CN113006900B

CN113006900B - Engine oil dilution measuring method and device

Info

Publication number: CN113006900B
Application number: CN201911328409.5A
Authority: CN
Inventors: 胡洪涛; 闫立虎; 刘刚; 王红丹; 屈伟; 罗伟; 唐会鹏; 王焕军; 刘俊刚; 牛少松
Original assignee: Honeycomb Power System Jiangsu Co ltd
Current assignee: Honeycomb Power System Jiangsu Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2022-03-08
Anticipated expiration: 2039-12-20
Also published as: CN113006900A

Abstract

The embodiment of the application provides a method and a device for measuring engine oil dilution, wherein the method comprises the following steps: acquiring engine oil temperature measurement data, engine oil pressure measurement data and rotating speed measurement information; based on the measured working condition data table, if the target engine oil temperature data and the target rotating speed information which are respectively matched with the engine oil temperature measured data and the rotating speed measured information are detected to exist in the measured working condition data table, acquiring target engine oil pressure data which are matched with the target engine oil temperature data and the target rotating speed information from the measured working condition data table; determining target engine oil pressure measurement data matched with the target engine oil temperature data and the target rotating speed information from the engine oil pressure measurement data; and comparing the target engine oil pressure measurement data with the target engine oil pressure data to generate prompt information for prompting whether the engine oil is diluted or not. The method provided by the embodiment of the application can overcome the problem that whether the engine oil is diluted or not can not be timely and effectively determined in the prior art.

Description

Engine oil dilution measuring method and device

Technical Field

The embodiment of the application relates to the technical field of engines, in particular to a method and a device for measuring engine oil dilution of an engine.

Background

At present, with the improvement of living standard of people, automobiles become popular commodities and walk into thousands of households. The oil consumption of the engine is the key, and with the technical development, the direct injection engine is mostly adopted as a power source in the current automobile, but the direct injection engine has the inherent characteristics that fuel oil is directly injected in the cylinder, part of the fuel oil is bound on the cylinder wall and cannot volatilize and participate in combustion in time, and the fuel oil flows into an oil pan along the cylinder barrel, so that the viscosity of the engine oil in the oil pan is reduced, the engine oil is diluted, and the engine cannot be fully lubricated.

Therefore, the direct injection engine has engine oil dilution, and at present, the engine oil dilution is detected by taking out an oil sample and measuring in a laboratory, but the method cannot timely and effectively determine whether the engine is diluted or not, so that the abrasion of each friction pair of the engine is caused, and the scrapping risk of the engine is further improved.

Disclosure of Invention

The embodiment of the application provides a method and a device for measuring engine oil dilution, which are used for overcoming the problem that whether the engine oil is diluted or not cannot be timely and effectively determined in the prior art.

In a first aspect, an embodiment of the present application provides an engine oil dilution measurement method, including:

acquiring engine oil temperature measurement data, engine oil pressure measurement data and rotating speed measurement information;

based on a measurement condition data table, if target engine oil temperature data and target rotating speed information which are respectively matched with the engine oil temperature measurement data and the rotating speed measurement information are detected to exist in the measurement condition data table, target engine oil pressure data which are matched with the target engine oil temperature data and the target rotating speed information are obtained from the measurement condition data table, wherein the measurement condition data table is generated by a plurality of historical engine oil temperature data, a plurality of historical rotating speed information and a plurality of historical engine oil pressure data which are obtained through measurement when engine oil is normal, and one of the historical engine oil temperature data and one of the historical rotating speed information uniquely corresponds to one of the historical engine oil pressure data;

determining target engine oil pressure measurement data matched with the target engine oil temperature data and the target rotating speed information from the engine oil pressure measurement data;

and comparing the target engine oil pressure measurement data with the target engine oil pressure data to generate prompt information for prompting whether engine oil is diluted or not.

In one possible design, before acquiring target oil pressure data matching both the target oil temperature data and the target rotation speed information from the measurement condition data table based on the measurement condition data table if it is detected that the target oil temperature data and the target rotation speed information respectively matching the oil temperature measurement data and the rotation speed measurement information exist in the measurement condition data table, the method further includes:

obtaining the plurality of historical oil temperature data, the plurality of historical rotational speed information and the plurality of historical oil pressure data;

dividing the plurality of historical rotating speed information into rotating speed intervals to obtain a plurality of target rotating speed intervals;

determining target rotation speed information corresponding to each target rotation speed interval from the plurality of historical rotation speed information;

determining at least two target historical engine oil temperature data corresponding to the target rotating speed information from the plurality of historical engine oil temperature data, and taking the target historical engine oil temperature data as the target engine oil temperature data;

determining target historical oil pressure data corresponding to each target oil temperature data from the plurality of historical oil pressure data, and using the target historical oil pressure data as the target oil pressure data;

generating the measuring working condition data table according to a plurality of target rotating speed information corresponding to the target rotating speed intervals, a plurality of target engine oil temperature data corresponding to the target rotating speed information and a plurality of target engine oil pressure data corresponding to the target engine oil temperature data;

the target rotating speed information, the target engine oil temperature data corresponding to the target rotating speed information and the target engine oil pressure data corresponding to the target engine oil temperature data are used as a measuring working condition, and judging conditions of whether engine oil is diluted under a plurality of measuring working conditions are stored in the measuring working condition data table.

In one possible embodiment, the speed interval includes: a first rotating speed interval, a second rotating speed interval and a third rotating speed interval;

the determining the target rotation speed information corresponding to each target rotation speed interval from the plurality of historical rotation speed information comprises:

according to the first rotating speed interval, acquiring a plurality of first rotating speed points matched with the first rotating speed interval from the plurality of historical rotating speed information, and taking any one of the plurality of first rotating speed points as a first target rotating speed point, wherein the first target rotating speed point is the target rotating speed information corresponding to the first rotating speed interval in the plurality of historical rotating speed information;

according to the second rotating speed interval, acquiring a plurality of second rotating speed points matched with the second rotating speed interval from the plurality of historical rotating speed information, and taking any one of the plurality of second rotating speed points as a second target rotating speed point, wherein the second target rotating speed point is the target rotating speed information corresponding to the second rotating speed interval in the plurality of historical rotating speed information;

according to the third rotating speed interval, a plurality of third rotating speed points matched with the third rotating speed interval are obtained from the plurality of historical rotating speed information, any one of the third rotating speed points is used as a third target rotating speed point, and the third target rotating speed point is the target rotating speed information corresponding to the third rotating speed interval in the plurality of historical rotating speed information.

In one possible design, the determining at least two target historical oil temperature data corresponding to the target rotational speed information from the plurality of historical oil temperature data includes:

according to the first target rotating speed point, acquiring a plurality of first target historical engine oil temperature data corresponding to the first target rotating speed point from the plurality of historical engine oil temperature data;

determining a first temperature and a second temperature from the plurality of first target historical oil temperature data, wherein the first temperature and the second temperature are at least two target oil temperature data corresponding to the first target rotating speed point;

according to the second target rotating speed point, acquiring a plurality of second target historical engine oil temperature data corresponding to the second target rotating speed point from the plurality of historical engine oil temperature data;

determining a third temperature and a fourth temperature from the plurality of second target historical oil temperature data, wherein the third temperature and the fourth temperature are at least two target oil temperature data corresponding to the second target rotating speed point;

according to the third target rotating speed point, acquiring a plurality of third target historical engine oil temperature data corresponding to the third target rotating speed point from the plurality of historical engine oil temperature data;

and determining a fifth temperature and a sixth temperature from the plurality of third target historical oil temperature data, wherein the fifth temperature and the sixth temperature are at least two target oil temperature data corresponding to the third target rotating speed point.

In one possible design, the obtaining target engine oil pressure data matching both the target engine oil temperature data and the target rotation speed information from the measured operating condition data table includes:

and respectively acquiring first target oil pressure data matched with a first temperature time phase corresponding to the first target rotating speed point, second target oil pressure data matched with a second temperature time phase corresponding to the first target rotating speed point, third target oil pressure data matched with a third temperature time phase corresponding to the second target rotating speed point, fourth target oil pressure data matched with a fourth temperature time phase corresponding to the second target rotating speed point, fifth target oil pressure data matched with a fifth temperature time phase corresponding to the third target rotating speed point and sixth target oil pressure data matched with a sixth temperature time phase corresponding to the third target rotating speed point from the measurement working condition data table.

