A method and device for calculating engine oil performance loss

Abstract

The present application discloses a method and device for calculating oil performance loss, which relates to the field of automobile technology. The method includes the following steps: collecting driving parameter information of a preset number of vehicles to be tested under different preset working conditions during the driving process from a test starting point to a preset number of test points, and each test point corresponds to a different driving mileage between the test starting point; based on the driving mileage corresponding to different preset working conditions and the driving parameter information corresponding to different preset working conditions, calculating and obtaining the standard loss factor for oil performance loss under different preset working conditions; based on the driving mileage corresponding to different preset working conditions and the standard loss factor of the target vehicle during driving, calculating the oil life usage ratio. Based on the standard loss factor corresponding to different preset working conditions, the present application conveniently and quickly predicts the oil life of the target vehicle more accurately, so that the driver can grasp the oil performance loss in a timely manner.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a method and device for calculating engine oil performance loss. Background Art

[0002] At present, in order to ensure that the engine can work normally in daily life, the engine oil needs to be replaced regularly. During the engine oil replacement work, the oil life needs to be predicted. The oil life prediction generally adopts the following methods:

[0003] The first is to replace the engine oil based on a fixed mileage or running time. The second is to extract the vehicle's engine oil for physical and chemical testing and analysis to determine the oil's physical and chemical indicators and its degree of decay, and to confirm whether the oil needs to be replaced. The third is to determine the oil viscosity based on the ratio of the oil pressure change value to the engine speed, and then compare the oil viscosity with the threshold and generate a warning signal. The fourth is to calculate and predict the oil life of a single vehicle based on the oil loss mechanism and oil loss factors.

[0004] Based on the above-mentioned traditional engine oil life prediction technology, it can be found that there is currently a lack of a convenient and fast engine oil life prediction solution. Summary of the invention

[0005] The present application provides a method and device for calculating oil performance loss, which can conveniently and quickly predict the oil life of a target vehicle more accurately based on standard loss factors corresponding to different preset operating conditions, so that the driver can promptly understand the oil performance loss.

[0006] To achieve the above objectives, this application provides the following solutions.

[0007] In a first aspect, the present application provides a method for calculating engine oil performance loss, the method comprising the following steps:

[0008] Collecting driving parameter information of a preset number of vehicles to be tested under different preset working conditions during the driving process from a test starting point to a preset number of test points, each of the test points corresponding to a different driving mileage from the test starting point;

[0009] Based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions, a standard loss factor for oil performance loss under the different preset working conditions is calculated;

[0010] Based on the mileage and the standard loss factor corresponding to the target vehicle under different preset working conditions during driving, the oil life usage ratio is calculated; wherein,

[0011] 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.

[0012] Specifically, the step of calculating and obtaining the standard loss factors for the oil performance loss under different preset working conditions based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions includes the following steps:

[0013] Based on a preset calculation formula for the remaining life of the engine oil, respectively calculating the remaining life of the standard engine oil of the plurality of vehicles to be tested during the driving process corresponding to at least one test point;

[0014] Based on the remaining life of the standard engine oil, combined with the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions, the individual loss factor of the engine oil performance loss of each vehicle to be tested under different preset working conditions is calculated;

[0015] Based on the individual loss factors of the tested vehicles for the oil performance loss under the different preset working conditions, the standard loss factors for the oil performance loss under the different preset working conditions are calculated.

[0016] Specifically, the calculation of the standard loss factors for oil performance loss under different preset working conditions based on the individual loss factors for oil performance loss of each vehicle to be tested under different preset working conditions includes the following steps:

[0017] The average of the individual loss factors of the engine oil performance loss of each of the vehicles to be tested under the different preset working conditions is calculated as the standard loss factor for the engine oil performance loss under the different preset working conditions.

[0018] Specifically, the step of calculating and obtaining the standard loss factors for the oil performance loss under different preset working conditions based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions includes the following steps:

[0019] Based on a preset engine oil remaining life calculation formula, respectively calculating the standard engine oil remaining life of at least one of the tested vehicles during the driving process corresponding to the multiple test points;

[0020] Based on the remaining life of the standard engine oil corresponding to the plurality of test points, combined with the corresponding mileage under the different preset working conditions and the corresponding driving parameter information under the different preset working conditions, the individual loss factor of the corresponding vehicle to be tested for engine oil performance loss under the different preset working conditions is calculated;

[0021] Based on the individual loss factors of the corresponding vehicle to be tested for oil performance loss under different preset working conditions, the standard loss factors for oil performance loss under different preset working conditions are calculated.

[0022] Specifically, the calculation of the standard loss factors for oil performance loss under different preset working conditions based on the individual loss factors for oil performance loss of each vehicle to be tested under different preset working conditions includes the following steps:

[0023] If the number of the vehicles to be tested is greater than 1, calculating the average of the individual loss factors of the vehicles to be tested for oil performance loss under different preset working conditions as the standard loss factors for oil performance loss under different preset working conditions;

[0024] If the number of the vehicles to be tested is equal to 1, the individual loss factors of the vehicles to be tested for oil performance loss under different preset working conditions are used as the standard loss factors for oil performance loss under different preset working conditions.

[0025] Furthermore, after calculating the oil life usage ratio based on the mileage and the standard loss factor corresponding to the target vehicle under different preset working conditions during driving, the method further includes the following steps:

[0026] Based on the engine oil life usage ratio, the engine oil life remaining ratio is calculated.

