阅读说明：本技术 一种车辆机油寿命实时预测方法及装置 (Method and device for predicting service life of vehicle engine oil in real time ) 是由 陈秀 马蜀超 周祥军 余亮 郝宏基 于 2020-12-24 设计创作，主要内容包括：本申请涉及一种车辆机油寿命实时预测方法及装置,涉及汽车技术领域,该方法包括以下步骤：获得机油压力历史超限次数、机油温度历史超限次数以及机油含水量历史超限次数；监测机油实时粘度,根据机油实时粘度以及机油初始粘度,计算获得实时粘度比值；根据机油压力历史超限次数、机油温度历史超限次数、机油含水量历史超限次数、实时粘度比值、机油粘度比值上限值、机油粘度比值下限值、机油更换里程以及机油运行里程,计算获得机油剩余寿命。本申请对机油粘度进行实施监测,并记录机油多种数据的历史情况,多个因素综合评估,对车辆机油寿命进行合理预测,具有成本低、操作便利以及准确度高的优势。(The application relates to a method and a device for predicting the service life of vehicle engine oil in real time, which relate to the technical field of automobiles, and the method comprises the following steps: obtaining the historical number of times of exceeding the limit of the pressure of the engine oil, the historical number of times of exceeding the limit of the temperature of the engine oil and the historical number of times of exceeding the limit of the water content of the engine oil; monitoring the real-time viscosity of the engine oil, and calculating to obtain a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil; and calculating to obtain the residual service life of the engine oil according to the historical number of times of exceeding the engine oil pressure, the historical number of times of exceeding the engine oil temperature, the historical number of times of exceeding the engine oil water content, the real-time viscosity ratio, the upper limit value of the engine oil viscosity ratio, the lower limit value of the engine oil viscosity ratio, the engine oil replacement mileage and the engine oil running mileage. This application implements the monitoring to machine oil viscosity to the historical condition of the multiple data of record machine oil, the comprehensive aassessment of a plurality of factors carries out reasonable prediction to vehicle machine oil life-span, has with low costs, the operation is convenient and the high advantage of degree of accuracy.)

1. A real-time prediction method for the oil life of a vehicle is characterized by comprising the following steps:

obtaining the historical number of times of exceeding the limit of the pressure of the engine oil, the historical number of times of exceeding the limit of the temperature of the engine oil and the historical number of times of exceeding the limit of the water content of the engine oil;

monitoring the real-time viscosity of the engine oil, and calculating to obtain a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;

and calculating to obtain the residual service life of the engine oil according to the historical number of times of exceeding the engine oil pressure, the historical number of times of exceeding the engine oil temperature, the historical number of times of exceeding the engine oil water content, the real-time viscosity ratio, the upper limit value of the engine oil viscosity ratio, the lower limit value of the engine oil viscosity ratio, the engine oil replacement mileage and the engine oil running mileage.

2. The method for real-time prediction of vehicle oil life according to claim 1, wherein the method is based on an oil remaining life calculation formula, the oil remaining life formula being:

wherein the content of the first and second substances,

f_{residual life of engine oil}For the remaining life of the engine oil, f₀For the engine oil change mileage, λ is the real-time viscosity ratio, λ_{Upper limit of}As the upper limit value of the viscosity ratio of the engine oil, lambda_{Lower limit of}Is the lower limit value of the viscosity ratio of the engine oil, a is the ratio of the operating mileage of the engine oil to the replacement mileage of the engine oil, F₁For said number of engine oil pressure history overruns, F₂For the number of historical engine oil temperature overruns, F₃For the number of historical overruns of the water content of the engine oil, F_{Limit value}Is that it isThe sum of the historical number of engine oil pressure overrun, the historical number of engine oil temperature overrun, and the historical number of engine oil water content overrun.

3. The method for real-time prediction of vehicle oil life as claimed in claim 1, further comprising the steps of:

monitoring the engine oil pressure in real time, comparing the engine oil pressure with a preset engine oil pressure threshold value, and counting the historical number of times of exceeding the limit of the engine oil pressure;

monitoring the engine oil temperature in real time, comparing the engine oil temperature with a preset engine oil temperature threshold value, and counting the historical number of times of exceeding the limit of the engine oil temperature;

and monitoring the water content of the engine oil in real time, comparing the water content with a preset threshold value of the water content of the engine oil, and counting the historical number of times of exceeding the limit of the water content of the engine oil.