In one possible design, the target oil pressure measurement data includes at least a first target oil pressure measurement data, a second target oil pressure measurement data, a third target oil pressure measurement data, a fourth target oil pressure measurement data, a fifth target oil pressure measurement data, and a sixth target oil pressure measurement data;

comparing the target engine oil pressure measurement data with the target engine oil pressure data, and generating prompt information for prompting whether engine oil is diluted or not, wherein the prompt information comprises the following steps:

and if any condition that the first target oil pressure measurement data is larger than the first target oil pressure data, the second target oil pressure measurement data is larger than the second target oil pressure data, the third target oil pressure measurement data is larger than the third target oil pressure data, the fourth target oil pressure measurement data is larger than the fourth target oil pressure data, the fifth target oil pressure measurement data is larger than the fifth target oil pressure data, and the sixth target oil pressure measurement data is larger than the sixth target oil pressure data is satisfied, generating prompt information for prompting engine oil dilution.

In one possible design, after comparing the target oil pressure measurement data with the target oil pressure data, the method further includes:

and if the first target oil pressure measurement data is larger than the first target oil pressure data, the second target oil pressure measurement data is larger than the second target oil pressure data, the third target oil pressure measurement data is larger than the third target oil pressure data, the fourth target oil pressure measurement data is larger than the fourth target oil pressure data, the fifth target oil pressure measurement data is larger than the fifth target oil pressure data, and the sixth target oil pressure measurement data is larger than the sixth target oil pressure data, generating prompt information for prompting the serious dilution of the engine oil, and broadcasting the prompt information for prompting the serious dilution of the engine oil in a voice mode.

In one possible design, the obtaining of the oil temperature measurement data, the oil pressure measurement data, and the rotational speed measurement information includes:

the method comprises the steps of acquiring engine oil temperature measurement data acquired and sent by an engine oil temperature sensor in real time, wherein the engine oil temperature sensor acquires the engine oil temperature measurement data based on an engine oil temperature acquisition signal after receiving the engine oil temperature acquisition signal for indicating the engine oil temperature sensor to execute engine oil temperature acquisition operation;

the method comprises the steps that engine oil pressure measurement data collected and sent by an engine oil pressure sensor in real time are obtained, wherein the engine oil pressure sensor obtains the engine oil pressure measurement data based on the engine oil pressure collection signal after receiving an engine oil pressure collection signal used for indicating the engine oil pressure sensor to execute engine oil pressure collection operation;

the method comprises the steps of obtaining rotating speed measurement information collected and sent by a crankshaft rotating speed sensor in real time, wherein the crankshaft rotating speed sensor obtains the rotating speed measurement information based on the rotating speed instruction detection after receiving a rotating speed instruction used for instructing the crankshaft rotating speed sensor to execute rotating speed detection operation.

In one possible design, after generating the prompt message for prompting whether the engine oil is diluted, the method further includes:

and displaying the prompt information for prompting whether the engine oil is diluted through a vehicle instrument display screen.

In a second aspect, an embodiment of the present application provides an engine oil dilution measuring device, including:

the first acquisition module is used for acquiring engine oil temperature measurement data;

the second acquisition module is used for acquiring engine oil pressure measurement data;

the third acquisition module is used for acquiring rotating speed measurement information;

a target engine oil pressure data acquisition module, configured to, based on a measurement condition data table, acquire target engine oil pressure data that matches the target engine oil temperature data and the target rotational speed information from the measurement condition data table if it is detected that the target engine oil temperature data and the target rotational speed information that match the engine oil temperature measurement data and the rotational speed measurement information respectively exist in the measurement condition data table, where the measurement condition data table is generated by a plurality of historical engine oil temperature data, a plurality of historical rotational speed information, and a plurality of historical engine oil pressure data that are acquired through measurement when engine oil is normal, and one of the historical engine oil temperature data and one of the historical rotational speed information uniquely corresponds to one of the historical engine oil pressure data;

the target engine oil pressure measurement data acquisition module is used for determining target engine oil pressure measurement data matched with the target engine oil temperature data and the target rotating speed information from the engine oil pressure measurement data;

and the first prompt information generation module is used for comparing the target engine oil pressure measurement data with the target engine oil pressure data and generating prompt information for prompting whether engine oil is diluted or not.

The engine oil dilution measuring method and apparatus provided in this embodiment detect whether target engine oil temperature data and target rotational speed information respectively matching the engine oil temperature measurement data and the rotational speed measurement information exist in the measurement condition data table by acquiring engine oil temperature measurement data, engine oil pressure volume data, and rotational speed information measurement information, and based on a measurement condition data table generated from a plurality of historical engine oil temperature data, a plurality of historical rotational speed information, and a plurality of historical engine oil pressure data, and if so, acquire target engine oil pressure data matching both the target engine oil temperature data and the target rotational speed information from the measurement condition data table, then determine target engine oil pressure measurement data matching both the target engine oil temperature data and the target rotational speed information from the engine oil pressure measurement data, and compare the target engine oil pressure measurement data with the target engine oil pressure data, whether the engine oil is diluted is determined, so that the engine can work in a good and sufficient lubricating environment, and whether the engine oil is diluted can be timely and effectively reminded by generating prompt information for prompting whether the engine oil is diluted, so that the abrasion of each friction pair of the engine is avoided, and the scrapping risk of the engine is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic flow chart of a method for measuring engine oil dilution according to an embodiment of the present disclosure;

FIG. 2 is a schematic flow chart diagram illustrating a method for measuring engine oil dilution according to another embodiment of the present application;

FIG. 3 is a schematic flow chart illustrating a method for measuring engine oil dilution according to yet another embodiment of the present application;

FIG. 4 is a schematic diagram of a speed interval in a method for measuring engine oil dilution according to another embodiment of the present application;

FIG. 5 is a schematic flow chart of a method for measuring engine oil dilution according to another embodiment of the present disclosure;

FIG. 6 is a block diagram of an engine oil dilution measuring device according to an embodiment of the present disclosure;

FIG. 7 is a block diagram of an engine oil dilution measurement system according to an embodiment of the present disclosure.

Description of the reference numerals

Controller (ECU): 701, performing heat treatment on the mixture; an engine oil temperature sensor: 702; an engine oil pressure sensor: 703; a crankshaft speed sensor: 704; vehicle instrument display screen: 705; the oil pump: 706; an oil pan: 707; friction pair 708.

Detailed Description

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.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

At present, a direct injection engine is mostly adopted by an automobile as a power source, but the direct injection engine has inherent characteristics, fuel oil is directly injected in an in-cylinder mode, part of the fuel oil is bound to a cylinder wall and cannot volatilize and participate in combustion in time, but flows into an oil pan 707 along a cylinder barrel, so that the viscosity of the engine oil in the oil pan is reduced, the engine oil is diluted, and the engine cannot be fully lubricated.

In order to overcome the above problems and effectively determine whether engine oil is diluted in time, an embodiment of the present application provides an engine oil dilution measuring method, and fig. 1 is a schematic flow diagram of the engine oil dilution measuring method provided in the embodiment of the present application.

Referring to fig. 1, the engine oil dilution measuring method includes:

s101, obtaining engine oil temperature measurement data, engine oil pressure measurement data and rotating speed measurement information.

In this embodiment, an execution main body for implementing the engine oil dilution measurement method may be a controller, and specifically may be an electronic control unit ECU (701) installed on a vehicle, in order to implement real-time control of engine oil lubrication performance, and further implement intelligent and accurate closed-loop control of engine oil dilution measurement, and ensure that an engine always works in a good and sufficient lubrication environment, in this embodiment, the engine oil temperature, the engine oil pressure, and the crankshaft speed sensor may be fed back in real time, that is, the ECU controls the engine oil temperature, the engine oil pressure, and the crankshaft speed sensor in real time, and further obtains engine oil temperature measurement data, the engine oil pressure measurement data, and the crankshaft speed measurement information detected by the engine oil temperature sensor, the engine oil pressure sensor, and the crankshaft speed sensor, respectively.

