CN115909539A - Method and device for calculating performance loss of engine oil - Google Patents
Method and device for calculating performance loss of engine oil Download PDFInfo
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Abstract
The application relates to the technical field of automobiles, in particular to a method and a device for calculating the performance loss of an engine oil, and the method comprises the following steps: collecting running parameter information of a preset number of vehicles to be tested under different preset working conditions in the running process that the vehicles to be tested run from a test starting point to a preset number of test points, wherein different running mileage corresponds to the test starting point; calculating standard loss factors of different preset working conditions aiming at the engine oil performance loss based on the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions; and calculating the service life proportion of the engine oil based on the corresponding driving mileage and standard loss factors of the target vehicle under different preset working conditions in the driving process. This application is based on the standard loss factor that different preset operating modes correspond, and convenient and fast carries out comparatively accurate prediction to the machine oil life-span of target vehicle to navigating mate in time masters the machine oil performance loss condition.
Description
Technical Field
The application relates to the technical field of automobiles, in particular to a method and a device for calculating performance loss of engine oil.
Background
At the present stage, in order to ensure that the engine can normally perform daily work, the engine oil needs to be replaced regularly, and in the engine oil replacement work, the oil life needs to be predicted, and the oil life prediction generally adopts the following method:
first, the oil is changed according to a fixed mileage or operating time. Secondly, the engine oil of the vehicle is extracted for physicochemical detection and analysis, and each physicochemical index and the decay degree of the engine oil are determined, so that whether the engine oil needs to be replaced or not is determined. And thirdly, determining the viscosity of the engine oil according to the ratio of the pressure change value of the engine oil to the rotating speed of the engine, and then comparing the viscosity of the engine oil with a threshold value and generating an early warning signal. Fourthly, calculating and predicting the oil life of the single vehicle according to the oil loss mechanism and the oil loss factor
Based on the traditional engine oil life prediction technology, the situation that a convenient and quick engine oil life prediction scheme is lacked at present can be found.
Disclosure of Invention
The application provides a method and a device for calculating engine oil performance loss, which can conveniently and quickly predict the engine oil service life of a target vehicle based on standard loss factors corresponding to different preset working conditions, so that a driver can master the engine oil performance loss condition in time.
To achieve the above object, the present application provides the following aspects.
In a first aspect, the present application provides a method for calculating a performance loss of an oil, the method including:
collecting running parameter information of a preset number of vehicles to be tested under different preset working conditions in the running process that the vehicles to be tested run from a test starting point to a preset number of test points, wherein different running mileage corresponds to each test point and each test starting point;
calculating standard loss factors of different preset working conditions for engine oil performance loss based on the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
calculating the service life proportion of the engine oil based on the corresponding driving mileage and the standard loss factor of the target vehicle under different preset working conditions in the driving process; wherein the content of the first and second substances,
the preset number of the vehicles to be tested or the test points is at least not less than the number of the preset working conditions.
Specifically, the step of calculating standard loss factors of different preset working conditions for engine oil performance loss based on the driving mileage corresponding to different preset working conditions and the driving parameter information corresponding to different preset working conditions includes:
respectively calculating the standard engine oil residual life of a plurality of vehicles to be tested in the running process corresponding to at least one test point based on a preset engine oil residual life calculation formula;
based on the residual service life of the standard engine oil, calculating and obtaining individual loss factors of the vehicles to be tested for engine oil performance loss under different preset working conditions by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
and calculating to obtain standard loss factors aiming at the engine oil performance loss under different preset working conditions based on the individual loss factors aiming at the engine oil performance loss under different preset working conditions of each vehicle to be tested.
Specifically, the step of calculating and obtaining the standard loss factors of the different preset working conditions for the engine oil performance loss based on the individual loss factors of the different preset working conditions for the engine oil performance loss of each vehicle to be tested comprises the following steps:
and calculating the average value of the individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions, and taking the average value as the standard loss factor for the engine oil performance loss under different preset working conditions.
Specifically, the step of calculating standard loss factors of different preset working conditions for engine oil performance loss based on the driving mileage corresponding to different preset working conditions and the driving parameter information corresponding to different preset working conditions includes:
respectively calculating the standard engine oil residual life of at least one vehicle to be tested in the running process corresponding to a plurality of test points based on a preset engine oil residual life calculation formula;
based on the standard engine oil residual life corresponding to a plurality of test points, calculating and obtaining individual loss factors of the corresponding vehicle to be tested for engine oil performance loss under different preset working conditions by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
and calculating to obtain standard loss factors aiming at the engine oil performance loss under different preset working conditions based on the corresponding individual loss factors aiming at the engine oil performance loss under different preset working conditions of the vehicle to be tested.
Specifically, the step of calculating and obtaining the standard loss factors of the different preset working conditions for the engine oil performance loss based on the individual loss factors of the different preset working conditions for the engine oil performance loss of each vehicle to be tested comprises the following steps:
if the number of the vehicles to be tested is larger than 1, calculating the average value of individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions, and taking the average value as a standard loss factor for the engine oil performance loss under different preset working conditions;
and if the number of the vehicles to be tested is equal to 1, corresponding individual loss factors of the vehicles to be tested on different preset working conditions for the engine oil performance loss to be used as standard loss factors of the vehicles to be tested on different preset working conditions for the engine oil performance loss.
