A method, device, equipment and medium for monitoring engine lubricating oil

Abstract

This application provides a method, apparatus, device, and medium for monitoring engine lubricating oil. The method includes: acquiring vehicle driving data during the current driving start cycle; determining the lubricating oil consumption, mileage correction factor, and superimposed correction factor during the current driving start cycle based on the driving data, wherein the mileage correction factor corrects the lubricating oil consumption based on engine mileage, and the superimposed correction factor corrects the lubricating oil consumption based on the correlation between multiple influencing factors of lubricating oil consumption; and determining the vehicle's cumulative lubricating oil consumption based on the lubricating oil consumption during the current driving start cycle, the mileage correction factor, the superimposed correction factor, and the vehicle's historical lubricating oil consumption. This method eliminates the need for an additional level sensor, enabling targeted monitoring of lubricating oil consumption for vehicles with different driving habits and increasing the accuracy of engine lubricating oil monitoring.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method, device, electronic device, and computer-readable storage medium for monitoring engine lubricating oil. Background Technology

[0002] Engine lubricating oil has functions such as lubrication, cooling, washing, sealing, and rust prevention. It can prevent dry friction between various internal engine components, power loss, thermal deformation, and damage, and is crucial for the normal operation of the engine.

[0003] Specifically, during engine operation, lubricating oil circulates continuously, resulting in significant lubricating oil consumption through the breathing system, piston rings, valve stem seals, turbocharger, and other components. When the lubricating oil content in the oil pan is insufficient, it will affect engine lubrication and cause serious malfunctions such as cylinder scoring and bearing failure. Therefore, monitoring engine lubricating oil is particularly important.

[0004] In related technologies, the industry typically adds a level sensor to the engine oil pan to monitor the engine lubricating oil level. However, this method requires an additional sensor, resulting in high cost and limited applicability. Summary of the Invention

[0005] This application provides a method for monitoring engine lubricating oil. This method, without requiring an additional level sensor, enables accurate monitoring of engine lubricating oil levels for vehicles with different driving habits. This application also provides a corresponding device, electronic equipment, and computer-readable storage medium.

[0006] In a first aspect, this application provides a method for monitoring engine lubricating oil, the method comprising:

[0007] Acquire vehicle driving data during the current driving start cycle;

[0008] Based on the driving data, the lubricating oil consumption, mileage correction coefficient, and superposition correction coefficient in the current driving start cycle are determined. The mileage correction coefficient corrects the lubricating oil consumption based on the engine running mileage, and the superposition correction coefficient corrects the lubricating oil consumption based on the correlation between multiple influencing factors of the lubricating oil consumption.

[0009] The cumulative lubricant consumption of the vehicle is determined based on the lubricant consumption during the current driving start cycle, the mileage correction factor, the superposition correction factor, and the vehicle's historical lubricant consumption.

[0010] In some possible implementations, the method further includes:

[0011] When the cumulative lubricating oil consumption of the vehicle exceeds the lubricating oil consumption threshold, a prompt message is sent, and the engine speed of the vehicle is limited to be less than or equal to the engine speed threshold; wherein, the prompt message is used to remind the user to change the engine lubricating oil.

[0012] In some possible implementations, the driving data includes engine speed, engine torque, and engine running time, and determining the lubricating oil consumption during the current driving start cycle based on the driving data includes:

[0013] The lubricating oil consumption rate during the current driving start cycle is determined based on the engine speed and the engine torque.

[0014] The amount of lubricating oil consumed in the current driving start cycle is determined based on the lubricating oil consumption rate and the engine running time.

[0015] In some possible implementations, the driving data also includes coolant temperature, ambient temperature, and lubricating oil viscosity parameters. Determining the lubricating oil consumption rate during the current driving start cycle based on the engine speed and engine torque includes:

[0016] The initial lubricating oil consumption rate in the current driving start cycle is determined based on the engine speed and the engine torque.

[0017] A first correction factor is determined based on the coolant temperature, a second correction factor is determined based on the ambient temperature, and a third correction factor is determined based on the lubricating oil viscosity parameter.

[0018] The initial lubricating oil consumption rate is corrected using the first correction coefficient, the second correction coefficient, and the third correction coefficient to determine the lubricating oil consumption rate in the current driving start cycle.

[0019] In some possible implementations, the driving data includes cumulative engine speeds, coolant temperature, and lubricating oil viscosity parameters. The step of determining the mileage correction factor and the superposition correction factor based on the driving data includes:

[0020] A mileage correction factor is determined based on the cumulative engine speed, and a superposition correction factor is determined based on the cumulative engine speed, the coolant temperature, and the lubricating oil viscosity parameters.

[0021] In some possible implementations, determining the mileage correction factor based on the cumulative engine revolutions includes:

[0022] When the cumulative engine speed is less than or equal to the first threshold, the mileage correction coefficient is determined to be a first fixed value.

[0023] When the cumulative engine speed is greater than a first threshold and less than a second threshold, the mileage correction coefficient is determined to be a second value, which is greater than the first fixed value and positively correlated with the cumulative engine speed.

