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Engine having a high pressure hydraulic system and low pressure lubricating system

United States Patent

May 30, 2000
View the Complete Patent at the US Patent & Trademark Office
An engine includes a high pressure hydraulic system having a high pressure pump and at least one hydraulically-actuated device attached to an engine housing. A low pressure engine lubricating system is attached to the engine housing and includes a circulation conduit fluidly connected to an outlet from the high pressure pump.
Bartley; Bradley E. (Manito, IL), Blass; James R. (Bloomington, IL), Gibson; Dennis H. (Chillicothe, IL)
Caterpillar Inc. (Peoria, IL)
09/ 189,108
November 10, 1998
The Government has the rights in this invention pursuant to Contract No. DE-FC05-97OR22605-S-90,700 awarded by the U.S. Department of Energy.