Further, after calculating the service life proportion of the oil based on the driving mileage and the standard loss factor corresponding to the target vehicle under different preset working conditions during the driving process, the method further comprises the following steps:
and calculating to obtain the remaining proportion of the service life of the engine oil based on the service life proportion of the engine oil.
Further, after the oil life remaining proportion is calculated and obtained based on the oil life usage proportion, the method further comprises the following steps:
and if the residual proportion of the service life of the engine oil is lower than a preset residual proportion threshold value of the service life of the engine oil, issuing engine oil replacement prompt information.
In a second aspect, the present application provides an oil performance loss calculation apparatus, the apparatus comprising:
the data acquisition module is used for acquiring running parameter information under different preset working conditions in the running process that a preset number of vehicles to be tested run from a test starting point to a preset number of test points, and different running mileage corresponds to the test starting point;
the loss factor calculation module is used for calculating and obtaining standard loss factors of different preset working conditions for the performance loss of the engine oil based on the driving mileage corresponding to different preset working conditions and the driving parameter information corresponding to different preset working conditions;
the engine oil life calculation module is used for calculating the service proportion of the engine oil life based on the corresponding driving mileage and the standard loss factor of the target vehicle under different preset working conditions in the driving process; wherein, the first and the second end of the pipe are connected with each other,
the preset number of the vehicles to be tested or the test points is at least not less than the number of the preset working conditions.
Specifically, the loss factor calculation module is further configured to calculate standard engine oil remaining lives of the vehicles to be tested in a driving process corresponding to at least one test point respectively based on a preset engine oil remaining life calculation formula;
the loss factor calculation module is further configured to calculate and obtain individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions based on the remaining life of the standard engine oil and by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
the loss factor calculation module is further used for calculating and obtaining standard loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions based on individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions.
Further, the loss factor calculation module is further configured to calculate an average value of individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions, and the average value is used as a standard loss factor for the engine oil performance loss under different preset working conditions.
Specifically, the loss factor calculation module is further configured to calculate the standard remaining oil life of at least one vehicle to be tested in a running process corresponding to the multiple test points based on a preset remaining oil life calculation formula;
the loss factor calculation module is further configured to calculate and obtain individual loss factors of the corresponding vehicle to be tested for engine oil performance loss under different preset working conditions based on the remaining service lives of the standard engine oil corresponding to the multiple test points and by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
the loss factor calculation module is further used for calculating and obtaining standard loss factors of the vehicle to be detected for the engine oil performance loss under different preset working conditions based on corresponding individual loss factors of the vehicle to be detected under different preset working conditions for the engine oil performance loss.
Further, the loss factor calculation module is further configured to calculate an average value of individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions when the number of the vehicles to be tested is greater than 1, and use the average value as a standard loss factor for the engine oil performance loss under different preset working conditions;
and the loss factor calculation module is also used for correspondingly taking the individual loss factors of the vehicles to be tested for the oil performance loss under different preset working conditions as the standard loss factors of the oil performance loss under different preset working conditions when the number of the vehicles to be tested is equal to 1.
Specifically, the engine oil life calculation module is further configured to calculate and obtain an engine oil life remaining proportion based on the engine oil life usage proportion.
Further, the device also comprises an engine oil replacement prompting module;
the engine oil replacement prompt module is used for issuing engine oil replacement prompt information when the engine oil life residual proportion is lower than a preset engine oil life residual proportion threshold value.
The beneficial effect that technical scheme that this application provided brought includes:
the engine oil life prediction method and device based on the different standard loss factors corresponding to the preset working conditions are convenient and fast to predict the engine oil life of the target vehicle accurately, so that a driver can master the engine oil performance loss condition in time.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of steps of a method of oil loss of performance calculation provided in an embodiment of the present application;
fig. 2 is a block diagram of a structure of an oil performance loss calculation device provided in an embodiment of the present application.
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.
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a method and a device for calculating the engine oil performance loss, which are based on standard loss factors corresponding to different preset working conditions, and can conveniently and quickly predict the engine oil service life of a target vehicle, so that a driver can master the engine oil performance loss condition in time.
In order to achieve the technical effects, the general idea of the application is as follows:
a method for calculating the performance loss of engine oil comprises the following steps:
s1, acquiring running parameter information under different preset working conditions in the running process that a preset number of vehicles to be tested run from a test starting point to a preset number of test points, wherein different running mileage corresponds to each test point and each test starting point;
s2, calculating and obtaining standard loss factors of different preset working conditions for the engine oil performance loss based on the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
s3, calculating the service life proportion of the engine oil based on the corresponding driving mileage and standard loss factors of the target vehicle under different preset working conditions in the driving process; wherein the content of the first and second substances,
the preset number of the vehicles to be tested or the test points is at least not less than the number of the preset working conditions.
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
In a first aspect, an embodiment of the present application provides a method for calculating performance loss of an engine oil, where the method includes the following steps:
s1, acquiring running parameter information under different preset working conditions in the running process that a preset number of vehicles to be tested run from a test starting point to a preset number of test points, wherein different running mileage corresponds to each test point and each test starting point;
s2, calculating and obtaining standard loss factors of different preset working conditions for the engine oil performance loss based on the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
s3, calculating the service life proportion of the engine oil based on the corresponding driving mileage and standard loss factors of the target vehicle under different preset working conditions in the driving process; wherein, the first and the second end of the pipe are connected with each other,
the preset number of the vehicles to be tested or the test points is at least not less than the number of the preset working conditions.
