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Powertrain system for a hybrid electric vehicle

United States Patent

August 31, 1999
View the Complete Patent at the US Patent & Trademark Office
A hybrid electric powertrain system is provided including an electric motor/generator drivingly engaged with the drive shaft of a transmission. The electric is utilized for synchronizing the rotation of the drive shaft with the driven shaft during gear shift operations. In addition, a mild hybrid concept is provided which utilizes a smaller electric motor than typical hybrid powertrain systems. Because the electric motor is drivingly engaged with the drive shaft of the transmission, the electric motor/generator is driven at high speed even when the vehicle speed is low so that the electric motor/generator provides more efficient regeneration.
Reed, Jr.; Richard G. (Royal Oak, MI), Boberg; Evan S. (Hazel Park, MI), Lawrie; Robert E. (Whitmore Lake, MI), Castaing; Francois J. (Bloomfield Township, MI)
Chrysler Corporation (Auburn Hills, MI)
08/ 980,685
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.