Vehicle maintenance reminding method and device, equipment and medium

Abstract

The invention discloses a vehicle maintenance reminding method and device, equipment and a medium, and the method comprises the steps that engine oil replacement influence factors are obtained, and the engine oil replacement influence factors comprise at least one of the following factors: an environment temperature coefficient, an engine strengthening degree influence coefficient, a first engine oil replacement influence coefficient and a second engine oil replacement influence coefficient; and according to the engine oil replacement influence factors and the basic engine oil replacement period, a target engine oil replacement period is determined, and engine oil replacement reminding is achieved. The engine oil replacement period is calculated through the engine oil replacement influence factors, whether the engine needs to be maintained or not can be timely and effectively reminded, the problem that waste is caused by premature engine oil replacement or engine damage is caused by delayed engine oil replacement is solved, and the engine use and maintenance cost is reduced under the condition that reliable operation of the engine is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of engine maintenance technology, and in particular to a vehicle maintenance reminder method, device, equipment and medium. Background Art

[0002] Traditional car maintenance typically follows the manufacturer's specifications, using fixed intervals and mileage as the basis for engine oil maintenance. This compromise isn't universally applicable to every vehicle. Due to varying operating conditions, such as fuel quality, road conditions, and driving habits, engine oil deteriorates at varying rates, leading to limitations in this fixed-interval maintenance approach. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the present application provides a vehicle maintenance reminder method, device, equipment and medium to solve at least one defect in the prior art.

[0004] To achieve the above and other purposes, the present application provides a vehicle maintenance reminder method, which includes: Obtaining an oil change influencing factor, the oil change influencing factor comprising at least one of the following: an ambient temperature coefficient, an engine hardening degree influencing coefficient, a first oil change influencing coefficient, and a second oil change influencing coefficient; the engine hardening degree influencing coefficient being determined based on an engine speed and an engine load; the first oil change influencing coefficient being determined based on the number of engine starts and stops; and the second oil change influencing coefficient being determined based on a warm-up temperature and an actual shutdown temperature, the warm-up temperature indicating a water temperature required for the engine to reach a normal operating state, and the actual shutdown temperature indicating an actual water temperature when the engine is shut down; The target oil change cycle is determined according to the oil change influencing factors and the basic oil change cycle, so as to provide a reminder for oil change.

[0005] In one embodiment of the present application, the method for obtaining the engine enhancement degree influence coefficient includes: Obtaining a time proportion of the engine operating in different speed ranges and load ranges, weights corresponding to the speed ranges and load ranges, and a first correction coefficient; the engine speed ranges are obtained by dividing the engine speed, each speed range corresponding to a weight; the engine load ranges are obtained by dividing the engine load, each load range corresponding to a weight; The engine enhancement degree influence coefficient is determined according to the time proportion of the engine running in different speed ranges and load ranges, the weights of the corresponding speed ranges and load ranges, and the first correction coefficient.

[0006] In an embodiment of the present application, the method for obtaining the first engine oil change influence coefficient includes: Obtaining the number of engine start-stop cycles and a second correction coefficient; Determining the first engine oil change influence coefficient based on the second correction coefficient and the number of engine start-stop cycles.

[0007] In an embodiment of the present application, the method for obtaining the second engine oil change influence coefficient includes: Obtaining the warm-up temperature, the actual shutdown temperature, and a third correction coefficient; Determining the second engine oil change influence coefficient according to the difference between the warm-up temperature and the actual shutdown temperature and the third correction coefficient.

[0008] In an embodiment of the present application, the method for obtaining the ambient temperature coefficient includes: Obtaining the ambient temperature, the reference temperature for engine oil performance evaluation, the running time of the engine in a set temperature environment, and a fourth correction coefficient; Determining the ambient temperature coefficient according to the ambient temperature, the reference temperature, the running time, and the fourth correction coefficient.

[0009] In an embodiment of the present application, the engine oil change influencing factors include a first engine oil change influencing factor and a second engine oil change influencing factor. Determining the target engine oil change cycle according to the engine oil change influencing factors and the basic engine oil change cycle includes: If the usage period of the air filter exceeds the replacement cycle of the air filter, then determining the target engine oil change cycle according to the first engine oil change influencing factor and the basic engine oil change cycle, where the first engine oil change influencing factor includes at least one of the ambient temperature coefficient, the engine intensification degree influence coefficient, the first engine oil change influence coefficient, the second engine oil change influence coefficient, and the air quality influence coefficient; If the usage period of the air filter does not exceed the replacement cycle of the air filter, then determining the target engine oil change cycle according to the second engine oil change influencing factor and the basic engine oil change cycle, where the second engine oil change influencing factor includes at least one of the ambient temperature coefficient, the engine intensification degree influence coefficient, the first engine oil change influence coefficient, and the second engine oil change influence coefficient.

[0010] In an embodiment of the present application, the method for obtaining the replacement cycle of the air filter includes: Obtaining the basic air filter replacement cycle; Determining the replacement cycle of the air filter according to the basic air filter replacement cycle and the air quality influence coefficient.