4. The method for real-time prediction of vehicle oil life as claimed in claim 1, further comprising the steps of:

and when the residual service life of the engine oil is lower than a preset engine oil service life early warning value, issuing an engine oil replacement prompt.

5. The method for real-time prediction of vehicle oil life as claimed in claim 1, further comprising the steps of:

when the residual service life of the engine oil is lower than a preset engine oil service life early warning value, issuing engine oil replacement information; wherein the content of the first and second substances,

the engine oil replacement information comprises engine oil initial filling information and engine oil historical replacement information.

6. The method for real-time prediction of vehicle oil life as claimed in claim 1, further comprising the steps of:

and issuing an oil change alarm when the remaining life of the oil is equal to 0.

7. A vehicle oil life real-time prediction apparatus, characterized in that the apparatus comprises:

the historical information extraction unit is used for obtaining the historical number of times of exceeding the limit of the oil pressure, the historical number of times of exceeding the limit of the oil temperature and the historical number of times of exceeding the limit of the water content of the oil;

the engine oil viscosity ratio monitoring unit is used for monitoring and obtaining the real-time viscosity of the engine oil and calculating and obtaining a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;

and the engine oil residual life calculating unit is used for calculating and obtaining the engine oil residual life according to the engine oil pressure historical overrun times, the engine oil temperature historical overrun times, the engine oil water content historical overrun times, the real-time viscosity ratio, the engine oil viscosity ratio upper limit value, the engine oil viscosity ratio lower limit value, the engine oil replacement mileage and the engine oil operation mileage.

8. The vehicle oil life real-time prediction device of claim 7, wherein the system is based on an oil remaining life calculation formula, the oil remaining life formula being:

wherein the content of the first and second substances,

f_{residual life of engine oil}For the remaining life of the engine oil, f₀For the engine oil change mileage, λ is the real-time viscosity ratio, λ_{Upper limit of}As the upper limit value of the viscosity ratio of the engine oil, lambda_{Lower limit of}Is the lower limit value of the viscosity ratio of the engine oil, a is the ratio of the operating mileage of the engine oil to the replacement mileage of the engine oil, F₁For said number of engine oil pressure history overruns, F₂For the number of historical engine oil temperature overruns, F₃For the number of historical overruns of the water content of the engine oil, F_{Limit value}The historical number of times of exceeding the limit of the oil pressure, the historical number of times of exceeding the limit of the oil temperature and the historical number of times of exceeding the limit of the water content of the oil are the sum.

9. The vehicle oil life real-time prediction device of claim 7, further comprising a real-time monitoring unit and a historical data statistics unit;

the real-time monitoring unit is used for monitoring the engine oil pressure, the engine oil temperature and the oil water content in real time;

the historical data statistical unit is used for comparing each real-time engine oil pressure obtained by monitoring with a preset engine oil pressure threshold value, and counting the historical number of times of exceeding the limit of the engine oil pressure;

the historical data statistical unit is also used for comparing each real-time engine oil temperature obtained by monitoring with a preset engine oil temperature threshold value, and counting the historical number of times of exceeding the limit of the engine oil temperature;

the historical data statistical unit is also used for comparing the monitored real-time engine oil water content with a preset engine oil water content threshold value, and counting the historical number of times of exceeding the limit of the engine oil water content.

10. The vehicle oil life real-time prediction apparatus according to claim 8, characterized in that the apparatus further comprises a prompt information issuing unit;

the prompt information issuing unit is used for issuing an engine oil replacement prompt when the residual service life of the engine oil is lower than a preset engine oil service life early warning value;

the prompt information issuing unit is also used for issuing an engine oil replacement alarm when the remaining service life of the engine oil is equal to 0.

Technical Field

The application relates to the technical field of automobiles, in particular to a method and a device for predicting the service life of vehicle engine oil in real time.

