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Hybrid powertrain system

United States Patent

6,945,893
September 20, 2005
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A hybrid powertrain system is provided that includes a first prime mover having a rotational output, a second prime mover having a rotational output, and a transmission having a main shaft supporting at least two main shaft gears thereon. The transmission includes a first independent countershaft drivingly connected to the first prime mover and including at least one ratio gear supported thereon that meshes with a respective main shaft gear. A second independent countershaft is drivingly connected to the second prime mover and includes at least one ratio gear supported thereon that meshes with a respective main shaft gear. The ratio gears on the first and second countershafts cooperate with the main shaft gears to provide at least one gear ratio between the first and second countershafts and the main shaft. A shift control mechanism selectively engages and disengages the first and second countershafts for rotation with the main shaft.
Grillo; Ricardo C. (Portage, MI), O'Neil; Walter K. (Southfield, MI), Preston; David M. (Clarkston, MI)
Eaton Corporation (Cleveland, OH)
10/ 156,513
May 28, 2002
This invention was made with Government support under NREL Subcontract No. ZCL-2-32060-01, Prime Contract DE-AC36-99 GO10337 awarded by the Department of Energy. The government has certain rights in this invention.