Specifically, the mode of acquiring the oil temperature measurement data, the oil pressure measurement data, and the rotation speed measurement information by the ECU may be:

the method comprises the steps of obtaining engine oil temperature measurement data which are collected and sent by an engine oil temperature sensor in real time, wherein the engine oil temperature sensor obtains the engine oil temperature measurement data based on the engine oil temperature collection signal after receiving an engine oil temperature collection signal used for indicating the engine oil temperature sensor to execute engine oil temperature collection operation.

The method comprises the steps of obtaining engine oil pressure measurement data which are collected and sent by an engine oil pressure sensor in real time, wherein the engine oil pressure sensor obtains the engine oil pressure measurement data based on the engine oil pressure collection signal after receiving an engine oil pressure collection signal used for indicating the engine oil pressure sensor to execute engine oil pressure collection operation.

Specifically, the rotating speed measurement information comprises rotating speed data, namely the rotating speed, specifically, the ECU sends an engine oil temperature acquisition signal to an engine oil temperature sensor, and the engine oil temperature sensor is responsible for executing and feeds back actual engine oil temperature data to the ECU; the ECU sends an engine oil pressure acquisition signal to the engine oil pressure sensor, and the engine oil pressure sensor synchronously feeds back specific execution conditions to the ECU, for example, the actual engine oil pressure data is fed back to the ECU in real time; the ECU sends a rotating speed instruction for detecting the engine to the crankshaft rotating speed sensor, and the crankshaft rotating speed sensor is used for detecting the accurate rotating speed of the engine and is responsible for feeding rotating speed data back to the ECU in real time for supporting the ECU to judge the working condition of the engine. Through the combination of the ECU, the engine oil temperature sensor, the engine oil pressure sensor and the crankshaft rotating speed sensor, the dilution condition of the engine oil can be measured in real time or in real time, and the lubricating property of the engine oil can be controlled in real time.

S102, based on a measurement working condition data table, if it is detected that target engine oil temperature data and target rotating speed information which are respectively matched with the engine oil temperature measurement data and the rotating speed measurement information exist in the measurement working condition data table, target engine oil pressure data which are matched with the target engine oil temperature data and the target rotating speed information are obtained from the measurement working condition data table, wherein the measurement working condition data table is generated by a plurality of historical engine oil temperature data, a plurality of historical rotating speed information and a plurality of historical engine oil pressure data which are obtained through measurement when engine oil is normal, and one of the historical engine oil temperature data and one of the historical rotating speed information uniquely corresponds to one of the historical engine oil pressure data.

In the embodiment, whether the engine oil of the engine is diluted under different operating conditions of the engine is monitored through the engine oil temperature measurement data collected and sent by the engine oil temperature sensor, the engine oil pressure measurement data sent by the engine oil pressure sensor and the rotating speed measurement information sent by the crankshaft rotating speed sensor, wherein the load of the operating conditions is mainly determined according to the engine oil temperature and the engine oil pressure of the engine under each rotating speed condition.

Specifically, according to the obtained engine oil temperature measurement data, engine oil pressure measurement data and rotation speed measurement information, according to the engine oil temperature measurement data and the rotation speed measurement information, by searching target engine oil temperature data and target rotating speed information which are consistent with engine oil temperature measurement data and rotating speed measurement information from a measurement working condition data table calibrated by a pre-test, if the target engine oil pressure data matched with the target engine oil temperature data and the target rotating speed information are searched, it is indicated that whether the engine oil is diluted or not can be judged under the working condition corresponding to the engine oil temperature measurement data and the engine oil pressure measurement data, before judging whether the engine oil is diluted, firstly determining the target engine oil pressure data corresponding to the working condition, and acquiring target engine oil pressure data matched with the target engine oil temperature data and the target rotating speed information from the measurement working condition data table.

S103, determining target engine oil pressure measurement data matched with the target engine oil temperature data and the target rotating speed information from the engine oil pressure measurement data;

and S104, comparing the target engine oil pressure measurement data with the target engine oil pressure data to generate prompt information for prompting whether the engine oil is diluted or not.

In this embodiment, since one engine oil temperature measurement data, one engine oil pressure measurement data, and one rotation speed measurement information correspond to one operating condition, when the engine oil temperature measurement data and the rotation speed measurement information are determined, the engine oil pressure measurement data corresponding to the operating condition can be determined, so when target engine oil pressure data matching both the target engine oil temperature data and the target rotation speed information is obtained from the measurement operating condition data table, at this time, the engine oil temperature measurement data under the operating condition is the same as the target engine oil temperature data to be searched, and the rotation speed measurement information is the same as the target rotation speed information to be searched, and at the same time, the target engine oil pressure measurement data matching both the target engine oil temperature data and the target rotation speed information can be searched from the engine oil pressure measurement data, and at this time, under the same operating condition, there are: the engine oil temperature measurement data, the rotating speed measurement information and the corresponding target engine oil pressure measurement data are obtained, and the target engine oil temperature data, the target rotating speed information and the corresponding target engine oil pressure data are also obtained. By comparing the target engine oil pressure measurement data and the target engine oil pressure data under the same working condition, whether the engine oil is diluted or not is determined, prompt information for prompting whether the engine oil is diluted or not is generated, and the problem that whether the engine oil is diluted or not can be timely and effectively determined.

Specifically, how to obtain the data table based on the measured operating conditions may be referred to as fig. 2, where fig. 2 is a schematic flow chart of a method for measuring dilution of engine oil according to another embodiment of the present application. On the basis of the above embodiments, the present embodiment describes how to obtain a data table based on measurement conditions in detail. Before acquiring target engine oil pressure data matched with the target engine oil temperature data and the target rotating speed information from the measurement working condition data table based on the measurement working condition data table if the target engine oil temperature data and the target rotating speed information respectively matched with the engine oil temperature measurement data and the rotating speed measurement information are detected to exist in the measurement working condition data table, the method further comprises the following steps:

s201, obtaining a plurality of historical engine oil temperature data, a plurality of historical rotating speed information and a plurality of historical engine oil pressure data;

s202, dividing the plurality of historical rotating speed information into rotating speed intervals to obtain a plurality of target rotating speed intervals;

s203, determining target rotating speed information corresponding to each target rotating speed interval from the plurality of historical rotating speed information;

s204, determining at least two target historical engine oil temperature data corresponding to the target rotating speed information from the plurality of historical engine oil temperature data, and taking the target historical engine oil temperature data as the target engine oil temperature data;

s205, determining target historical oil pressure data corresponding to each target oil temperature data from the plurality of historical oil pressure data, and taking the target historical oil pressure data as the target oil pressure data;

s206, generating the measuring working condition data table according to a plurality of target rotating speed information corresponding to the target rotating speed intervals, a plurality of target engine oil temperature data corresponding to the target rotating speed information and a plurality of target engine oil pressure data corresponding to the target engine oil temperature data; the target rotating speed information, the target engine oil temperature data corresponding to the target rotating speed information and the target engine oil pressure data corresponding to the target engine oil temperature data are used as a measuring working condition, and judging conditions of whether engine oil is diluted under a plurality of measuring working conditions are stored in the measuring working condition data table.

