This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
79 Study on Bearing Lubricity of Two-cycle Engine Oil
Technical Paper
2002-32-1848
Annotation ability available
Sector:
Language:
English
Abstract
Polybutene is generally formulated in two-cycle engine oil in order to prevent smoke and carbon accumulation on exhaust system in motorcycles. The higher content of polybutene in oil is said to be essential to maintain the initial performance of two-cycle engines. However, it is not so known that this polybutene deteriorates the lubricity of bearing. Therefore, we developed a method for evaluating the lubricity of bearing to verify the influence caused by two-cycle engine oils. The test was conducted to measure the temperature of the big end of connecting rod directly while running the engine. The bearing lubricity was evaluated by comparing the temperature of the big end of connecting rod of candidate oils with that of standard oil. A better two-cycle engine oil formulation was able to be led by adding this bearing lubricity test to the JASO(or ISO) standard tests.
Recommended Content
Authors
Citation
KAWABE, H. and ISHIMARU, M., "79 Study on Bearing Lubricity of Two-cycle Engine Oil," SAE Technical Paper 2002-32-1848, 2002.Also In
References
- JSAE “JASO M345-93 Two-stroke gasoline engine oils” 1993
- Kawabe H. Konishi Y. “Effect of polybutene on prevention of clogging in the exhaust system of two-stroke engines” SETC Paper 931507 1993
- JSAE “JASO M343-92 Exhaust system blocking test procedure for evaluating two-stroke gasoline engine oils” 1992
- Kagaya M. Ishimaru M. “A New Challenge for High Performance Two-Cycle Engine Oils” SAE Paper 881619
- JSAE “JASO M340-92 Lubricity test procedure for evaluating two-stroke gasoline engine oils” 1992
- JSAE “JASO M342-92 Smoke test procedure for evaluating two-stroke gasoline engine oils” 1992