期刊
MEASUREMENT & CONTROL
卷 51, 期 3-4, 页码 65-72出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0020294018770916
关键词
Degradation; engine oil; lubricant properties; oil condition monitoring; reliability; Total Acid Number (TAN)
资金
- Faculty of Commodity Science, Cracow University of Economics
This article describes the processes of degradation of five engine oils belonging to the same SAE (Society of Automotive Engineers) viscosity class but launched by different manufacturers. The direction and intensity of changes in the total acid number have been analyzed. As part of the experiment, the changes in engine oils occurring during operation have been examined. The operating conditions throughout the test can be described as severe, that is, frequent starting of the engine, short distance driving, and extended engine idling. All engine oils were operated in passenger cars of a uniform fleet of 25 vehicles. The total acid number was determined in accordance with the ASTM D664. The obtained results have led to the development of a statistical model enabling to calculate average predictive values of the total acid number for a given mileage. The results may facilitate decision-making regarding the service life of engine oils.
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