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Development of an Engine Screening Test to Study the Effect of Methanol Fuel on Crankcase Oils
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Abstract
An engine screening test has been successfully developed to study the effect on bore and ring wear of crankcase oils in methanol-fueled spark ignition engines. The cyclical Sequence V-D test procedure was modified and used in the 2. 3L engine for this development. The main modifications were as follows: The engine was equipped with an oil filter dual carburetors and an oil flushing mechanism.
The metals content in the used oil samples were monitored as a bore and ring wear indicator and oil quality was differentiated effectively in 4 to 22 hours of testing. As a result two fully formulated oils have been defined. The performance of these oils exceeds the SF specification limits in methanol-fueled V-D testing and reduces bore and ring wear to almost the same levels as typically seen in gasoline-fueled engines. These products are now undergoing extensive field evaluation.
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Citation
Chaibongsai, S., Howlett, B., and Millard, D., "Development of an Engine Screening Test to Study the Effect of Methanol Fuel on Crankcase Oils," SAE Technical Paper 830240, 1983, https://doi.org/10.4271/830240.Also In
References
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