Monitoring method for engine oil maintenance cycle of vehicle, vehicle controller and vehicle

Abstract

The present invention provides a monitoring method for the oil maintenance cycle of a vehicle, a vehicle controller and a vehicle, wherein the method comprises: entering the current maintenance cycle, determining the oil instant consumption data corresponding to the sampling time according to the real-time driving data information obtained at the sampling time and the preset engine calibration parameters within the current maintenance cycle, and calculating the oil instant consumption adjustment coefficient according to the real-time adjustment coefficient determination information; determining the oil instant consumption threshold corresponding to the sampling time according to the oil instant consumption adjustment coefficient, the preset redundancy coefficient, and the preset oil use limit; judging whether the vehicle reaches the preset oil maintenance condition according to the oil instant consumption data corresponding to the sampling time and the comparison result of the oil instant consumption threshold; and when the vehicle reaches the oil maintenance condition, the vehicle controller of the vehicle generates and sends the reminder information of oil maintenance. This scheme can accurately predict the time of changing oil, reduce the maintenance cost of consumers, and ensure driving safety.

Description

Technical Field

[0001] The invention relates to the technical field of engine oil maintenance cycle prediction, and in particular to a vehicle oil maintenance cycle monitoring method, a vehicle controller and a vehicle. Background Art

[0002] Vehicle maintenance refers to the preventive work of regularly inspecting, cleaning, replenishing, lubricating, adjusting or replacing certain parts of the vehicle. It can play an important role in keeping the vehicle clean and tidy, in normal technical condition, eliminating hidden dangers, preventing failures, slowing down the deterioration process, and extending the service life. Among them, engine oil maintenance is one of the important tasks of vehicle maintenance. Engine oil maintenance means that when the vehicle has traveled a certain mileage, the engine oil needs to be replaced to ensure that the engine oil can normally lubricate and reduce wear, cool and reduce temperature, seal and prevent leakage, clean and clean, prevent corrosion and rust, and buffer and reduce shock.

[0003] The traditional oil maintenance method is like the patent document CN203929565U, which performs oil maintenance based on the vehicle's mileage and oil usage time, that is, after reaching a certain mileage or the oil is used for a certain period of time, the vehicle controller will send a reminder message to remind the user to perform maintenance in time. However, this method is more accurate for traditional fuel vehicles.

[0004] With the advancement of the national energy conservation and emission reduction policy, the hybrid vehicle market has gradually expanded. Since the actual working conditions and access level of hybrid vehicle engines are very different from those of traditional fuel vehicles, if the hybrid vehicle is maintained with oil like a fuel vehicle, the maintenance cost will be high. At present, the mainstream technical solutions on the market include oil-electric hybrid system (HEV), plug-in hybrid system (PHEV), extended-range hybrid system (REEV) and 48V hybrid system. Under each hybrid vehicle technical solution, the engine working mode, operating conditions, whether it participates in driving, etc. are different. Since the main driving force of hybrid vehicles generally comes from the motor, the engine is used as an auxiliary drive or power generation, so in general, the operation of the hybrid vehicle engine has the following characteristics: first, during the vehicle driving process, the engine working time is relatively short; second, the engine working conditions are simple, and the speed load is relatively low; third, during the driving process, the engine is often accompanied by frequent start-stop conditions; fourth, the customer's driving conditions, charging timeliness and other usage habits have a great impact on the actual running time of the hybrid vehicle engine. Therefore, if the oil maintenance cycle of a hybrid vehicle is simply extended in order to reduce the oil maintenance cost of the hybrid vehicle, the oil maintenance cycle may be inaccurately determined, thereby affecting the driving safety of the vehicle.

[0005] In fact, traditional fuel vehicles only perform oil maintenance based on mileage and oil usage time, and there is also the problem that the maintenance cycle cannot be accurately determined. Summary of the invention

[0006] The purpose of the present invention is to solve the problem in the prior art that oil maintenance is performed only based on mileage and oil usage time, which makes the oil maintenance cycle inaccurately determined, thereby affecting vehicle driving safety.

[0007] To solve the above problems, an embodiment of the present invention discloses a method for monitoring the oil maintenance cycle of a vehicle, comprising the following steps:

[0008] S1: Entering the current maintenance cycle, clearing the driving data information and adjustment coefficient determination information of the vehicle in the previous maintenance cycle; and periodically acquiring the real-time driving data information and real-time adjustment coefficient determination information of the vehicle at a first time interval of a preset duration during the current maintenance cycle; determining the real-time oil consumption data corresponding to the sampling time according to the real-time driving data information acquired at the sampling time and the preset engine calibration parameters, and calculating the real-time oil consumption adjustment coefficient according to the real-time adjustment coefficient determination information;

[0009] S2: determining the instantaneous oil consumption threshold corresponding to the sampling time according to the instantaneous oil consumption adjustment coefficient, the preset redundancy coefficient, and the preset oil usage limit;

[0010] S3: judging whether the vehicle meets the preset oil maintenance condition according to the comparison result of the oil instant consumption data corresponding to the sampling time and the oil instant consumption threshold value corresponding to the sampling time;

[0011] If yes, execute step S4;

[0012] If not, continue to determine whether the vehicle meets the oil maintenance conditions;

[0013] S4: The vehicle controller of the vehicle generates and sends reminder information for oil maintenance.

[0014] With the above scheme, since the real-time driving data information and the real-time adjustment coefficient determination information will change with the sampling time, the calculated real-time oil consumption data and real-time oil consumption threshold are also different for different sampling times. The real-time oil consumption data and real-time oil consumption threshold at different sampling times better reflect the environment, vehicle condition and driving habits of the vehicle at the current sampling time. Therefore, the oil maintenance cycle determined based on the real-time oil consumption data and the real-time oil consumption threshold is more in line with the current state of the vehicle and more accurate. Furthermore, since users can perform oil maintenance according to a more accurate oil maintenance cycle, the operating efficiency of the engine and the driving safety of the vehicle can be guaranteed, while the user's vehicle use cost can be reduced.

[0015] According to another specific embodiment of the present invention, the method for monitoring the oil maintenance cycle of a vehicle disclosed in the embodiment of the present invention, in step S1, the real-time driving data information includes the average fuel consumption per 100 kilometers from the start time of the current maintenance cycle to the sampling time, and the total mileage of the vehicle; the preset engine calibration parameters include the maximum engine-to-fuel ratio; the real-time oil consumption data corresponding to the sampling time includes at least one of the real-time oil consumption from the start time of the current maintenance cycle to the sampling time, the total mileage of the vehicle, and the oil usage time; and the real-time oil consumption data corresponding to the sampling time is determined according to the acquired real-time driving data information and the preset engine calibration parameters, including: calculating the real-time oil consumption according to the average fuel consumption per 100 kilometers, the total mileage of the vehicle, and the maximum engine-to-fuel ratio of the engine; wherein the vehicle mileage from the start time of the current maintenance cycle to the sampling time is taken as the total vehicle mileage; or the elapsed time from the start time of the current maintenance cycle to the sampling time is taken as the oil usage time.