This application is based on the condition of traveling to the vehicle that awaits measuring carries out the analysis, obtains the different standard loss factor that predetermines the operating mode and correspond to convenient and fast carries out comparatively accurate prediction to the machine oil life-span of target vehicle, so that navigating mate in time masters the machine oil performance loss condition.
It should be noted that, step S1 and step S2 are explained to describe the principle, and the specific details are as follows:
assuming that the number of preset working conditions to be tested is K, at least one K-element linear equation set needs to be constructed in order to obtain loss factors of the K preset working conditions;
then in the extreme case, there are two cases:
the method comprises the following steps that in the first situation, K vehicles to be tested are driven to 1 test point from the test point, so that driving data for K different driving miles are obtained, and driving parameter information corresponding to the K test points under different preset working conditions is obtained, namely, one K vehicle to be tested is constructed, and a K-element linear equation set of the 1 test point is obtained, so that loss factors corresponding to the K preset working conditions are obtained, and since the number of the vehicles to be tested is K, standard loss factors of the different preset working conditions for the oil performance loss can be obtained and arranged on the basis of the loss factors corresponding to the vehicles to be tested under the preset working conditions, and the specific obtaining mode can be that a corresponding average value or an expected value is obtained through calculation;
and under the second condition, the number of the vehicles to be tested is 1, driving is carried out from the test points to the K test points, so that driving data aiming at K different driving miles is obtained, driving parameter information under different preset working conditions corresponding to the K test points is obtained, namely, the 1 vehicle to be tested is constructed, a K-element linear equation set of the K test points is obtained, and loss factors corresponding to the K preset working conditions are obtained.
It should be noted that the first case and the second case belong to two extreme cases, that is, when the number of vehicles to be tested is 1, the number of test points needs to be at least K;
on the contrary, when the number of the test points is 1, the number of the vehicles to be tested needs at least K;
certainly, in order to improve the data accuracy, the more the number of the vehicles to be tested and the number of the test points are, the higher the accuracy of the final calculation is, and only the case one and the case two are two extreme cases with the least data.
Specifically, the step of calculating standard loss factors of different preset working conditions for engine oil performance loss based on the driving mileage corresponding to different preset working conditions and the driving parameter information corresponding to different preset working conditions includes:
a1, respectively calculating the standard engine oil residual life of a plurality of vehicles to be tested in the running process corresponding to at least one test point based on a preset engine oil residual life calculation formula;
based on the residual service life of the standard engine oil, calculating and obtaining individual loss factors of the vehicles to be tested for engine oil performance loss under different preset working conditions by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
and A3, calculating and obtaining standard loss factors aiming at the engine oil performance loss under different preset working conditions based on individual loss factors aiming at the engine oil performance loss under different preset working conditions of each vehicle to be tested.
Specifically, the step of calculating and obtaining the standard loss factors of the different preset working conditions for the engine oil performance loss based on the individual loss factors of the different preset working conditions for the engine oil performance loss of each vehicle to be tested comprises the following steps:
and calculating the average value of the individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions, and taking the average value as the standard loss factor of the vehicles to be tested for the engine oil performance loss under different preset working conditions.
It should be noted that, in the operations in steps A1 to A3, the corresponding flow is the case one, that is, there are at least K vehicles to be tested, that is, the number of the vehicles to be tested is the same as the number of the preset working conditions, at this time, the number of the test points is at least 1, and the reliability is higher when the number of the test points is larger.
Specifically, the step of calculating standard loss factors of different preset working conditions for engine oil performance loss based on the driving mileage corresponding to different preset working conditions and the driving parameter information corresponding to different preset working conditions includes:
b1, respectively calculating the standard engine oil residual life of at least one vehicle to be tested in the running process corresponding to a plurality of test points based on a preset engine oil residual life calculation formula;
b2, based on the residual service lives of the standard engine oil corresponding to the multiple test points, calculating and obtaining individual loss factors of the corresponding vehicle to be tested for engine oil performance loss under different preset working conditions by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
and B3, calculating and obtaining standard loss factors aiming at the engine oil performance loss under different preset working conditions based on the corresponding individual loss factors aiming at the engine oil performance loss under different preset working conditions of the vehicle to be tested.
Specifically, the step of calculating and obtaining the standard loss factors of the different preset working conditions for the engine oil performance loss based on the individual loss factors of the different preset working conditions for the engine oil performance loss of each vehicle to be tested comprises the following steps:
if the number of the vehicles to be tested is larger than 1, calculating the average value of individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions, and taking the average value as a standard loss factor for the engine oil performance loss under different preset working conditions;
and if the number of the vehicles to be tested is equal to 1, corresponding individual loss factors of the vehicles to be tested on different preset working conditions for the engine oil performance loss to be used as standard loss factors of the vehicles to be tested on different preset working conditions for the engine oil performance loss.
It should be noted that, in the operation in steps B1 to B3, the corresponding flow is the case two, that is, the number of the test points is at least K, that is, the number is at least the same as the number of the preset working conditions, at this time, the number of the vehicles to be tested is at least 1, and the greater the number of the vehicles to be tested, the higher the reliability is;
when the number of the vehicles to be tested is greater than 1, different standard loss factors of the preset working conditions for the engine oil performance loss can be obtained through sorting based on the corresponding loss factors of the vehicles to be tested under each preset working condition, and the specific obtaining mode can be that a corresponding average value or an expected value is obtained through calculation.