[0011] To achieve the above and other related objectives, the present application provides a vehicle maintenance reminder device, and the vehicle maintenance reminder device includes: A factor acquisition module, configured to acquire oil change influencing factors, where the oil change influencing factors include at least one of the following: an environmental temperature coefficient, an engine intensification degree influence coefficient, a first oil change influence coefficient, and a second oil change influence coefficient; the engine intensification degree influence coefficient is determined based on the engine speed and the engine load; the first oil change influence coefficient is determined based on the number of engine starts and stops; the second oil change influence coefficient is determined based on the warm-up temperature and the actual shutdown temperature, where the warm-up temperature represents the water temperature required for the engine to reach the normal working state, and the actual shutdown temperature represents the actual water temperature when the engine shuts down; the filter element replacement cycle includes an air filter element replacement cycle or / and an air-conditioning filter element replacement cycle; A cycle determination module, configured to determine a target oil change cycle according to the oil change influencing factors and the basic oil change cycle, so as to realize the reminder of oil change.

[0012] To achieve the above and other related objectives, the present application provides a vehicle maintenance reminder device, including: One or more processors; and A memory, configured to store one or more programs, and when the one or more programs are executed by the one or more processors, the memory realizes the vehicle maintenance reminder method.

[0013] To achieve the above and other related objectives, the present application provides one or more machine-readable media, on which instructions are stored, and when executed by one or more processors, the processors execute the vehicle maintenance reminder method.

[0014] The beneficial effects of the present application: A vehicle maintenance reminder method of the present application includes: obtaining oil change influencing factors, where the oil change influencing factors include at least one of the following: ambient temperature coefficient, engine intensification degree influencing coefficient, first oil change influencing coefficient, and second oil change influencing coefficient; the engine intensification degree influencing coefficient is determined based on the engine speed and the engine load; the first oil change influencing coefficient is determined based on the number of start-stop times; the second oil change influencing coefficient is determined based on the warm-up temperature and the actual shutdown temperature, where the warm-up temperature represents the water temperature required for the engine to reach the normal working state, and the actual shutdown temperature represents the actual water temperature when the engine shuts down; determining the target oil change cycle according to the oil change influencing factors and the basic oil change cycle to realize the reminder of oil change. By calculating the oil change cycle through the oil change influencing factors, the present application can timely and effectively remind whether the engine needs maintenance, avoid the waste caused by premature oil change or the engine damage caused by delayed change, and reduce the use and maintenance cost of the engine under the condition of ensuring the reliable operation of the engine.

[0015] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. Brief Description of the Drawings

[0016] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings: Figure 1 It is a schematic diagram of the implementation environment of the vehicle maintenance reminder method shown in an exemplary embodiment of the present application; Figure 2 It is a flowchart of the vehicle maintenance reminder method according to an embodiment of the present application; Figure 3 It is a schematic diagram of the vehicle maintenance reminder device according to an embodiment of the present application; Figure 4 It shows a schematic diagram of the structure of a computer system of a memory suitable for implementing the embodiments of the present application. Detailed Embodiments

[0017] The following describes the implementation modes of the present application through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0018] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. Therefore, only the components related to the present application are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0019] Although terms such as "first", "second", "A", and "B" can be used herein to describe various elements, these elements should not be limited by these terms and are only used to distinguish one element from another. For example, without departing from the scope of the following technology, the first element can be referred to as the second element, and similarly, the second element can be referred to as the first element. The term "and / or" includes combinations of multiple related items or any item among multiple related items.

[0020] As used herein, unless the context indicates otherwise, the singular form is also intended to include the plural form. It will be understood that the term "comprising" means the presence of the described features, quantities, steps, operations, elements, or combinations thereof, but does not exclude the presence or addition of one or more other features, quantities, steps, operations, elements, components, or combinations thereof.

[0021] Before the detailed description, it is intended to clarify that the division of components in this specification is only based on the main functions of each component. That is, two or more of the following-described components can be combined into one component, or can be divided into two or more components according to more detailed functions. In addition to the main functions of the components, each of the following-described components can also perform some or all of the functions of other components, and some of the main functions of each component can be specifically performed by other components.

[0022] Figure 1It is a schematic diagram of the implementation environment of a vehicle maintenance reminder method according to an embodiment of the present application. This method calculates the engine oil change cycle by combining multiple engine oil change influencing factors, and generates a reminder message based on the engine oil change cycle. The reminder message is used to indicate that the engine oil needs to be changed. Among them, the engine oil change influencing factors include one or more of: an environmental temperature coefficient, an engine intensification degree influencing coefficient, a first engine oil change influencing coefficient, and a second engine oil change influencing coefficient; the engine intensification degree influencing coefficient is determined based on the engine speed and the engine load; the first engine oil change influencing coefficient is determined based on the number of start-stop times; the second engine oil change influencing coefficient is determined based on the warm-up temperature and the actual shutdown temperature. The warm-up temperature represents the water temperature required for the engine to reach the normal working state, and the actual shutdown temperature represents the actual water temperature when the engine shuts down. Please refer to Figure 1 , in this implementation environment, there are a terminal device 110 and a server 120. The terminal device 110 and the server 120 communicate with each other through a wireless network. The server will calculate the engine oil change cycle by using the engine oil change influencing factors and generate a reminder message, and then send the reminder message to the terminal device through the wireless network.

