High-Temperature Lubricants for Minimum-Cooled Diesel Engines
Interim rept. Oct 1980-Nov 1983
SOUTHWEST RESEARCH INST SAN ANTONIO TX BELVOIR FUELS AND LUBRICANTS RESEARCH FACILITY
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Lubricant performance at high temperatures was defined using an uncooled single-cylinder diesel engine operated at conditions which simulate a minimum-cooledadiabatic diesel engine. The following lubricant-related problems were observed Lubricant oxidation--oil too thick to pump corrosive products formed and bearings attacked Lubricant volatility--high oil consumption, oil thickening, and Engine deposits--ring sticking. A variety of high-temperature candidate lubricants was evaluated in the uncooled single-cylinder diesel engine. While these two oils had the best overall high-temperature performance of the candidates tested, they were still deficient in oxidation stabilityoil thickening properties. High-pressure differential scanning calorimetry HPDSC and FTM5308 were investigated for use as high-temperature lubricant bench screening methods. Neither method was completely satisfactory, and additional development of a bench oxidation screening technique is needed.
- Lubricants and Hydraulic Fluids
- Reciprocating and Rotating Engines