Further, after calculating the service life proportion of the engine oil based on the corresponding driving mileage and standard loss factor of the target vehicle under different preset working conditions in the driving process, the method further comprises the following steps:
and S4, calculating to obtain the remaining proportion of the service life of the engine oil based on the service life proportion of the engine oil.
Further, after the remaining proportion of the oil life is calculated and obtained based on the service proportion of the oil life, the method further comprises the following steps:
and S5, if the residual proportion of the service life of the engine oil is lower than a preset residual proportion threshold value of the service life of the engine oil, issuing engine oil replacement prompt information.
Based on the above technical solution, the embodiment of the present application, when implemented specifically, includes the following processes:
the method comprises the following steps of firstly, determining k vehicle typical working conditions according to the market segment of the vehicle, the vehicle operation principle, the driving rule and the driving behavior data of the existing vehicle, wherein the k vehicle typical working conditions are as follows:
Tc(typical condition)＝[tr 1 ,tr 2 ,…,tr k ](ii) a Wherein the content of the first and second substances,
the determination of the k typical conditions may be divided according to the requirements of particular interest.
For example, the following division cases:
in the first case, the k operating conditions are divided according to the universal characteristic diagram.
In the second case, if the driving state is classified according to the driving state of the vehicle, the following is specifically performed:
tr _ full (empty) = [ idle speed, constant speed straight going, acceleration straight going, deceleration straight going, constant speed climbing, acceleration climbing, deceleration climbing, constant speed downhill, acceleration downhill, deceleration downhill.
The third case, as classified by vehicle action (transportation area), is specifically as follows:
tc (typical condition) = [ regional bulk cargo distribution, port transportation,
fast logistics transportation, green transportation, cold chain transportation, sand and stone transportation, hazardous chemical transportation, and special transportation in Yunguchuan area of 8230.
The fourth case, as divided by vehicle function (vehicle type), is as follows:
tr = [ tractor, heavy goods vehicle, heavy engineering vehicle, medium engineering vehicle, heavy special vehicle ].
In a fifth case, as the function (tractor) of a certain vehicle is divided, the following is specifically mentioned:
tr = [ punctual express delivery, long-distance cargo allocation, common special line, regional distribution, coal special line, high-efficiency transportation of hazardous chemical substances, regional distribution of hazardous chemical substances, express delivery transportation, and port container transportation ].
And secondly, selecting k vehicles as vehicles to be tested, which can also be called tracking vehicles or test vehicles, according to the market segment of the vehicles, such as a vehicle type, a certain type of functional vehicle, a certain enterprise, a certain industry and the like, and using the k vehicles as data support objects for calculating and obtaining the loss factor, wherein the vehicle number is = [1,2.. K ].
Thirdly, the loss factor of the engine oil under each working condition is expressed as
Initializing a, in particular as followsOne is as follows:
watch 1
Fourthly, calculating an updated loss factor in real time:
step A, acquiring mileage of k vehicles selected in the step and parameters (such as torque, rotating speed and speed) required by the expression working condition in real time
And B, calculating the mileage of various typical vehicle conditions, such as calculating the mileage of the vehicle in various typical conditions according to the rotating speed and the torque of the vehicle, and representing the following steps:
And C, calculating loss factors of each vehicle to be tested under various typical working conditions according to the following formula, wherein the specific conditions are as follows:
k vehicles to be tested are at No. 1 sampling points, and k typical working conditions are assumed:
wherein, the first and the second end of the pipe are connected with each other,
representing loss factors of the vehicle to be tested under various typical working conditions at the No. 1 sampling point;
f 1 residual life of engine oil The residual service life of the engine oil of the No. 1 sampling point of the No. 1 vehicle to be tested is determined;
f k residual life of engine oil The residual service life of the engine oil of the kth vehicle to be tested at the No. 1 sampling point is shown.
Combining a plurality of sampling points, such as k sampling points, with the above formula (1), the loss factor of each vehicle to be tested under various typical conditions can be calculated, that is, the loss factor corresponding to each vehicle to be tested is obtained
And then, calculating distribution conditions or calculating an average value or calculating tolerance by combining the loss factors of each vehicle to be measured under various typical working conditions, thereby obtaining the standard loss factors under various typical working conditions.
It should be noted that, after the vehicle collects k points on the time axis, the calculation can be collected from the loop according to the requirement, where the loop means that the next k points are used to calculate by the single vehicle
A can be calculated again from 0 to k points, or a new sampling point can be added into the original k sampling points, then one sampling point in the original k sampling points is removed, and then the new k sampling points are used as the bicycle to calculate->
And fifthly, calculating the service life proportion of the engine oil based on the corresponding driving mileage of the target vehicle under different preset working conditions and the standard loss factor in the driving process.
And sixthly, setting an engine oil life residual proportion threshold, and issuing engine oil replacement prompt information if the engine oil life residual proportion of the target vehicle is lower than a preset engine oil life residual proportion threshold.