[0023] It should be understood that Figure 1 the numbers of the terminal device 110 and the server 120 in

[0024] are merely illustrative. According to actual needs, there can be any number of terminal devices 110 and servers 120.

[0025] Among them, the terminal device 110 corresponds to the client side, and it can be any electronic device with a user input interface, including but not limited to smart phones, tablets, laptop computers, computers, in-vehicle computers, etc. Among them, the user input interface includes but not limited to touch screens, keyboards, physical buttons, audio pickup devices, etc.

[0026] The terminal device 110 can communicate with the server 120 through wireless networks such as 3G (the third generation of mobile information technology), 4G (the fourth generation of mobile information technology), 5G (the fifth generation of mobile information technology), etc. This is not limited here either.

[0027] Embodiments of the present application respectively provide a vehicle maintenance reminder method, a vehicle maintenance reminder device, a vehicle maintenance reminder equipment, and a computer-readable storage medium. These embodiments will be described in detail below.

[0028] Please refer to Figure 2 , Figure 2 which is a schematic flowchart of a vehicle maintenance reminder method according to an embodiment of the present application. This vehicle maintenance reminder method can be applied to a range-extended vehicle. As Figure 2 shown, the vehicle maintenance reminder method includes: step S210 and step S220. Step S210: Obtain the oil change influencing factors, where the oil change influencing factors include at least one of the following: ambient temperature coefficient, engine intensification degree influence coefficient, first oil change influence coefficient, and second oil change influence coefficient; the engine intensification degree influence coefficient is determined based on the engine speed and the engine load; the first oil change influence coefficient is determined based on the number of start-stop times; the second oil change influence coefficient is determined based on the warm-up temperature and the actual shutdown temperature, where the warm-up temperature represents the water temperature required for the engine to reach the normal working state, and the actual shutdown temperature represents the actual water temperature when the engine shuts down.

[0029] Ambient temperature can affect the oil change cycle of a vehicle because temperature changes can alter the physical and chemical properties of the oil, thereby affecting its lubrication performance and degradation rate. Therefore, the ambient temperature coefficient is used as an influencing factor for the oil change cycle.

[0030] The number of start-stop times of the engine (especially cold starts) is closely related to the oil change cycle. Frequent start-stop can significantly accelerate the deterioration of the oil and increase engine wear, thus requiring a shorter oil change cycle. Therefore, the first oil change influence coefficient determined based on the number of start-stop times is used as an oil change influencing factor.

[0031] The adequacy of engine warm-up (preheating) directly affects the deterioration rate of the oil and the accumulation of pollutants, and thus has a significant impact on the replacement cycle. Therefore, the second oil change influence coefficient determined based on the warm-up temperature and the actual shutdown temperature is used as an oil change influencing factor.

[0032] Step S220: Determine the target oil change cycle according to the oil change influencing factors and the basic oil change cycle to achieve a reminder for oil change.

[0033] For step S220, when the oil change influencing factors include the ambient temperature coefficient , ; when the oil change influencing factors include the engine intensification degree influence coefficient , ; when the oil change influencing factors include the first oil change influence coefficient hour, ; When the oil change influencing factors include the second oil change influencing coefficient hour, ;in, Indicates the target oil change cycle, Indicates the basic oil change interval.

[0034] For example, when the factors affecting oil change include the ambient temperature coefficient , Engine strengthening degree influence coefficient hour, ; When the factors affecting oil replacement include the engine strengthening degree influence coefficient , First oil change impact coefficient hour, ; When the factors affecting oil replacement include the engine strengthening degree influence coefficient , Second oil change impact coefficient k hour, ; When the factors affecting oil replacement include ambient temperature coefficient , First oil change impact coefficient hour, ; When the factors affecting oil replacement include ambient temperature coefficient , Second oil change impact coefficient , ; When the oil change influencing factors include the first oil change influencing coefficient , Second oil change impact coefficient hour, .

[0035] For example, when the factors affecting oil change include the ambient temperature coefficient , Engine strengthening degree influence coefficient , First oil change impact coefficient hour, ; When the factors affecting oil replacement include the engine strengthening degree influence coefficient , First oil change impact coefficient , Second oil change impact coefficient k hour, ; When the factors affecting oil replacement include ambient temperature coefficient , First oil change impact coefficient , Second oil change impact coefficient k hour, .

[0036] For example, when the factors affecting oil replacement include the ambient temperature coefficient , Engine strengthening degree influence coefficient , First oil change impact coefficient 2. Second engine oil change impact coefficient When .

[0037] This application calculates the engine oil change cycle through one or more engine oil change influencing factors, which can timely and effectively remind whether the engine needs maintenance, avoid the waste caused by premature engine oil change or the engine damage caused by delayed engine oil change, and reduce the engine use and maintenance cost under the condition of ensuring the reliable operation of the engine.

[0038] In one embodiment, the method for obtaining the engine strengthening degree impact coefficient includes: obtaining the time ratios of the engine running in different speed intervals and load intervals, and the weights corresponding to the speed intervals and load intervals; the speed intervals of the engine are obtained by dividing the engine speed, and each speed interval corresponds to a weight, the load intervals of the engine are obtained by dividing the engine load, and each load interval corresponds to a weight; determining the engine strengthening degree impact coefficient according to the time ratios of the engine running in different speed intervals and load intervals, the weights corresponding to the speed intervals and load intervals, and the first correction coefficient.

