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Hybrid powertrain system including smooth shifting automated transmission

United States Patent

October 24, 2006
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A powertrain system is provided that includes a prime mover and a change-gear transmission having an input, at least two gear ratios, and an output. The powertrain system also includes a power shunt configured to route power applied to the transmission by one of the input and the output to the other one of the input and the output. A transmission system and a method for facilitating shifting of a transmission system are also provided.
Beaty; Kevin D. (Kalamazoo, MI), Nellums; Richard A. (Farmington Hills, MI)
Eaton Corporation (Cleveland, OH)
10/ 763,445
January 23, 2004
The present invention relates to a powertrain system and, more particularly, to a hybrid powertrain system including an automated transmission. This invention was made with Government support under NREL Subcontract No. ZCL-2-32060-01, Prime Contract DE-AC36-99GO10337 awarded by the Department of Energy. The government has certain rights in this invention.