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Hybrid vehicle control

United States Patent

July 28, 2015
View the Complete Patent at the US Patent & Trademark Office
A method and apparatus for heating a catalytic converter's catalyst to an efficient operating temperature in a hybrid electric vehicle when the vehicle is in a charge limited mode such as e.g., the charge depleting mode or when the vehicle's high voltage battery is otherwise charge limited. The method and apparatus determine whether a high voltage battery of the vehicle is incapable of accepting a first amount of charge associated with a first procedure to warm-up the catalyst. If it is determined that the high voltage battery is incapable of accepting the first amount of charge, a second procedure with an acceptable amount of charge is performed to warm-up the catalyst.
Shallvari; Iva (Troy, MI), Velnati; Sashidhar (Oxford, MI), DeGroot; Kenneth P. (Macomb Township, MI)
FCA US LLC (Auburn Hills, MI)
13/ 523,964
June 15, 2012
GOVERNMENT INTEREST This invention was made, at least in part, under U.S. Government, Department of Energy, Contract No. DE-EE0002720. The Government may have rights in this invention.