In this embodiment, according to the obtained multiple pieces of historical rotation speed information, rotation speed intervals are divided for the multiple pieces of historical rotation speed information to obtain multiple target rotation speed intervals, and then a rotation speed point corresponding to each target rotation speed interval in the multiple pieces of historical rotation speed information is determined to be the target rotation speed information. And according to the obtained plurality of historical engine oil temperature data, determining at least two target historical engine oil temperature data corresponding to the target rotating speed information from the plurality of historical engine oil temperature data so as to determine the target engine oil temperature data. Determining target historical oil pressure data corresponding to each target oil temperature data from the plurality of historical oil pressure data according to the plurality of acquired historical oil pressure data to determine target oil pressure data, wherein, a target rotating speed information, a target engine oil temperature data and an engine oil pressure data are in one-to-one correspondence, the target rotating speed information, the target engine oil temperature data corresponding to the target rotating speed information and the target engine oil pressure data corresponding to the target engine oil temperature data are used as a measuring working condition, then forming a measuring working condition data table according to the target rotating speed information, the target engine oil temperature data and the target engine oil pressure data, and the judgment condition of whether the engine oil is diluted under a plurality of measuring working conditions is stored in the measuring working condition data table. Therefore, whether the engine oil running under the current working condition is diluted or not can be determined through the measuring working condition data table according to the measured rotating speed measuring information and the measured engine oil temperature data under a certain working condition.

In practical applications, the target rotation speed interval can be divided into a low rotation speed interval, a medium and low rotation speed interval and a medium rotation speed interval. The ECU divides each target rotating speed interval into rotating speed points according to a plurality of pieces of received rotating speed information sent by the crankshaft rotating speed sensor as a plurality of pieces of historical rotating speed information, and determines the rotating speed point (target rotating speed information) corresponding to each section of target rotating speed interval in the plurality of pieces of historical rotating speed information, wherein the determination of the rotating speed point can be randomly selected or preset, and is not limited herein. For example, the rotating speed information sent by the crankshaft rotating speed sensor is from low rotating speed to medium and low rotating speed to medium rotating speed, and the junction point of the rotating speed intervals is used as the rotating speed point of the engine in each rotating speed interval; or, randomly selecting a point on each section of the rotating speed interval as a rotating speed point of the engine.

And then according to the rotating speed point, performing temperature division on the obtained multiple pieces of oil temperature data as multiple pieces of historical oil temperature data, and determining oil pressure data corresponding to each divided temperature from the obtained multiple pieces of oil pressure data as multiple pieces of historical oil pressure data.

Specifically, temperature division is performed on a plurality of historical engine oil temperature data according to the rotating speed point of each section of target rotating speed interval, wherein the target engine oil temperature data is obtained by respectively corresponding two temperature points to a low rotating speed interval, a medium and low rotating speed interval and a medium rotating speed interval, measurement of engine oil pressure data is performed on each temperature point in each section of target rotating speed interval, target engine oil pressure data corresponding to each temperature point in each section of target rotating speed interval is obtained, and then whether engine oil is diluted is determined. For example, when the engine oil pressure measurement data is greater than the target engine oil pressure data, it is indicated that the engine oil is diluted, and then prompt information for prompting engine dilution is generated.

In the embodiment, the measured oil pressure measurement data and the target oil pressure data are compared by using the historical oil pressure data corresponding to each divided temperature and combining the target oil pressure data corresponding to the temperature of the rotating speed in the test data to determine whether the engine oil dilution problem exists under the measurement working condition, that is, if the measured oil pressure data is greater than the target oil pressure data (calibration amount), it indicates that the engine oil has a dilution problem, and if the measured oil pressure data is less than the target oil pressure data (calibration amount), the engine oil is not diluted under the measuring working condition, the engine can work in a good lubricating environment, and the ECU also generates a prompt for the dilution of the engine oil, where the prompt may include the engine oil being (already) diluted or the engine oil being (not) diluted.

In the embodiment, by acquiring engine oil temperature measurement data, engine oil pressure quantity data, and rotational speed information, and based on a measurement condition data table generated from a plurality of historical engine oil temperature data, a plurality of historical rotational speed information, and a plurality of historical engine oil pressure data, detecting whether target engine oil temperature data and target rotational speed information respectively matching the engine oil temperature measurement data and the rotational speed measurement information exist in the measurement condition data table, if so, acquiring target engine oil pressure data matching both the target engine oil temperature data and the target rotational speed information from the measurement condition data table, then determining target engine oil pressure measurement data matching both the target engine oil temperature data and the target rotational speed information from the engine oil pressure measurement data, and comparing the target engine oil pressure measurement data with the target engine oil pressure data, whether the engine oil is diluted is determined, so that the engine can work in a good and sufficient lubricating environment, and whether the engine oil is diluted can be timely and effectively reminded by generating prompt information for prompting whether the engine oil is diluted, so that the abrasion of each friction pair of the engine is avoided, and the scrapping risk of the engine is reduced.

In one possible design, after generating the prompt message for prompting whether the engine oil is diluted, the method further includes: and displaying the prompt information for prompting whether the engine oil is diluted through a vehicle instrument display screen.

In this embodiment, in order to remind the user whether the engine oil of the vehicle is diluted in time, the prompt information of whether the engine oil of the vehicle is diluted is displayed through the vehicle instrument display screen, and then whether the engine oil of the vehicle needs to be maintained is determined. And the measurement of whether the engine oil is diluted is real-time, the timely control of the engine oil lubricating performance is realized, the waste of excessive maintenance due to good engine oil lubricating performance or the risk of not timely replacing the engine oil due to serious dilution is avoided, whether the vehicle engine works in an excellent lubricating environment or not can be timely determined, and the effective measurement of the engine oil dilution is realized.

Before determining whether the engine oil needs to be serviced, it is necessary to determine the engine oil degradation factor, as shown in FIG. 3. Fig. 3 is a schematic flow chart of an engine oil dilution measuring method according to still another embodiment of the present application, and this embodiment details, on the basis of the above embodiment, for example, on the basis of the embodiment shown in fig. 1 or fig. 2, the determination of the target rotation speed information corresponding to each target rotation speed interval in the rotation speed information in S203. Wherein the target rotation speed interval includes: a first rotating speed interval, a second rotating speed interval and a third rotating speed interval;

s301, according to the first rotating speed interval, acquiring a plurality of first rotating speed points matched with the first rotating speed interval from the plurality of historical rotating speed information, and taking any one of the plurality of first rotating speed points as a first target rotating speed point, wherein the first target rotating speed point is target rotating speed information corresponding to the first rotating speed interval in the plurality of historical rotating speed information;

s302, according to the second rotating speed interval, obtaining a plurality of second rotating speed points matched with the second rotating speed interval from the plurality of historical rotating speed information, and taking any one of the plurality of second rotating speed points as a second target rotating speed point, wherein the second target rotating speed point is the target rotating speed information corresponding to the second rotating speed interval in the plurality of historical rotating speed information;

and S303, acquiring a plurality of third rotation speed points matched with the third rotation speed interval from the plurality of historical rotation speed information according to the third rotation speed interval, and taking any one of the third rotation speed points as a third target rotation speed point, wherein the third target rotation speed point is the target rotation speed information corresponding to the third rotation speed interval in the plurality of historical rotation speed information.

In this embodiment, according to three preset rotational speed intervals, the operating condition of the engine is divided into the measurement points of the engine oil temperature corresponding to each interval, that is, the target rotational speed interval includes: the method comprises a first rotating speed interval, a second rotating speed interval and a third rotating speed interval, wherein a certain first rotating speed point of an engine corresponding to the first rotating speed interval is used as a first target rotating speed point according to the first rotating speed interval, a certain second rotating speed point of the engine corresponding to the second rotating speed interval is used as a second target rotating speed point according to the second rotating speed interval, and a certain third rotating speed point of the engine corresponding to the third rotating speed interval is used as a third target rotating speed point according to the third rotating speed interval.

For example, referring to fig. 4, OA may be a first speed interval (i.e., a low speed interval), a is determined as a low speed point of the engine and is a first target speed point, AB is a second speed interval (i.e., a medium-low speed interval), B is determined as a medium-low speed point of the engine and is a second target speed point, BC is a third speed interval (i.e., a medium speed interval), and C is determined as a medium speed point of the engine and is a third target speed point.