[0027] Furthermore, after calculating and obtaining the remaining proportion of the engine oil life based on the engine oil life usage proportion, the method further comprises the following steps:

[0028] If the remaining oil life ratio is lower than a preset remaining oil life ratio threshold, an oil change reminder message is issued.

[0029] In a second aspect, the present application provides an oil performance loss calculation device, the device comprising:

[0030] A data acquisition module, which is used to collect driving parameter information of a preset number of vehicles to be tested under different preset working conditions during the driving process from a test starting point to a preset number of test points, each of the test points corresponding to a different driving mileage from the test starting point;

[0031] a loss factor calculation module, which is used to calculate and obtain standard loss factors for oil performance loss under different preset working conditions based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions;

[0032] The oil life calculation module is used to calculate the oil life usage ratio based on the mileage and the standard loss factor corresponding to the target vehicle under different preset working conditions during driving; wherein,

[0033] 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.

[0034] Specifically, the loss factor calculation module is further used to calculate the standard remaining life of the engine oil of the plurality of vehicles to be tested during the driving process corresponding to at least one test point based on a preset remaining life calculation formula of the engine oil;

[0035] The loss factor calculation module is further used to calculate and obtain the individual loss factor of each vehicle to be tested for oil performance loss under different preset working conditions based on the remaining life of the standard oil, in combination with the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;

[0036] The loss factor calculation module is also used to calculate and obtain the standard loss factor for the oil performance loss under different preset working conditions based on the individual loss factor for the oil performance loss of each vehicle to be tested under different preset working conditions.

[0037] Furthermore, the loss factor calculation module is also used to calculate the average of the individual loss factors of the oil performance loss of each of the vehicles to be tested under different preset working conditions as the standard loss factor for the oil performance loss under different preset working conditions.

[0038] Specifically, the loss factor calculation module is further used to calculate the standard remaining life of the engine oil of at least one of the vehicles to be tested during the driving process corresponding to the multiple test points based on a preset remaining life calculation formula of the engine oil;

[0039] The loss factor calculation module is further used to calculate and obtain the individual loss factor of the vehicle to be tested for oil performance loss under different preset working conditions based on the remaining life of the standard oil corresponding to the multiple test points, combined with the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;

[0040] The loss factor calculation module is also used to calculate and obtain the standard loss factor for oil performance loss under different preset working conditions based on the individual loss factor for oil performance loss of the corresponding vehicle to be tested under different preset working conditions.

[0041] Furthermore, the loss factor calculation module is further used to calculate the average of the individual loss factors of the oil performance loss of each of the vehicles to be tested under different preset working conditions as the standard loss factor for the oil performance loss under different preset working conditions when the number of the vehicles to be tested is greater than 1;

[0042] The loss factor calculation module is also used to correspond the individual loss factor of the vehicle to be tested for oil performance loss under different preset working conditions as the standard loss factor for oil performance loss under different preset working conditions when the number of the vehicle to be tested is equal to 1.

[0043] Specifically, the engine oil life calculation module is further used to calculate the remaining ratio of the engine oil life based on the engine oil life usage ratio.

[0044] Furthermore, the device also includes an oil change reminder module;

[0045] The engine oil change reminder module is used to issue an engine oil change reminder message when the engine oil life remaining ratio is lower than a preset engine oil life remaining ratio threshold.

[0046] The beneficial effects of the technical solution provided by this application include:

[0047] This application is based on the standard loss factors corresponding to different preset operating conditions, and conveniently and quickly makes a relatively accurate prediction of the oil life of the target vehicle, so that the driver can timely understand the oil performance loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0049] Figure 1 A flowchart of the method for calculating the oil performance loss provided in an embodiment of the present application;

[0050] Figure 2 This is a structural block diagram of the oil performance loss calculation device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0052] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0053] The embodiments of the present application provide a method and device for calculating oil performance loss, which can conveniently and quickly make a relatively accurate prediction of the oil life of a target vehicle based on standard loss factors corresponding to different preset operating conditions, so that the driver can promptly understand the oil performance loss.

[0054] In order to achieve the above technical effects, the overall idea of ​​this application is as follows:

[0055] A method for calculating engine oil performance loss, the method comprising the following steps:

[0056] S1, collecting driving parameter information of a preset number of vehicles to be tested under different preset working conditions during the process of driving from a test starting point to a preset number of test points, where each test point corresponds to a different driving mileage from the test starting point;

[0057] S2. Based on the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions, a standard loss factor for oil performance loss under different preset working conditions is calculated;

[0058] S3. Calculate the oil life usage ratio based on the corresponding mileage and standard loss factor of the target vehicle under different preset working conditions during driving; wherein,

[0059] The preset number of vehicles to be tested or test points is at least not less than the number of preset working conditions.

[0060] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0061] In a first aspect, an embodiment of the present application provides a method for calculating oil performance loss, the method comprising the following steps:

[0062] S1, collecting driving parameter information of a preset number of vehicles to be tested under different preset working conditions during the process of driving from a test starting point to a preset number of test points, where each test point corresponds to a different driving mileage from the test starting point;

[0063] S2. Based on the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions, a standard loss factor for oil performance loss under different preset working conditions is calculated;

[0064] S3. Calculate the oil life usage ratio based on the corresponding mileage and standard loss factor of the target vehicle under different preset working conditions during driving; wherein,

[0065] The preset number of vehicles to be tested or test points is at least not less than the number of preset working conditions.

