Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kenneth James Miller0
Douglas Raymond Martin0
Scott James Thompson0
Ted Haladyna0
Date of Patent
March 24, 2015
Patent Application Number
13849417
Date Filed
March 22, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
Methods and systems are provided for extending an engine-off period of a hybrid vehicle while reducing engine cold-start emissions. During an engine pull-up to meet operator demand, the engine is held at a higher power for a longer duration to aggressively heat the exhaust catalyst. Subsequently, the engine is pulled up to a lower power and held at the lower power for shorter bursts of time to activate the exhaust catalyst.
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