[0039] To calculate the engine strengthening degree impact coefficient more precisely , the engine speed and load are respectively divided into multiple intervals, and an impact weight is assigned to each interval. The high-speed and high-load intervals have high impact weights, while the low-speed and low-load intervals have low impact weights. The division of the speed intervals and load intervals and the setting of the weights are as follows: Speed intervals: R 1,[[]] R 2, …,[[]] , and each interval corresponds to a weight (where = 1, 2, …,[[]] ).

[0040] Load intervals:[[]] L 1,[[]] L 2, …,[[]] , and each interval corresponds to a weight (where = 1, 2, …,[[]] ).

[0041] Next, calculate the time ratios of the engine running in each speed and load interval:[[]] Time ratio of the speed interval :[[]]

[0042] Time ratio of the load interval :[[]]

[0043] Among them, is the running time of the engine within the rotational speed range ; is the running time of the engine within the load range ; is the total running time of the engine.

[0044] Then, these time ratios and weights are used to calculate the engine intensification degree influence coefficient :

[0045] To control the comprehensive degree of influence of different ranges. In one embodiment, a correction coefficient (the first correction coefficient) is set to correct the engine intensification degree influence coefficient ;

[0046]

[0047] If the first correction coefficient , then the engine intensification degree influence coefficient is the weighted average of the running time ratios of each range; if it is necessary to enhance the influence of the high-weight range, then is set to >1; if it is necessary to weaken the influence of the high-weight range, then is set to 0 < <1.

[0048] Among them, , the first correction coefficient can be obtained through the following method: Test different rotational speed ranges, and under the same engine load, the influence of different rotational speeds on the deterioration degree of engine oil ; Test different engine loads, and under the same engine rotational speed range, the influence of different engine loads on the deterioration degree of engine oil ; Based on the engine load, engine rotational speed, and etc., perform fitting to obtain the first correction coefficient γ .

[0049] In one embodiment, the method for obtaining the first engine oil change influence coefficient includes: obtaining the start-stop times of the engine and a second correction coefficient; determining the first engine oil change influence coefficient based on the second correction coefficient and the start-stop times of the engine.

[0050] Start - stop times of the engine: Range - extended vehicles usually consider NVH (Noise, Vibration, Harshness) and control strategies for driving and power generation. The start - stop frequency is higher than that of traditional fuel vehicles. Therefore, the frequent start - stop of hybrid new energy vehicles will also affect the engine replacement cycle.

[0051] The start - stop times refer to the start - stop times per 100 kilometers. Of course, those skilled in the art can set it to other numbers of start - stop times according to actual needs, which is not restricted here.

[0052] The oil change coefficient determined according to the start - stop frequency, that is, the first oil change influence coefficient.

[0053] The first oil change influence coefficient is calculated by a linear model: (1) In formula (1), α represents the second correction coefficient, which is used to represent the influence degree of the start - stop frequency on the oil change cycle. The first oil change influence coefficient is the value in the calculation result of formula (1).

[0054] The second correction coefficient α can be determined by the following method: Obtain multiple groups of test data, fit the multiple groups of test data to obtain the α relationship with the start - stop times; Each group of test data includes engine load, speed, and start - stop times within the same mileage. The load, speed, and start - stop times in each group of test data are the same, but the start - stop times are different.

[0055] In an embodiment of the present application, the method for obtaining the second oil change influence coefficient includes: obtaining the warm - up temperature, the actual shutdown temperature, and the third correction coefficient; determining the second oil change influence coefficient according to the difference between the warm - up temperature and the actual shutdown temperature and the second correction coefficient.

[0056] Generally, when a range - extended electric vehicle starts the range extender, it will stop according to the working conditions or actual usage. Sometimes, it stops before completing the warm - up. In this case, the engine combustion is incomplete, which affects the oil change cycle. Therefore, the actual shutdown temperature and the warm - up temperature affect the oil change cycle.

[0057] The second oil change influence coefficient is affected by the actual shutdown temperature and the warm - up temperature. When the temperature is much lower than the warm - up temperature, the aging speed of the oil may increase more rapidly. Therefore, the second oil change influence coefficient can be expressed by an exponential relationship .

[0058] (2) In formula (2), is the warm-up temperature, representing the water temperature required for the engine to reach the normal operating state; is the actual shutdown temperature, representing the actual water temperature when the engine shuts down; α 1 is the third correction coefficient, which is an empirical constant used to adjust the sensitivity of the influence of temperature difference on the oil change cycle. is the value in the result calculated by formula (2). The third correction coefficient α 1 can be used to control the magnitude of, and will not make exceed 1 by too much, so that will not exceed the threshold and is within a reasonable range. The third correction coefficient α 1 can be obtained as follows: Test and record the actual water temperature and the degree of oil deterioration when the engine that has not completed warm-up shuts down in multiple groups, and determine α 1 by fitting the test data.

[0059] In one embodiment, the method for obtaining the ambient temperature coefficient includes: obtaining the ambient temperature, the reference temperature for oil performance evaluation, the running time of the engine in a set temperature environment, and the fourth correction coefficient; determining the ambient temperature coefficient according to the ambient temperature, the reference temperature, the running time, and the fourth correction coefficient.