After obtaining the information of each target rotation speed, the engine oil temperature under the working condition may be specifically determined, as shown in fig. 5, where fig. 5 is a schematic flow chart of an engine oil dilution measurement method provided in another embodiment of the present application. The present embodiment describes how to determine the target historical oil temperature data in S204 in detail on the basis of the above-described embodiment, for example, on the basis of the embodiment described in fig. 3. Determining at least two target historical oil temperature data corresponding to the target rotational speed information from the plurality of historical oil temperature data, including:

s501, according to the first target rotating speed point, acquiring a plurality of first target historical engine oil temperature data corresponding to the first target rotating speed point from the plurality of historical engine oil temperature data;

s502, determining a first temperature and a second temperature from the plurality of first target historical engine oil temperature data, wherein the first temperature and the second temperature are at least two target engine oil temperature data corresponding to the first target rotating speed point;

s503, according to the second target rotating speed point, acquiring a plurality of second target historical engine oil temperature data corresponding to the second target rotating speed point from the plurality of historical engine oil temperature data;

s504, determining a third temperature and a fourth temperature from the plurality of second target historical engine oil temperature data, wherein the third temperature and the fourth temperature are at least two target engine oil temperature data corresponding to the second target rotating speed point;

s505, according to the third target rotating speed point, obtaining a plurality of third target historical engine oil temperature data corresponding to the third target rotating speed point from the plurality of historical engine oil temperature data;

s506, determining a fifth temperature and a sixth temperature from the plurality of third target historical engine oil temperature data, wherein the fifth temperature and the sixth temperature are at least two target engine oil temperature data corresponding to the third target rotating speed point.

In this embodiment, according to each target rotation speed point, target historical engine oil temperature data corresponding to each target rotation speed point is respectively obtained from the plurality of historical engine oil temperature data, where the target historical engine oil temperature data corresponding to the first target rotation speed point is a first temperature and a second temperature, the target historical engine oil temperature data corresponding to the second target rotation speed point is a third temperature and a fourth temperature, and the target historical engine oil temperature data corresponding to the third target rotation speed point is a fifth temperature and a sixth temperature.

After obtaining each target rotation speed point and temperature data, target oil pressure data of the generator under the condition can be specifically determined, and in one possible design, the target oil pressure data matched with the target oil temperature data and the target rotation speed information is obtained from the measurement working condition data table, and the method comprises the following steps: and respectively acquiring first target oil pressure data matched with a first temperature time phase corresponding to the first target rotating speed point, second target oil pressure data matched with a second temperature time phase corresponding to the first target rotating speed point, third target oil pressure data matched with a third temperature time phase corresponding to the second target rotating speed point, fourth target oil pressure data matched with a fourth temperature time phase corresponding to the second target rotating speed point, fifth target oil pressure data matched with a fifth temperature time phase corresponding to the third target rotating speed point and sixth target oil pressure data matched with a sixth temperature time phase corresponding to the third target rotating speed point from the measurement working condition data table.

In this embodiment, two temperature points are randomly selected according to the rotation speed points determined in each rotation speed interval, and the engine oil pressure of the engine is measured respectively. Specifically, a certain low rotation speed point of the engine corresponding to a low rotation speed interval (a first rotation speed interval) is used as a first target rotation speed point, two temperature points are randomly selected from engine oil temperature data sent by an engine oil temperature sensor to be a first temperature and a second temperature, and engine oil pressure data corresponding to the engine under the operating conditions of the first temperature and the second temperature of the low rotation speed point are respectively obtained from historical engine oil pressure data to be a first target engine oil pressure data and a second target engine oil pressure data; taking a certain middle-low rotation speed point of the engine corresponding to a middle-low rotation speed interval (a second rotation speed interval) as a second target rotation speed point, randomly selecting two temperature points from engine oil temperature data sent by an engine oil temperature sensor to be a third temperature and a fourth temperature, and respectively acquiring engine oil pressure data, corresponding to the engine under the operating conditions of the third temperature and the fourth temperature of the middle-low rotation speed point, from historical engine oil pressure data to be third target engine oil pressure data and fourth target engine oil pressure data; and taking a certain middle rotating speed point of the engine corresponding to the middle rotating speed interval (third rotating speed interval) as a third target rotating speed point, randomly selecting two temperature points from the engine oil temperature data sent by the engine oil temperature sensor to be a fifth temperature and a sixth temperature, and respectively obtaining the engine oil pressure data corresponding to the engine under the operating conditions of the fifth temperature and the sixth temperature of the middle and low rotating speed points from the historical engine oil pressure data to be fifth target engine oil pressure data and sixth target engine oil pressure data.

The first temperature is not equal to the second temperature, the third temperature is not equal to the fourth temperature, the fifth temperature is not equal to the sixth temperature, but the values of the first temperature, the second temperature, the third temperature, the fourth temperature, the fifth temperature and the sixth temperature are not limited.

After the engine oil pressure data of the engine under each working condition is obtained, whether the engine oil is diluted or not can be accurately obtained in time, and in a possible design, on the basis of the above embodiment, the present embodiment describes in detail how to generate the prompt information about whether the engine oil is diluted or not in S104. The target oil pressure measurement data at least comprises first target oil pressure measurement data, second target oil pressure measurement data, third target oil pressure measurement data, fourth target oil pressure measurement data, fifth target oil pressure measurement data and sixth target oil pressure measurement data; comparing the target engine oil pressure measurement data with the target engine oil pressure data, and generating prompt information for prompting whether engine oil is diluted or not, wherein the prompt information comprises the following steps:

In this embodiment, before the prompt information indicating whether the engine oil is diluted is generated, a measurement condition data table is generated through a large amount of experimental data, and calibration data of engine oil dilution under various conditions is stored in the measurement condition data table, that is, the critical point of engine oil dilution, so as to determine the engine oil dilution degree.

Specifically, the measurement of the engine oil pressure at the first temperature and the second temperature corresponding to the first rotation point, the measurement of the engine oil pressure at the third temperature and the fourth temperature corresponding to the second rotation point, and the measurement of the engine oil pressure at the fifth temperature and the sixth temperature corresponding to the third rotation point are divided into 6 measurement conditions, that is, the engine oil pressure measurement condition at the first temperature corresponding to the first rotation point, the engine oil pressure measurement condition at the second temperature corresponding to the first rotation point, the engine oil pressure measurement condition at the third temperature corresponding to the second rotation point, the engine oil pressure measurement condition at the fourth temperature corresponding to the second rotation point, the engine oil pressure measurement condition at the fifth temperature corresponding to the third rotation point, and the engine oil pressure measurement condition at the sixth temperature corresponding to the third rotation point. Because the working conditions are different, the standard judgment is different when the condition for judging whether the engine oil is diluted is different.

For the 6 measurement working conditions, respectively acquiring first target oil pressure data matched with a first temperature time phase corresponding to a first rotating speed point, second target oil pressure data matched with a second temperature time phase corresponding to the first rotating speed point, third target oil pressure data matched with a third temperature time phase corresponding to a second rotating speed point, fourth target oil pressure data matched with a fourth temperature time phase corresponding to the second rotating speed point, fifth preset oil pressure data matched with a fifth temperature time phase corresponding to the third rotating speed point and sixth target oil pressure data matched with a sixth temperature time phase corresponding to the third rotating speed point from a preset data table, and if the first oil pressure data is larger than the first target oil pressure data, oil dilution is indicated; if the second engine oil pressure data is larger than the second target engine oil pressure data, engine oil dilution is indicated; if the third oil pressure data is greater than the third target oil pressure data, indicating that the oil is diluted; if the fourth engine oil pressure data is greater than the fourth target engine oil pressure data, engine oil dilution is indicated; if the fifth engine oil pressure data is greater than the fifth target engine oil pressure data, engine oil dilution is indicated; the sixth oil pressure data is greater than the sixth target oil pressure data, indicating oil dilution. And the ECU generates prompt information according to the judgment result, wherein the prompt information is used for indicating whether the engine oil is diluted or not, so that the timely control of the engine oil lubricating performance is realized, the engine oil maintenance opportunity is ensured, and the waste of excessive maintenance due to good engine oil lubricating performance is avoided.

