A high horsepower, low heat rejection diesel engine is being developed to meet future Army heavy combat vehicle requirements. This engine features high power output in a compact design that is oil-cooled allowing for a significant reduction in radiator size. This design requires a lubricant which can survive a sump temperature of 160°C, for 300 hours with transient sump temperature surges to over 177°C. A comprehensive high temperature lubricant development program has been initiated to address the need for this new design. A modified Cummins 10 liter diesel engine was used to simulate the operating condition of this low heat rejection engine. The premium commercial lubricant that was tested survived only 58 hours before completely losing oxidative stability. Several of the experimental lubricants completed the 200-hour peak torque endurance test. Phenomena observed at this intermediately high temperature range were somewhat different than what were expected from a high temperature engine.
High Temperature Liquid Lubricant Development Part I: Engine Tests
Sae Technical Papers
International Fuels & Lubricants Meeting & Exposition ; 1993
1993-10-01
Conference paper
English
High temperature liquid lubricant development part I: engine tests
Automotive engineering | 1993
|High Temperature Liquid Lubricant Development Part I: Engine Tests
British Library Conference Proceedings | 1993
|High temperature liquid lubricant development part II: bench test development
Automotive engineering | 1993
|High Temperature Liquid Lubricant Development Part II: Bench Test Development
British Library Conference Proceedings | 1993
|High Temperature Liquid Lubricant Development Part II: Bench Test Development
SAE Technical Papers | 1993
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