Background

At the present stage, in order to ensure that the engine can normally perform daily work, the engine oil needs to be replaced regularly, and in the engine oil replacement work, the oil life needs to be predicted, and the oil life prediction generally adopts the following 3 methods:

the engine oil replacement mileage or time is determined according to specific limit working conditions, but the engine oil service life curves, namely the service time and mileage accumulation curves, of the same engine model in different configurations or the same engine model in the same configuration under different working conditions are different. Therefore, the service life of the engine oil determined according to a single specific limit working condition is possibly shorter than the actual service life of most vehicles, so that engine oil waste is caused, the vehicle maintenance cost is increased, the waste oil treatment cost is increased, and the risk of influence on environmental pollution is increased. In addition, under certain severe working conditions or poor driving behaviors, the actual service life of the engine oil is shorter than the service life of the engine oil determined for a specific limit working condition, so that excessive abrasion of parts of an engine and shortening of the service life of the parts of the engine may occur in the later period of use of the engine oil, the fuel economy is deteriorated, and even disastrous results may be generated.

The decay degree of each performance index of the engine oil is measured, but the method is high in cost and long in time consumption and is about applied to ordinary users.

The oil viscosity is calculated through a single factor, and the oil life is predicted, but the method has the advantages of single consideration factor and poor prediction accuracy.

Therefore, the method for predicting the service life of the automobile engine oil, which is convenient to operate, high in accuracy and low in implementation cost, is lacked at present.

Disclosure of Invention

The application provides a method and a device for predicting the service life of vehicle engine oil in real time, which are used for monitoring the viscosity of the engine oil, recording the historical conditions of various data of the engine oil, comprehensively evaluating a plurality of factors, reasonably predicting the service life of the vehicle engine oil and have the advantages of low cost, convenience in operation and high accuracy.

In a first aspect, the present application provides a method for predicting a vehicle oil life in real time, the method comprising the steps of:

obtaining the historical number of times of exceeding the limit of the pressure of the engine oil, the historical number of times of exceeding the limit of the temperature of the engine oil and the historical number of times of exceeding the limit of the water content of the engine oil;

monitoring the real-time viscosity of the engine oil, and calculating to obtain a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;

and calculating to obtain the residual service life of the engine oil according to the historical number of times of exceeding the engine oil pressure, the historical number of times of exceeding the engine oil temperature, the historical number of times of exceeding the engine oil water content, the real-time viscosity ratio, the upper limit value of the engine oil viscosity ratio, the lower limit value of the engine oil viscosity ratio, the engine oil replacement mileage and the engine oil running mileage.

Specifically, the method is based on an engine oil residual life calculation formula, and the engine oil residual life formula is as follows:

wherein the content of the first and second substances,

f_{residual life of engine oil}For the remaining life of the engine oil, f₀For the engine oil change mileage, λ is the real-time viscosity ratio, λ_{Upper limit of}As the upper limit value of the viscosity ratio of the engine oil, lambda_{Lower limit of}Is the lower limit value of the viscosity ratio of the engine oil, a is the ratio of the operating mileage of the engine oil to the replacement mileage of the engine oil, F₁For said number of engine oil pressure history overruns, F₂For the number of historical engine oil temperature overruns, F₃For the number of historical overruns of the water content of the engine oil, F_{Limit value}The historical number of times of exceeding the limit of the oil pressure, the historical number of times of exceeding the limit of the oil temperature and the historical number of times of exceeding the limit of the water content of the oil are the sum.

Further, the method comprises the following steps:

monitoring the engine oil pressure in real time, comparing the engine oil pressure with a preset engine oil pressure threshold value, and counting the historical number of times of exceeding the limit of the engine oil pressure;

monitoring the engine oil temperature in real time, comparing the engine oil temperature with a preset engine oil temperature threshold value, and counting the historical number of times of exceeding the limit of the engine oil temperature;

and monitoring the water content of the engine oil in real time, comparing the water content with a preset threshold value of the water content of the engine oil, and counting the historical number of times of exceeding the limit of the water content of the engine oil.