In this embodiment, if the above six conditions are all satisfied, it indicates that there is a risk that the engine oil is seriously diluted and not replaced in time, specifically, the ECU cumulatively counts each measured condition of the engine, obtains the engine oil pressure data under each measured condition, compares the engine oil pressure data with a target value (preset engine oil pressure data, including first target engine oil pressure data, second target engine oil pressure data, and third target engine oil pressure data), outputs an engine oil dilution result (engine oil dilution condition exists or engine oil is not diluted), and transmits the engine oil dilution result to the vehicle instrument display screen, and if all of the 6 measured conditions are satisfied, that is, the first engine oil pressure data is greater than the first target engine oil pressure data, the second engine oil pressure data is greater than the second target engine oil pressure data, the third engine oil pressure data is greater than the third target engine oil pressure data, and the fourth engine oil pressure data is greater than the fourth target engine oil pressure data, And if the fifth engine oil pressure data is greater than the fifth target engine oil pressure data and the sixth engine oil pressure data is greater than the sixth target engine oil pressure data, indicating that the engine oil is seriously diluted, generating prompt information for prompting that the engine oil is seriously diluted, displaying the prompt information for prompting that the engine oil is seriously diluted, and synchronously carrying out voice prompt to broadcast that the engine oil is seriously diluted. The voice broadcast can be broadcast by a broadcaster arranged in a display screen of the vehicle instrument controlled by the ECU. Effective measurement of engine oil dilution is achieved, enabling timely determination of when a vehicle engine should be serviced.

In practical application, the specific measurement strategy is as follows:

firstly, according to the collected rotating speed information, 3 rotating speed points of the engine rotating speed are determined, and the method is shown in fig. 4: OA can be a first speed range (i.e., a low speed range), a is determined as a low speed point of the engine, i.e., a first speed point, AB is a second speed range (i.e., a medium-low speed range), B is determined as a medium-low speed point of the engine, i.e., a second speed point, BC is a third speed range (i.e., a medium speed range), and C is determined as a medium speed point of the engine, i.e., a third speed point.

Then, aiming at the rotating speed points determined in each section of rotating speed interval, two temperature points are determined, and the engine oil pressure is measured respectively, specifically as shown in table 1:

TABLE 1

The measured oil pressure values in table 1 are the oil pressure data, the target oil pressure values are the target oil pressure data, and the criteria are determined as the determination conditions. Specifically, the corresponding T in the sequence number 1_{Is low in}Is a first temperature, T_{Height of}At a second temperature, K_A-lowIs the first engine oil pressure data, K_{Biao A-Low}For the first target oil pressure data, the condition for judging whether the engine oil is diluted is K_A-low>K_{Biao A-Low}(ii) a The other numbers correspond to the meanings of the symbols in the same manner.

In the embodiment, whether the engine oil is diluted or not is determined through the engine oil pressure data, and whether the engine works in a good and sufficient lubricating environment or not can be determined in time according to the judgment of the engine oil pressure corresponding to the temperature measuring point in different rotating speed intervals, so that the lubricating performance of the engine oil can be controlled timely.

In order to implement the engine oil dilution measuring method, the present embodiment provides an engine oil dilution measuring device, and referring to fig. 6, fig. 6 is a block diagram of a structure of the engine oil dilution measuring device provided in the present embodiment. The engine oil dilution measuring device 60 includes: a first obtaining module 601, a second obtaining module 602, a third obtaining module 603, a target oil pressure data obtaining module 604, a target oil pressure measurement data obtaining module 605, and a first prompt information generating module 606; the first acquisition module 601 is used for acquiring engine oil temperature measurement data; a second obtaining module 602, configured to obtain oil pressure measurement data; a third obtaining module 603, configured to obtain rotation speed measurement information; a target engine oil pressure data obtaining module 604, configured to, based on a measurement condition data table, obtain target engine oil pressure data that matches the target engine oil temperature data and the target rotational speed information from the measurement condition data table if it is detected that the target engine oil temperature data and the target rotational speed information that match the engine oil temperature measurement data and the rotational speed measurement information respectively exist in the measurement condition data table, where the measurement condition data table is generated by a plurality of historical engine oil temperature data, a plurality of historical rotational speed information, and a plurality of historical engine oil pressure data that are obtained by measurement when the engine oil is normal, and one of the historical engine oil temperature data and one of the historical rotational speed information uniquely corresponds to one of the historical engine oil pressure data; a target oil pressure measurement data obtaining module 605, configured to determine, from the oil pressure measurement data, target oil pressure measurement data that matches both the target oil temperature data and the target rotation speed information; a first prompt information generating module 606, configured to compare the target engine oil pressure measurement data with the target engine oil pressure data, and generate a prompt information for prompting whether engine oil is diluted.

In this embodiment, a first obtaining module 601, a second obtaining module 602, a third obtaining module 603, a target oil pressure data obtaining module 604, a target oil pressure measurement data obtaining module 605, and a first prompt information generating module 606 are provided, and are configured to obtain oil temperature measurement data, oil pressure quantity data, and rotation speed information measurement information, and detect whether target oil temperature data and target rotation speed information respectively matching the oil temperature measurement data and the rotation speed measurement information exist in a measurement condition data table based on a measurement condition data table generated by a plurality of historical oil temperature data, a plurality of historical rotation speed information, and a plurality of historical oil pressure data, and if so, obtain target oil pressure data matching both the target oil temperature data and the target rotation speed information from the measurement condition data table, and then determining target engine oil pressure measurement data matched with the target engine oil temperature data and the target rotating speed information from the engine oil pressure measurement data, determining whether the engine oil is diluted or not by comparing the target engine oil pressure measurement data with the target engine oil pressure data, further ensuring that the engine can work in a good and sufficient lubricating environment, and timely and effectively reminding whether the engine oil is diluted or not by generating prompt information for prompting whether the engine oil is diluted or not, so that the abrasion of each friction pair of the engine is avoided, and further the scrapping risk of the engine is reduced.

The apparatus provided in this embodiment may be used to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.

In one possible design, the apparatus further includes: the device comprises a historical data acquisition module, a target rotating speed interval determination module, a target rotating speed information determination module, a target engine oil temperature data determination module, a target engine oil pressure data determination module and a measurement working condition data table generation module; a historical data acquisition module, configured to acquire the plurality of historical oil temperature data, the plurality of historical rotational speed information, and the plurality of historical oil pressure data before acquiring, from the measurement condition data table, target oil temperature data and target rotational speed information that are respectively matched with the oil temperature measurement data and the rotational speed measurement information when it is detected that the target oil temperature data and the target rotational speed information exist in the measurement condition data table; the target rotating speed interval determining module is used for dividing the rotating speed intervals of the plurality of historical rotating speed information to obtain a plurality of target rotating speed intervals; the target rotating speed information determining module is used for determining target rotating speed information corresponding to each target rotating speed interval from the plurality of historical rotating speed information; a target engine oil temperature data determining module, configured to determine at least two pieces of target historical engine oil temperature data corresponding to the target rotation speed information from the plurality of pieces of historical engine oil temperature data, and use the target historical engine oil temperature data as the target engine oil temperature data; a target oil pressure data determining module, configured to determine target historical oil pressure data corresponding to each target oil temperature data from the plurality of historical oil pressure data, and use the target historical oil pressure data as the target oil pressure data; a measurement condition data table generating module, configured to generate the measurement condition data table according to a plurality of target rotation speed information corresponding to the plurality of target rotation speed intervals, a plurality of target engine oil temperature data corresponding to the plurality of target rotation speed information, and a plurality of target engine oil pressure data corresponding to the plurality of target engine oil temperature data; the target rotating speed information, the target engine oil temperature data corresponding to the target rotating speed information and the target engine oil pressure data corresponding to the target engine oil temperature data are used as a measuring working condition, and judging conditions of whether engine oil is diluted under a plurality of measuring working conditions are stored in the measuring working condition data table.

