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Engine control system having fuel-based timing

United States Patent

April 3, 2012
View the Complete Patent at the US Patent & Trademark Office
A control system for an engine having a cylinder is disclosed having an engine valve movable to regulate a fluid flow of the cylinder and an actuator associated with the engine valve. The control system also has a sensor configured to generate a signal indicative of an amount of an air/fuel mixture remaining within the cylinder after completion of a first combustion event and a controller in communication with the actuator and the sensor. The controller may be configured to compare the amount with a desired amount, and to selectively regulate the actuator to adjust a timing of the engine valve associated with a subsequent combustion event based on the comparison.
Willi; Martin L. (Dunlap, IL), Fiveland; Scott B. (Metamora, IL), Montgomery; David T. (Edelstein, IL), Gong; Weidong (Dunlap, IL)
Caterpillar Inc. (Peoria, IL)
12/ 292,836
November 26, 2008
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under Contract No. DE-FC02-01CH11079, awarded by the Department of Energy. The Government may have certain rights in this invention.