Further, the method comprises the following steps:

and when the residual service life of the engine oil is lower than a preset engine oil service life early warning value, issuing an engine oil replacement prompt.

Further, the method comprises the following steps:

when the residual service life of the engine oil is lower than a preset engine oil service life early warning value, issuing engine oil replacement information; wherein the content of the first and second substances,

the engine oil replacement information comprises engine oil initial filling information and engine oil historical replacement information.

Further, the method comprises the following steps:

and issuing an oil change alarm when the remaining life of the oil is equal to 0.

In a second aspect, the present application provides a vehicle oil life real-time prediction apparatus, the apparatus comprising:

the historical information extraction unit is used for obtaining the historical number of times of exceeding the limit of the oil pressure, the historical number of times of exceeding the limit of the oil temperature and the historical number of times of exceeding the limit of the water content of the oil;

the engine oil viscosity ratio monitoring unit is used for monitoring and obtaining the real-time viscosity of the engine oil and calculating and obtaining a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;

and the engine oil residual life calculating unit is used for calculating and obtaining the engine oil residual life according to the engine oil pressure historical overrun times, the engine oil temperature historical overrun times, the engine oil water content historical overrun times, the real-time viscosity ratio, the engine oil viscosity ratio upper limit value, the engine oil viscosity ratio lower limit value, the engine oil replacement mileage and the engine oil operation mileage.

Specifically, the system is based on an engine oil remaining life calculation formula, and the engine oil remaining life formula is as follows:

wherein the content of the first and second substances,

f_{residual life of engine oil}For the remaining life of the engine oil, f₀For the engine oil change mileage, λ is the real-time viscosity ratio, λ_{Upper limit of}As the upper limit value of the viscosity ratio of the engine oil, lambda_{Lower limit of}Is the lower limit value of the viscosity ratio of the engine oil, a is the ratio of the operating mileage of the engine oil to the replacement mileage of the engine oil, F₁For said number of engine oil pressure history overruns, F₂For the number of historical engine oil temperature overruns, F₃For the number of historical overruns of the water content of the engine oil, F_{Limit value}The historical number of times of exceeding the limit of the oil pressure, the historical number of times of exceeding the limit of the oil temperature and the historical number of times of exceeding the limit of the water content of the oil are the sum.

Furthermore, the device also comprises a real-time monitoring unit and a historical data statistical unit;

the real-time monitoring unit is used for monitoring the engine oil pressure, the engine oil temperature and the oil water content in real time;

the historical data statistical unit is used for comparing each real-time engine oil pressure obtained by monitoring with a preset engine oil pressure threshold value, and counting the historical number of times of exceeding the limit of the engine oil pressure;

the historical data statistical unit is also used for comparing each real-time engine oil temperature obtained by monitoring with a preset engine oil temperature threshold value, and counting the historical number of times of exceeding the limit of the engine oil temperature;

the historical data statistical unit is also used for comparing the monitored real-time engine oil water content with a preset engine oil water content threshold value, and counting the historical number of times of exceeding the limit of the engine oil water content.

Further, the device also comprises a prompt message issuing unit;

the prompt information issuing unit is used for issuing an engine oil replacement prompt when the residual service life of the engine oil is lower than a preset engine oil service life early warning value;

the prompt information issuing unit is also used for issuing an engine oil replacement alarm when the remaining service life of the engine oil is equal to 0.

The beneficial effect that technical scheme that this application provided brought includes:

this application implements the monitoring to machine oil viscosity to the historical condition of the multiple data of record machine oil, the comprehensive aassessment of a plurality of factors carries out reasonable prediction to vehicle machine oil life-span, has with low costs, the operation is convenient and the high advantage of degree of accuracy.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a flow chart illustrating steps of a method for predicting a vehicle oil life in real time according to an embodiment of the present disclosure;

FIG. 2 is a schematic hardware block diagram of a method for predicting the oil life of a vehicle in real time according to an embodiment of the present disclosure;

fig. 3 is a block diagram of a vehicle oil life real-time prediction apparatus provided in an embodiment of the present application.