[0024] When the cumulative engine revolutions are greater than or equal to the second threshold, the mileage correction coefficient is determined to be a second fixed value; wherein the first threshold is less than the second threshold, and the second fixed value is greater than the second value;

[0025] The determination of the superposition correction coefficient based on the cumulative engine speed, the coolant temperature, and the lubricating oil viscosity parameters includes:

[0026] Determine whether the cumulative engine speed meets the first condition, whether the coolant temperature meets the second condition, and whether the lubricating oil viscosity parameter meets the third condition;

[0027] When two of the first, second, and third conditions are met, the superimposed correction coefficient is a third fixed value.

[0028] When the first condition, the second condition, and the third condition are met, the superposition correction coefficient is a fourth fixed value, which is greater than the third fixed value.

[0029] In some possible implementations, determining the cumulative lubricant consumption of the vehicle based on the lubricant consumption during the current driving start cycle, the mileage correction factor, the cumulative correction factor, and the vehicle's historical lubricant consumption includes:

[0030] The lubricating oil consumption in the current driving start cycle is corrected using a mileage correction factor and a superposition correction factor to determine the corrected lubricating oil consumption.

[0031] The cumulative lubricating oil consumption of the vehicle is determined using the corrected lubricating oil consumption and the vehicle's historical lubricating oil consumption.

[0032] Secondly, this application provides an engine lubricating oil monitoring device, the device comprising:

[0033] The acquisition module is used to acquire the vehicle's driving data during the current driving start cycle;

[0034] The first determining module is used to determine the lubricating oil consumption, mileage correction coefficient, and superposition correction coefficient in the current driving start cycle based on the driving data. The mileage correction coefficient corrects the lubricating oil consumption based on the engine running mileage, and the superposition correction coefficient corrects the lubricating oil consumption based on the correlation between multiple influencing factors of the lubricating oil consumption.

[0035] The second determining module is used to determine the cumulative lubricating oil consumption of the vehicle based on the lubricating oil consumption in the current driving start cycle, the mileage correction factor, the superposition correction factor, and the historical lubricating oil consumption of the vehicle.

[0036] In some possible implementations, the device further includes a prompting module, the prompting module being used for:

[0037] When the cumulative lubricating oil consumption of the vehicle exceeds the lubricating oil consumption threshold, a prompt message is sent, and the engine speed of the vehicle is limited to be less than or equal to the engine speed threshold; wherein, the prompt message is used to remind the user to change the engine lubricating oil.

[0038] In some possible implementations, the driving data includes engine speed, engine torque, and engine running time, and the first determining module is specifically used for:

[0039] The lubricating oil consumption rate during the current driving start cycle is determined based on the engine speed and the engine torque.

[0040] The amount of lubricating oil consumed in the current driving start cycle is determined based on the lubricating oil consumption rate and the engine running time.

[0041] In some possible implementations, the driving data also includes coolant temperature, ambient temperature, and lubricating oil viscosity parameters, and the first determining module is specifically used for:

[0042] The initial lubricating oil consumption rate in the current driving start cycle is determined based on the engine speed and the engine torque.

[0043] A first correction factor is determined based on the coolant temperature, a second correction factor is determined based on the ambient temperature, and a third correction factor is determined based on the lubricating oil viscosity parameter.

[0044] The initial lubricating oil consumption rate is corrected using the first correction coefficient, the second correction coefficient, and the third correction coefficient to determine the lubricating oil consumption rate in the current driving start cycle.

[0045] In some possible implementations, the driving data includes the cumulative engine speed, coolant temperature, and lubricating oil viscosity parameters, and the first determining module is specifically used for:

[0046] A mileage correction factor is determined based on the cumulative engine speed, and a superposition correction factor is determined based on the cumulative engine speed, the coolant temperature, and the lubricating oil viscosity parameters.

[0047] In some possible implementations, the first determining module is specifically used for:

[0048] When the cumulative engine speed is less than or equal to the first threshold, the mileage correction coefficient is determined to be a first fixed value.

[0049] When the cumulative engine speed is greater than a first threshold and less than a second threshold, the mileage correction coefficient is determined to be a second value, which is greater than the first fixed value and positively correlated with the cumulative engine speed.

[0050] When the cumulative engine revolutions are greater than or equal to the second threshold, the mileage correction coefficient is determined to be a second fixed value; wherein the first threshold is less than the second threshold, and the second fixed value is greater than the second value;

[0051] Determine whether the cumulative engine speed meets the first condition, whether the coolant temperature meets the second condition, and whether the lubricating oil viscosity parameter meets the third condition;

[0052] When two of the first, second, and third conditions are met, the superimposed correction coefficient is a third fixed value.

[0053] When the first condition, the second condition, and the third condition are met, the superposition correction coefficient is a fourth fixed value, which is greater than the third fixed value.

[0054] In some possible implementations, the second determining module is specifically used for:

[0055] The lubricating oil consumption in the current driving start cycle is corrected using a mileage correction factor and a superposition correction factor to determine the corrected lubricating oil consumption.

[0056] The cumulative lubricating oil consumption of the vehicle is determined using the corrected lubricating oil consumption and the vehicle's historical lubricating oil consumption.

[0057] Thirdly, this application provides an electronic device. The electronic device includes a processor and a memory, the memory storing instructions, and the processor executing the instructions to cause the electronic device platform to perform the method as described in the first aspect of this application or any implementation thereof.