[0016] By adopting the above scheme, the instant oil consumption is calculated according to the average fuel consumption per 100 kilometers, the total mileage of the vehicle and the maximum engine-fuel ratio. The wheel speed sensor, fuel consumption meter, etc. already on the vehicle can be used for accurate calculation, without the need for new sensors, thus reducing calculation and manufacturing costs. The average fuel consumption per 100 kilometers can represent driving habits and the degree of hybridization of the vehicle engine, so that the calculated instant oil consumption is more in line with the characteristics of different driving habits and different hybrid schemes, thereby making the final determined oil maintenance cycle more accurate.

[0017] According to another specific embodiment of the present invention, the method for monitoring the oil maintenance cycle of a vehicle disclosed in the embodiment of the present invention, in step S1, the instant adjustment coefficient determination information includes the average vehicle speed, the average ambient temperature, the single average driving mileage, and the average daily vehicle use frequency from the start time of the current maintenance cycle to the sampling time; and the instant oil consumption adjustment coefficient is calculated based on the instant adjustment coefficient determination information, including: determining the instant vehicle speed adjustment coefficient, the instant temperature adjustment coefficient, the instant driving mileage adjustment coefficient, and the instant vehicle use frequency adjustment coefficient according to the average vehicle speed, the average ambient temperature, the single average driving mileage, and the average daily vehicle use frequency, respectively; determining the instant oil consumption adjustment coefficient according to the instant vehicle speed adjustment coefficient, the instant temperature adjustment coefficient, the instant driving mileage adjustment coefficient, and the instant vehicle use frequency adjustment coefficient.

[0018] By adopting the above scheme, since the service life of the engine oil is affected by the actual use environment and driving habits of the vehicle, the engine oil instant consumption adjustment coefficient is determined according to parameters closely related to the use environment and driving habits, such as the average vehicle speed, average ambient temperature, average single mileage, and average daily vehicle use frequency, and the engine oil instant consumption threshold is determined based on the engine oil instant consumption adjustment coefficient. The engine oil instant consumption threshold can be differentially corrected, making the determined engine oil instant consumption threshold more accurate.

[0019] According to another specific embodiment of the present invention, the method for monitoring the oil maintenance cycle of a vehicle disclosed in the embodiment of the present invention calculates the oil instant consumption adjustment coefficient according to the following formula:

[0020] λ=α*β*γ*δ

[0021] Wherein, λ is the instant oil consumption adjustment coefficient, α is the instant vehicle speed adjustment coefficient, β is the instant temperature adjustment coefficient, γ is the instant mileage adjustment coefficient, and δ is the instant vehicle use frequency adjustment coefficient; wherein, the instant vehicle speed adjustment coefficient increases first and then decreases with the increase of the average vehicle speed, and when the average vehicle speed increases to the intermediate vehicle speed threshold, the instant vehicle speed adjustment coefficient increases to the maximum, and when the average vehicle speed continues to increase from the intermediate vehicle speed threshold, the instant vehicle speed adjustment coefficient decreases from the maximum to the minimum, wherein, the average vehicle speed ranges from 10km / h to 120km / h, the intermediate vehicle speed threshold ranges from 60km / h to 80km / h, and the instant vehicle speed adjustment coefficient ranges from 0.9 to 1; the instant temperature adjustment coefficient increases with the increase of the average ambient temperature, and the average ambient temperature ranges from -25 ℃ to -15℃, the range of the instant temperature adjustment coefficient is 0.9 to 1; the instant mileage adjustment coefficient first increases and then decreases with the decrease of the single average mileage, and when the single average mileage decreases to the intermediate mileage threshold, the instant mileage adjustment coefficient increases to the maximum, and when the single average mileage continues to decrease from the intermediate mileage threshold, the instant mileage adjustment coefficient decreases from the maximum to the minimum, wherein the single average mileage ranges from 0km to 10km, and the intermediate mileage threshold ranges from 3km to 10km; the range of the instant mileage adjustment coefficient is 0.9 to 1; the instant vehicle use frequency adjustment coefficient increases with the decrease of the average daily vehicle use frequency, the average daily vehicle use frequency ranges from 4 times to 10 times, and the range of the instant vehicle use frequency adjustment coefficient is 0.9 to 1.

[0022] According to another specific embodiment of the present invention, in the method for monitoring the oil maintenance cycle of a vehicle disclosed in the embodiment of the present invention, in step S2, the preset oil use limit value includes any one of an oil consumption limit value, a mileage limit value, and an oil use limit time; the oil instant consumption threshold value corresponding to the sampling moment includes a fuel consumption threshold value, an instant mileage threshold value, and an instant use time threshold value; and the oil instant consumption threshold value corresponding to the sampling moment is determined according to the oil instant consumption adjustment coefficient, the preset redundancy coefficient, and the preset oil use limit value, including: determining the fuel consumption threshold value according to the oil consumption limit value and the preset redundancy coefficient;

[0023] The instant mileage threshold is determined according to the mileage limit value, the instant oil consumption adjustment coefficient, and the preset redundancy coefficient; or the instant use time threshold is determined according to the oil use limit time, the instant oil consumption adjustment coefficient, and the preset redundancy coefficient.

[0024] According to another specific embodiment of the present invention, the method for monitoring the oil maintenance cycle of a vehicle disclosed in the embodiment of the present invention calculates the fuel consumption threshold value according to the following formula:

[0025] V0=α*Vmax

[0026] Wherein, V0 is the fuel consumption threshold, α is the redundancy coefficient, Vmax is the oil consumption limit value, and the oil consumption limit value is inversely proportional to the vehicle displacement, wherein the vehicle displacement ranges from 0.8L to 4.0L, and the oil consumption limit value ranges from 0.8L to 1.2L; and

[0027] The instant mileage threshold is calculated according to the following formula:

[0028] S0=α*Smax*λ

[0029] Wherein, S0 is the instant mileage threshold, α is the redundancy coefficient, λ is the instant oil consumption adjustment coefficient, Smax is the mileage limit value, and the mileage limit value is inversely proportional to the mixing degree of the vehicle engine, wherein the engine mixing degree ranges from 20% to 100%, and the mileage limit value ranges from 10,000 kilometers to 20,000 kilometers; and

[0030] The instant usage time threshold is calculated according to the following formula:

[0031] T0=α*Tmax*λ

[0032] Among them, T0 is the instant use time threshold, α is the redundancy coefficient, λ is the instant oil consumption adjustment coefficient, Tmax is the oil use limit time, and the oil use limit time ranges from 10 months to 14 months.

