Skip to Content
Find More Like This
Return to Search

Method and apparatus for controlling a powertrain system including a multi-mode transmission

United States Patent

September 8, 2015
View the Complete Patent at the US Patent & Trademark Office
A powertrain including an engine and torque machines is configured to transfer torque through a multi-mode transmission to an output member. A method for controlling the powertrain includes employing a closed-loop speed control system to control torque commands for the torque machines in response to a desired input speed. Upon approaching a power limit of a power storage device transferring power to the torque machines, power limited torque commands are determined for the torque machines in response to the power limit and the closed-loop speed control system is employed to determine an engine torque command in response to the desired input speed and the power limited torque commands for the torque machines.
Hessell; Steven M. (Clarkston, MI), Morris; Robert L. (Milford, MI), McGrogan; Sean W. (Ann Arbor, MI), Heap; Anthony H. (Ann Arbor, MI), Mendoza; Gil J. (Novi, MI)
13/ 495,037
June 13, 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.