Development of high temperature liquid lubricants for low-heat rejection heavy duty diesel engines

Technical Report · Mon Mar 01 04:00:00 EST 1993

DOI:https://doi.org/10.2172/140583· OSTI ID:140583

Wiczynski, T A; Marolewski, T A

Objective was to develop a liquid lubricant that will allow advanced diesel engines to operate at top ring reversal temperatures approaching 500 C and lubricant sump temperatures approaching 250 C. Base stock screening showed that aromatic esters and diesters has the lowest deposit level, compared to polyol esters, poly-alpha-olefins, or refined mineral oil of comparable viscosity. Classical aryl and alkyl ZDP antiwear additives are ineffective in reducing wear with aromatic esters; the phosphate ester was a much better antiwear additive, and polyol esters are more amenable to ZDP treatment. Zeolites and clays were evaluated for filtration.

• Research Organization: Cummins Engine Co., Inc., Columbus, IN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States)
• DOE Contract Number: AI01-91CE50306
• OSTI ID: 140583
• Report Number(s): DOE/NASA--0373-2; NASA-CR--191197; ON: DE94007379
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
ADDITIVES
DIESEL ENGINES
LUBRICANTS
TEMPERATURE RANGE 0400-1000 K