[0058] Fourthly, this application provides a computer-readable storage medium. The computer-readable storage medium stores instructions that, when executed on an electronic device, cause the electronic device to perform the method described in the first aspect or any implementation thereof.

[0059] Fifthly, this application provides a computer program product. The computer program product includes computer-readable instructions that, when executed on an electronic device, cause the electronic device to perform the method described in the first aspect or any implementation thereof.

[0060] Based on the implementation methods provided in the above aspects, this application can be further combined to provide more implementation methods.

[0061] Based on the above description, it can be seen that the technical solution of this application has the following beneficial effects:

[0062] Specifically, the method first acquires the vehicle's driving data in the current driving start cycle, and then determines the lubricating oil consumption, mileage correction coefficient, and superposition correction coefficient in the current driving start cycle based on the driving data. The mileage correction coefficient corrects the lubricating oil consumption based on the engine mileage, and the superposition correction coefficient corrects the lubricating oil consumption based on the correlation between multiple influencing factors of the lubricating oil consumption. Based on the lubricating oil consumption in the current driving start cycle, the mileage correction coefficient, the superposition correction coefficient, and the vehicle's historical lubricating oil consumption, the cumulative lubricating oil consumption of the vehicle is determined.

[0063] This method eliminates the need for additional fluid level sensors. By combining specific vehicle driving data, it determines lubricant consumption, enabling targeted monitoring of lubricant consumption for vehicles with different driving habits. Furthermore, considering the impact of increased engine mileage on lubricant consumption, as well as the cumulative effect of multiple influencing factors, it corrects for lubricant consumption using mileage correction and cumulative correction factors, thereby increasing the accuracy of engine lubricant monitoring. Attached Figure Description

[0064] The above and other features, advantages, and aspects of the embodiments of this application will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0065] Figure 1 A flowchart illustrating a method for monitoring engine lubricating oil provided in an embodiment of this application;

[0066] Figure 2 A schematic flowchart illustrating another method for monitoring engine lubricating oil provided in this application embodiment;

[0067] Figure 3 A schematic flowchart illustrating another method for monitoring engine lubricating oil provided in this application embodiment;

[0068] Figure 4 A schematic diagram of the structure of an engine lubricating oil monitoring device provided in an embodiment of this application;

[0069] Figure 5 This is a schematic diagram of an electronic device for monitoring engine lubricating oil, provided as an embodiment of this application. Detailed Implementation

[0070] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0071] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0072] It should be noted that the concepts of "first" and "second" mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0073] It should be noted that the terms "a" and "a plurality of" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0074] To facilitate understanding of the technical solution of this application, the specific application scenarios in this application are described below.

[0075] Among related technologies, the main methods for monitoring engine lubricating oil include the dipstick method and the lubricating oil level method. The dipstick method is simple, convenient, and inexpensive, but it suffers from the problem of users not checking in a timely manner. The lubricating oil level method can monitor the lubricating oil level in real time, but it requires adding a level sensor to the engine oil pan, which is more expensive and has poorer applicability.

[0076] Furthermore, the above methods are typically applied to gasoline-powered vehicles. Because the actual operating conditions and level of intervention of hybrid vehicle engines differ significantly from those of gasoline-powered vehicles, the monitoring performance of these methods is poor when applied to hybrid vehicles.

[0077] Hybrid electric vehicles (HEVs) have various technical solutions, including hybrid electric systems, plug-in hybrid systems, range-extended hybrid systems, and 48V hybrid systems. The engine's operating mode, operating conditions, and whether it participates in driving vary under different HEV technical solutions. Generally, the main driving force of a HEV comes from the electric motor, while the engine is used for auxiliary driving or power generation. The engine operation of a HEV has the following characteristics: (1) The engine running time is relatively short during driving; (2) The engine operating conditions are simple, and the speed load is relatively low; (3) During driving, the engine is often accompanied by frequent start-stop conditions; (4) The driver's driving conditions, charging timeliness, and other usage habits have a great influence on the actual running time of the engine in a HEV.

[0078] Because the engines of hybrid vehicles and gasoline vehicles operate very differently, how to conduct targeted monitoring of engine lubricating oil has become an urgent problem to be solved in the industry.

[0079] Based on this, this application provides a method for monitoring engine lubricating oil. Specifically, the method first acquires the vehicle's driving data during the current driving start cycle. Then, based on the driving data, it determines the lubricating oil consumption, mileage correction factor, and superimposed correction factor during the current driving start cycle. The mileage correction factor corrects the lubricating oil consumption based on the engine's operating mileage. The superimposed correction factor corrects the lubricating oil consumption based on the correlation between multiple influencing factors. Based on the lubricating oil consumption during the current driving start cycle, the mileage correction factor, the superimposed correction factor, and the vehicle's historical lubricating oil consumption, the cumulative lubricating oil consumption of the vehicle is determined.

[0080] This method eliminates the need for additional fluid level sensors. By combining specific vehicle driving data, it determines lubricant consumption, enabling targeted monitoring of lubricant consumption for vehicles with different driving habits. Furthermore, considering the impact of increased engine mileage on lubricant consumption, as well as the cumulative effect of multiple influencing factors, it corrects for lubricant consumption using mileage correction and cumulative correction factors, thereby increasing the accuracy of engine lubricant monitoring.