[0033] By adopting the above scheme, since the vehicle displacement is taken into account when determining the oil consumption limit value, the economy of vehicle maintenance can be improved under the premise of ensuring vehicle driving safety. In addition, the fuel consumption threshold is calculated according to the redundancy coefficient, leaving a certain safety margin, which can prevent the problem of reduced driving safety caused by the driver being unable to perform maintenance immediately after the vehicle controller issues a reminder. Since the engine's mixing degree is taken into account when determining the mileage limit value, the economy of vehicle maintenance can be improved under the premise of ensuring vehicle driving safety. In addition, the instant mileage threshold is calculated according to the redundancy coefficient, leaving a certain safety margin, which can prevent the problem of reduced driving safety caused by the driver being unable to perform maintenance immediately after the vehicle controller issues a reminder. In addition, the instant mileage threshold is calculated according to the instant fuel consumption adjustment coefficient. Since the instant fuel consumption adjustment coefficient can well represent the current working conditions, driving environment, driving habits, etc. of the vehicle, the calculated instant mileage threshold can be made more accurate. The instant use time threshold is calculated according to the redundancy coefficient, leaving a certain safety margin, which can prevent the problem of reduced driving safety caused by the driver being unable to perform maintenance immediately after the vehicle controller issues a reminder. In addition, the instantaneous usage time threshold is calculated based on the instantaneous fuel consumption adjustment coefficient. Since the instantaneous fuel consumption adjustment coefficient can well represent the vehicle's current operating conditions, driving environment, driving habits, etc., the calculated instantaneous usage time threshold can be made more accurate.

[0034] According to another specific embodiment of the present invention, in the method for monitoring the oil maintenance cycle of a vehicle disclosed in the embodiment of the present invention, in step S3, when any of the following conditions is met, it is judged that the vehicle has reached a preset oil maintenance condition: the instantaneous oil consumption is greater than or equal to the oil consumption threshold; the total mileage of the vehicle is greater than or equal to the instantaneous mileage threshold; the oil usage time is greater than or equal to the instantaneous usage time threshold.

[0035] By adopting the above solution, the user can be reminded to change the engine oil in time, thereby improving the driving safety of the vehicle.

[0036] According to another specific embodiment of the present invention, the method for monitoring the oil maintenance cycle of a vehicle disclosed in the embodiment of the present invention calculates the instantaneous oil consumption according to the following formula:

[0037]

[0038] Wherein, V1 is the instantaneous oil consumption, V2 is the average fuel consumption per 100 kilometers, S is the total mileage of the vehicle, and R is the maximum engine-fuel ratio of the engine; and in step S4, the vehicle controller sends an oil maintenance reminder message to the vehicle's on-board display screen; and after step S4, it also includes: periodically obtaining the oil quantity information and oil product information in the oil pan of the vehicle at a second time interval of a preset time length, and judging whether the vehicle has undergone oil maintenance according to the oil quantity information and oil product information;

[0039] If yes, the driving data information and adjustment coefficient determination information of the current maintenance cycle are cleared, and the next maintenance cycle is entered;

[0040] If not, return to step S4; and, in step S1, the first time interval is within the time range of 1 day to 7 days; the second time interval is within the time range of 2 days to 10 days; wherein, within the same maintenance cycle, the duration of the first time interval is less than or equal to the duration of the second time interval; the preset redundancy coefficient ranges from 0.7 to 0.9.

[0041] With the above scheme, since the period for judging whether the vehicle has reached the preset oil maintenance condition is equal to or shorter than the period for judging whether the vehicle has undergone oil maintenance, the problem of invalid judgment caused by delay in data collection can be avoided.

[0042] An embodiment of the present invention discloses a vehicle controller, comprising: a memory, the memory is used to store a control program; a processor, the processor executes the steps of the vehicle oil maintenance cycle monitoring method described in any of the above embodiments when processing the control program.

[0043] An embodiment of the present invention discloses a vehicle, including a vehicle controller as described in the above embodiment.

[0044] The beneficial effects of the present invention are:

[0045] The vehicle oil maintenance cycle monitoring method provided by the present invention can timely remind consumers to maintain the engine, especially the engine of a hybrid vehicle, so as to ensure safe use; and can accurately predict the oil change time, reduce consumer maintenance costs, and improve satisfaction. In addition, for vehicles with different driving habits and different technical solutions, especially hybrid vehicles, a unified oil maintenance cycle monitoring method can be used, reducing development costs. This solution can also improve the accuracy of oil maintenance cycle prediction for traditional fuel vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a flow chart of a method for monitoring a vehicle oil maintenance cycle provided by an embodiment of the present invention;

[0047] Figure 2 It is another flow chart of the method for detecting the oil maintenance period of a vehicle provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The following specific embodiments illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this implementation. On the contrary, the purpose of introducing the invention in conjunction with the implementation is to cover other options or modifications that may extend based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0049] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0050] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0052] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0053] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0054] Embodiment 1:

[0055] In order to solve the problem that the prior art only performs oil maintenance based on mileage and oil usage time, which may lead to inaccurate determination of the oil maintenance cycle and thus affect vehicle driving safety, an embodiment of the present invention provides a method for monitoring the oil maintenance cycle of a vehicle. Figure 1 , the monitoring method comprises the following steps:

[0056] S1: Entering the current maintenance cycle, clearing the driving data information and adjustment coefficient determination information of the vehicle in the previous maintenance cycle; and periodically acquiring the real-time driving data information and real-time adjustment coefficient determination information of the vehicle at a first time interval of a preset duration during the current maintenance cycle; determining the real-time oil consumption data corresponding to the sampling time according to the real-time driving data information acquired at the sampling time and the preset engine calibration parameters, and calculating the real-time oil consumption adjustment coefficient according to the real-time adjustment coefficient determination information;

[0057] S2: determining the instantaneous oil consumption threshold corresponding to the sampling time according to the instantaneous oil consumption adjustment coefficient, the preset redundancy coefficient, and the preset oil usage limit;

[0058] S3: judging whether the vehicle meets the preset oil maintenance condition according to the comparison result of the oil instant consumption data corresponding to the sampling time and the oil instant consumption threshold value corresponding to the sampling time;

[0059] If yes, execute step S4;

[0060] If not, continue to determine whether the vehicle meets the oil maintenance conditions;

[0061] S4: The vehicle controller of the vehicle generates and sends reminder information for oil maintenance.

[0062] Specifically, in this embodiment, the criterion for determining whether to start a maintenance cycle is whether the vehicle has undergone oil maintenance, which can be generally understood as whether the vehicle has refilled its oil. If the vehicle has completed oil maintenance, then the vehicle has entered a new oil maintenance cycle, and when to perform the next maintenance needs to be determined based on the data of this maintenance.

[0063] In step S1 of the present method, after entering the current maintenance cycle, the relevant data of the previous maintenance cycle needs to be cleared, and only the relevant data of the current cycle is used to monitor the engine oil maintenance cycle, which can avoid the problem of inaccurate maintenance cycle determination caused by changes in driving habits, engine oil quality, vehicle environment, etc. between the current cycle and the previous cycle. In addition, the real-time driving data refers to the information related to driving habits and driving status corresponding to the current sampling time, and the real-time adjustment coefficient determination information refers to the information corresponding to the current sampling time for determining the real-time consumption adjustment coefficient. The real-time engine oil consumption data corresponding to the sampling time refers to the relevant data on the actual consumption of the engine oil at the sampling time.

