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The Effect of Oil and Coolant Temperatures on Diesel Engine Wear
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Abstract
A study has been made of piston ring wear and total engine wear using literature data and new experimental results. The main purpose of the study was to establish the effects of oil and coolant temperatures on engine wear. Wear trends that were found in the early 1960's may not be valid any longer because of the development of higher BMEP turbocharged diesel engines, better metallurgical wear surfaces and improved lube oil properties. New data are presented for the purpose of describing present wear trends.
A direct-injection, 4-cycle, turbocharged diesel engine was used for the wear tests. The radioactive tracer technique was used to measure the top piston ring chrome face wear. Atomic emission spectroscopy was employed to determine the concentration of wear metals in the oil to determine total engine wear based on iron and lead. The data were analyzed and compared to the results found in the literature from previous investigators. After the results of the analysis are presented, an explanation of the results using some fundamental concepts is made.
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Citation
Bolis, D., Johnson, J., and Daavetilla, D., "The Effect of Oil and Coolant Temperatures on Diesel Engine Wear," SAE Technical Paper 770086, 1977, https://doi.org/10.4271/770086.Also In
References
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