[0081] Next, the engine lubricating oil monitoring method provided in the embodiments of this application will be described in detail with reference to the accompanying drawings.

[0082] See Figure 1 The diagram shows a flowchart of a method for monitoring engine lubricating oil, which specifically includes the following steps:

[0083] S101: Obtain vehicle driving data during the current driving start cycle.

[0084] During a maintenance cycle, by acquiring vehicle driving data for each driving start-up cycle, the engine lubricating oil can be monitored based on specific driving habits.

[0085] The maintenance cycle can be understood as the service life of the engine oil. One maintenance cycle begins with changing the engine oil and ends with the next engine oil change. The driving start cycle, also known as the driving cycle, can be understood as the process of starting, running, and turning off the vehicle.

[0086] Specifically, driving data may include one or more of the following parameters: engine speed, engine torque, engine running time, cumulative engine speed, coolant temperature, ambient temperature, and lubricating oil viscosity.

[0087] S102: Based on driving data, determine the lubricating oil consumption, mileage correction factor, and superposition correction factor in the current driving start cycle.

[0088] Combination Figure 2 To explain, driving data can include engine speed, engine torque, and engine running time. Combining this driving data, the amount of lubricating oil consumed during the current driving start-up cycle can be determined. Specifically, based on engine speed and engine torque, the lubricating oil consumption rate during the current driving start-up cycle is determined. Then, based on the lubricating oil consumption and engine running time, the total lubricating oil consumption during the current driving start-up cycle is determined.

[0089] Unlike related technologies that determine lubricant consumption by checking the lubricant dipstick or using a level sensor, this application embodiment determines lubricant consumption using vehicle driving data during the current driving start cycle without the need for additional sensors, covering technical solutions for different driving habits and different hybrid vehicles.

[0090] In some embodiments, considering that the lubricating oil consumption rate can be related to factors such as engine operating conditions, usage environment, and lubricating oil type, for example, the higher the coolant temperature, the higher the temperature at the cylinder bore and piston, the greater the thermal deformation of the components, and the higher the lubricating oil consumption rate; for example, the lower the ambient temperature, the more carbon deposits on the engine piston and piston rings, which aggravates wear and the lubricating oil consumption rate will also increase; for example, the viscosity of the lubricating oil affects its volatility characteristics, and when the viscosity of the lubricating oil is low, it will affect the lubricating oil consumption. Therefore, by identifying the factors affecting the lubricating oil consumption, the lubricating oil consumption can be adjusted accordingly.

[0091] In practice, driving data can also include coolant temperature, ambient temperature, and lubricant viscosity parameters. Continuing... Figure 2 As shown, firstly, the initial lubricating oil consumption rate in the current driving start cycle is determined based on engine speed and engine torque. Then, a first correction factor is determined based on coolant temperature, a second correction factor is determined based on ambient temperature, and a third correction factor is determined based on lubricating oil viscosity parameters. Finally, the initial lubricating oil consumption rate is corrected using the first, second, and third correction factors to determine the lubricating oil consumption rate in the current driving start cycle.

[0092] Thus, this application embodiment takes into account the influence of coolant temperature, ambient temperature, and lubricating oil viscosity parameters on lubricating oil consumption rate. By acquiring driving data, the lubricating oil consumption rate is corrected based on the specific driving data, thereby improving the accuracy of engine lubricating oil monitoring.

[0093] In this embodiment of the application, driving data can also be used to determine mileage correction coefficients and superimposed correction coefficients. The mileage correction coefficient can correct lubricating oil consumption based on engine mileage, while the superimposed correction coefficient can correct lubricating oil consumption based on the correlation between multiple influencing factors.

[0094] In other words, considering that increased engine mileage can lead to accelerated wear of engine moving parts, resulting in increased engine lubricating oil consumption, a mileage correction factor is used to adjust for lubricating oil consumption. Furthermore, considering that lubricating oil consumption is influenced by numerous factors, and that the combined effect of different factors can exacerbate the impact, a cumulative correction factor is used to adjust for lubricating oil consumption.

[0095] In practice, driving data can also include the cumulative engine speed. Based on the cumulative engine speed, a mileage correction factor can be determined, and based on the cumulative engine speed, coolant temperature, and lubricating oil viscosity parameters, a superposition correction factor can be determined.

[0096] In other words, the engine mileage is identified based on the cumulative engine speed, and the superimposed influence relationship between multiple influencing factors is identified based on the cumulative engine speed, coolant temperature, and lubricating oil viscosity parameters, thereby determining the correction coefficient.

[0097] In some embodiments, when the cumulative engine speed is less than or equal to a first threshold, the mileage correction factor can be determined to be a first fixed value; when the cumulative engine speed is greater than the first threshold and less than a second threshold, the mileage correction factor can be determined to be a second value, which is greater than the first fixed value and positively correlated with the cumulative engine speed; when the cumulative engine speed is greater than or equal to the second threshold, the mileage correction factor is determined to be a second fixed value.

[0098] Among them, the first threshold is less than the second threshold, and the second fixed value is greater than the second value.