[0060] The ambient temperature coefficient is represented by , and it affects the oil change cycle in a linear form based on the temperature of the high-temperature environment and the running time of the engine in the high-temperature environment. The formula is as follows: (3) In formula (3), is the ambient temperature, is the reference temperature, usually the reference temperature for oil performance evaluation; among them, the reference temperature can be 20 - 30 °C. is the running time of the engine in the high-temperature environment; among them, the high-temperature environment refers to the temperature exceeding the set temperature threshold. is the fourth correction coefficient, used to represent the linear degree of the influence of temperature and time on the oil change cycle. The fourth correction coefficient is the average experimental parameter obtained by fitting through multiple groups of experiments. After testing the degree of oil deterioration of the engine at regular intervals after the engine runs stably for a certain time or mileage at multiple sets of temperatures (such as ambient temperatures 20, 30, 40, 45, 50) in different temperature environments. The ambient temperature coefficient is represented by is the value in the result calculated by formula (3).

[0061] In one embodiment, the influencing factors for engine oil change include a first influencing factor and a second influencing factor for engine oil change. Determining the target engine oil change cycle according to the influencing factors for engine oil change and the basic engine oil change cycle includes: If the service life of the air filter exceeds the replacement cycle of the air filter, the target engine oil change cycle is determined according to the first influencing factor for engine oil change and the basic engine oil change cycle. The first influencing factor for engine oil change includes at least one of an environmental temperature coefficient, an engine intensification degree influence coefficient, a first engine oil change influence coefficient, a second engine oil change influence coefficient, and an air quality influence coefficient. If the service life of the air filter does not exceed the replacement cycle of the air filter, the target engine oil change cycle is determined according to the second influencing factor for engine oil change and the basic engine oil change cycle. The second influencing factor for engine oil change includes at least one of an environmental temperature coefficient, an engine intensification degree influence coefficient, a first engine oil change influence coefficient, and a second engine oil change influence coefficient.

[0062] The air filter itself does not directly participate in the operation of the engine oil, but its condition affects the contamination rate of the engine oil and engine wear, thereby indirectly shortening or prolonging the engine oil change cycle. That is to say, there is an important correlation between the replacement of the air filter and the engine oil change cycle. If the air filter is replaced in a timely manner when it expires, it is considered that the air quality entering the engine is qualified and has no impact on the engine oil change. If it is not replaced in a timely manner, it is considered that the air quality entering the engine deteriorates, and there should be a penalty mechanism for the engine oil change cycle, and the air quality influence coefficient should be used as an influencing factor for engine oil change. Based on this, when reminding of engine oil change, it is judged whether the air filter has expired. For example, it is judged whether the service life of the air filter exceeds the replacement cycle of the air filter. If the service life of the air filter does not exceed the replacement cycle of the air filter, it means that the air quality entering the engine is qualified and has no impact on the engine oil change. At this time, according to the environmental temperature coefficient , the engine intensification degree influence coefficient , the first engine oil change influence coefficient , the second engine oil change influence coefficient k and the basic engine oil change cycle, the target engine oil change cycle is determined .

[0063] For example, when the influencing factor for engine oil change includes the environmental temperature coefficient , ; when the influencing factor for engine oil change includes the engine intensification degree influence coefficient , ; when the influencing factor for engine oil change includes the first engine oil change influence coefficient , ; when the influencing factor for engine oil change includes the second engine oil change influence coefficient When .

[0064] For example, when the influencing factors for engine oil change include the environmental temperature coefficient and the engine enhancement degree influencing coefficient When ; when the influencing factors for engine oil change include the engine enhancement degree influencing coefficient and the first engine oil change influencing coefficient When ; when the influencing factors for engine oil change include the engine enhancement degree influencing coefficient and the second engine oil change influencing coefficient When ; when the influencing factors for engine oil change include the environmental temperature coefficient and the first engine oil change influencing coefficient When ; when the influencing factors for engine oil change include the environmental temperature coefficient and the second engine oil change influencing coefficient , ; when the influencing factors for engine oil change include the first engine oil change influencing coefficient and the second engine oil change influencing coefficient When .

[0065] For example, when the influencing factors for engine oil change include the environmental temperature coefficient and the engine enhancement degree influencing coefficient and the first engine oil change influencing coefficient When ; when the influencing factors for engine oil change include the engine enhancement degree influencing coefficient and the first engine oil change influencing coefficient and the second engine oil change influencing coefficient When ; when the influencing factors for engine oil change include the environmental temperature coefficient and the first engine oil change influencing coefficient and the second engine oil change influencing coefficient k When .

[0066] For example,when the influencing factors for engine oil change include the environmental temperature coefficient and the engine enhancement degree influencing coefficient and the first engine oil change influencing coefficient and the second engine oil change influencing coefficient When .<y

[0067] When reminding of engine oil change, it is necessary to judge whether the air filter has expired. For example, judge whether the service life of the air filter exceeds the replacement cycle of the air filter. If the service life of the air filter exceeds the replacement cycle of the air filter, it means that the air quality entering the engine is unqualified, which will affect the engine oil change. At this time, according to the ambient temperature coefficient 、the influence coefficient of engine strengthening degree 、the first engine oil change influence coefficient 、the second engine oil change influence coefficient k at least one of them, the basic engine oil change cycle 、the air quality influence coefficient to determine the target engine oil change cycle . At this time, the target engine oil change cycle needs to have a penalty mechanism. On the basis that the service life of the air filter does not exceed the replacement cycle of the air filter, multiply by the air quality influence coefficient .