In the formula (1), f 1 Residual life of engine oil 、...f k Residual life of engine oil The engine oil residual life calculation method is obtained by calculation based on a preset engine oil residual life calculation formula, wherein the engine oil residual life calculation formula is as follows:
the engine oil residual life calculation formula is as follows:
f remaining life of engine oil For the remaining life of the engine oil, f 0 For the engine oil change mileage, λ is the real-time viscosity ratio, λ Upper limit of As the upper limit value of the viscosity ratio of the engine oil, lambda Lower limit of Is the lower limit value of the viscosity ratio of the engine oil, a is the ratio of the operating mileage of the engine oil to the replacement mileage of the engine oil, F 1 For said number of engine oil pressure history overruns, F 2 For said number of engine oil temperature history overruns, F 3 For the number of historical overrun times of the water content of the engine oil, F Limit value The historical number of times of exceeding the limit of the oil pressure, the historical number of times of exceeding the limit of the oil temperature and the historical number of times of exceeding the limit of the water content of the oil are the sum.
When the engine oil residual life calculation formula is utilized, the following operation flows can be matched:
obtaining the historical number of times of exceeding the limit of the pressure of the engine oil, the historical number of times of exceeding the limit of the temperature of the engine oil and the historical number of times of exceeding the limit of the water content of the engine oil;
monitoring the real-time viscosity of the engine oil, and calculating to obtain a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;
and calculating to obtain the residual service life of the engine oil according to the historical number of times of exceeding the pressure of the engine oil, the historical number of times of exceeding the temperature of the engine oil, the historical number of times of exceeding the water content of the engine oil, the real-time viscosity ratio, the upper limit value of the viscosity ratio of the engine oil, the lower limit value of the viscosity ratio of the engine oil, the replacement mileage of the engine oil and the running mileage of the engine oil by matching with a calculation formula of the residual service life of the engine oil.
Of course, it should be noted that f in the formula (1) 1 Remaining life of engine oil 、...f k Residual life of engine oil The remaining life of these oils can also be obtained in other ways:
one can be to perform a specific experiment and detect the relevant parameters so as to obtain the corresponding remaining life of the engine oil;
the other method can also be based on the traditional technical means to master the residual service life of the engine oil;
therefore, the working personnel can select the engine oil residual life calculation formula or a specific experiment or other traditional means according to the self requirements, so as to grasp the specific condition of the engine oil residual life, and verify the engine oil residual life, so as to obtain the corresponding loss factor.
It should be noted that, the step numbers of the steps in the embodiments of the present application do not limit the sequence of the operations in the technical solutions of the present application.
In a second aspect, based on the same inventive concept as the method embodiment, an embodiment of the present application provides an apparatus for calculating a performance loss of a machine oil, the apparatus including:
the data acquisition module is used for acquiring running parameter information under different preset working conditions in the running process that a preset number of vehicles to be tested run from a test starting point to a preset number of test points, and different running mileage is corresponded between each test point and the test starting point;
the loss factor calculation module is used for calculating and obtaining standard loss factors of different preset working conditions for the engine oil performance loss based on the driving mileage corresponding to different preset working conditions and the driving parameter information corresponding to different preset working conditions;
the engine oil life calculation module is used for calculating the service proportion of the engine oil life based on the corresponding driving mileage and the standard loss factor of the target vehicle under different preset working conditions in the driving process; wherein, the first and the second end of the pipe are connected with each other,
the preset number of the vehicles to be tested or the test points is at least not less than the number of the preset working conditions.
This application is based on the condition of traveling to the vehicle that awaits measuring carries out the analysis, obtains the different standard loss factor that predetermines the operating mode and correspond to convenient and fast carries out comparatively accurate prediction to the machine oil life-span of target vehicle, so that the navigating mate in time masters the machine oil performance loss condition.
It should be noted that, in order to describe the technical principle of the above-mentioned scheme, the following is specific:
assuming that the number of preset working conditions to be tested is K, at least one K-element linear equation set needs to be constructed in order to obtain loss factors of the K preset working conditions;
then in the extreme case, there are two cases:
the method comprises the following steps that in the first situation, K vehicles to be tested are driven to 1 test point from the test point, so that driving data for K different driving miles are obtained, and driving parameter information corresponding to the K test points under different preset working conditions is obtained, namely, one K vehicle to be tested is constructed, and a K-element linear equation set of the 1 test point is obtained, so that loss factors corresponding to the K preset working conditions are obtained, and since the number of the vehicles to be tested is K, standard loss factors of the different preset working conditions for the oil performance loss can be obtained and arranged on the basis of the loss factors corresponding to the vehicles to be tested under the preset working conditions, and the specific obtaining mode can be that a corresponding average value or an expected value is obtained through calculation;
and in the second condition, the number of the vehicles to be tested is 1, driving is carried out from the test points to the K test points, so that driving data for K different driving miles is obtained, driving parameter information under different preset working conditions corresponding to the K test points is obtained, namely, one 1 vehicle to be tested is constructed, and K-element linear equations of the K test points are obtained, so that loss factors corresponding to the K preset working conditions are obtained, and the loss factors corresponding to the vehicle to be tested under each preset working condition are used as standard loss factors of the different preset working conditions for the performance loss of the engine oil because the number of the vehicles to be tested is 1.
It should be noted that the first case and the second case belong to two extreme cases, that is, when the number of vehicles to be tested is 1, the number of test points needs to be at least K;
on the contrary, when the number of the test points is 1, the number of the vehicles to be tested needs at least K;
of course, in order to improve the data accuracy, the more the number of the vehicles to be tested and the number of the test points are, the higher the accuracy of the final calculation is, and only the case one and the case two are two extreme cases with the least data.
