilution rate model can be constructed based on different engine coolant temperatures, engine drag torque, and oil dilution rates, and is used to reflect the relationship between the engine coolant temperature, drag torque, and oil dilution rate. Specifically, the dilution rate model can be a neural network model trained based on three data samples, or it can be a model that records drag torque at different coolant temperatures and oil dilution rates, although this is not limited to the present invention. Therefore, after determining the current engine drag torque and coolant temperature, the dilution rate model can be used to determine the vehicle's oil dilution rate.

[0081] Engine drag torque comprises various torques resulting from various resistance forces acting on the engine, such as reciprocating inertia torque, pumping drag torque, and friction drag torque. Factors influencing drag torque include, but are not limited to, crankshaft angle, engine speed, throttle opening, and engine water temperature. Within the vehicle's communication network, data on various factors influencing drag torque can be acquired via sensors. Therefore, in addition to inferring drag torque calculations based on engine speed acceleration, the vehicle's current drag torque can also be calculated by calculating the current data for each influencing factor. This can then be used to determine the vehicle's current dilution rate, or the first oil dilution rate, based on a pre-established dilution rate model.

[0082] In summary, embodiments of the present invention provide a method for monitoring the engine oil dilution rate. After obtaining a vehicle's current engine coolant temperature and engine speed variation parameters, the method utilizes these coolant temperature, engine speed variation parameters, and a pre-set dilution rate model to determine a first engine oil dilution rate for the vehicle. This method allows for real-time monitoring of the engine oil dilution rate, providing timely insight into the oil dilution status and enabling timely action to adjust the oil dilution, thereby ensuring oil quality and minimizing the risk of engine damage.

[0083] Reference Figure 5 , shows a structural diagram of an embodiment of a device for monitoring the oil dilution rate of the present invention, wherein the device 200 may include:

[0084] The data acquisition module 201 is used to obtain the current coolant temperature and engine speed change parameters of the vehicle engine;

[0085] The calculation module 202 is configured to determine a first oil dilution rate for the vehicle using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model; the dilution rate model is configured to reflect the relationship between the engine coolant temperature, the engine speed variation parameter, and the oil dilution rate.

[0086] Optionally, the current engine speed change parameter of the engine includes the speed change duration of the preset working condition; the dilution rate calculation module may include:

[0087] The first calculation submodule is configured to determine a first engine oil dilution rate for the vehicle using the coolant temperature, the speed change duration, and a preset dilution rate model; the dilution rate model is configured to reflect a relationship between the engine coolant temperature, the speed change duration, and the engine oil dilution rate.

[0088] Optionally, the dilution rate model is used to record the speed change duration of preset operating conditions under different coolant temperatures and oil dilution rates; the dilution rate first calculation submodule includes:

[0089] The second calculation submodule is configured to determine a first engine oil dilution rate of the vehicle from the dilution rate model according to the coolant temperature and the speed change duration.

[0090] Optionally, the device may further include:

[0091] a sample acquisition module, configured to acquire an engine oil sample set and a coolant sample set before determining the first engine oil dilution rate of the vehicle using the coolant temperature, the speed change duration, and a preset dilution rate model, wherein the engine oil sample set includes engine oil samples of at least two dilution rates, and the coolant sample set includes coolant samples of at least two temperatures;

[0092] a testing module for testing the engine of the vehicle based on the oil sample set and the coolant sample set, and recording test data; the test data including the speed change duration of the preset operating conditions corresponding to each set of dilution rate and coolant temperature;

[0093] A model building module is used to build a dilution rate model based on the test data.

[0094] Optionally, the preset operating condition includes any one of the following:

[0095] The engine starting process;

[0096] The engine shutoff process;

[0097] The acceleration or deceleration process of the vehicle.

[0098] Optionally, the starting process includes a process in which the engine changes from starting to idling; and the shutoff process includes a process in which the engine changes from idling to shutting down.

[0099] Optionally, the current engine speed change parameter of the engine includes the current drag torque of the engine; and the dilution rate calculation module includes:

[0100] a third calculation submodule, configured to determine a first engine oil dilution rate for the vehicle using the coolant temperature, the drag torque, and a preset dilution rate model; the dilution rate model being configured to reflect a relationship among the engine's coolant temperature, the drag torque, and the engine oil dilution rate.

[0101] In summary, embodiments of the present invention provide an oil dilution rate monitoring device. After obtaining a vehicle's current engine coolant temperature and an engine speed variation parameter reflecting engine speed acceleration, the device utilizes the coolant temperature, engine speed variation parameter, and a pre-set dilution rate model to determine a first oil dilution rate for the vehicle. This method enables real-time monitoring of the oil dilution rate, providing timely insight into the oil dilution status and enabling timely action to adjust the oil dilution, thereby ensuring oil quality and minimizing the risk of engine damage.