Detailed Description

Interpretation of terms:

CAN Bus, Controller Area Network Bus, serial Bus system;

sensors, Sensors;

GPS, Global Positioning System;

storm, a distributed real-time big data processing framework;

redis, Remote Dictionary Server, i.e., Remote Dictionary service;

spark, a general parallel framework like Hadoop MapReduce;

HBase, a distributed, column-oriented open source database;

HDFS, Hadoop Distributed File System, Distributed File System;

hive, a data warehouse tool based on Hadoop;

presto, a distributed SQL query engine;

PDM, Product Data Management;

CRM, Customer Relationship Management;

ECU, Electronic Control Unit.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The embodiment of the application provides a method and a device for predicting the service life of vehicle engine oil in real time, which are used for monitoring the viscosity of the engine oil, recording the historical conditions of various data of the engine oil, comprehensively evaluating a plurality of factors, reasonably predicting the service life of the vehicle engine oil and having the advantages of low cost, convenience in operation and high accuracy.

In order to achieve the technical effects, the general idea of the application is as follows:

a real-time prediction method for the service life of vehicle oil comprises the following steps:

s1, obtaining the historical number of times of exceeding the limit of the pressure of the engine oil, the historical number of times of exceeding the limit of the temperature of the engine oil and the historical number of times of exceeding the limit of the water content of the engine oil;

s2, monitoring the real-time viscosity of the engine oil, and calculating to obtain a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;

and S3, calculating and obtaining the residual service life of the engine oil according to the historical number of the overrun of the pressure of the engine oil, the historical number of the overrun of the temperature of the engine oil, the historical number of the overrun of the water content of the engine oil, the real-time viscosity ratio, the upper limit value of the viscosity ratio of the engine oil, the lower limit value of the viscosity ratio of the engine oil, the replacement mileage of the engine oil and the operating mileage of the.

Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In a first aspect, referring to fig. 1 and 2, an embodiment of the present application provides a method for predicting an oil life of a vehicle in real time, where the method includes the following steps:

s1, obtaining the historical number of times of exceeding the limit of the pressure of the engine oil, the historical number of times of exceeding the limit of the temperature of the engine oil and the historical number of times of exceeding the limit of the water content of the engine oil;

s2, monitoring the real-time viscosity of the engine oil, and calculating to obtain a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;

and S3, calculating and obtaining the residual service life of the engine oil according to the historical number of the overrun of the pressure of the engine oil, the historical number of the overrun of the temperature of the engine oil, the historical number of the overrun of the water content of the engine oil, the real-time viscosity ratio, the upper limit value of the viscosity ratio of the engine oil, the lower limit value of the viscosity ratio of the engine oil, the replacement mileage of the engine oil and the operating mileage of the.

In the embodiment of the application, the viscosity of the engine oil is monitored, the historical conditions of various data of the engine oil are recorded, a plurality of factors are comprehensively evaluated, the service life of the engine oil of the vehicle is reasonably predicted, and the engine oil monitoring system has the advantages of low cost, convenience in operation and high accuracy.

Specifically, the method is based on an engine oil residual life calculation formula, wherein the engine oil residual life formula is as follows:

wherein the content of the first and second substances,

f_{residual life of engine oil}For remaining life of engine oil, f₀Mileage is changed for engine oil, lambda is real-time viscosity ratio, lambda_{Upper limit of}As the upper limit value of the viscosity ratio of the engine oil, lambda_{Lower limit of}Is the lower limit value of the viscosity ratio of the engine oil, a is the ratio of the operating mileage of the engine oil to the replacement mileage of the engine oil, F₁For the number of engine oil pressure history overruns, F₂The number of times of the historical overrun of the engine oil temperature,F₃the historical number of times of overrun of the water content of the engine oil, F_{Limit value}The engine oil temperature history overrun times and the engine oil water content history overrun times are the sum of the engine oil pressure history overrun times, the engine oil temperature history overrun times and the engine oil water content history overrun times.