Specifically, for the first condition, the loss factor calculation module is further configured to calculate standard engine oil remaining lives of the vehicles to be tested in a driving process corresponding to at least one test point respectively based on a preset engine oil remaining life calculation formula;
the loss factor calculation module is further configured to calculate and obtain individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions based on the remaining life of the standard engine oil and by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
the loss factor calculation module is further used for calculating and obtaining standard loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions based on individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions.
Further, the loss factor calculation module is further configured to calculate an average value of individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset operating conditions, and the average value is used as a standard loss factor of the vehicles to be tested for the engine oil performance loss under different preset operating conditions.
It should be noted that, the flow corresponding to the above-mentioned scheme is the case one, that is, there are K vehicles to be tested at least, that is, the number of the vehicles to be tested is the same as the number of the preset working conditions at least, at this time, the number of the test points is at least 1, and the reliability is higher when the number of the test points is larger.
Specifically, for the second condition, the loss factor calculation module is further configured to calculate the standard remaining oil life of at least one vehicle to be tested in the running process corresponding to the plurality of test points based on a preset remaining oil life calculation formula;
the loss factor calculation module is further configured to calculate and obtain individual loss factors of the corresponding vehicle to be tested for engine oil performance loss under different preset working conditions based on the remaining service lives of the standard engine oil corresponding to the multiple test points and by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
the loss factor calculation module is further used for calculating and obtaining standard loss factors of the vehicle to be detected for the engine oil performance loss under different preset working conditions based on corresponding individual loss factors of the vehicle to be detected under different preset working conditions for the engine oil performance loss.
Further, the loss factor calculation module is further configured to calculate, when the number of the vehicles to be tested is greater than 1, an average value of individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset operating conditions, and use the average value as a standard loss factor of the vehicles to be tested for the engine oil performance loss under different preset operating conditions;
and the loss factor calculation module is also used for correspondingly taking the individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions as the standard loss factors for the engine oil performance loss under different preset working conditions when the number of the vehicles to be tested is equal to 1.
It should be noted that, the flow corresponding to the above-mentioned scheme is the case two, and the corresponding flow is the case two, that is, the number of the test points is at least K, that is, the number is at least the same as the number of the preset working conditions, at this time, the number of the vehicles to be tested is at least 1, and the greater the number of the vehicles to be tested, the higher the reliability is;
when the number of the vehicles to be tested is greater than 1, different standard loss factors of the preset working conditions for the engine oil performance loss can be obtained through arrangement based on the corresponding loss factors of the vehicles to be tested under the preset working conditions, and the specific obtaining mode can be that a corresponding average value or an expected value is obtained through calculation.
Specifically, the oil life calculation module is further configured to calculate and obtain an oil life remaining ratio based on the oil life usage ratio.
Further, the device also comprises an engine oil replacement prompting module;
the engine oil replacement prompt module is used for issuing engine oil replacement prompt information when the engine oil life residual proportion is lower than a preset engine oil life residual proportion threshold value.
Based on the above technical solution, the embodiment of the present application, when implemented specifically, includes the following processes:
the method comprises the following steps of firstly, determining k vehicle typical working conditions according to the market segment of the vehicle, the vehicle operation principle, the driving rule and the driving behavior data of the existing vehicle, wherein the k vehicle typical working conditions are as follows:
Tc(typical condition)＝[tr 1 ,tr 2 ,…,tr k ](ii) a Wherein the content of the first and second substances,
the determination of the k typical conditions may be divided according to the requirements of particular interest.
For example, the following division cases:
in the first case, k conditions are divided according to the universal characteristic curve.
In the second case, if the driving state is classified according to the driving state of the vehicle, the following is specifically performed:
tr _ full (empty) = [ idle speed, constant speed straight going, acceleration straight going, deceleration straight going, constant speed climbing, acceleration climbing, deceleration climbing, constant speed downhill, acceleration downhill, deceleration downhill.
The third case, as classified by vehicle action (transportation area), is specifically as follows:
tc (systemic condition) = [ regional bulk and general cargo distribution, port transportation, fast logistics transportation, green transportation, cold chain transportation, sand and stone transportation, hazardous chemical transportation, yunguchuan regional special delivery' \ 8230; ].
The fourth case, as classified by vehicle function (vehicle type), is as follows:
tr = [ tractor, heavy truck, heavy engineering vehicle, medium engineering vehicle, heavy special vehicle ].
In a fifth case, for example, the function (tractor) of a certain vehicle is divided as follows:
tr = [ punctual express delivery, long-distance cargo allocation, common special line, regional distribution, coal special line, high-efficiency transportation of hazardous chemical substances, regional distribution of hazardous chemical substances, express delivery transportation, and port container transportation ].
And secondly, selecting k vehicles as vehicles to be tested, which can also be called tracking vehicles or test vehicles, according to the market segment of the vehicles, such as a vehicle type, a certain type of functional vehicle, a certain enterprise, a certain industry and the like, and using the k vehicles as data support objects for calculating and obtaining the loss factor, wherein the vehicle number is = [1,2.. K ].