[0064] More specifically, the first time interval is within the time range of 1 day to 7 days, for example, it can be 1 day, 3 and a half days, 7 days, or other time, and can be determined according to the frequency of use of the vehicle in the previous maintenance cycle. The higher the average daily frequency of use, the shorter the first time interval. For example, in the previous maintenance cycle, the average daily frequency of use is 3 times or more, then the real-time driving data information and the real-time adjustment coefficient determination information are collected once a day in the current maintenance cycle. If the average daily frequency of use is 1 time, the real-time driving data information and the real-time adjustment coefficient determination information are collected once every two days. If the average daily frequency of use is 0.5 times, that is, it is used once every two days, then the real-time driving data information and the real-time adjustment coefficient determination information can be collected once every five days. With this method, the length of the first time interval is determined according to the frequency of use of the vehicle in the previous maintenance cycle, and the calculation amount of the vehicle controller can be reduced as much as possible under the premise of ensuring the sampling accuracy.

[0065] Specifically, in step S2, the preset redundancy coefficient ranges from 0.7 to 0.9, for example, it can be 0.7, 0.78, 0.86, 0.9 or other values ​​within the range, and the oil usage limit value refers to the usage limit of the oil added in the current cycle under the premise of ensuring the normal driving of the vehicle. More specifically, the real-time driving data information and the real-time adjustment coefficient determination information are obtained by sensors arranged at various locations on the vehicle body and corresponding to the real-time driving data information and the real-time adjustment coefficient determination information. Each sensor is connected to the vehicle controller to send the real-time driving data information and the real-time adjustment coefficient determination information to the vehicle controller. After receiving the above information, the vehicle controller performs operations such as calculation, judgment, and generation of reminder information. It should be noted that the preset redundancy coefficient, the preset oil usage limit value, etc. are all calibrated in advance and stored in the vehicle controller.

[0066] With this method, since the real-time driving data information and the real-time adjustment coefficient determination information will change with the sampling time, the calculated real-time oil consumption data and real-time oil consumption threshold are also different for different sampling times. The real-time oil consumption data and real-time oil consumption threshold at different sampling times better reflect the environment, vehicle condition and driving habits of the vehicle at the current sampling time. Therefore, the oil maintenance cycle determined according to the real-time oil consumption data and the real-time oil consumption threshold is more in line with the current state of the vehicle and more accurate. Furthermore, since users can perform oil maintenance according to a more accurate oil maintenance cycle, the operating efficiency of the engine and the driving safety of the vehicle can be guaranteed, and the user's vehicle use cost can be reduced at the same time.

[0067] Further, in the monitoring method of the engine oil maintenance cycle of the vehicle according to the present invention, in step S1, the real-time driving data information includes the average fuel consumption per 100 kilometers from the start time of the current maintenance cycle to the sampling time, and the total mileage of the vehicle. The preset engine calibration parameters include the maximum engine-fuel ratio of the engine. The real-time engine oil consumption data corresponding to the sampling time includes at least one of the real-time engine oil consumption from the start time of the current maintenance cycle to the sampling time, the total mileage of the vehicle, and the engine oil use time. Specifically, the average fuel consumption per 100 kilometers can be calculated based on the data measured by the fuel consumption meter or the fuel consumption sensor, and the total mileage of the vehicle is calculated by the wheel speed measured by the tire radius and the wheel speed sensor. In addition, the average fuel consumption per 100 kilometers is related to the mixing degree of the vehicle's engine. The higher the mixing degree, the greater the average fuel consumption per 100 kilometers, and the lower the mixing degree, the smaller the average fuel consumption per 100 kilometers. More specifically, the maximum engine-fuel ratio refers to the ratio of the engine oil consumption to the fuel consumption, which is maintained within a certain fixed range, generally in the range of 0.03% to 0.12%, and is related to the mixing degree and the type of engine.

[0068] Furthermore, in the monitoring method of the oil maintenance cycle of the vehicle according to the present invention, the instant oil consumption data corresponding to the sampling time is determined according to the acquired instant driving data information and the preset engine calibration parameters, including: calculating the instant oil consumption according to the average fuel consumption per 100 kilometers, the total mileage of the vehicle, and the maximum engine-fuel ratio of the engine. Among them, the vehicle mileage from the start time of the current maintenance cycle to the sampling time is taken as the total mileage of the vehicle; or the elapsed time from the start time of the current maintenance cycle to the sampling time is taken as the oil use time. Specifically, the instant oil consumption is calculated according to the following formula:

[0069]

[0070] Among them, V1 is the instantaneous oil consumption, V2 is the average fuel consumption per 100 kilometers, S is the total mileage of the vehicle, and R is the maximum engine-fuel ratio. With this method, the instantaneous oil consumption is calculated according to the average fuel consumption per 100 kilometers, the total mileage of the vehicle, and the maximum engine-fuel ratio of the engine. The wheel speed sensor and fuel consumption meter already on the vehicle can be used for accurate calculation, without the need for adding new sensors, reducing the calculation and manufacturing costs, and the average fuel consumption per 100 kilometers can represent the driving habits and the hybrid degree of the vehicle engine, so that the calculated instantaneous oil consumption is more in line with the characteristics of different driving habits and different hybrid solutions, thereby making the final determined oil maintenance cycle more accurate.

[0071] Further, in the monitoring method of the oil maintenance cycle of the vehicle according to the present invention, in step S1, the information for determining the instant adjustment coefficient includes the average vehicle speed, average ambient temperature, single average driving mileage, and average vehicle use frequency per day from the start time of the current maintenance cycle to the sampling time. Among them, the average vehicle speed can be calculated from the information collected by the vehicle speed sensor, the average ambient temperature can be calculated from the information collected by the temperature sensor, the single average driving mileage is calculated based on the number of vehicle startups and the total driving mileage, and the average vehicle use frequency per day is calculated based on the number of vehicle startups.

[0072] Further, in the monitoring method of the oil maintenance cycle of the vehicle according to the present invention, the oil instant consumption adjustment coefficient is calculated according to the instant adjustment coefficient determination information, including: determining the instant vehicle speed adjustment coefficient, the instant temperature adjustment coefficient, the instant driving mileage adjustment coefficient, and the instant vehicle frequency adjustment coefficient according to the average vehicle speed, the average ambient temperature, the single average driving mileage, and the average vehicle use frequency per day; determining the oil instant consumption adjustment coefficient according to the instant vehicle speed adjustment coefficient, the instant temperature adjustment coefficient, the instant driving mileage adjustment coefficient, and the instant vehicle use frequency adjustment coefficient. With such a method, since the service life of the oil is affected by the actual use environment and driving habits of the vehicle, the oil instant consumption adjustment coefficient is determined according to the parameters closely related to the use environment and driving habits such as the average vehicle speed, the average ambient temperature, the single average driving mileage, and the average vehicle use frequency per day, and the oil instant consumption threshold is determined according to the oil instant consumption adjustment coefficient, and the oil instant consumption threshold can be differentially corrected, so that the determined oil instant consumption threshold is more accurate.

[0073] Furthermore, in the method for monitoring the oil maintenance cycle of the vehicle according to the present invention, the oil instant consumption adjustment coefficient is calculated according to the following formula:

[0074] λ=αβ*γ*δ

[0075] Among them, λ is the instant oil consumption adjustment coefficient, α is the instant vehicle speed adjustment coefficient, β is the instant temperature adjustment coefficient, γ is the instant mileage adjustment coefficient, and δ is the instant vehicle use frequency adjustment coefficient.