[0102] A third aspect of an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the above-mentioned method for monitoring the oil dilution rate is implemented.

[0103] A fourth aspect of the embodiment of the present application provides a vehicle, comprising the aforementioned oil dilution rate monitoring device 200 to implement the aforementioned oil dilution rate monitoring method.

[0104] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0105] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0106] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, devices, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0107] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0108] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0109] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0110] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0111] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0112] The above is a detailed introduction to the oil dilution rate monitoring method, device, storage medium and vehicle provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core ideas of the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

1. A method for monitoring engine oil dilution rate, characterized in that: The method comprises: Obtain the current coolant temperature and engine speed change parameters of the vehicle's engine; Determining a first engine oil dilution rate for the vehicle using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model; the dilution rate model is used to reflect the relationship between the engine coolant temperature, the engine speed variation parameter, and the engine oil dilution rate; The engine speed change parameters include the speed change duration of the preset working condition and the current resistance torque of the engine; The determining of the first engine oil dilution rate of the vehicle by using the coolant temperature, the engine speed change parameter, and a preset dilution rate model includes: The first engine oil dilution rate of the vehicle is determined using the coolant temperature, the speed change duration, and a preset dilution rate model; the dilution rate model is used to reflect the relationship between the engine coolant temperature, the speed change duration, and the engine oil dilution rate. or, Determining a first engine oil dilution rate for the vehicle using the coolant temperature, the drag torque, and a preset dilution rate model; wherein the dilution rate model is used to reflect the relationship between the engine coolant temperature, the drag torque, and the engine oil dilution rate; The preset working conditions include any one of the following: The starting process and the shutting down process of the engine, and the acceleration or deceleration process of the vehicle.

2. The method according to claim 1, characterized in that The dilution rate model is used to record the speed change duration of a preset operating condition under different coolant temperatures and oil dilution rates; and determining the first oil dilution rate of the vehicle using the coolant temperature, the speed change duration, and the preset dilution rate model includes: A first engine oil dilution rate of the vehicle is determined from the dilution rate model according to the coolant temperature and the speed change duration.

3. The method according to claim 1, characterized in that Before determining the first engine oil dilution rate of the vehicle by using the coolant temperature, the speed change duration, and a preset dilution rate model, the method further includes: Acquire an engine oil sample set and a coolant sample set, wherein the engine oil sample set includes engine oil samples at at least two dilution rates, and the coolant sample set includes coolant samples at at least two temperatures; Testing the engine of the vehicle based on the oil sample set and the coolant sample set, and recording test data; the test data includes the speed change duration of a preset operating condition corresponding to each set of dilution rate and coolant temperature; A dilution rate model is constructed based on the test data.

4. The method according to claim 1, wherein The starting process includes the process of the engine changing from starting to idling; the shutoff process includes the process of the engine changing from idling to shutting down.

5. A device for monitoring engine oil dilution rate, comprising: A data acquisition module is used to obtain the current coolant temperature and engine speed change parameters of the vehicle's engine; a calculation module, configured to determine a first engine oil dilution rate for the vehicle using the coolant temperature, the engine speed variation parameter, and a preset dilution rate model; the dilution rate model being configured to reflect a relationship between the engine coolant temperature, the engine speed variation parameter, and the engine oil dilution rate; The engine speed change parameters include the speed change duration of the preset working condition and the current resistance torque of the engine; The determining of the first engine oil dilution rate of the vehicle by using the coolant temperature, the engine speed change parameter, and a preset dilution rate model includes: The first engine oil dilution rate of the vehicle is determined using the coolant temperature, the speed change duration, and a preset dilution rate model; the dilution rate model is used to reflect the relationship between the engine coolant temperature, the speed change duration, and the engine oil dilution rate. or, Determining a first engine oil dilution rate for the vehicle using the coolant temperature, the drag torque, and a preset dilution rate model; wherein the dilution rate model is used to reflect the relationship between the engine coolant temperature, the drag torque, and the engine oil dilution rate; The preset working conditions include any one of the following: The starting process and the shutting down process of the engine, and the acceleration or deceleration process of the vehicle.

6. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for monitoring the oil dilution rate according to any one of claims 1 to 4 is implemented.

7. A vehicle, characterized in that: The device for monitoring the engine oil dilution rate as claimed in claim 5 is included to implement the method for monitoring the engine oil dilution rate as claimed in any one of claims 1 to 4.

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