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Development of a Valve Train Wear Test Procedure for Gasoline Engine Oil
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English
Abstract
An analysis was made of wear factors by investigating the effect of engine operating conditions on valve train wear. It was found that cam nose wear increased as larger amounts of combustion products, including nitrogen oxides and unburned gasoline, became intermixed with the engine oil. Based on these results, a valve train wear test procedure has been developed for evaluating cam nose and rocker arm wear under engine firing conditions.
It has been confirmed that this test procedure correlates will with ASTM Sequence VE test and CCMC TU-3 test.
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Citation
Hanada, K., Murakami, Y., Shoji, Y., Aihara, H. et al., "Development of a Valve Train Wear Test Procedure for Gasoline Engine Oil," SAE Technical Paper 940794, 1994, https://doi.org/10.4271/940794.Also In
References
- Watanabe, S. 0kabe, H. Japanese Engine Tests for the Specification of Gasoline Engine Oils 8th International Colloquium, Preprint of Tribology 2000 3 1992 23 6 1
- McGeehan, J.A. Yamaguchi. E.S. Gasoline-Engine Camshaft Wear: The Culprit is Blow-By SAE Paper 892112
- Valve Train Wear Test Procedure for Automobile Gasoline Engine Oils
- Murakami, Y. Aihara, H. Effects of NOx and Unburned Gasoline on Low Temperature Sludge Formation in Engine oil SAE Paper 910747
- Murakami, Y. “A Study of Low Temperature Sludge Formation in Gasoline Engine Oil”