[0068] The air quality influence coefficient is related to the air quality. The air quality is represented by PM2.5. PM2.5 particles will enter the engine interior, increase the pollution degree of the engine oil, and accelerate the oxidation and deterioration of the engine oil. In an environment with a high PM2.5 concentration, the engine oil change cycle may need to be shortened. Assume there is a threshold , when the PM2.5 concentration exceeds this threshold, the engine oil change cycle needs to be shortened. A linear or non-linear function can be used to represent this relationship, that is, the air quality influence coefficient. For example, use a simple linear attenuation function to represent:

[0069] Among them, represents the air quality influence coefficient, which is related to the concentration of fine particles in the air; is a constant, indicating the proportion of the shortening of the engine oil change cycle when the PM2.5 concentration increases by a certain amount. It can be obtained by fitting multiple groups of data tested in environments with different PM2.5 concentrations and the engine oil change situation. is the value in the calculation result.

[0070] In an embodiment, the engine oil change influencing factors include the first engine oil change influencing factor and the second engine oil change influencing factor. Determining the target engine oil change cycle according to the engine oil change influencing factors and the basic engine oil change cycle includes: Obtain the first engine oil change cycle, the second engine oil change cycle, the third engine oil change cycle, and the fourth engine oil change cycle; wherein, the first engine oil change cycle is determined based on the ambient temperature coefficient; the second engine oil change cycle is determined according to the first engine oil change influence coefficient, the third engine oil change cycle is determined according to the second engine oil change influence coefficient, and the fourth engine oil change cycle is determined according to the first engine oil change influencing factors and the basic engine oil change cycle. The first engine oil change influencing factors include at least one of the ambient temperature coefficient, the engine strengthening degree influence coefficient, the first engine oil change influence coefficient, the second engine oil change influence coefficient, and the air quality influence coefficient; use the minimum value among the first engine oil change cycle, the second engine oil change cycle, the third engine oil change cycle, and the fourth engine oil change cycle as the target engine oil change cycle.

[0071] Among them, the first engine oil change cycle is represented by ; ; The second engine oil change cycle is represented by ; ; The third engine oil change cycle is represented by ; represents the engine oil change cycle under ideal conditions (i.e., each time the engine completes warm-up); The fourth engine oil change cycle is represented by ; it is determined according to the basic engine oil change cycle and the ambient temperature coefficient , the engine strengthening degree influence coefficient , the first engine oil change influence coefficient , the second engine oil change influence coefficient k to determine the target engine oil change cycle among at least one of them . The specific manifestation form of the target engine oil change cycle will not be elaborated here. One can refer to the engine oil change cycle corresponding to when the service life of the air filter in the foregoing embodiments does not exceed the replacement cycle of the air filter.

[0072] After obtaining the first engine oil change cycle, the second engine oil change cycle, the third engine oil change cycle, and the fourth engine oil change cycle, compare the first engine oil change cycle, the second engine oil change cycle, the third engine oil change cycle, and the fourth engine oil change cycle, and use the minimum value among the first engine oil change cycle, the second engine oil change cycle, the third engine oil change cycle, and the fourth engine oil change cycle as the target engine oil change cycle.

[0073] When the engine oil service life (date days or mileage) , trigger the replacement reminder of the engine oil in the vehicle machine system.

[0074] In one embodiment, the influencing factors for engine oil change include a first influencing factor for engine oil change and a second influencing factor for engine oil change. Determining the target engine oil change period according to the influencing factors for engine oil change and the basic engine oil change period includes: Obtain a first engine oil change period, a second engine oil change period, a third engine oil change period, and a fourth engine oil change period; wherein, the first engine oil change period is determined based on an environmental temperature coefficient; the second engine oil change period is determined according to a first influencing coefficient for engine oil change, the third engine oil change period is determined according to a second influencing coefficient for engine oil change, the fourth engine oil change period is determined according to the second influencing factor for engine oil change and the basic engine oil change period, and the second influencing factor for engine oil change includes at least one of: an environmental temperature coefficient, an engine strengthening degree influencing coefficient, a first influencing coefficient for engine oil change, and a second influencing coefficient for engine oil change; take the minimum value among the first engine oil change period, the second engine oil change period, the third engine oil change period, and the fourth engine oil change period as the target engine oil change period.

[0075] Wherein, the first engine oil change period is represented by and .

[0076] The second engine oil change period is represented by and .

[0077] The third engine oil change period is represented by and , represents the engine oil change period under ideal conditions (i.e., each time the engine completes warm-up).

[0078] The fourth engine oil change period is represented by and is determined according to the environmental temperature coefficient , the engine strengthening degree influencing coefficient , the first influencing coefficient for engine oil change , the second influencing coefficient for engine oil change among at least one of them, the basic engine oil change period , the air quality influencing coefficient to determine the target engine oil change period . The specific manifestation form of the target engine oil change period will not be elaborated here, and reference can be made to the engine oil change period corresponding to when the service life of the air filter exceeds the replacement period of the air filter in the foregoing embodiment.

