Unlock instant, AI-driven research and patent intelligence for your innovation.
A performance evaluation method of gasoline engine lubricating oil based on on-board diagnostic system
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An on-board diagnostic system, gasoline engine technology, applied in the direction of material inspection products, etc.
Active Publication Date: 2021-07-06
WUHAN RES INST OF MATERIALS PROTECTION
View PDF2 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Some foreign scholars try to use the on-board diagnostic system to monitor the change of the temperature rise rate of the engine coolant to determine the degree of lubricating oil decay. Unfortunately, in the actual driving process of the vehicle, this method needs to further consider the vehicle load, heat exchange with the external environment, and vehicle operating status. Although this method has not yet been fully used to determine the state of engine oil, it pioneered the use of on-board diagnostic systems to explore the oil change cycle of lubricating oil, which provides a basis for the research on the oil change cycle of vehicle lubricating oil. a new way of thinking
At present, there is no uniform method for determining the oil change interval in the world. It is of great significance to develop an accurate, reliable, and highly feasible evaluation method for engine lubricating oil performance to promote lubricating oil replacement according to quality.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0036] For a minerall oil-1 for urban working conditions, the vehicle diagnostic system is used to monitor the operation parameters and laboratory analysis of 6 different periods of vehicle diagnostic system. The corresponding lubricant performance parameters are shown in Table 1, and the vehicle operating parameters include lubricants. Service Time (ST), Vehicle Operation Mileage (MIL), Engine Running Time (ITE), and Vehicle Starting Time (NBS). The total acid value (TAN), start oxidation temperature (OOT), oxidation, sulfation value, a sulfation value (Nitration), a sulfation value (Oxidation), a sulfation value (sulfation), a sulfation, and a ZDTP additive relative consumption.
[0037] Table 1 Mineral oil-1 vehicle operating parameters and lubricant performance parameter modeling data sheet
[0038]
[0039] The obtained vehicle operating parameters and the lubricant performance parameter data columns divided by the data values corresponding to 47 days, eliminating the dif...
Embodiment 2
[0049] For another minerall oil-2 for urban working conditions, vehicle operation parameters and lubricant performance parameters are shown in Table 5, with lubricating oil service for 19 days, 48 days, 79 days, 108 days and 137 days Run data and lubricant performance parameters are modeling data, establish theoretical model such as image 3 Indicated. The theoretical model is y = 7.1277X + 1.6753, where X is a comprehensive change amount of the vehicle operating parameters, y is the amount of comprehensive change in the performance parameters of the lubricant, the model R 2 = 0.950, indicating high model accuracy. With a 156-day data verification model of lubricating oil service, it is 0.1843, and the total change of the vehicle operating parameters is 0.1843. The comprehensive change of the laboratory test lubricant performance parameters is 2.8907, theoretical calculation of the comprehensive change of lubricant performance parameters The amount is 2.9889, the theoretical calc...
Embodiment 3
[0053] For two commercially available full-synthetic lubricants, urban working conditions and cities, high-speed mixed conditions, respectively, vehicle operation parameters, and lubricant performance parameters are shown in Table 6. All synthetic oil-1 runs under the conditions of urban working conditions, with a 23 day, 54 days, 83 days and 114 days of vehicle operation data and lubricant performance parameters as modeling data, establish theoretical model such as Figure 4 Indicated. The theoretical model is Y = 12.6790x + 0.1610, where x is the comprehensive change amount of the vehicle operating parameters, y is the amount of comprehensive change in the performance parameters of the lubricant, the model R 2 = 0.996, indicating that the model is highly fitted. Taking lubricating oil service 143 days and 147 days data to verify data verification theoretical model accuracy, oil service 143 days and 147 days of vehicle operating parameters are 0.2096 and 0.2038, laboratory test lu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention discloses a gasoline engine lubricating oil performance evaluation method based on an on-board diagnostic system. Firstly, through the on-board diagnostic system, vehicle operating parameters corresponding to several different periods during vehicle operation are obtained, and engine lubricating oil samples are collected at corresponding times; and then The collected engine lubricating oil samples are tested for lubricating oil physical and chemical properties, oxidation stability, and lubricating oil composition changes to obtain lubricating oil performance parameters; then, data processing is performed on the obtained vehicle operating parameters and corresponding lubricating oil performance parameters to obtain vehicle operating parameters. The comprehensive change of parameters and the comprehensive change of lubricating oil performance parameters, and establish a theoretical model; finally, by monitoring the vehicle operating parameters and calculating the comprehensive change of operating parameters, bring it into the established theoretical model, and calculate the comprehensive change of lubricating oil performance parameters at this moment , to achieve lubricant performance evaluation. The invention can provide a reference for manufacturers to develop engine oil life evaluation systems and automobile users to evaluate oil change intervals.
Description
Technical field [0001] The present invention belongs to the field of engine lubricating oil monitoring involves a method of evaluating a gasoline engine lubricating oil performance, and is specifically involved in a gasoline engine lubricating oil performance assessment method based on a vehicle diagnostic system. Background technique [0002] The engine oil plays an integral part of the fuel vehicle engine is indispensable for the engine's engine, such as the engine oil, prevents wear, taking heat, cleaning engine. The engine oil works for a long time at high temperatures and aerobic conditions, which inevitably avoids oxidation degradation, and the performance is decreased, so it is necessary to replace before the lubricating oil is completely fault. Lubricating oil replaces the increase in vehicle maintenance costs, and improper waste oil treatment will produce great pollution. The lubricating oil replacement does not cause excessive wear of engine parts, causing huge losses, ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More