[0099] In other words, when the cumulative engine speed is low, i.e., the cumulative engine mileage is low, the mileage correction factor can be small, resulting in a small correction for lubricating oil consumption. When the cumulative engine speed is in a medium range, the mileage correction factor can increase as the cumulative engine speed increases, resulting in a gradually increasing correction for lubricating oil consumption. When the cumulative engine speed is high, i.e., the cumulative engine mileage is high, the mileage correction factor can be large, resulting in a large correction for lubricating oil consumption.

[0100] In other embodiments, it is determined whether the cumulative engine speed meets a first condition, whether the coolant temperature meets a second condition, and whether the lubricating oil viscosity parameter meets a third condition. When two of the first, second, and third conditions are met, a correction coefficient is superimposed to a third fixed value; when the first, second, and third conditions are met, a correction coefficient is superimposed to a fourth fixed value. The fourth fixed value is greater than the third fixed value.

[0101] In other words, when two of the parameters—accumulated engine speeds, coolant temperature, and lubricating oil viscosity—have a cumulative effect on lubricating oil consumption, the cumulative correction coefficient can be small, resulting in a smaller correction to lubricating oil consumption. When all three of these parameters have a cumulative effect on lubricating oil consumption, the cumulative correction coefficient can be large, resulting in a larger correction to lubricating oil consumption.

[0102] Thus, the mileage correction factor and the superposition correction factor are determined, so that the lubricating oil consumption can be adjusted based on the actual operating conditions of the vehicle, thereby achieving targeted engine lubricating oil monitoring.

[0103] S103: Determine the vehicle's cumulative lubricant consumption based on the lubricant consumption during the current driving start cycle, the mileage correction factor, the cumulative correction factor, and the vehicle's historical lubricant consumption.

[0104] In the specific implementation, continue as follows Figure 2 As shown, the lubricating oil consumption in the current driving start cycle is first corrected using the mileage correction factor and the superposition correction factor to determine the corrected lubricating oil consumption. Then, the cumulative lubricating oil consumption of the vehicle is determined using the corrected lubricating oil consumption and the vehicle's historical lubricating oil consumption.

[0105] Historical lubricating oil consumption can be understood as the amount of lubricating oil consumed during the current maintenance cycle. Thus, by adjusting the lubricating oil consumption for the current driving and starting cycle using mileage correction factors and cumulative correction factors, and combining this with historical lubricating oil consumption, accurate monitoring of engine lubricating oil can be achieved.

[0106] Furthermore, when the vehicle's cumulative lubricant consumption exceeds the lubricant consumption threshold, a prompt message can be sent, and the vehicle's engine speed can be limited to be less than or equal to the engine speed threshold. This prompt message can be used to remind the user to change the engine lubricant.

[0107] In other words, if the lubricating oil consumption in the current maintenance cycle has reached the condition for changing the lubricating oil (i.e., it exceeds the lubricating oil consumption threshold), the user can be promptly reminded to change the lubricating oil, and the vehicle's driving safety can be ensured by limiting the engine speed.

[0108] Based on the above description, this application provides a method for monitoring engine lubricating oil. The method first acquires vehicle driving data during the current driving start cycle. Then, based on the driving data, it determines the lubricating oil consumption, mileage correction factor, and superimposed correction factor during the current driving start cycle. The mileage correction factor corrects the lubricating oil consumption based on engine mileage. The superimposed correction factor corrects the lubricating oil consumption based on the correlation between multiple influencing factors. Finally, based on the lubricating oil consumption during the current driving start cycle, the mileage correction factor, the superimposed correction factor, and the vehicle's historical lubricating oil consumption, the vehicle's cumulative lubricating oil consumption is determined.

[0109] This method eliminates the need for additional fluid level sensors. By combining specific vehicle driving data, it determines lubricant consumption, enabling targeted monitoring of lubricant consumption for vehicles with different driving habits. Furthermore, considering the impact of increased engine mileage on lubricant consumption, as well as the cumulative effect of multiple influencing factors, it corrects for lubricant consumption using mileage correction and cumulative correction factors, thereby increasing the accuracy of engine lubricant monitoring.

[0110] The engine lubricating oil monitoring method provided in this application will be explained below in a specific scenario.

[0111] See Figure 3 First, the vehicle's driving data during the current driving start cycle is obtained. The driving data includes engine speed, engine torque, coolant temperature, ambient temperature, lubricating oil viscosity parameters, engine running time, and cumulative engine speed.

[0112] Next, based on engine speed and engine torque, the initial lubricating oil consumption rate for the current driving start cycle is determined. Specifically, this can be achieved by using a lubricating oil consumption rate MAP (map) for engine speed and engine torque, and then retrieving the initial lubricating oil consumption rate at the current engine speed and torque from the MAP.

[0113] Since lubricating oil is consumed by entering the combustion chamber for combustion and being discharged through the exhaust, a high-sulfur additive was added to the lubricating oil to artificially increase its sulfur content. Based on the law of element conservation during engine combustion, the proportion of sulfur in the exhaust was monitored, and the lubricating oil consumption rate was calculated. The lubricating oil consumption rate MAP for engine speed and engine torque was obtained, as shown in Table 1.

