Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Alfred E. Spitza, Jr.0
William S Beggs0
Kevin C. Wong0
Date of Patent
November 24, 2009
0Patent Application Number
120244720
Date Filed
February 1, 2008
0Patent Primary Examiner
Patent abstract
A method of transitioning an engine to a cylinder deactivation mode may include determining a ratio of time that the engine is operating in the cylinder deactivation mode for an engine operating condition relative to a total time of engine operation in the operating condition, determining a number of transitions from a full cylinder mode to the cylinder deactivation mode during the operating condition, determining a transition modifier based on the ratio and number, and modifying a transition criterion based on the transition modifier.
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