Thirdly, the loss factor of the engine oil under each working condition is expressed as
Initializing a, specifically as shown in the following table one: />
Watch 1
Fourthly, calculating an updated loss factor in real time:
step A, acquiring mileage of k vehicles selected in the step and parameters (such as torque, rotating speed and speed) required by the expression working condition in real time
And step B, calculating the mileage of various typical vehicle conditions, such as calculating the mileage of the vehicle in various typical operating conditions according to the rotating speed and the torque of the vehicle, and representing the following steps:
And C, calculating loss factors of each vehicle to be tested under various typical working conditions according to the following formula, wherein the specific conditions are as follows:
k vehicles to be tested are at No. 1 sampling points, and k typical working conditions are assumed:
wherein the content of the first and second substances,
representing loss factors of the vehicle to be tested under various typical working conditions at the No. 1 sampling point;
f 1 residual life of engine oil The residual service life of the engine oil of the No. 1 sampling point of the No. 1 vehicle to be tested is determined;
f k remaining life of engine oil The residual service life of the engine oil of the kth vehicle to be tested at the No. 1 sampling point is shown.
Combining a plurality of sampling points, such as k sampling points, with the above formula (1), the loss factor of each vehicle to be tested under various typical conditions can be calculated, that is, the loss factor corresponding to each vehicle to be tested is obtained
And further, calculating distribution conditions or calculating an average value or calculating tolerance by combining the loss factors of each vehicle to be measured under various typical working conditions, so as to obtain the standard loss factors under various typical working conditions.
It should be noted that, after the vehicle collects k points on the time axis, the calculation can be collected from the loop according to the requirement, where the loop means that the next k points are used to calculate by the single vehicle
A can be calculated again from 0 to k points, or a new sampling point can be added into the original k sampling points, then one sampling point in the original k sampling points is removed, and then the new k sampling points are used as the bicycle to calculate->
And fifthly, calculating the service life proportion of the engine oil based on the corresponding driving mileage of the target vehicle under different preset working conditions and the standard loss factor in the driving process.
And sixthly, setting an engine oil life residual proportion threshold, and issuing engine oil replacement prompt information if the engine oil life residual proportion of the target vehicle is lower than a preset engine oil life residual proportion threshold.
In the formula (1), f 1 Remaining life of engine oil 、...f k Residual life of engine oil The engine oil residual life calculation method is obtained by calculation based on a preset engine oil residual life calculation formula, wherein the engine oil residual life calculation formula is as follows:
the engine oil residual life calculation formula is as follows:
f residual life of engine oil For the remaining life of the engine oil, f 0 For the engine oil change mileage, λ is the real-time viscosity ratio, λ Upper limit of As the upper limit value of the viscosity ratio of the engine oil, lambda Lower limit of Is the lower limit value of the viscosity ratio of the engine oil, a is the ratio of the operating mileage of the engine oil to the replacement mileage of the engine oil, F 1 For said number of engine oil pressure history overruns, F 2 For the number of historical engine oil temperature overruns, F 3 For the number of historical overruns of the water content of the engine oil, F Limit value The historical number of times of exceeding the limit of the oil pressure, the historical number of times of exceeding the limit of the oil temperature and the historical number of times of exceeding the limit of the water content of the oil are the sum.
When the engine oil residual life calculation formula is utilized, the following operation flows can be matched:
obtaining the historical number of times of overrun of the pressure of the engine oil, the historical number of times of overrun of the temperature of the engine oil and the historical number of times of overrun of the water content of the engine oil;
monitoring the real-time viscosity of the engine oil, and calculating to obtain a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;
and calculating to obtain the residual service life of the engine oil according to the historical number of times of exceeding the pressure of the engine oil, the historical number of times of exceeding the temperature of the engine oil, the historical number of times of exceeding the water content of the engine oil, the real-time viscosity ratio, the upper limit value of the viscosity ratio of the engine oil, the lower limit value of the viscosity ratio of the engine oil, the replacement mileage of the engine oil and the running mileage of the engine oil by matching with a calculation formula of the residual service life of the engine oil.
Of course, it should be noted that f in the formula (1) 1 Residual life of engine oil 、...f k Residual life of engine oil The remaining life of these oils can also be obtained in other ways:
one can be to perform a specific experiment and detect the relevant parameters so as to obtain the corresponding remaining life of the engine oil;
the other method can also be based on the traditional technical means to master the residual service life of the engine oil;
therefore, the working personnel can select the engine oil residual life calculation formula or a specific experiment or other traditional means according to the self requirements, so as to grasp the specific condition of the engine oil residual life, and verify the engine oil residual life, so as to obtain the corresponding loss factor.
The engine oil performance loss calculation device provided in the embodiment of the present application corresponds to the technical problems, technical means, and technical effects, and is similar to the principle of the engine oil performance loss calculation method in the principle aspect.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for calculating the performance loss of an engine oil is characterized by comprising the following steps:
collecting running parameter information of a preset number of vehicles to be tested under different preset working conditions in the running process that the vehicles to be tested run from a test starting point to a preset number of test points, wherein different running mileage corresponds to each test point and each test starting point;
calculating standard loss factors of different preset working conditions for the performance loss of the engine oil based on the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
calculating the service life usage proportion of the engine oil based on the corresponding driving mileage and the standard loss factor of the target vehicle under different preset working conditions in the driving process; wherein the content of the first and second substances,
the preset number of the vehicles to be tested or the test points is at least not less than the number of the preset working conditions.