[0066] This application is based on analyzing the driving conditions of the vehicle to be tested to obtain the standard loss factors corresponding to different preset working conditions, so as to conveniently and quickly make a relatively accurate prediction of the oil life of the target vehicle, so that the driver can timely understand the oil performance loss.

[0067] It should be noted that step S1 and step S2 are explained to describe their principles, which are as follows:

[0068] Assuming that the number of preset working conditions to be tested is K, then in order to obtain the loss factors of K preset working conditions, at least one K-variable linear equation group needs to be constructed;

[0069] Then in extreme cases, there are two situations:

[0070] Case 1: K vehicles to be tested drive from a test point to a test point, thereby obtaining driving data for K different driving mileages, thereby obtaining driving parameter information under different preset working conditions corresponding to the K test points, that is, constructing a K-variable linear equation group of K vehicles to be tested and 1 test point, thereby obtaining loss factors corresponding to K preset working conditions. Since the number of vehicles to be tested is K, based on the loss factors corresponding to the vehicles to be tested under each preset working condition, the standard loss factors for oil performance loss under different preset working conditions can be obtained. The specific obtaining method can be to calculate the corresponding average value or expected value;

[0071] Case 2: In this case, one vehicle to be tested drives from a test point to K test points, thereby obtaining driving data for K different mileages, thereby obtaining driving parameter information under different preset working conditions corresponding to the K test points, that is, constructing a K-variable linear equation group of one vehicle to be tested and K test points, thereby obtaining loss factors corresponding to K preset working conditions. Since the number of vehicles to be tested is one, the loss factors corresponding to the vehicle to be tested under each preset working condition are regarded as standard loss factors for oil performance loss under different preset working conditions.

[0072] It should be noted that Case 1 and Case 2 are 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;

[0073] On the contrary, when the number of test points is 1, the number of vehicles to be tested needs to be at least K;

[0074] Of course, to improve data accuracy, the greater the number of vehicles to be tested and the number of test points, the higher the accuracy of the final calculation will be. However, Case 1 and Case 2 are two extreme cases with the least data.

[0075] Specifically, the step of calculating and obtaining the standard loss factors for the oil performance loss under different preset working conditions based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions includes the following steps:

[0076] A1. Based on a preset formula for calculating the remaining life of the engine oil, respectively calculating the remaining life of the standard engine oil of a plurality of the vehicles to be tested during the driving process corresponding to at least one test point;

[0077] A2. Based on the remaining life of the standard engine oil, combined with the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions, calculate and obtain the individual loss factor of the engine oil performance loss of each of the vehicles to be tested under different preset working conditions;

[0078] A3. Based on the individual loss factors of the engine oil performance loss of each of the vehicles to be tested under different preset working conditions, the standard loss factors of the engine oil performance loss under different preset working conditions are calculated.

[0079] Specifically, the calculation of the standard loss factors for oil performance loss under different preset working conditions based on the individual loss factors for oil performance loss of each vehicle to be tested under different preset working conditions includes the following steps:

[0080] The average of the individual loss factors of the engine oil performance loss of each of the vehicles to be tested under the different preset working conditions is calculated as the standard loss factor for the engine oil performance loss under the different preset working conditions.

[0081] It should be noted that the operations of steps A1 to A3 correspond to the process of case 1, that is, there are at least K vehicles to be tested, which is at least the same as the number of preset working conditions. At this time, the number of test points is at least 1, and the more test points there are, the higher the reliability.

[0082] Specifically, the step of calculating and obtaining the standard loss factors for the oil performance loss under different preset working conditions based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions includes the following steps:

[0083] B1. Based on a preset formula for calculating the remaining life of the engine oil, respectively calculating the remaining life of the standard engine oil of at least one of the vehicles to be tested during the driving process corresponding to the multiple test points;

[0084] B2. Based on the remaining life of the standard engine oil corresponding to the plurality of test points, combined with the corresponding mileage under the different preset working conditions and the corresponding driving parameter information under the different preset working conditions, calculate and obtain the corresponding individual loss factor of the vehicle to be tested for engine oil performance loss under the different preset working conditions;

[0085] B3. Based on the individual loss factors of the corresponding vehicle to be tested for oil performance loss under different preset working conditions, the standard loss factors for oil performance loss under different preset working conditions are calculated.

[0086] Specifically, the calculation of the standard loss factors for oil performance loss under different preset working conditions based on the individual loss factors for oil performance loss of each vehicle to be tested under different preset working conditions includes the following steps:

[0087] If the number of the vehicles to be tested is greater than 1, calculating the average of the individual loss factors of the vehicles to be tested for oil performance loss under different preset working conditions as the standard loss factors for oil performance loss under different preset working conditions;

[0088] If the number of the vehicles to be tested is equal to 1, the individual loss factors of the vehicles to be tested for oil performance loss under different preset working conditions are used as the standard loss factors for oil performance loss under different preset working conditions.