[0076] Specifically, as shown in Table 1 below, the instantaneous speed adjustment coefficient increases first and then decreases with the increase of the average speed, and when the average speed increases to the intermediate speed threshold, the instantaneous speed adjustment coefficient increases to the maximum, and when the average speed continues to increase from the intermediate speed threshold, the instantaneous speed adjustment coefficient decreases from the maximum to the minimum, wherein the average speed ranges from 10km / h to 120km / h, the intermediate speed threshold ranges from 60km / h to 80km / h, and the instantaneous speed adjustment coefficient ranges from 0.9 to 1. It should be noted that the intermediate speed threshold refers to the speed range corresponding to the maximum value of the instantaneous speed adjustment coefficient, which is a speed range located in the middle of the average speed range. As can be seen from Table 1 below, when the average speed is less than 40km / h, the instant speed adjustment coefficient is 0.9, when the average speed ranges from 40km / h to 60km / h, the instant speed adjustment coefficient is 0.95, and when the average speed ranges from 60km / h to 80km / h, that is, at the middle speed threshold, the instant speed adjustment coefficient is 1. When the average speed continues to increase to 80km / h to 120km / h, the instant speed adjustment coefficient is 0.95.

[0077] The instant temperature adjustment coefficient increases with the increase of the average ambient temperature. The average ambient temperature ranges from -25°C to -15°C, and the instant temperature adjustment coefficient ranges from 0.9 to 1. According to Table 1 below, when the average ambient temperature is not less than -15°C, the value of the instant temperature adjustment coefficient is 1; when the average ambient temperature is -15°C to -25°C, the value of the instant temperature adjustment coefficient is 0.95; when the average ambient temperature is not greater than -25°C, the value of the instant temperature adjustment coefficient is 0.9. It should be noted that in this embodiment, the range of the average ambient temperature is limited to -25°C to -15°C, and when the average ambient temperature is less than -25°C or greater than -15°C, the value of the instant temperature adjustment coefficient is the same as when it is equal to -25°C or equal to -15°C.

[0078] The instant driving mileage adjustment coefficient increases first and then decreases as the single average driving mileage decreases, and when the single average driving mileage decreases to the intermediate mileage threshold, the instant driving mileage adjustment coefficient increases to the maximum, and when the single average driving mileage continues to decrease from the intermediate mileage threshold, the instant driving mileage adjustment coefficient decreases from the maximum to the minimum, wherein the single average driving mileage ranges from 0km to 10km, the intermediate mileage threshold ranges from 3km to 10km; the instant driving mileage adjustment coefficient ranges from 0.9 to 1. It should be noted that the intermediate mileage threshold refers to the range of mileage corresponding to the maximum value of the instant driving mileage adjustment coefficient, which is the mileage range between the range of the single average driving mileage. Referring to Table 1 below, it can be seen that when the single average driving mileage is not less than 10km, the value of the instant driving mileage adjustment coefficient is 0.95; when the single average driving mileage is 3km to 10km, the value of the instant driving mileage adjustment coefficient is 1; when the single average driving mileage is not more than 3km, the value of the instant driving mileage adjustment coefficient is 0.95.

[0079] The adjustment coefficient of the instant car use frequency increases as the average daily car use frequency decreases. The average daily car use frequency ranges from 4 to 10 times, and the adjustment coefficient of the instant car use frequency ranges from 0.9 to 1. Referring to Table 1 below, when the average daily car use frequency is not less than 10 times, the value of the instant car use frequency adjustment coefficient is 0.9; when the average daily car use frequency is 4 to 10 times, the value of the instant car use frequency adjustment coefficient is 0.95; when the average daily car use frequency is not more than 4 times, the value of the instant car use frequency adjustment coefficient is 1.

[0080] It should be noted that, in this embodiment, the value ranges of the instant vehicle speed adjustment coefficient, the instant temperature adjustment coefficient, the instant mileage adjustment coefficient, and the instant vehicle use frequency adjustment coefficient are all [0.9, 1], but the value range can be adaptively adjusted according to the vehicle weight, engine displacement, and engine mixing degree. For example, the heavier the vehicle weight, the larger the engine displacement, and the higher the mixing degree, the lower limit of the value range is set to be smaller, such as 0.85; the lighter the vehicle weight, the smaller the engine displacement, and the lower the mixing degree, the lower limit of the value range is set to be larger, such as 0.95. It should be noted that the upper limit of all adjustment coefficients is 1, and the lower limit of the adjustment coefficient can only be adjusted according to the vehicle weight, engine displacement, and engine mixing degree.

[0081] Table 1

[0082]

[0083]

[0084] Further, in the monitoring method of the oil maintenance cycle of the vehicle according to the present invention, in step S2, the preset oil use limit includes any one of the oil consumption limit, the mileage limit, and the oil use limit time. Among them, the oil consumption limit refers to the maximum consumption of the oil that can still ensure the normal driving of the vehicle after consumption. In other words, when the oil consumption exceeds this maximum consumption, there may be a driving safety risk. The mileage limit refers to the longest distance that the oil can support driving. The mileage limit is affected by the quality of the oil. When determining the mileage limit, it can be based on the operating characteristics of the engine, involving reliability test conditions, and then relying on the powertrain bench test and the vehicle road reliability test, collect relevant data of the oil sample, and analyze the physical and chemical parameters of the oil. Among them, the physical and chemical parameters are shown in Table 2 below, mainly including the base value of the oil, the acid value of the oil, the viscosity of the oil, the fuel dilution rate of the oil, the moisture content of the oil, the copper content of the oil, the iron content of the oil, and the aluminum content of the oil. Among them, the base number is mainly used to measure the consumption of additives inside the oil, the acid number is mainly used to measure the aging and deterioration of the oil, the viscosity is used to measure the fluidity, shear resistance, and component changes of the oil, the moisture is used to test the water content in the oil, the fuel dilution rate is used to test the fuel content in the oil, and the copper, iron, and aluminum content are used to monitor the wear of the moving parts. In addition, the oil use limit time refers to the shelf life of the oil, which is generally determined based on the oil data provided by the supplier and historical experience data.

[0085] Table 2

[0086]

[0087] Furthermore, in the method for monitoring the oil maintenance cycle of the vehicle according to the present invention, the instant oil consumption threshold corresponding to the sampling moment includes an oil consumption threshold, an instant mileage threshold, and an instant usage time threshold.

[0088] Furthermore, in the monitoring method of the oil maintenance cycle of the vehicle according to the present invention, the oil instant consumption threshold corresponding to the sampling time is determined according to the oil instant consumption adjustment coefficient, the preset redundancy coefficient, and the preset oil use limit, including: determining the oil consumption threshold according to the oil consumption limit and the preset redundancy coefficient. Determining the instant mileage threshold according to the mileage limit, the oil instant consumption adjustment coefficient, and the preset redundancy coefficient. Or, determining the instant use time threshold according to the oil use limit time, the oil instant consumption adjustment coefficient, and the preset redundancy coefficient.