[0114] Table 1

[0115]

[0116] Based on the coolant temperature, ambient temperature, and lubricant viscosity parameters, the first correction factor, the second correction factor, and the third correction factor can be determined respectively.

[0117] In practical implementation, coolant temperature is denoted by Tc, and the first correction factor is denoted by α. When Tc ≤ 60°C, α = 0.9; when 60 < Tc < 100°C, α = 0.0025Tc + 0.75; and when Tc ≥ 100°C, α = 1.05. Ambient temperature is denoted by Te, and the second correction factor is denoted by λ. When Tc ≤ -30°C, λ = 1.03; when -30 < Te < 0, λ = -0.001Te + 1; and when Tc ≥ 0, λ = 1. Lubricating oil viscosity parameter is denoted by v, in cSt, which can be obtained through sensor acquisition. The third correction factor is denoted by θ. When v ≤ 4, θ = 1.15; and when 4 < v < 9, θ = 0.005v. 2 -0.095v+1.45, when v≥9, θ=1.

[0118] The initial lubricating oil consumption rate is corrected using a first correction factor, a second correction factor, and a third correction factor. For example, the initial lubricating oil consumption rate is multiplied by the first correction factor, the second correction factor, and the third correction factor to determine the lubricating oil consumption rate in the current driving start cycle. Then, the lubricating oil consumption rate in the current driving start cycle is multiplied by the engine running time to determine the lubricating oil consumption amount in the current driving start cycle.

[0119] The mileage correction factor can also be determined based on the cumulative engine revolutions. Specifically, since hybrid vehicles have a pure electric driving mode where the engine does not operate, directly counting the vehicle's mileage cannot accurately represent the engine's operating time. Therefore, the cumulative engine revolutions are used to characterize the engine's operating status. The cumulative engine revolutions are denoted by S, in tens of millions of revolutions, and the mileage correction factor is denoted by β. When S ≤ 4.88, β = 1; when 4.88 < S < 29.3, β = 0.0041S + 1; and when S ≥ 29.3, β = 1.15.

[0120] Based on the engine's cumulative operating speed, coolant temperature, and lubricating oil viscosity parameters, a superposition correction factor can be determined. Specifically, the superposition correction factor is denoted by η. The first condition is that the engine's cumulative operating speed is greater than or equal to 293 million revolutions per minute; the second condition is that the coolant temperature is greater than or equal to 100°C; and the third condition is that the lubricating oil viscosity coefficient is less than or equal to 4 cST. When the first and second conditions are met, or when the first and third conditions are met, η = 1.05. When all three conditions are met, η = 1.1.

[0121] The lubricating oil consumption is corrected using a mileage correction factor and a cumulative correction factor. For example, the lubricating oil consumption is multiplied by the mileage correction factor and then by the cumulative correction factor to obtain the corrected lubricating oil consumption. The corrected lubricating oil consumption is then added to the historical lubricating oil consumption of the current maintenance cycle to obtain the cumulative lubricating oil consumption of the current maintenance cycle.

[0122] Next, it is determined whether the cumulative lubricating oil consumption exceeds the lubricating oil consumption threshold. The lubricating oil consumption threshold can be determined based on the actual engine maintenance indicators of the vehicle. For example, when the lubricating oil consumption corresponding to the engine maintenance indicators of the vehicle is 1 liter, considering a certain safety margin, the lubricating oil consumption threshold can be set to 0.95 liters.

[0123] When the cumulative lubricating oil consumption exceeds the lubricating oil consumption threshold, a prompt message is sent to remind the user to change the engine lubricating oil. At the same time, the engine speed is limited, for example, the engine speed is limited to less than or equal to 5300 rpm.

[0124] Based on the methods provided in the embodiments of this application, the embodiments of this application also provide an engine lubricating oil monitoring device corresponding to the above methods. The units / modules described in the embodiments of this application can be implemented in software or hardware. The names of the units / modules do not, in certain circumstances, constitute a limitation on the unit / module itself.

[0125] See Figure 4 The schematic diagram shown depicts a device 400 for monitoring engine lubricating oil. The device includes:

[0126] The acquisition module 401 is used to acquire the vehicle's driving data in the current driving start cycle;

[0127] The first determining module 402 is used to determine the lubricating oil consumption, mileage correction coefficient, and superposition correction coefficient in the current driving start cycle based on the driving data. The mileage correction coefficient corrects the lubricating oil consumption based on the engine running mileage, and the superposition correction coefficient corrects the lubricating oil consumption based on the correlation between multiple influencing factors of the lubricating oil consumption.

[0128] The second determining module 403 is used to determine the cumulative lubricating oil consumption of the vehicle based on the lubricating oil consumption in the current driving start cycle, the mileage correction coefficient, the superposition correction coefficient, and the historical lubricating oil consumption of the vehicle.

[0129] In some possible implementations, the device further includes a prompting module, the prompting module being used for:

[0130] When the cumulative lubricating oil consumption of the vehicle exceeds the lubricating oil consumption threshold, a prompt message is sent, and the engine speed of the vehicle is limited to be less than or equal to the engine speed threshold; wherein, the prompt message is used to remind the user to change the engine lubricating oil.

