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Method for valve seating control for an electro-hydraulic engine valve

United States Patent

January 11, 2011
View the Complete Patent at the US Patent & Trademark Office
Valve lift in an internal combustion engine is controlled by an electro-hydraulic actuation mechanism including a selectively actuable hydraulic feedback circuit.
Sun; Zongxuan (Plymouth, MN)
GM Global Technology Operations, Inc. (Detroit, MI)
11/ 851,446
September 7, 2007
GOVERNMENT LICENSE RIGHTS The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of contract number NDG 024100 awarded by the Department of Energy.