[0089] It should be noted that the operations of steps B1 to B3 correspond to the process of case 2, that is, the number of test points is at least K, that is, at least the same as the number of preset working conditions. At this time, the number of vehicles to be tested is at least 1, and the more the number of vehicles to be tested is, the higher the reliability is;

[0090] When the number of vehicles to be tested is greater than 1, the standard loss factors for oil performance loss under different preset operating conditions can be obtained based on the loss factors corresponding to the vehicles to be tested under each preset operating condition. The specific method of obtaining the standard loss factors can be to calculate the corresponding average value or expected value.

[0091] Furthermore, based on the corresponding mileage and standard loss factor of the target vehicle under different preset working conditions during driving, after calculating the oil life usage ratio, the method further includes the following steps:

[0092] S4. Based on the engine oil life usage ratio, calculate and obtain the engine oil life remaining ratio.

[0093] Furthermore, after calculating and obtaining the remaining proportion of the engine oil life based on the engine oil life usage proportion, the method further includes the following steps:

[0094] S5. If the remaining ratio of the engine oil life is lower than a preset remaining ratio threshold of the engine oil life, an engine oil change reminder message is issued.

[0095] Based on the above technical solution, the embodiment of the present application includes the following process when implemented:

[0096] The first step is to determine k typical vehicle operating conditions based on the vehicle market segment, vehicle operating principles, driving rules and existing vehicle driving behavior data, as follows:

[0097] Tc(typical condition)=[tr 1 ,tr 2 ,…,tr k ];in,

[0098] The determination of k typical working conditions can be divided according to the specific needs of concern.

[0099] For example, the following division:

[0100] In the first case, k working conditions are divided according to the universal characteristic curve.

[0101] The second situation, if divided according to the vehicle driving status, is as follows:

[0102] Tr_full(empty) = [idle, drive straight at a constant speed, accelerate and drive straight, decelerate and drive straight, climb a hill at a constant speed, accelerate and climb a hill, decelerate and climb a hill, descend a hill at a constant speed, accelerate and descend a hill, decelerate and descend a hill...].

[0103] The third situation, if divided by vehicle function (transportation field), is as follows:

[0104] Tc (typical condition) = [regional bulk cargo distribution, port transportation,

[0105] Logistics fast transportation, green channel transportation, cold chain transportation, sand and gravel transportation, hazardous chemicals transportation, Yunguichuan area special delivery...].

[0106] The fourth situation, if divided by vehicle function (vehicle type), is as follows:

[0107] Tr=[tractor, heavy-duty truck, heavy-duty engineering vehicle, medium-duty engineering vehicle, heavy-duty special-purpose vehicle...].

[0108] The fifth case, such as the function of a certain vehicle (tractor), is as follows:

[0109] Tr=[On-time express transport, long-distance distribution, ordinary dedicated line, regional bulk distribution, coal dedicated line, efficient transportation of hazardous chemicals, regional distribution of hazardous chemicals, express transportation, port container transportation...].

[0110] The second step is to select k vehicles as test vehicles based on the vehicle market segment, such as a vehicle type, a certain type of functional vehicle, a certain enterprise, or a certain industry, which can also be called tracking vehicles or test vehicles. They are used as data support objects for calculating the loss factor. Vehicle number = [1, 2...k].

[0111] In the third step, the loss factor of the engine oil under each working condition is expressed as Initialize a, as shown in Table 1 below:

[0112]

[0113] Table 1

[0114] The fourth step is to calculate and update the loss factor in real time:

[0115] Step A: Real-time collection of the mileage of the k vehicles selected in step A and the parameters required to express the working conditions (such as torque, speed, speed, etc.)

[0116] Step B, calculate the mileage of various typical vehicle conditions, such as calculating the mileage of the vehicle in various typical working conditions based on the vehicle's speed and torque as follows:

[0117] or

[0118] Step C: Calculate the loss factor of each vehicle under various typical working conditions according to the following formula. The specific situation is as follows:

[0119] There are k vehicles to be tested at sampling point 1, assuming there are k typical operating conditions:

[0120]

[0121] in, It indicates the loss factor of the vehicle under test under various typical working conditions at sampling point No. 1;

[0122] It represents the mileage of the first vehicle to be tested under various typical working conditions;

[0123] It represents the mileage of the kth vehicle under test under various typical working conditions;

[0124] f 1 机油剩余寿命 The remaining life of the engine oil of the first vehicle to be tested at sampling point No. 1;

[0125] f k 机油剩余寿命 is the remaining life of the engine oil of the kth vehicle to be tested at sampling point 1.

[0126] By combining multiple sampling points, such as k sampling points, and in combination with the above formula (1), the loss factor for each vehicle under various typical working conditions can be calculated, that is, the corresponding loss factor of each vehicle under test can be obtained.

[0127] Furthermore, the loss factor of each vehicle to be tested under various typical working conditions is combined to calculate the distribution, the mean, or the tolerance, so as to obtain the standard loss factor under various typical working conditions.

[0128] It should be noted that after the vehicle collects k points on the time axis, it can collect and calculate from the loop according to the needs. The loop here means that the next k points are used to calculate through a single vehicle. You can start from 0 again until you have k points and then calculate a, or you can add the new sampling point to the original k sampling points, then remove one of the original k sampling points, and then use the new k sampling points as the single-vehicle calculation.

[0129] The fifth step is to calculate the oil life usage ratio based on the mileage and the standard loss factor corresponding to the target vehicle under different preset working conditions during driving.