Further, the method comprises the following steps:

monitoring the engine oil pressure in real time, comparing the engine oil pressure with a preset engine oil pressure threshold value, and counting the historical number of times of exceeding the limit of the engine oil pressure;

monitoring the engine oil temperature in real time, comparing the engine oil temperature with a preset engine oil temperature threshold value, and counting the historical number of times of exceeding the limit of the engine oil temperature;

and monitoring the water content of the engine oil in real time, comparing the water content with a preset threshold value of the water content of the engine oil, and counting the historical number of times of exceeding the limit of the water content of the engine oil.

Further, the method comprises the following steps:

and when the residual service life of the engine oil is lower than a preset engine oil service life early warning value, issuing an engine oil replacement prompt.

Further, the method comprises the following steps:

when the residual service life of the engine oil is lower than a preset engine oil service life early warning value, issuing engine oil replacement information; wherein the content of the first and second substances,

the oil change information includes oil initial filling information and oil history change information.

Further, the method comprises the following steps:

when the remaining oil life is equal to 0, an oil change alarm is issued.

As shown in fig. 2, in specific implementation, the hardware schematic structure diagram of the embodiment of the present application includes:

the vehicle operation module is used for sensing vehicle operation condition information by a sensor in the vehicle operation process, processing and analyzing the vehicle operation condition information by each ECU, and communicating the vehicle operation condition information in a CAN Bus in a message form;

the data acquisition module is used for acquiring related messages and GPS data, transmitting the related messages and the GPS data to a message channel of the data center station in a diary mode through a 4G/5G network, and after receiving the data, the message channel Kafka carries out processing analysis through the real-time calculation module and the off-line calculation module and stores the result in a corresponding storage unit;

carrying out modeling and data analysis in a Python environment of a data center, and storing the result in a storage unit;

the business service module extracts the analysis result from the storage unit in real time to monitor the engine oil life, sends an alarm to the client through the meter and the APP to send a prompt to the client when the remaining value of the engine oil life is close to a threshold value, recommends an engine oil replacement site and related preferential activities of the client, sends the alarm to the client through the meter and the APP when the found result exceeds the limit value, and actively contacts to provide engine oil replacement service;

a big data analysis module is also configured, the module carries out statistics on engine oil pressure, engine oil temperature and engine oil water content every 40 hours of engine running time, simultaneously compares the statistics with respective limit values, and records and counts values exceeding the limit values and parameters collected in data collection modules such as GPS time and place and vehicle rotating speed of the values;

displaying and monitoring lambda in real time in a service module according to lambda and a limit lambda_{Upper limit of}Or λ_{Lower limit of}And estimating the residual service life of the engine oil, and correcting the residual service life of the engine oil according to historical overrun statistical results of the pressure, the temperature and the water content of the engine oil.

When the engine oil life is evaluated in real time, based on an engine oil residual life calculation formula:

wherein f is₀For changing mileage for engine oil, f_{Residual life of engine oil}For remaining life of engine oil, f₀Mileage is changed for engine oil, lambda is real-time viscosity ratio, lambda_{Upper limit of}As the upper limit value of the viscosity ratio of the engine oil, lambda_{Lower limit of}Is the lower limit value of the viscosity ratio of the engine oil, a is the ratio of the operating mileage of the engine oil to the replacement mileage of the engine oil, F₁For the number of engine oil pressure history overruns, F₂For the number of engine oil temperature history overruns, F₃The historical number of times of overrun of the water content of the engine oil, F_{Limit value}The total number of the historical engine oil pressure overrun times, the historical engine oil temperature overrun times and the historical engine oil water content overrun times is obtained;

the engine oil replacement mileage is obtained by inquiring an engine oil replacement interval table of the engine oil model in an engine oil physicochemical database, the engine oil running mileage is the mileage operated by replacing new engine oil, the engine oil replacement time point can be specifically obtained from the CRM module, the standard mileage at the replacement time point is recorded, and the standard mileage obtained by subtracting the standard mileage at the replacement time point from the standard mileage at the current time point is the engine oil running mileage.

When the engine oil replacement early warning is carried out, the engine oil replacement early warning method specifically comprises the following steps:

when f is_{Residual life of engine oil}When being less than predetermined machine oil life-span early warning value, propelling movement machine oil is changed suggestion to customer APP, need refuel (add machine oil) the information of customer simultaneously according to customer machine oil initial filling information and machine oil historical change information, generate machine oil change information propelling movement to corresponding brand maintenance website, brand maintenance website receives machine oil change information and feeds back relevant machine oil change preferential package to business service module, and business service module gives customer APP the preferential package propelling movement.