[0089] Furthermore, in the method for monitoring the oil maintenance cycle of the vehicle according to the present invention, the fuel consumption threshold is calculated according to the following formula:

[0090] V0=α·Vmax

[0091] Among them, V0 is the fuel consumption threshold, α is the redundancy coefficient, Vmax is the oil consumption limit value, and the oil consumption limit value is inversely proportional to the vehicle displacement, wherein the vehicle displacement ranges from 0.8L to 4.0L, and the oil consumption limit value ranges from 0.8L to 1.2L. For example, when the vehicle displacement is 0.8L, the oil consumption limit value ranges from 1.2L; when the vehicle displacement is 1.8L, the oil consumption limit value ranges from 1L, and when the vehicle displacement is 4.0L, the oil consumption limit value ranges from 0.8L. Assuming that the redundancy coefficient is 0.8, the vehicle displacement is 1.8L, and the corresponding oil consumption limit value is 1L, the calculated fuel consumption threshold is 0.8L, that is, after the vehicle consumes 0.8L of oil, oil maintenance is required. With this method, since the vehicle displacement is taken into account when determining the oil consumption limit value, the economy of vehicle maintenance can be improved under the premise of ensuring vehicle driving safety. In addition, the fuel consumption threshold is calculated according to the redundancy coefficient, leaving a certain safety margin, which can prevent the problem of reduced driving safety caused by the driver's failure to perform maintenance immediately after the vehicle controller issues a reminder.

[0092] Furthermore, in the method for monitoring the oil maintenance cycle of the vehicle according to the present invention, the instant mileage threshold is calculated according to the following formula:

[0093] S0=α*Smax*λ

[0094] Among them, S0 is the instant mileage threshold, α is the redundancy coefficient, λ is the instant oil consumption adjustment coefficient, Smax is the mileage limit value, and the mileage limit value is inversely proportional to the vehicle engine's mixing degree, wherein the engine's mixing degree ranges from 20% to 100%, and the mileage limit value ranges from 10,000 kilometers to 20,000 kilometers. The engine's mixing degree refers to the proportion of the engine's power in the total power of all power sources. A lower mixing degree means that the engine is used for a longer time and more frequently; a higher mixing degree means that the engine is used for a shorter time and less frequently. The lower the engine's mixing degree, the less oil is consumed, and the same volume of oil can support a longer mileage. For example, when the engine's mixing degree is 20%, the mileage limit value can be 20,000 kilometers; when the engine's mixing degree is 50%, the mileage limit value can be 15,000 kilometers; when the engine's mixing degree is 100%, the mileage limit value is only 10,000 kilometers. Assuming that the redundancy coefficient is 0.8, the vehicle's mixing degree is 20%, the corresponding mileage limit is 20,000 kilometers, and the calculated oil instant consumption adjustment coefficient is 0.81, the calculated instant mileage threshold is 12,960 kilometers, that is, when the vehicle travels 12,906 kilometers, oil maintenance is required. With this method, since the engine's mixing degree is taken into account when determining the mileage limit, the economy of vehicle maintenance can be improved while ensuring the safety of vehicle driving. In addition, the instant mileage threshold is calculated according to the redundancy coefficient, leaving a certain safety margin, which can prevent the problem of reduced driving safety caused by the driver's inability to perform maintenance immediately after the vehicle controller issues a reminder. In addition, the instant mileage threshold is calculated according to the instant fuel consumption adjustment coefficient. Since the instant fuel consumption adjustment coefficient can well represent the current working conditions, driving environment, driving habits, etc. of the vehicle, the calculated instant mileage threshold can be made more accurate.

[0095] Furthermore, in the method for monitoring the oil maintenance cycle of the vehicle according to the present invention, the instant use time threshold is calculated according to the following formula:

[0096] T0=α*Tmax*λ

[0097] Among them, T0 is the instant use time threshold, α is the redundancy coefficient, λ is the instant oil consumption adjustment coefficient, Tmax is the limit time of oil use, and the range of the limit time of oil use is 10 months to 14 months. For example, when the limit time of oil use is 10 months, the redundancy coefficient is 0.8, and the instant oil consumption adjustment coefficient is 1, the calculated threshold of instant use time is 8 months, that is, after 8 months, the vehicle controller will issue a reminder to perform vehicle maintenance. With such a method, the threshold of instant use time is calculated according to the redundancy coefficient, leaving a certain safety margin, which can prevent the problem of reduced driving safety caused by the driver's inability to perform maintenance immediately after the vehicle controller issues a reminder. In addition, the threshold of instant use time is calculated according to the instant fuel consumption adjustment coefficient. Since the instant fuel consumption adjustment coefficient can well represent the current working conditions, driving environment, driving habits, etc. of the vehicle, the calculated threshold of instant use time can be made more accurate.

[0098] Further, in the monitoring method of the oil maintenance cycle of the vehicle according to the present invention, in step S3, when any of the following conditions is met, it is judged that the vehicle has reached the preset oil maintenance condition: the instant oil consumption is greater than or equal to the oil consumption threshold; the total mileage of the vehicle is greater than or equal to the instant mileage threshold; the oil use time is greater than or equal to the instant use time threshold. That is to say, in this embodiment, it is necessary to judge that the vehicle has reached the preset oil maintenance condition when any of the above conditions are met. For example, the current state of the vehicle is that the instant oil consumption is 0.8L, the oil consumption threshold is 1L; the total mileage of the vehicle is 5000km, the instant mileage threshold is 10,000 kilometers; the oil use time is 13 months, and the instant use time threshold is 12 months; then even if the first two conditions are not met, only the third condition is met, it is still judged that the vehicle has reached the preset oil maintenance condition. That is to say, as long as any one of the conditions is met first, regardless of whether the other conditions are met, the vehicle meets the preset oil maintenance condition. With such a method, the user can be reminded to change the oil in time to improve the driving safety of the vehicle.

[0099] Furthermore, in the method for monitoring the oil maintenance cycle of the vehicle according to the present invention, in step S4, the vehicle controller sends an oil maintenance reminder message to the vehicle display screen. The vehicle display screen is a device provided on the vehicle that can display information such as images. If the vehicle is provided with multiple vehicle display screens, it is preferred to send the reminder message to the vehicle display screen closest to the main driver's seat. In addition, the reminder message can be text only, or in the form of text and voice.

[0100] Further, in the method for monitoring the oil maintenance cycle of the vehicle according to the present invention, after step S4, the method further includes: periodically acquiring oil quantity information and oil quality information in the oil pan of the vehicle at a second time interval of a preset duration, and determining whether the vehicle has undergone oil maintenance according to the oil quantity information and the oil quality information;

[0101] If yes, the driving data information and adjustment coefficient determination information of the current maintenance cycle are cleared, and the next maintenance cycle is entered;

[0102] If not, return to step S4.