[0130] The sixth step is to set a threshold value of the remaining ratio of the oil life. If the remaining ratio of the oil life of the target vehicle is lower than the preset threshold value of the remaining ratio of the oil life, an oil change reminder message is issued.

[0131] It should be noted that f in formula (1) 1 机油剩余寿命 ,...f k 机油剩余寿命 , is calculated based on the preset formula for calculating the remaining life of the engine oil. The formula for calculating the remaining life of the engine oil is as follows:

[0132] The remaining life calculation formula of the engine oil is:

[0133] in,

[0134] f 机油剩余寿命 is the remaining life of the engine oil, f 0 is the oil replacement mileage, λ is the real-time viscosity ratio, λ 上限 is the upper limit of the oil viscosity ratio, λ 下限 is the lower limit of the oil viscosity ratio, a is the ratio of the oil running mileage to the oil replacement mileage, F 1 is the number of times the oil pressure has exceeded the limit in history, F 2 is the number of times the oil temperature has exceeded the limit in history, F 3 is the number of times the oil water content exceeds the limit in history, F 限值 It is the sum of the number of times the oil pressure exceeds the limit in history, the number of times the oil temperature exceeds the limit in history, and the number of times the oil water content exceeds the limit in history.

[0135] When using the remaining oil life calculation formula, you can use the following operating procedures:

[0136] Obtain the number of times the oil pressure exceeds the limit in history, the number of times the oil temperature exceeds the limit in history, and the number of times the oil water content exceeds the limit in history;

[0137] Monitoring the real-time viscosity of the engine oil, and calculating a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;

[0138] The remaining life of the engine oil is calculated based on the historical number of times the oil pressure exceeds the limit, the historical number of times the oil temperature exceeds the limit, the historical number of times the oil water content exceeds the limit, the real-time viscosity ratio, the upper limit of the oil viscosity ratio, the lower limit of the oil viscosity ratio, the oil change mileage and the oil running mileage, in combination with the oil remaining life calculation formula.

[0139] Of course, it should be noted that f in formula (1) 1 机油剩余寿命 ,...f k 机油剩余寿命 The remaining life of these oils can also be obtained in other ways:

[0140] One method may be to conduct specific experiments to detect relevant parameters and thereby obtain the corresponding remaining life of the engine oil;

[0141] Another method is to master the remaining life of the engine oil based on traditional technical means;

[0142] Therefore, the staff can choose the above-mentioned remaining oil life calculation formula or specific experiments or other traditional means according to their own needs, so as to grasp the specific situation of the remaining oil life, so as to be able to verify it in order to obtain the corresponding loss factor.

[0143] 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 solution of the present application.

[0144] In a second aspect, based on the same inventive concept as the method embodiment, the embodiment of the present application provides an oil performance loss calculation device, the device comprising:

[0145] A data acquisition module, which is used to collect driving parameter information of a preset number of vehicles to be tested under different preset working conditions during the driving process from a test starting point to a preset number of test points, each of the test points corresponding to a different driving mileage from the test starting point;

[0146] a loss factor calculation module, which is used to calculate and obtain standard loss factors for oil performance loss under different preset working conditions based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions;

[0147] The oil life calculation module is used to calculate the oil life usage ratio based on the mileage and the standard loss factor corresponding to the target vehicle under different preset working conditions during driving; wherein,

[0148] 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.

[0149] This application is based on analyzing the driving conditions of the vehicle to be tested to obtain the standard loss factors corresponding to different preset working conditions, so as to conveniently and quickly make a relatively accurate prediction of the oil life of the target vehicle, so that the driver can timely understand the oil performance loss.

[0150] It should be noted that the technical principle of the above solution is described as follows:

[0151] Assuming that the number of preset working conditions to be tested is K, then in order to obtain the loss factors of K preset working conditions, at least one K-variable linear equation group needs to be constructed;

[0152] Then in extreme cases, there are two situations:

[0153] Case 1: K vehicles to be tested drive from a test point to a test point, thereby obtaining driving data for K different driving mileages, thereby obtaining driving parameter information under different preset working conditions corresponding to the K test points, that is, constructing a K-variable linear equation group of K vehicles to be tested and 1 test point, thereby obtaining loss factors corresponding to K preset working conditions. Since the number of vehicles to be tested is K, based on the loss factors corresponding to the vehicles to be tested under each preset working condition, the standard loss factors for oil performance loss under different preset working conditions can be obtained. The specific obtaining method can be to calculate the corresponding average value or expected value;

[0154] Case 2: In this case, one vehicle to be tested drives from a test point to K test points, thereby obtaining driving data for K different mileages, thereby obtaining driving parameter information under different preset working conditions corresponding to the K test points, that is, constructing a K-variable linear equation group of one vehicle to be tested and K test points, thereby obtaining loss factors corresponding to K preset working conditions. Since the number of vehicles to be tested is one, the loss factors corresponding to the vehicle to be tested under each preset working condition are regarded as standard loss factors for oil performance loss under different preset working conditions.

[0155] It should be noted that Case 1 and Case 2 are 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;

[0156] On the contrary, when the number of test points is 1, the number of vehicles to be tested needs to be at least K;

[0157] Of course, to improve data accuracy, the greater the number of vehicles to be tested and the number of test points, the higher the accuracy of the final calculation will be. However, Case 1 and Case 2 are two extreme cases with the least data.