In one possible embodiment, the speed interval includes: a first rotating speed interval, a second rotating speed interval and a third rotating speed interval; the target rotating speed information determining module is specifically configured to:

according to the first rotating speed interval, acquiring a plurality of first rotating speed points matched with the first rotating speed interval from the plurality of historical rotating speed information, and taking any one of the plurality of first rotating speed points as a first target rotating speed point, wherein the first target rotating speed point is the target rotating speed information corresponding to the first rotating speed interval in the plurality of historical rotating speed information; according to the second rotating speed interval, acquiring a plurality of second rotating speed points matched with the second rotating speed interval from the plurality of historical rotating speed information, and taking any one of the plurality of second rotating speed points as a second target rotating speed point, wherein the second target rotating speed point is the target rotating speed information corresponding to the second rotating speed interval in the plurality of historical rotating speed information; and according to the third rotating speed interval, acquiring a plurality of third rotating speed points matched with the third rotating speed interval from the plurality of historical rotating speed information, and taking any one of the third rotating speed points as a third target rotating speed point, wherein the third target rotating speed point is the target rotating speed information corresponding to the third rotating speed interval in the plurality of historical rotating speed information.

In one possible design, the target oil temperature data determination module is specifically configured to:

according to the first target rotating speed point, acquiring a plurality of first target historical engine oil temperature data corresponding to the first target rotating speed point from the plurality of historical engine oil temperature data; determining a first temperature and a second temperature from the plurality of first target historical oil temperature data, wherein the first temperature and the second temperature are at least two target oil temperature data corresponding to the first target rotating speed point; according to the second target rotating speed point, acquiring a plurality of second target historical engine oil temperature data corresponding to the second target rotating speed point from the plurality of historical engine oil temperature data; determining a third temperature and a fourth temperature from the plurality of second target historical oil temperature data, wherein the third temperature and the fourth temperature are at least two target oil temperature data corresponding to the second target rotating speed point; according to the third target rotating speed point, acquiring a plurality of third target historical engine oil temperature data corresponding to the third target rotating speed point from the plurality of historical engine oil temperature data; and determining a fifth temperature and a sixth temperature from the plurality of third target historical oil temperature data, wherein the fifth temperature and the sixth temperature are at least two target oil temperature data corresponding to the third target rotating speed point.

In one possible design, the target oil pressure data acquisition module is specifically configured to:

and respectively acquiring first target oil pressure data matched with a first temperature time phase corresponding to the first target rotating speed point, second preset target oil pressure data matched with a second temperature time phase corresponding to the first target rotating speed point, third target oil pressure data matched with a third temperature time phase corresponding to the second target rotating speed point, fourth target oil pressure data matched with a fourth temperature time phase corresponding to the second target rotating speed point, fifth target oil pressure data matched with a fifth temperature time phase corresponding to the third target rotating speed point and sixth target oil pressure data matched with a sixth temperature time phase corresponding to the third target rotating speed point from the measurement working condition data table.

In one possible design, the target oil pressure measurement data includes at least a first target oil pressure measurement data, a second target oil pressure measurement data, a third target oil pressure measurement data, a fourth target oil pressure measurement data, a fifth target oil pressure measurement data, and a sixth target oil pressure measurement data; the first prompt information generating module 106 is specifically configured to: and when any one condition of the first target oil pressure measurement data being larger than the first target oil pressure data, the second target oil pressure measurement data being larger than the second target oil pressure data, the third target oil pressure measurement data being larger than the third target oil pressure data, the fourth target oil pressure measurement data being larger than the fourth target oil pressure data, the fifth target oil pressure measurement data being larger than the fifth target oil pressure data, and the sixth target oil pressure measurement data being larger than the sixth target oil pressure data is satisfied, generating prompt information for prompting engine oil dilution.

In one possible design, the apparatus further includes: a second prompt message generation module; and the second prompt information generation module is used for generating prompt information for prompting the severe dilution of the engine oil and voice broadcasting the prompt information for prompting the severe dilution of the engine oil when the first target oil pressure measurement data is larger than the first target oil pressure data, the second target oil pressure measurement data is larger than the second target oil pressure data, the third target oil pressure measurement data is larger than the third target oil pressure data, the fourth target oil pressure measurement data is larger than the fourth target oil pressure data, the fifth target oil pressure measurement data is larger than the fifth target oil pressure data and the sixth target oil pressure measurement data is larger than the sixth target oil pressure data after comparing the target oil pressure measurement data with the target oil pressure data.

In one possible design, the first obtaining module is specifically configured to: the method comprises the steps of acquiring engine oil temperature measurement data acquired and sent by an engine oil temperature sensor in real time, wherein the engine oil temperature sensor acquires the engine oil temperature measurement data based on an engine oil temperature acquisition signal after receiving the engine oil temperature acquisition signal for indicating the engine oil temperature sensor to execute engine oil temperature acquisition operation; the second obtaining module is specifically configured to: the method comprises the steps that engine oil pressure measurement data collected and sent by an engine oil pressure sensor in real time are obtained, wherein the engine oil pressure sensor obtains the engine oil pressure measurement data based on the engine oil pressure collection signal after receiving an engine oil pressure collection signal used for indicating the engine oil pressure sensor to execute engine oil pressure collection operation; a third obtaining module, specifically configured to: the method comprises the steps of obtaining rotating speed measurement information collected and sent by a crankshaft rotating speed sensor in real time, wherein the crankshaft rotating speed sensor obtains the rotating speed measurement information based on the rotating speed instruction detection after receiving a rotating speed instruction used for instructing the crankshaft rotating speed sensor to execute rotating speed detection operation.

In one possible design, the apparatus further includes: a display module; the display module is used for displaying the prompt information for prompting whether the engine oil is diluted through a vehicle instrument display screen after the prompt information for prompting whether the engine oil is diluted is generated.

In order to implement the engine oil dilution measuring method, the embodiment provides a controller; the controller is used for executing the engine oil dilution measuring method according to the embodiment of the engine oil dilution measuring method.

In this embodiment, the controller detects whether target oil temperature data and target rotational speed information respectively matching the oil temperature measurement data and the rotational speed measurement information exist in the measurement condition data table by acquiring oil temperature measurement data, oil pressure quantity data, and rotational speed information measurement information, and based on a measurement condition data table generated from a plurality of historical oil temperature data, a plurality of historical rotational speed information, and a plurality of historical oil pressure data, and if so, acquires target oil pressure data matching both the target oil temperature data and the target rotational speed information from the measurement condition data table, then determines target oil pressure measurement data matching both the target oil temperature data and the target rotational speed information from the oil pressure measurement data, and compares the target oil pressure measurement data with the target oil pressure data, whether the engine oil is diluted is determined, so that the engine can work in a good and sufficient lubricating environment, and whether the engine oil is diluted can be timely and effectively reminded by generating prompt information for prompting whether the engine oil is diluted, so that the abrasion of each friction pair of the engine is avoided, and the scrapping risk of the engine is reduced.

The controller provided in this embodiment may be used to implement the technical solutions of the above method embodiments, and the implementation principle and technical effects are similar, which are not described herein again.

In one possible design, the controller is an electronic control unit.

In order to realize the engine oil dilution measuring method, the embodiment provides an engine oil dilution measuring system. Referring to fig. 7, fig. 7 is a block diagram of an engine oil dilution measurement system according to an embodiment of the present disclosure; the engine oil dilution measurement system may be integrated with a multifunction module, for example, the engine oil dilution measurement system 70 may include: a controller 701, an oil temperature sensor 702, an oil pressure sensor 703, a crankshaft speed sensor 704, and a vehicle meter display 705 as described in the previous embodiments; the controller is respectively connected with the engine oil temperature sensor, the engine oil pressure sensor, the crankshaft rotating speed sensor and the vehicle instrument display screen in a communication mode, and the controller is used for: acquiring engine oil temperature measurement data, engine oil pressure measurement data and rotating speed measurement information; based on a measurement condition data table, if target engine oil temperature data and target rotating speed information which are respectively matched with the engine oil temperature measurement data and the rotating speed measurement information are detected to exist in the measurement condition data table, target engine oil pressure data which are matched with the target engine oil temperature data and the target rotating speed information are obtained from the measurement condition data table, wherein the measurement condition data table is generated by a plurality of historical engine oil temperature data, a plurality of historical rotating speed information and a plurality of historical engine oil pressure data which are obtained through measurement when engine oil is normal, and one of the historical engine oil temperature data and one of the historical rotating speed information uniquely corresponds to one of the historical engine oil pressure data; determining target engine oil pressure measurement data matched with the target engine oil temperature data and the target rotating speed information from the engine oil pressure measurement data; comparing the target engine oil pressure measurement data with the target engine oil pressure data to generate prompt information for prompting whether engine oil is diluted or not; displaying the prompt information for prompting whether engine oil is diluted or not through a vehicle instrument display screen; the engine oil temperature sensor is used for sending the engine oil temperature data; the engine oil pressure sensor is used for sending the engine oil pressure data; the crankshaft rotating speed sensor is used for sending the rotating speed information; and the vehicle instrument display screen is used for displaying prompt information about whether engine oil is diluted or not.

