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Method and apparatus for operating a powertrain system upon detecting a stuck-closed clutch

United States Patent

February 18, 2014
View the Complete Patent at the US Patent & Trademark Office
A powertrain system includes a multi-mode transmission having a plurality of torque machines. A method for controlling the powertrain system includes identifying all presently applied clutches including commanded applied clutches and the stuck-closed clutch upon detecting one of the torque-transfer clutches is in a stuck-closed condition. A closed-loop control system is employed to control operation of the multi-mode transmission accounting for all the presently applied clutches.
Hansen; R. Anthony (Redford, MI)
GM Global Technology Operations LLC (Detroit, MI)
13/ 460,892
May 1, 2012
GOVERNMENT CONTRACT RIGHTS This invention was made with U.S. Government support under Agreement No. DE-FC26-08NT04386 awarded by the U.S. Department of Energy The U.S. Government may have certain rights in this invention.