[0158] Specifically, for the first situation, the loss factor calculation module is further used to calculate the standard remaining life of the engine oil of the plurality of vehicles to be tested during the driving process corresponding to at least one test point based on a preset remaining life calculation formula of the engine oil;

[0159] The loss factor calculation module is further used to calculate and obtain the individual loss factor of each vehicle to be tested for oil performance loss under different preset working conditions based on the remaining life of the standard oil, in combination with the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;

[0160] The loss factor calculation module is also used to calculate and obtain the standard loss factor for the oil performance loss under different preset working conditions based on the individual loss factor for the oil performance loss of each vehicle to be tested under different preset working conditions.

[0161] Furthermore, the loss factor calculation module is also used to calculate the average of the individual loss factors of the oil performance loss of each of the vehicles to be tested under different preset working conditions as the standard loss factor for the oil performance loss under different preset working conditions.

[0162] It should be noted that the process corresponding to the above scheme is case 1, that is, there are at least K vehicles to be tested, which is at least the same as the number of preset working conditions. At this time, the number of test points is at least 1, and the more test points there are, the higher the reliability.

[0163] Specifically, for the second situation, the loss factor calculation module is further used to calculate the standard remaining life of the engine oil of at least one of the vehicles to be tested during the driving process corresponding to the multiple test points based on a preset remaining life calculation formula of the engine oil;

[0164] The loss factor calculation module is further used to calculate and obtain the individual loss factor of the vehicle to be tested for oil performance loss under different preset working conditions based on the remaining life of the standard oil corresponding to the multiple test points, combined with the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions;

[0165] The loss factor calculation module is also used to calculate and obtain the standard loss factor for oil performance loss under different preset working conditions based on the individual loss factor for oil performance loss of the corresponding vehicle to be tested under different preset working conditions.

[0166] Furthermore, the loss factor calculation module is further used to calculate the average of the individual loss factors of the oil performance loss of each of the vehicles to be tested under different preset working conditions as the standard loss factor for the oil performance loss under different preset working conditions when the number of the vehicles to be tested is greater than 1;

[0167] The loss factor calculation module is also used to correspond the individual loss factor of the vehicle to be tested for oil performance loss under different preset working conditions as the standard loss factor for oil performance loss under different preset working conditions when the number of the vehicle to be tested is equal to 1.

[0168] It should be noted that the process corresponding to the above scheme is case 2, that is, the number of test points is at least K, that is, at least the same as the number of preset working conditions. At this time, the number of vehicles to be tested is at least 1, and the more the number of vehicles to be tested, the higher the reliability;

[0169] When the number of vehicles to be tested is greater than 1, the standard loss factors for oil performance loss under different preset operating conditions can be obtained based on the loss factors corresponding to the vehicles to be tested under each preset operating condition. The specific method of obtaining the standard loss factors can be to calculate the corresponding average value or expected value.

[0170] Specifically, the engine oil life calculation module is further used to calculate the remaining ratio of the engine oil life based on the engine oil life usage ratio.

[0171] Furthermore, the device also includes an oil change reminder module;

[0172] The engine oil change reminder module is used to issue an engine oil change reminder message when the engine oil life remaining ratio is lower than a preset engine oil life remaining ratio threshold.

[0173] Based on the above technical solution, the embodiment of the present application includes the following process when implemented:

[0174] The first step is to determine k typical vehicle operating conditions based on the vehicle market segment, vehicle operating principles, driving rules and existing vehicle driving behavior data, as follows:

[0175] Tc(typical condition)=[tr 1 ,tr 2 ,…,tr k ];in,

[0176] The determination of k typical working conditions can be divided according to the specific needs of concern.

[0177] For example, the following division:

[0178] In the first case, k working conditions are divided according to the universal characteristic curve.

[0179] The second situation, if divided according to the vehicle driving status, is as follows:

[0180] Tr_full(empty) = [idle, drive straight at a constant speed, accelerate and drive straight, decelerate and drive straight, climb a hill at a constant speed, accelerate and climb a hill, decelerate and climb a hill, descend a hill at a constant speed, accelerate and descend a hill, decelerate and descend a hill...].

[0181] The third situation, if divided by vehicle function (transportation field), is as follows:

[0182] Tc (typical condition) = [regional bulk cargo distribution, port transportation, fast logistics transportation, green channel transportation, cold chain transportation, sand and gravel transportation, hazardous chemicals transportation, Yunguichuan regional special delivery...].

[0183] The fourth situation, if divided by vehicle function (vehicle type), is as follows:

[0184] Tr=[tractor, heavy-duty truck, heavy-duty engineering vehicle, medium-duty engineering vehicle, heavy-duty special-purpose vehicle...].

[0185] The fifth case, such as the function of a certain vehicle (tractor), is as follows:

[0186] Tr=[On-time express transport, long-distance distribution, ordinary dedicated line, regional bulk distribution, coal dedicated line, efficient transportation of hazardous chemicals, regional distribution of hazardous chemicals, express transportation, port container transportation...].

[0187] The second step is to select k vehicles as test vehicles based on the vehicle market segment, such as a vehicle type, a certain type of functional vehicle, a certain enterprise, or a certain industry, which can also be called tracking vehicles or test vehicles. They are used as data support objects for calculating the loss factor. Vehicle number = [1, 2...k].