[0103] Specifically, the oil quantity information can be measured by the oil level sensor, and the oil quality information is determined by the parameters mentioned in Table 2 above. Moreover, in this embodiment, the oil needs to be replaced and filled up to determine that the vehicle has undergone oil maintenance. For example, assuming that the vehicle fuel consumption threshold is 1L, the immediate mileage threshold is 10,000 kilometers, and the immediate use time threshold is 12 months, when the vehicle oil consumption is 1.1L, the total mileage of the vehicle is 5000km, and the oil usage time is 5 months, the mileage and usage time thresholds are not reached. It is just that the oil is insufficient. At this time, the oil still needs to be replaced, and 4L of oil needs to be added to complete this maintenance, otherwise the vehicle controller will continue to send reminders for oil maintenance. If the vehicle oil consumption is 1.1L, the total mileage of the vehicle exceeds 10,000 kilometers, or the oil usage time exceeds 12 months, or even if the oil consumption is less than 1L, but the total mileage of the vehicle exceeds 10,000 kilometers, or the oil usage time exceeds 12 months, then the oil needs to be replaced, and when the oil is replaced, the oil needs to be filled up to determine that the vehicle has undergone oil maintenance. In other words, when the vehicle controller determines that oil maintenance is required, the oil needs to be replaced and filled up to complete the oil maintenance. More specifically, the second time interval is within the time range of 2 days to 10 days, for example, it can be 2 days, 4 and a half days, 10 days, or other times within this range. Among them, within the same maintenance cycle, the duration of the first time interval is less than or equal to the duration of the second time interval. In other words, the period for judging whether the vehicle meets the preset oil maintenance conditions should be equal to or shorter than the period for judging whether the vehicle has undergone oil maintenance, so as to avoid the problem of invalid judgment caused by the lag in data collection.

[0104] Embodiment 2:

[0105] Based on the above-mentioned vehicle oil maintenance cycle monitoring method, this embodiment also provides a specific vehicle oil maintenance cycle monitoring method, specifically, refer to Figure 2 .

[0106] First, the vehicle controller obtains the vehicle's real-time driving data information and real-time adjustment coefficient determination information. It should be noted that before obtaining the above information, the data of the previous cycle will be cleared.

[0107] Secondly, the vehicle controller calculates the instant oil consumption, total vehicle mileage, oil usage time and instant oil consumption adjustment coefficient corresponding to the sampling time according to the acquired instant driving data information of the vehicle and the instant adjustment coefficient determination information. Then, the fuel consumption threshold, instant driving mileage threshold and instant usage time threshold are calculated according to the instant oil consumption adjustment coefficient, the preset oil consumption limit value, the driving mileage limit value and the oil usage limit time. The specific calculation methods are described in detail in Example 1 and will not be repeated here.

[0108] Afterwards, the vehicle controller simultaneously compares the instantaneous oil consumption with the fuel consumption threshold, compares the total vehicle mileage with the instantaneous mileage threshold, and compares the oil usage time with the instantaneous usage time threshold. When any one of the three conditions is met, namely, the instantaneous oil consumption is greater than or equal to the fuel consumption threshold, the total vehicle mileage is greater than or equal to the instantaneous mileage threshold, or the oil usage time is greater than or equal to the instantaneous usage time threshold, an oil maintenance reminder message is generated and sent to the vehicle's on-board display screen to remind the user to perform oil maintenance.

[0109] Then, the vehicle controller determines whether the vehicle has undergone oil maintenance, that is, monitors the oil volume and oil quality. If the oil is replaced and filled, it means that the maintenance is completed and enters the next cycle. If the oil is not replaced or filled, the vehicle controller continues to send reminder information to the vehicle display.

[0110] This solution can timely remind consumers to maintain the engine, especially the engine of hybrid vehicles, so as to ensure safe use; and it can accurately predict the oil change time, reduce consumer maintenance costs and improve satisfaction. In addition, for vehicles with different driving habits and different technical solutions, especially hybrid vehicles, a unified oil maintenance cycle monitoring method can be used, which reduces development costs. This solution can also improve the accuracy of oil maintenance cycle prediction for traditional fuel vehicles.

[0111] Embodiment 3:

[0112] Based on the above-mentioned method for monitoring the oil maintenance cycle of a vehicle, this embodiment also provides a vehicle controller, including a memory and a controller.

[0113] The memory is used to store the control program. When the processor processes the control program, the processor executes the steps of the method for monitoring the oil maintenance cycle of the vehicle as described in any of the above embodiments.

[0114] Specifically, the memory is used to store the control program, and the processor executes the steps of the vehicle steering wheel angle correction method described in the above embodiment when processing the control program. Among them, the memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. The controller is a hardware circuit with data processing function, such as a CPU.

[0115] Embodiment 4:

[0116] Based on the above vehicle controller, this embodiment also provides a vehicle, including the vehicle controller of the above embodiment.

[0117] The vehicle described in this embodiment includes but is not limited to a traditional fuel vehicle and may also be a hybrid vehicle. The hybrid system of a hybrid vehicle may be a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), an extended range hybrid vehicle (REEV) and a 48V hybrid vehicle.

[0118] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A method for monitoring the oil maintenance cycle of a vehicle, characterized in that: The following steps are involved: S1: Entering the current maintenance cycle, clearing the driving data information and adjustment coefficient determination information of the vehicle in the previous maintenance cycle; and periodically acquiring the real-time driving data information and real-time adjustment coefficient determination information of the vehicle at a first time interval of a preset duration during the current maintenance cycle; Determine the instantaneous oil consumption data corresponding to the sampling time according to the instantaneous driving data information acquired at the sampling time and the preset engine calibration parameters, and calculate the instantaneous oil consumption adjustment coefficient according to the instantaneous adjustment coefficient determination information; S2: determining the instantaneous oil consumption threshold corresponding to the sampling moment according to the instantaneous oil consumption adjustment coefficient, the preset redundancy coefficient, and the preset oil usage limit; S3: judging whether the vehicle meets a preset oil maintenance condition according to the comparison result of the oil instant consumption data corresponding to the sampling time and the oil instant consumption threshold value corresponding to the sampling time; If yes, execute step S4; If not, continue to determine whether the vehicle meets the oil maintenance conditions; S4: The vehicle controller of the vehicle generates and sends reminder information for oil maintenance; in In step S1, the instant adjustment coefficient determination information includes the average vehicle speed, average ambient temperature, average single trip mileage, and average vehicle use frequency per day from the start time of the current maintenance cycle to the sampling time; and Calculating the instant oil consumption adjustment coefficient according to the instant adjustment coefficient determination information includes: Determine the instantaneous vehicle speed adjustment coefficient, the instantaneous temperature adjustment coefficient, the instantaneous mileage adjustment coefficient, and the instantaneous vehicle use frequency adjustment coefficient according to the average vehicle speed, the average ambient temperature, the single average driving mileage, and the average vehicle use frequency per day, respectively; The instant oil consumption adjustment coefficient is determined according to the instant vehicle speed adjustment coefficient, the instant temperature adjustment coefficient, the instant mileage adjustment coefficient, and the instant vehicle use frequency adjustment coefficient, wherein the instant oil consumption adjustment coefficient is calculated according to the following formula: λ=α*β*γ*δ Among them, λ is the instant oil consumption adjustment coefficient, α is the instant vehicle speed adjustment coefficient, β is the instant temperature adjustment coefficient, γ is the instant mileage adjustment coefficient, and δ is the instant vehicle use frequency adjustment coefficient.

