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Power system

United States Patent

7,344,472
March 18, 2008
View the Complete Patent at the US Patent & Trademark Office
A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.
Hickam; Christopher Dale (Glasford, IL)
Caterpillar Inc. (Peoria, IL)
11/ 261,637
20070099750
October 31, 2005
GOVERNMENT RIGHTS This invention was made with Government support under the terms of Contract No. DE-FC26-04NT42258 awarded by the Department of Energy. The Government may have certain rights in this invention.