The engine oil dilution measuring system provided by the embodiment can be used for implementing the technical scheme of any one of the method embodiments, the implementation principle and the technical effect are similar, and details are not repeated here.

In practical applications, the oil supplied by the oil pump 706 flows through the oil cooler, the oil filter, the oil temperature sensor, and the oil pressure sensor shown in fig. 7, and finally reaches each friction pair of the engine to provide oil lubrication; the engine oil temperature sensor is responsible for detecting the temperature of engine oil flowing through the engine oil temperature sensor and feeding the engine oil temperature data back to the ECU in real time, the engine oil pressure sensor is responsible for detecting the pressure of the engine oil flowing through the engine oil temperature sensor and feeding the engine oil pressure data back to the ECU in real time, the crankshaft rotating speed sensor is used for detecting the accurate rotating speed of the engine and feeding the rotating speed data (rotating speed information) back to the ECU in real time, and the ECU comprehensively judges the engine oil dilution condition according to the fed-back rotating speed data and the engine oil temperature data and combines the engine oil pressure data, compares the engine oil dilution condition with a target value and outputs the engine oil dilution condition to a vehicle instrument display screen. If the judged engine oil dilution condition does not exceed the target value, only displaying on a vehicle instrument display screen, if the judged engine oil dilution condition exceeds the target value, displaying on the vehicle instrument display screen and simultaneously carrying out voice reminding, so that real-time measurement and reminding of the engine oil dilution condition can be realized, the engine is ensured to work in the optimal lubrication environment, and the normal operation of the engine is ensured.

Specifically, firstly, a controller sends an engine oil temperature acquisition signal to an engine oil temperature sensor to indicate the engine oil temperature sensor to execute engine oil temperature acquisition operation, engine oil temperature data of the engine oil temperature sensor is fed back to the controller in real time, and the controller receives the engine oil temperature data sent by the engine oil temperature sensor; the controller sends an engine oil pressure acquisition signal to the engine oil pressure sensor to indicate the engine oil pressure sensor to execute engine oil pressure acquisition operation, the engine oil pressure sensor feeds back engine oil pressure data to the controller in real time, and the controller receives the engine oil pressure data sent by the engine oil pressure sensor; the controller sends a rotating speed instruction for detecting the engine to the crankshaft rotating speed sensor, the crankshaft rotating speed sensor is instructed to execute rotating speed detection operation, the crankshaft rotating speed sensor feeds the rotating speed information back to the controller in real time, and the controller receives the rotating speed information sent by the crankshaft rotating speed sensor. The controller determines a rotating speed point corresponding to each section of target rotating speed interval in the rotating speed information according to the rotating speed information, then performs temperature division on the engine oil temperature data according to the rotating speed point, determines the engine oil pressure data corresponding to each divided temperature, generates prompt information whether the engine oil is diluted according to the engine oil pressure data corresponding to each divided temperature, sends the prompt information whether the engine oil is diluted to a vehicle instrument display screen, the vehicle instrument display screen receives the prompt information whether the engine oil is diluted sent by the controller, displays that the engine oil is diluted or not, and can report the prompt information whether the engine oil is diluted or not through voice, and can timely inform a user whether the engine oil is diluted or not.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An engine oil dilution measurement method, characterized by comprising:

according to the measuring working condition data table, determining target engine oil pressure measuring data matched with the target engine oil temperature data and the target rotating speed information from the engine oil pressure measuring data;

comparing the target engine oil pressure measurement data with the target engine oil pressure data to generate prompt information for prompting whether engine oil is diluted or not;

before acquiring target engine oil pressure data matched with the target engine oil temperature data and the target rotating speed information from the measurement working condition data table based on the measurement working condition data table if the target engine oil temperature data and the target rotating speed information respectively matched with the engine oil temperature measurement data and the rotating speed measurement information are detected to exist in the measurement working condition data table, the method further comprises the following steps:

2. The method of claim 1, wherein the speed interval comprises: a first rotating speed interval, a second rotating speed interval and a third rotating speed interval;

3. The method of claim 2, wherein said determining at least two target historical oil temperature data corresponding to said target speed information from said plurality of historical oil temperature data comprises:

4. The method of claim 3, wherein the obtaining target oil pressure data from the measured operating condition data table that matches both the target oil temperature data and the target speed information comprises:

5. The method of claim 4, wherein the target oil pressure measurement data comprises at least a first target oil pressure measurement data, a second target oil pressure measurement data, a third target oil pressure measurement data, a fourth target oil pressure measurement data, a fifth target oil pressure measurement data, and a sixth target oil pressure measurement data;

6. The method of claim 5, wherein after comparing the target oil pressure measurement data to the target oil pressure data, the method further comprises:

7. The method of claim 1, wherein said obtaining oil temperature measurement data, oil pressure measurement data, and rotational speed measurement information comprises:

8. The method of any of claims 1-7, wherein after generating the reminder message to indicate whether the engine oil is diluted, the method further comprises:

9. An engine oil dilution measuring device, comprising:

the target engine oil pressure measurement data acquisition module is used for determining target engine oil pressure measurement data matched with the target engine oil temperature data and the target rotating speed information from the engine oil pressure measurement data according to the measurement working condition data table;

the first prompt information generation module is used for comparing the target engine oil pressure measurement data with the target engine oil pressure data and generating prompt information for prompting whether engine oil is diluted or not;

the device further comprises: the device comprises a historical data acquisition module, a target rotating speed interval determination module, a target rotating speed information determination module, a target engine oil temperature data determination module, a target engine oil pressure data determination module and a measurement working condition data table generation module;

the historical data acquisition module is used for acquiring a plurality of historical engine oil temperature data, a plurality of historical engine oil rotation speed information and a plurality of historical engine oil pressure data before acquiring target engine oil pressure data matched with the target engine oil temperature data and the target rotation speed information from the measuring working condition data table based on the measuring working condition data table and detecting that the target engine oil temperature data and the target rotation speed information are respectively matched with the engine oil temperature measuring data and the rotation speed measuring information in the measuring working condition data table; the target rotating speed interval determining module is used for dividing the rotating speed intervals of the plurality of historical rotating speed information to obtain a plurality of target rotating speed intervals;

the target rotating speed information determining module is used for determining target rotating speed information corresponding to each target rotating speed interval from the plurality of historical rotating speed information; a target engine oil temperature data determining module, configured to determine at least two pieces of target historical engine oil temperature data corresponding to the target rotation speed information from the plurality of pieces of historical engine oil temperature data, and use the target historical engine oil temperature data as the target engine oil temperature data;

the target oil pressure data determining module is used for determining target historical oil pressure data corresponding to each target oil temperature data from the plurality of historical oil pressure data, and taking the target historical oil pressure data as the target oil pressure data;

the measurement working condition data table generating module is used for generating the measurement working condition data table according to a plurality of target rotating speed information corresponding to the target rotating speed intervals, a plurality of target engine oil temperature data corresponding to the target rotating speed information and a plurality of target engine oil pressure data corresponding to the target engine oil temperature data; the target rotating speed information, the target engine oil temperature data corresponding to the target rotating speed information and the target engine oil pressure data corresponding to the target engine oil temperature data are used as a measuring working condition, and judging conditions of whether engine oil is diluted under a plurality of measuring working conditions are stored in the measuring working condition data table.