2. The method for calculating the oil performance loss according to claim 1, wherein the step of calculating the standard loss factor of the oil performance loss under different preset operating conditions based on the driving mileage corresponding to different preset operating conditions and the driving parameter information corresponding to different preset operating conditions comprises the following steps:
respectively calculating the standard engine oil residual life of a plurality of vehicles to be tested in the running process corresponding to at least one test point based on a preset engine oil residual life calculation formula;
based on the residual service life of the standard engine oil, calculating and obtaining individual loss factors of the vehicles to be tested for engine oil performance loss under different preset working conditions by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
and calculating to obtain standard loss factors aiming at the engine oil performance loss under different preset working conditions based on the individual loss factors aiming at the engine oil performance loss under different preset working conditions of each vehicle to be tested.
3. The oil performance loss calculation method of claim 2, wherein the step of calculating and obtaining the standard loss factors for the oil performance loss under different preset operating conditions based on the individual loss factors for the oil performance loss under different preset operating conditions of each vehicle to be tested comprises the following steps:
and calculating the average value of the individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions, and taking the average value as the standard loss factor for the engine oil performance loss under different preset working conditions.
4. The method for calculating the oil performance loss according to claim 1, wherein the step of calculating the standard loss factor of the different preset operating conditions for the oil performance loss based on the driving mileage corresponding to the different preset operating conditions and the driving parameter information corresponding to the different preset operating conditions comprises the following steps:
respectively calculating the standard engine oil residual life of at least one vehicle to be tested in the running process corresponding to a plurality of test points based on a preset engine oil residual life calculation formula;
based on the standard engine oil residual life corresponding to a plurality of test points, calculating and obtaining individual loss factors of the corresponding vehicle to be tested for engine oil performance loss under different preset working conditions by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
and calculating to obtain standard loss factors aiming at the engine oil performance loss under different preset working conditions based on the corresponding individual loss factors aiming at the engine oil performance loss under different preset working conditions of the vehicle to be tested.
5. The oil performance loss calculation method of claim 4, wherein the step of calculating the standard loss factors for the oil performance loss under different preset operating conditions based on the individual loss factors for the oil performance loss under different preset operating conditions of each vehicle to be tested comprises the following steps:
if the number of the vehicles to be tested is larger than 1, calculating the average value of individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions, and taking the average value as a standard loss factor for the engine oil performance loss under different preset working conditions;
and if the number of the vehicles to be tested is equal to 1, corresponding individual loss factors of the vehicles to be tested on different preset working conditions for the engine oil performance loss to be used as standard loss factors of the vehicles to be tested on different preset working conditions for the engine oil performance loss.
6. The oil performance loss calculation method of claim 1, wherein after calculating the oil life usage ratio based on the mileage and the standard loss factor corresponding to the target vehicle under different preset conditions during driving, the method further comprises the steps of:
and calculating to obtain the remaining proportion of the service life of the engine oil based on the service life proportion of the engine oil.
7. The oil performance loss calculation method of claim 6, wherein after calculating the oil life remaining ratio based on the oil life usage ratio, the method further comprises the steps of:
and if the residual proportion of the service life of the engine oil is lower than a preset residual proportion threshold value of the service life of the engine oil, issuing engine oil replacement prompt information.
8. An oil performance loss calculation apparatus, comprising:
the data acquisition module is used for acquiring running parameter information under different preset working conditions in the running process that a preset number of vehicles to be tested run from a test starting point to a preset number of test points, and different running mileage is corresponded between each test point and the test starting point;
the loss factor calculation module is used for calculating and obtaining standard loss factors of different preset working conditions for the performance loss of the engine oil based on the driving mileage corresponding to different preset working conditions and the driving parameter information corresponding to different preset working conditions;
the engine oil life calculation module is used for calculating the service life proportion of the engine oil based on the corresponding driving mileage and the standard loss factor of the target vehicle under different preset working conditions in the driving process; wherein the content of the first and second substances,
the preset number of the vehicles to be tested or the test points is at least not less than the number of the preset working conditions.
9. The oil performance loss calculation device of claim 6, wherein:
the loss factor calculation module is further used for calculating the standard engine oil residual life of a plurality of vehicles to be tested in the running process corresponding to at least one test point respectively based on a preset engine oil residual life calculation formula;
the loss factor calculation module is further configured to calculate and obtain individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions based on the remaining life of the standard engine oil and by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
the loss factor calculation module is further used for calculating and obtaining standard loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions based on individual loss factors of the vehicles to be tested for the engine oil performance loss under different preset working conditions.
10. The oil performance loss calculation device of claim 6, wherein:
the loss factor calculation module is further used for calculating the standard engine oil residual life of at least one vehicle to be tested in the running process corresponding to the plurality of test points respectively based on a preset engine oil residual life calculation formula;
the loss factor calculation module is further configured to calculate and obtain individual loss factors of the corresponding vehicle to be tested for engine oil performance loss under different preset working conditions based on the remaining lives of the standard engine oil corresponding to the plurality of test points and by combining the corresponding driving mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;
the loss factor calculation module is further used for calculating and obtaining standard loss factors of the vehicle to be detected for the engine oil performance loss under different preset working conditions based on corresponding individual loss factors of the vehicle to be detected under different preset working conditions for the engine oil performance loss.
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