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Heat engine and electric motor torque distribution strategy for a hybrid electric vehicle

United States Patent

September 28, 1999
View the Complete Patent at the US Patent & Trademark Office
A method is provided for controlling a power train system for a hybrid electric vehicle. The method includes a torque distribution strategy for controlling the engine and the electric motor. The engine and motor commands are determined based upon the accelerator position, the battery state of charge and the amount of engine and motor torque available. The amount of torque requested for the engine is restricted by a limited rate of rise in order to reduce the emissions from the engine. The limited engine torque is supplemented by motor torque in order to meet a torque request determined based upon the accelerator position.
Boberg; Evan S. (Hazel Park, MI), Gebby; Brian P. (Hazel Park, MI)
Chrysler Corporation (Auburn Hills, MI)
08/ 982,047
December 1, 1997
STATEMENT OF GOVERNMENT INTEREST The government of the United States of America has rights in this invention pursuant to Subcontract No. ZAN-6-16334-01 awarded by the U.S. Department of Energy.