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System and method of cylinder deactivation for optimal engine torque-speed map operation

United States Patent

November 11, 2014
View the Complete Patent at the US Patent & Trademark Office
This disclosure provides a system and method for determining cylinder deactivation in a vehicle engine to optimize fuel consumption while providing the desired or demanded power. In one aspect, data indicative of terrain variation is utilized in determining a vehicle target operating state. An optimal active cylinder distribution and corresponding fueling is determined from a recommendation from a supervisory agent monitoring the operating state of the vehicle of a subset of the total number of cylinders, and a determination as to which number of cylinders provides the optimal fuel consumption. Once the optimal cylinder number is determined, a transmission gear shift recommendation is provided in view of the determined active cylinder distribution and target operating state.
Sujan; Vivek A. (Columbus, IN), Frazier; Timothy R. (Columbus, IN), Follen; Kenneth (Greenwood, IN), Moon; Suk-Min (Greenwood, IN)
Cummins Iintellectual Property, Inc. (Minneapolis, MN), Paccar, Inc. (Bellevue, WA), Eaton Corporation (Cleveland, OH)
13/ 407,715
February 28, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under "Recovery Act--System Level Demonstration of Highly Efficient and Clean, Diesel Powered Class 8 Trucks (Supertruck)," Program Award Number DE-EE0003403 awarded by the Department of Energy (DOE). The government has certain rights in the invention.