[0131] In some possible implementations, the driving data includes engine speed, engine torque, and engine running time, and the first determining module 402 is specifically used for:

[0132] The lubricating oil consumption rate during the current driving start cycle is determined based on the engine speed and the engine torque.

[0133] The amount of lubricating oil consumed in the current driving start cycle is determined based on the lubricating oil consumption rate and the engine running time.

[0134] In some possible implementations, the driving data also includes coolant temperature, ambient temperature, and lubricating oil viscosity parameters, and the first determining module 402 is specifically used for:

[0135] The initial lubricating oil consumption rate in the current driving start cycle is determined based on the engine speed and the engine torque.

[0136] A first correction factor is determined based on the coolant temperature, a second correction factor is determined based on the ambient temperature, and a third correction factor is determined based on the lubricating oil viscosity parameter.

[0137] The initial lubricating oil consumption rate is corrected using the first correction coefficient, the second correction coefficient, and the third correction coefficient to determine the lubricating oil consumption rate in the current driving start cycle.

[0138] In some possible implementations, the driving data includes the cumulative engine speed, coolant temperature, and lubricating oil viscosity parameters, and the first determining module 402 is specifically used for:

[0139] A mileage correction factor is determined based on the cumulative engine speed, and a superposition correction factor is determined based on the cumulative engine speed, the coolant temperature, and the lubricating oil viscosity parameters.

[0140] In some possible implementations, the first determining module 402 is specifically used for:

[0141] When the cumulative engine speed is less than or equal to the first threshold, the mileage correction coefficient is determined to be a first fixed value.

[0142] When the cumulative engine speed is greater than a first threshold and less than a second threshold, the mileage correction coefficient is determined to be a second value, which is greater than the first fixed value and positively correlated with the cumulative engine speed.

[0143] When the cumulative engine speed is greater than or equal to the second threshold, the mileage correction coefficient is a second fixed value; wherein, the first threshold is less than the second threshold, and the second fixed value is greater than the cumulative engine speed being greater than the second value;

[0144] Determine whether the cumulative engine speed meets the first condition, whether the coolant temperature meets the second condition, and whether the lubricating oil viscosity parameter meets the third condition;

[0145] When two of the first, second, and third conditions are met, the superimposed correction coefficient is a third fixed value.

[0146] When the first condition, the second condition, and the third condition are met, the superposition correction coefficient is a fourth fixed value, which is greater than the third fixed value.

[0147] In some possible implementations, the second determining module 403 is specifically used for:

[0148] The lubricating oil consumption in the current driving start cycle is corrected using a mileage correction factor and a superposition correction factor to determine the corrected lubricating oil consumption.

[0149] The cumulative lubricating oil consumption of the vehicle is determined using the corrected lubricating oil consumption and the vehicle's historical lubricating oil consumption.

[0150] The engine lubricating oil monitoring device 400 according to the embodiments of this application can correspond to the execution of the method described in the embodiments of this application, and the above and other operations and / or functions of each module / unit of the engine lubricating oil monitoring device 400 are respectively for implementing Figures 1 to 3 For the sake of brevity, the corresponding processes of each method in the illustrated embodiments will not be described in detail here.

[0151] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. See also Figure 5 The schematic diagram shown is of the electronic device 500 for monitoring engine lubricating oil. It should be noted that... Figure 5 The electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0152] like Figure 5As shown, the electronic device 500 may include a processing unit (e.g., a central processing unit, a graphics processor, etc.) 501, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 502 or a program loaded from a storage device 508 into a random access memory (RAM) 503. The RAM 503 also stores various programs and data required for the operation of the electronic device 500. The processing unit 501, ROM 502, and RAM 503 are interconnected via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0153] Typically, the following devices can be connected to I / O interface 505: input devices 506 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 507 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 508 including, for example, magnetic tapes, hard disks, etc.; and communication devices 509. Communication device 509 allows electronic device 500 to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 5 An electronic device 500 with various devices is shown; however, it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed alternatively.

[0154] This application also provides a computer-readable storage medium, also known as a machine-readable medium. In the context of this application, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0155] In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0156] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device. When the computer program is executed by a processing device, it performs the functions defined in the methods of the embodiments of this application.

[0157] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0158] While several specific implementation details are included in the foregoing discussion, these should not be construed as limiting the scope of this application. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0159] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A method for monitoring engine lubricating oil, characterized in that, The method includes: Acquire vehicle driving data during the current driving start cycle; Based on the driving data, the lubricating oil consumption, mileage correction coefficient, and superposition correction coefficient in the current driving start cycle are determined. The mileage correction coefficient corrects the lubricating oil consumption based on the engine running mileage, and the superposition correction coefficient corrects the lubricating oil consumption based on the correlation between multiple influencing factors of the lubricating oil consumption. The cumulative lubricating oil consumption of the vehicle is determined based on the lubricating oil consumption during the current driving start cycle, the mileage correction factor, the superposition correction factor, and the historical lubricating oil consumption of the vehicle. The driving data includes the cumulative engine speed, coolant temperature, and lubricating oil viscosity parameters. Based on the driving data, a mileage correction coefficient and a superposition correction coefficient are determined, including: determining the mileage correction coefficient based on the cumulative engine speed, and determining the superposition correction coefficient based on the cumulative engine speed, the coolant temperature, and the lubricating oil viscosity parameters. The mileage correction coefficient is determined based on the cumulative engine rotation speed, including: when the cumulative engine rotation speed is less than or equal to a first threshold, the mileage correction coefficient is determined to be a first fixed value; when the cumulative engine rotation speed is greater than the first threshold and less than a second threshold, the mileage correction coefficient is determined to be a second value, the second value being greater than the first fixed value and positively correlated with the cumulative engine rotation speed; when the cumulative engine rotation speed is greater than or equal to the second threshold, the mileage correction coefficient is determined to be a second fixed value; wherein the first threshold is less than the second threshold, and the second fixed value is greater than the second value.