2. The method for monitoring the engine oil maintenance cycle of a vehicle according to claim 1, characterized in that: In step S1, the real-time driving data information includes the average fuel consumption per 100 kilometers and the total mileage of the vehicle from the start time of the current maintenance cycle to the sampling time; The preset engine calibration parameters include the maximum engine-fuel ratio of the engine; The instantaneous oil consumption data corresponding to the sampling time includes at least one of the instantaneous oil consumption, the total vehicle mileage, and the oil usage time from the start time of the current maintenance cycle to the sampling time; and Determining the instantaneous oil consumption data corresponding to the sampling time according to the acquired instantaneous driving data information and the preset engine calibration parameters includes: Calculating the instantaneous oil consumption according to the average fuel consumption per 100 kilometers, the total mileage of the vehicle, and the maximum engine-fuel ratio of the engine; in The vehicle mileage from the start time of the current maintenance cycle to the sampling time is taken as the total vehicle mileage; or The time from the start time of the current maintenance cycle to the sampling time is taken as the engine oil usage time.

3. The method for monitoring the vehicle oil maintenance cycle as claimed in claim 2, characterized in that: The instantaneous vehicle speed adjustment coefficient increases first and then decreases as the average vehicle speed increases, and when the average vehicle speed increases to an intermediate vehicle speed threshold, the instantaneous vehicle speed adjustment coefficient increases to a maximum, and when the average vehicle speed continues to increase from the intermediate vehicle speed threshold, the instantaneous vehicle speed adjustment coefficient decreases from a maximum to a minimum, wherein the average vehicle speed ranges from 10 km / h to 120 km / h, the intermediate vehicle speed threshold ranges from 60 km / h to 80 km / h, and the instantaneous vehicle speed adjustment coefficient ranges from 0.9 to 1; The instant temperature adjustment coefficient increases with the increase of the average ambient temperature, the average ambient temperature ranges from -25°C to -15°C, and the instant temperature adjustment coefficient ranges from 0.9 to 1; The instant driving mileage adjustment coefficient increases first and then decreases as the single average driving mileage decreases, and when the single average driving mileage decreases to an intermediate mileage threshold, the instant driving mileage adjustment coefficient increases to a maximum, and when the single average driving mileage continues to decrease from the intermediate mileage threshold, the instant driving mileage adjustment coefficient decreases from a maximum to a minimum, wherein the single average driving mileage ranges from 0 km to 10 km, the intermediate mileage threshold ranges from 3 km to 10 km; and the instant driving mileage adjustment coefficient ranges from 0.9 to 1; The instant vehicle usage frequency adjustment coefficient increases as the average daily vehicle usage frequency decreases. The average daily vehicle usage frequency ranges from 4 times to 10 times, and the instant vehicle usage frequency adjustment coefficient ranges from 0.9 to 1.

4. The method for monitoring the vehicle oil maintenance cycle as claimed in claim 3, characterized in that: In step S2, the preset oil usage limit value includes any one of an oil consumption limit value, a mileage limit value, and an oil usage limit time; The instant oil consumption threshold corresponding to the sampling time includes an oil consumption threshold, an instant driving mileage threshold, and an instant use time threshold; and Determining the instantaneous oil consumption threshold corresponding to the sampling moment according to the instantaneous oil consumption adjustment coefficient, the preset redundancy coefficient, and the preset oil usage limit value includes: determining the fuel consumption threshold value according to the oil consumption limit value and the preset redundancy coefficient; Determining the instantaneous mileage threshold value according to the mileage limit value, the instantaneous oil consumption adjustment coefficient, and the preset redundancy coefficient; or The immediate use time threshold is determined according to the oil use limit time, the oil immediate consumption adjustment coefficient, and the preset redundancy coefficient.

5. The method for monitoring the vehicle oil maintenance cycle as claimed in claim 4, characterized in that: The fuel consumption threshold is calculated according to the following formula: V0=α*Vmax Wherein, V0 is the fuel consumption threshold, α is the redundancy coefficient, Vmax is the oil consumption limit value, and the oil consumption limit value is inversely proportional to the vehicle displacement, wherein the vehicle displacement ranges from 0.8L to 4.0L, and the oil consumption limit value ranges from 0.8L to 1.2L; and The instant mileage threshold is calculated according to the following formula: S0=α*Smax*λ Wherein, S0 is the instant mileage threshold, α is the redundancy coefficient, λ is the instant oil consumption adjustment coefficient, Smax is the mileage limit value, and the mileage limit value is inversely proportional to the mixing degree of the vehicle engine, wherein the mixing degree of the engine ranges from 20% to 100%, and the mileage limit value ranges from 10,000 kilometers to 20,000 kilometers; and The instant usage time threshold is calculated according to the following formula: T0=α*Tmax*λ Among them, T0 is the instant use time threshold, α is the redundancy coefficient, λ is the instant oil consumption adjustment coefficient, Tmax is the oil use limit time, and the oil use limit time ranges from 10 months to 14 months.

6. The method for monitoring the engine oil maintenance cycle of a vehicle as claimed in claim 5, characterized in that: In step S3, when any of the following conditions is met, it is determined that the vehicle has reached the preset oil maintenance condition: The instantaneous oil consumption is greater than or equal to the oil consumption threshold; The total vehicle mileage is greater than or equal to the instant mileage threshold; The engine oil usage time is greater than or equal to the immediate usage time threshold.

7. The method for monitoring the engine oil maintenance cycle of a vehicle as claimed in claim 6, characterized in that: The instantaneous oil consumption is calculated according to the following formula: Wherein, V1 is the instantaneous oil consumption, V2 is the average fuel consumption per 100 kilometers, S is the total mileage of the vehicle, and R is the maximum engine-fuel ratio of the engine; and In step S4, the vehicle controller sends the oil maintenance reminder information to the vehicle display screen; and After step S4, the method further includes: periodically acquiring engine oil quantity information and engine oil product information in an oil pan of the vehicle at a second time interval of a preset length, and determining whether the vehicle has undergone engine oil maintenance based on the engine oil quantity information and the engine oil product information; If yes, clear the driving data information and adjustment coefficient determination information of the current maintenance cycle and enter the next maintenance cycle; If not, return to step S4; and In step S1, the first time interval is within a time range of 1 day to 7 days; the second time interval is within a time range of 2 days to 10 days; wherein, within the same maintenance cycle, the duration of the first time interval is less than or equal to the duration of the second time interval; The preset redundancy coefficient ranges from 0.7 to 0.

9.

8. A vehicle controller, characterized in that: include: A memory, wherein the memory is used to store a control program; A processor, wherein when processing the control program, the processor executes the steps of the method for monitoring the oil maintenance cycle of a vehicle as described in any one of claims 1-7.

9. A vehicle, characterized in that: Including the vehicle controller as claimed in claim 8.

Images