[0188] In the third step, the loss factor of the engine oil under each working condition is expressed as Initialize a, as shown in Table 1 below:

[0189]

[0190] Table 1

[0191] The fourth step is to calculate and update the loss factor in real time:

[0192] Step A: Real-time collection of the mileage of the k vehicles selected in step A and the parameters required to express the working conditions (such as torque, speed, speed, etc.)

[0193] Step B, calculate the mileage of various typical vehicle conditions, such as calculating the mileage of the vehicle in various typical working conditions based on the vehicle's speed and torque as follows:

[0194] or

[0195] Step C: Calculate the loss factor of each vehicle under various typical working conditions according to the following formula. The specific situation is as follows:

[0196] There are k vehicles to be tested at sampling point 1, assuming there are k typical operating conditions:

[0197]

[0198] in, It indicates the loss factor of the vehicle under test under various typical working conditions at sampling point No. 1;

[0199] It represents the mileage of the first vehicle to be tested under various typical working conditions;

[0200] It represents the mileage of the kth vehicle under test under various typical working conditions;

[0201] f 1 机油剩余寿命 The remaining life of the engine oil of the first vehicle to be tested at sampling point No. 1;

[0202] f k 机油剩余寿命 is the remaining life of the engine oil of the kth vehicle to be tested at sampling point 1.

[0203] By combining multiple sampling points, such as k sampling points, and in combination with the above formula (1), the loss factor for each vehicle under various typical working conditions can be calculated, that is, the corresponding loss factor of each vehicle under test can be obtained.

[0204] Furthermore, the loss factor of each vehicle to be tested under various typical working conditions is combined to calculate the distribution, the mean, or the tolerance, so as to obtain the standard loss factor under various typical working conditions.

[0205] It should be noted that after the vehicle collects k points on the time axis, it can collect and calculate from the loop according to the needs. The loop here means that the next k points are used to calculate through a single vehicle. You can start from 0 again until you have k points and then calculate a, or you can add the new sampling point to the original k sampling points, then remove one of the original k sampling points, and then use the new k sampling points as the single-vehicle calculation.

[0206] The fifth step is to calculate the oil life usage ratio based on the mileage and the standard loss factor corresponding to the target vehicle under different preset working conditions during driving.

[0207] The sixth step is to set a threshold value of the remaining ratio of the oil life. If the remaining ratio of the oil life of the target vehicle is lower than the preset threshold value of the remaining ratio of the oil life, an oil change reminder message is issued.

[0208] It should be noted that f in formula (1) 1 机油剩余寿命 ,...f k 机油剩余寿命 , is calculated based on the preset formula for calculating the remaining life of the engine oil. The formula for calculating the remaining life of the engine oil is as follows:

[0209] The remaining life calculation formula of the engine oil is:

[0210] in,

[0211] f 机油剩余寿命 is the remaining life of the engine oil, f 0 is the oil replacement mileage, λ is the real-time viscosity ratio, λ 上限 is the upper limit of the oil viscosity ratio, λ 下限 is the lower limit of the oil viscosity ratio, a is the ratio of the oil running mileage to the oil replacement mileage, F 1 is the number of times the oil pressure has exceeded the limit in history, F 2 is the number of times the oil temperature has exceeded the limit in history, F 3 is the number of times the oil water content exceeds the limit in history, F 限值 It is the sum of the number of times the oil pressure exceeds the limit in history, the number of times the oil temperature exceeds the limit in history, and the number of times the oil water content exceeds the limit in history.

[0212] When using the remaining oil life calculation formula, you can use the following operating procedures:

[0213] Obtain the number of times the oil pressure exceeds the limit in history, the number of times the oil temperature exceeds the limit in history, and the number of times the oil water content exceeds the limit in history;

[0214] Monitoring the real-time viscosity of the engine oil, and calculating a real-time viscosity ratio according to the real-time viscosity of the engine oil and the initial viscosity of the engine oil;

[0215] The remaining life of the engine oil is calculated based on the historical number of times the oil pressure exceeds the limit, the historical number of times the oil temperature exceeds the limit, the historical number of times the oil water content exceeds the limit, the real-time viscosity ratio, the upper limit of the oil viscosity ratio, the lower limit of the oil viscosity ratio, the oil change mileage and the oil running mileage, in combination with the oil remaining life calculation formula.

[0216] Of course, it should be noted that f in formula (1) 1 机油剩余寿命 ,...f k 机油剩余寿命 The remaining life of these oils can also be obtained in other ways:

[0217] One method may be to conduct specific experiments to detect relevant parameters and thereby obtain the corresponding remaining life of the engine oil;

[0218] Another method is to master the remaining life of the engine oil based on traditional technical means;

[0219] Therefore, the staff can choose the above-mentioned remaining oil life calculation formula or specific experiments or other traditional means according to their own needs, so as to grasp the specific situation of the remaining oil life, so as to be able to verify it in order to obtain the corresponding loss factor.

[0220] It should be noted that the oil performance loss calculation device provided in the embodiment of the present application, and its corresponding technical problems, technical means and technical effects are similar to the principles of the oil performance loss calculation method in terms of principle.