[0079] After obtaining the first engine oil change cycle, the second engine oil change cycle, the third engine oil change cycle, and the fourth engine oil change cycle, compare the first engine oil change cycle, the second engine oil change cycle, the third engine oil change cycle, and the fourth engine oil change cycle, and use the minimum value among the first engine oil change cycle, the second engine oil change cycle, the third engine oil change cycle, and the fourth engine oil change cycle as the target engine oil change cycle.

[0080] When the engine oil usage period (date days or mileage) is reached, a reminder to change the engine oil in the in-vehicle system is triggered.

[0081] In one embodiment, the method for obtaining the replacement cycle of the air filter includes: obtaining the basic air filter replacement cycle; determining the replacement cycle of the air filter according to the basic air filter replacement cycle and the air quality influence coefficient.

[0082] Generally, the replacement cycle of the air filter is related to the driving mileage and time. The replacement cycle of the air filter can be expressed as: , represents the basic air filter replacement cycle. When the usage period (date days or mileage) of the air filter is reached, a reminder to replace the air filter is triggered.

[0083] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0084] Figure 3 is a block diagram of a vehicle maintenance reminder device according to an embodiment of the present application. As Figure 3 shown, a vehicle maintenance reminder device includes: A factor acquisition module 310, configured to acquire engine oil change influencing factors, where the engine oil change influencing factors include at least one of the following: an environmental temperature coefficient, an engine strengthening degree influence coefficient, a first engine oil change influence coefficient, and a second engine oil change influence coefficient; the engine strengthening degree influence coefficient is determined based on the engine speed and the engine load; the first engine oil change influence coefficient is determined based on the number of engine starts and stops; the second engine oil change influence coefficient is determined based on the warm-up temperature and the actual shutdown temperature, where the warm-up temperature represents the water temperature required for the engine to reach the normal working state, and the actual shutdown temperature represents the actual water temperature when the engine shuts down; the filter replacement cycle includes the air filter replacement cycle or / and the air conditioner filter replacement cycle; A cycle determination module 320, configured to determine a target engine oil change cycle according to the engine oil change influencing factors and the basic engine oil change cycle to implement a reminder for engine oil change.

[0085] It should be noted that the vehicle maintenance reminder device provided in the above embodiments and the vehicle maintenance reminder method provided in the above embodiments belong to the same concept. The specific manners in which each module and unit perform operations have been described in detail in the method embodiments, and will not be elaborated here. In practical applications, the vehicle maintenance reminder device provided in the above embodiments may, according to needs, allocate the above functions to different functional modules, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above. This is not limited herein either.

[0086] An embodiment of the present application further provides a vehicle maintenance reminder device, including: one or more processors; and a memory for storing one or more programs, which, when executed by the one or more processors, cause the memory to implement the vehicle maintenance reminder method in the above embodiments.

[0087] An embodiment of the present application further provides one or more machine-readable media, on which instructions are stored, which, when executed by one or more processors, cause the processors to execute the vehicle maintenance reminder method in the above embodiments.

[0088] Figure 4 The structural diagram of a computer system suitable for implementing the memory of the embodiments of the present application is shown. It should be noted that Figure 4 The computer system of the memory shown is only an example and should not impose any limitations on the functions and usage scope of the embodiments of the present application.

[0089] As Figure 4 shown, the computer system 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 402 or the program loaded from the storage part into the random access memory (RAM) 403, such as executing the method in the above embodiments. In the RAM, various programs and data required for system operation are also stored. The CPU 401, ROM 402, and RAM 403 are connected to each other through a bus 404. The input / output (I / O) interface 405 is also connected to the bus 404.

[0090] The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, etc.; an output section 407 including, for example, a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface 405 as required. A removable medium 411 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is installed on the drive 410 as required so that a computer program read therefrom can be installed into the storage section 408 as required.

[0091] Specifically, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product including a computer program carried on a computer-readable medium, the computer program including a computer program for executing the vehicle maintenance reminder method described in the foregoing embodiments. In such an embodiment, the computer program can be downloaded and installed from a network via the communication section, and / or installed from the removable medium 411. When the computer program is executed by a central processing unit (CPU) 401, various functions defined in the system of the present application are executed.

[0092] It should be noted that the computer-readable medium shown in the embodiments of the present application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM) 403, a read-only memory (ROM) 402, an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable computer program. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium can be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0093] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. Among them, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and the above module, program segment, or part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram or flowchart, and the combination of blocks in the block diagram or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0094] The units involved in the embodiments described in this application can be implemented in software or in hardware, and the described units can also be provided in a processor. Among them, the names of these units do not constitute a limitation to the units themselves in certain cases.

[0095] Another aspect of this application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor of a computer, the computer is made to execute the vehicle maintenance reminder method as described above. The computer-readable storage medium may be included in the memory described in the above embodiments, or may exist separately without being assembled into the memory.

[0096] Another aspect of this application also provides a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the vehicle maintenance reminder method provided in the above various embodiments.