2. The method according to claim 1, characterized in that, The method further includes: When the cumulative lubricating oil consumption of the vehicle exceeds the lubricating oil consumption threshold, a prompt message is sent, and the engine speed of the vehicle is limited to be less than or equal to the engine speed threshold; wherein, the prompt message is used to remind the user to change the engine lubricating oil.

3. The method according to claim 1, characterized in that, The driving data includes engine speed, engine torque, and engine running time. Determining the lubricating oil consumption during the current driving start cycle based on the driving data includes: The lubricating oil consumption rate during the current driving start cycle is determined based on the engine speed and the engine torque. The amount of lubricating oil consumed in the current driving start cycle is determined based on the lubricating oil consumption rate and the engine running time.

4. The method according to claim 3, characterized in that, The driving data also includes coolant temperature, ambient temperature, and lubricating oil viscosity parameters. Determining the lubricating oil consumption rate during the current driving start cycle based on the engine speed and engine torque includes: The initial lubricating oil consumption rate in the current driving start cycle is determined based on the engine speed and the engine torque. A first correction factor is determined based on the coolant temperature, a second correction factor is determined based on the ambient temperature, and a third correction factor is determined based on the lubricating oil viscosity parameter. The initial lubricating oil consumption rate is corrected using the first correction coefficient, the second correction coefficient, and the third correction coefficient to determine the lubricating oil consumption rate in the current driving start cycle.

5. The method according to claim 1, characterized in that, Based on the engine's cumulative operating speed, the coolant temperature, and the lubricating oil viscosity parameters, a superposition correction factor is determined, including: Determine whether the cumulative engine speed meets the first condition, whether the coolant temperature meets the second condition, and whether the lubricating oil viscosity parameter meets the third condition; When two of the first, second, and third conditions are met, the superimposed correction coefficient is a third fixed value. When the first condition, the second condition, and the third condition are met, the superposition correction coefficient is a fourth fixed value, which is greater than the third fixed value.

6. The method according to any one of claims 1 to 5, characterized in that, The step of determining the cumulative lubricant consumption of the vehicle based on the lubricant consumption during the current driving start cycle, the mileage correction factor, the cumulative correction factor, and the vehicle's historical lubricant consumption includes: The lubricating oil consumption in the current driving start cycle is corrected using a mileage correction factor and a superposition correction factor to determine the corrected lubricating oil consumption. The cumulative lubricating oil consumption of the vehicle is determined using the corrected lubricating oil consumption and the vehicle's historical lubricating oil consumption.

7. A device for monitoring engine lubricating oil, characterized in that, The device includes: The acquisition module is used to acquire the vehicle's driving data during the current driving start cycle; The first determining module is used to determine the lubricating oil consumption, mileage correction coefficient, and superposition correction coefficient in the current driving start cycle based on the driving data. The mileage correction coefficient corrects the lubricating oil consumption based on the engine running mileage, and the superposition correction coefficient corrects the lubricating oil consumption based on the correlation between multiple influencing factors of the lubricating oil consumption. The second determining module is used to determine the cumulative lubricating oil consumption of the vehicle based on the lubricating oil consumption in the current driving start cycle, the mileage correction factor, the superposition correction factor, and the vehicle's historical lubricating oil consumption; the driving data includes the cumulative engine speed, coolant temperature, and lubricating oil viscosity parameters. Based on the driving data, the mileage correction factor and the superposition correction factor are determined, including: determining the mileage correction factor based on the cumulative engine speed, and determining the superposition correction factor based on the cumulative engine speed, the coolant temperature, and the lubricating oil viscosity parameters; The mileage correction coefficient is determined based on the cumulative engine rotation speed, including: when the cumulative engine rotation speed is less than or equal to a first threshold, the mileage correction coefficient is determined to be a first fixed value; when the cumulative engine rotation speed is greater than the first threshold and less than a second threshold, the mileage correction coefficient is determined to be a second value, the second value being greater than the first fixed value and positively correlated with the cumulative engine rotation speed; when the cumulative engine rotation speed is greater than or equal to the second threshold, the mileage correction coefficient is determined to be a second fixed value; wherein the first threshold is less than the second threshold, and the second fixed value is greater than the second value.

8. An electronic device, characterized in that, The electronic device includes a processor and a memory, the memory storing instructions, the processor executing the instructions to cause the electronic device to perform the method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, It includes computer-readable instructions that, when executed on an electronic device, cause the electronic device to perform the method as described in any one of claims 1 to 6.

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