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Effect of Engine Oil Additives on Motorcycle Clutch System
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 19, 2003 by SAE International in United States
Annotation ability available
The energy conserving by engine oils has been required from the viewpoint of the environmental issue. The fuel efficiency of passenger car engine oils has been improved by adding friction modifiers. However, engine oils containing friction modifiers can not be applied to 4-stroke motorcycles. Because motorcycles normally have a wet clutch system inside the crankcase and such engine oils can decrease the clutch capacity.1) ∼ 2) Therefore, it is important for motorcycle engines to investigate additives, which can increase friction coefficient on paper-based friction materials.
In this study, friction coefficients of engine oils formulated with different additives such as dispersants and detergents were evaluated with a reciprocating friction tester. Several types of polybutenyl succinimides, sulfonates, phenates and salicylates were used as dispersants and detergents.
As a result, it was found that the polybutenyl succinimide borate shows a higher friction coefficient than the other succinimide. In addition, several detergents, which increase a friction coefficient, were found.
CitationKasai, M., Ishikawa, M., and Miyaji, T., "Effect of Engine Oil Additives on Motorcycle Clutch System," SAE Technical Paper 2003-01-1956, 2003, https://doi.org/10.4271/2003-01-1956.
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