[0097] The above embodiments are only used to exemplarily illustrate the principles and effects of this application, rather than to limit this application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in this application should still be covered by the claims of this application.

Claims

1. A vehicle maintenance reminder method, characterized in that, The vehicle maintenance reminder method includes: Obtaining oil change influencing factors, where the oil change influencing factors include at least one of the following: ambient temperature coefficient, engine intensification degree influence coefficient, first oil change influence coefficient, second oil change influence coefficient; the engine intensification degree influence coefficient is determined based on the engine speed and engine load; the first oil change influence coefficient is determined based on the number of engine starts and stops; the second oil change influence coefficient is determined based on the warm-up temperature and the actual shutdown temperature, where the warm-up temperature represents the water temperature required for the engine to reach the normal working state, and the actual shutdown temperature represents the actual water temperature when the engine shuts down; Determining the target oil change cycle according to the oil change influencing factors and the basic oil change cycle to achieve the reminder of oil change.

2. The vehicle maintenance reminder method according to claim 1, wherein The method for obtaining the engine intensification degree influence coefficient includes: Obtaining the time ratios of the engine running in different speed intervals and load intervals, the weights corresponding to the speed intervals and load intervals, and the first correction coefficient; the speed intervals of the engine are obtained by dividing the engine speed, and each speed interval corresponds to a weight, and the load intervals of the engine are obtained by dividing the engine load, and each load interval corresponds to a weight; Determining the engine intensification degree influence coefficient according to the time ratios of the engine running in different speed intervals and load intervals, the weights corresponding to the speed intervals and load intervals, and the first correction coefficient.

3. The vehicle maintenance reminder method according to claim 1, wherein, The method for obtaining the first oil change influence coefficient includes: Obtaining the number of engine starts and stops and the second correction coefficient; Determining the first oil change influence coefficient based on the second correction coefficient and the number of engine starts and stops.

4. The vehicle maintenance reminder method according to claim 1, characterized in that The method for obtaining the second oil change influence coefficient includes: Obtaining the warm-up temperature, the actual shutdown temperature, and the third correction coefficient; Determining the second oil change influence coefficient according to the difference between the warm-up temperature and the actual shutdown temperature and the third correction coefficient.

5. The vehicle maintenance reminder method according to claim 1, characterized in that, The method for obtaining the ambient temperature coefficient includes: Obtaining the ambient temperature, the reference temperature for oil performance evaluation, the running time of the engine in the set temperature environment, and the fourth correction coefficient; Determining the ambient temperature coefficient according to the ambient temperature, the reference temperature, the running time, and the fourth correction coefficient.

6. The vehicle maintenance reminder method according to claim 1, characterized in that, The oil change influencing factors include the first oil change influencing factor and the second oil change influencing factor. The determining the target oil change cycle according to the oil change influencing factors and the basic oil change cycle includes: If the service life of the air filter exceeds the replacement cycle of the air filter, then determine the target oil change cycle according to the first oil change influencing factors and the basic oil change cycle, where the first oil change influencing factors include at least one of the ambient temperature coefficient, the engine intensification degree influence coefficient, the first oil change influence coefficient, the second oil change influence coefficient, and the air quality influence coefficient; If the usage period of the air filter does not exceed the replacement period of the air filter, the target engine oil replacement period is determined according to the second engine oil replacement influencing factor and the basic engine oil replacement period, and the second engine oil replacement influencing factor includes at least one of an environmental temperature coefficient, an engine intensification degree influencing coefficient, a first engine oil replacement influencing coefficient, and a second engine oil replacement influencing coefficient.

7. The vehicle maintenance reminder method according to claim 6, characterized in that, The method for obtaining the replacement period of the air filter includes: Obtaining a basic air filter replacement period; Determining the replacement period of the air filter according to the basic air filter replacement period and the air quality influencing coefficient.

8. A vehicle maintenance reminder device, characterized in that, The vehicle maintenance reminder device includes: A factor acquisition module, configured to acquire engine oil replacement influencing factors, where the engine oil replacement influencing factors include at least one of the following: an environmental temperature coefficient, an engine intensification degree influencing coefficient, a first engine oil replacement influencing coefficient, and a second engine oil replacement influencing coefficient; the engine intensification degree influencing coefficient is determined based on the engine speed and the engine load; the first engine oil replacement influencing coefficient is determined based on the number of engine starts and stops; the second engine oil replacement influencing coefficient is determined based on the warm-up temperature and the actual shutdown temperature, the warm-up temperature represents the water temperature required for the engine to reach the normal working state, and the actual shutdown temperature represents the actual water temperature when the engine shuts down; the filter replacement period includes an air filter replacement period or / and an air-conditioning filter replacement period; A period determination module, configured to determine the target engine oil replacement period according to the engine oil replacement influencing factors and the basic engine oil replacement period, so as to implement a reminder for engine oil replacement.

9. A vehicle maintenance reminder device, characterized in that, including: One or more processors; and A memory, configured to store one or more programs, and when the one or more programs are executed by the one or more processors, the memory implements the vehicle maintenance reminder method according to any one of claims 1-7.

10. A machine-readable medium, characterized in that, Instructions are stored thereon, and when executed by one or more processors, cause the processors to execute the vehicle maintenance reminder method according to any one of claims 1-7.

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