Research on Parts Rating Items and Methods in Engine Test for Lubricants
After the engine test for lubricant evaluation,the practice of dismantling and rating core engine parts has been widely applied in lubricant performance evaluation methods.Due to the subjectivity of parts rating,it is necessary to stand-ardize the evaluation items and rating calculation methods through standard methods to achieve objectivity in subjective rat-ing,thus ensuring the consistency of parts rating.By combining parts rating with objective parts measurements and physi-cal and chemical tests of oil samples,it can more comprehensively reflect the engine's condition and the level of lubricating oil performance.The paper reviews the methods,classifications,and items of parts rating in lubricating oil engine tests at home and abroad,with a focus on piston deposit rating and sludge rating.It analyzes the quality indicators of parts rating e-valuation items in gasoline engine oil and diesel engine oil product specifications,providing reference for the engine test on the independent lubricating oil standard system in China.
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