When f is_{Residual life of engine oil}And when the engine oil quality is equal to 0, an engine oil replacement alarm is sent to a client APP and an instrument, and the APP displays that the engine oil quality is lower than a normal requirement, so that the engine and the safety of a user are protected, the user asks to replace the engine oil in time, and the user is advised to go to a xx site, a telephone xx.

In a second aspect, referring to fig. 3, an embodiment of the present application provides a vehicle oil life real-time prediction apparatus for performing the vehicle oil life real-time prediction method mentioned in the first aspect, the apparatus including:

the historical information extraction unit is used for obtaining the historical number of times of exceeding the limit of the oil pressure, the historical number of times of exceeding the limit of the oil temperature and the historical number of times of exceeding the limit of the water content of the oil;

the engine oil viscosity ratio monitoring unit is used for monitoring and obtaining the real-time viscosity of the engine oil and calculating and obtaining a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;

and the engine oil residual life calculating unit is used for calculating and obtaining the engine oil residual life according to the engine oil pressure historical overrun times, the engine oil temperature historical overrun times, the engine oil water content historical overrun times, the real-time viscosity ratio, the engine oil viscosity ratio upper limit value, the engine oil viscosity ratio lower limit value, the engine oil replacement mileage and the engine oil operation mileage.

In the embodiment of the application, the viscosity of the engine oil is monitored, the historical conditions of various data of the engine oil are recorded, a plurality of factors are comprehensively evaluated, the service life of the engine oil of the vehicle is reasonably predicted, and the engine oil monitoring system has the advantages of low cost, convenience in operation and high accuracy.

Specifically, the system is based on an engine oil remaining life calculation formula, which is:

wherein the content of the first and second substances,

f_{residual life of engine oil}For remaining life of engine oil, f₀Mileage is changed for engine oil, lambda is real-time viscosity ratio, lambda_{Upper limit of}As the upper limit value of the viscosity ratio of the engine oil, lambda_{Lower limit of}Is the lower limit value of the viscosity ratio of the engine oil, a is the ratio of the operating mileage of the engine oil to the replacement mileage of the engine oil, F₁For the number of engine oil pressure history overruns, F₂For the number of engine oil temperature history overruns, F₃The historical number of times of overrun of the water content of the engine oil, F_{Limit value}The engine oil temperature history overrun times and the engine oil water content history overrun times are the sum of the engine oil pressure history overrun times, the engine oil temperature history overrun times and the engine oil water content history overrun times.

Furthermore, the device also comprises a real-time monitoring unit and a historical data statistical unit;

the real-time monitoring unit is used for monitoring the engine oil pressure, the engine oil temperature and the oil water content in real time;

the historical data statistical unit is used for comparing each real-time engine oil pressure obtained by monitoring with a preset engine oil pressure threshold value, and counting the historical number of times of exceeding the limit of the engine oil pressure;

the historical data statistical unit is also used for comparing each real-time engine oil temperature obtained by monitoring with a preset engine oil temperature threshold value, and counting the historical number of times of exceeding the limit of the engine oil temperature;

the historical data statistical unit is also used for comparing the water content of each piece of real-time engine oil obtained through monitoring with a preset engine oil water content threshold value, and counting the historical number of times of exceeding the limit of the water content of the obtained engine oil.

Furthermore, the device also comprises a prompt message issuing unit;

the prompt information issuing unit is used for issuing an engine oil replacement prompt when the remaining life of the engine oil is lower than a preset engine oil life early warning value;

the prompt information issuing unit is also used for issuing engine oil replacement information when the residual service life of the engine oil is lower than a preset engine oil service life early warning value;

the prompt information issuing unit is also used for issuing an engine oil replacement alarm when the residual service life of the engine oil is equal to 0; wherein the content of the first and second substances,

the oil change information includes oil initial filling information and oil history change information.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.