[0221] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0222] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A method for calculating oil performance loss, It is characterized in that The method comprises the following steps: Collecting driving parameter information of a preset number of vehicles to be tested under different preset working conditions during the driving process from a test starting point to a preset number of test points, each of the test points corresponding to a different driving mileage from the test starting point; Based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions, a standard loss factor for oil performance loss under the different preset working conditions is calculated; Calculate the oil life usage ratio based on the mileage and the standard loss factor corresponding to the target vehicle under different preset working conditions during driving; The step of calculating and obtaining the standard loss factors for oil performance loss under different preset working conditions based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions includes the following steps: Based on a preset calculation formula for the remaining life of the engine oil, respectively calculating the remaining life of the standard engine oil of the plurality of vehicles to be tested during the driving process corresponding to at least one test point; Based on the remaining life of the standard engine oil, combined with the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions, the individual loss factor of the engine oil performance loss of each vehicle to be tested under different preset working conditions is calculated; Based on the individual loss factors of the oil performance loss of each of the vehicles to be tested under different preset working conditions, the standard loss factors of the oil performance loss under different preset working conditions are calculated; wherein, 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, It is characterized in that The method of calculating and obtaining the standard loss factor for the oil performance loss under different preset working conditions based on the individual loss factor for the oil performance loss of each vehicle to be tested under different preset working conditions comprises the following steps: The average of the individual loss factors of the engine oil performance loss of each of the vehicles to be tested under the different preset working conditions is calculated as the standard loss factor for the engine oil performance loss under the different preset working conditions.

3. The method for calculating the oil performance loss according to claim 1, It is characterized in that The step of calculating and obtaining the standard loss factors for oil performance loss under different preset working conditions based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions includes the following steps: Based on a preset engine oil remaining life calculation formula, respectively calculating the standard engine oil remaining life of at least one of the tested vehicles during the driving process corresponding to the multiple test points; Based on the remaining life of the standard engine oil corresponding to the plurality of test points, combined with the corresponding mileage under the different preset working conditions and the corresponding driving parameter information under the different preset working conditions, the individual loss factor of the corresponding vehicle to be tested for engine oil performance loss under the different preset working conditions is calculated; Based on the individual loss factors of the corresponding vehicle to be tested for oil performance loss under different preset working conditions, the standard loss factors for oil performance loss under different preset working conditions are calculated.

4. The method for calculating the oil performance loss according to claim 3, It is characterized in that The method of calculating and obtaining the standard loss factor for the oil performance loss under different preset working conditions based on the individual loss factor for the oil performance loss of each vehicle to be tested under different preset working conditions comprises the following steps: The average of the individual loss factors of the engine oil performance loss of each of the vehicles to be tested under the different preset working conditions is calculated as the standard loss factor for the engine oil performance loss under the different preset working conditions.

5. The method for calculating the oil performance loss according to claim 1, It is characterized in that After calculating the oil life usage ratio based on the mileage and the standard loss factor corresponding to the target vehicle under different preset working conditions during driving, the method further includes the following steps: Based on the engine oil life usage ratio, the engine oil life remaining ratio is calculated.

6. The method for calculating the oil performance loss according to claim 5, It is characterized in that After calculating and obtaining the remaining ratio of the engine oil life based on the engine oil life usage ratio, the method further comprises the following steps: If the remaining oil life ratio is lower than a preset remaining oil life ratio threshold, an oil change reminder message is issued.

7. A device for calculating oil performance loss, It is characterized in that The device comprises: A data acquisition module, which is used to collect driving parameter information of a preset number of vehicles to be tested under different preset working conditions during the driving process from a test starting point to a preset number of test points, each of the test points corresponding to a different driving mileage from the test starting point; a loss factor calculation module, which is used to calculate and obtain standard loss factors for oil performance loss under different preset working conditions based on the mileage corresponding to the different preset working conditions and the driving parameter information corresponding to the different preset working conditions; An oil life calculation module, which is used to calculate the oil life usage ratio based on the mileage corresponding to the target vehicle under different preset working conditions during driving and the standard loss factor; The loss factor calculation module is also used to calculate the standard remaining life of the engine oil of the plurality of vehicles to be tested during the driving process corresponding to at least one test point based on a preset remaining life calculation formula of the engine oil; The loss factor calculation module is further used to calculate and obtain the individual loss factor of each vehicle to be tested for oil performance loss under different preset working conditions based on the remaining life of the standard oil, in combination with the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions; The loss factor calculation module is also used to calculate and obtain the standard loss factor for oil performance loss under different preset working conditions based on the individual loss factor for oil performance loss of each vehicle to be tested under different preset working conditions; wherein, 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.

8. The oil performance loss calculation device according to claim 7, Features: The loss factor calculation module is also used to calculate the standard remaining life of the engine oil of at least one of the vehicles to be tested during the driving process corresponding to the multiple test points based on a preset remaining life calculation formula of the engine oil; The loss factor calculation module is further used to calculate and obtain the individual loss factor of the vehicle to be tested for oil performance loss under different preset working conditions based on the remaining life of the standard oil corresponding to the multiple test points, combined with the corresponding mileage under different preset working conditions and the corresponding driving parameter information under different preset working conditions; The loss factor calculation module is also used to calculate and obtain the standard loss factor for oil performance loss under different preset working conditions based on the individual loss factor for oil performance loss of the corresponding vehicle to be tested under different preset working conditions.

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