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Optimization to reduce fuel consumption in charge depleting mode

United States Patent

August 26, 2014
View the Complete Patent at the US Patent & Trademark Office
A powertrain includes an internal combustion engine, a motor utilizing electrical energy from an energy storage device, and a plug-in connection. A Method for controlling the powertrain includes monitoring a fuel cut mode, ceasing a fuel flow to the engine based upon the fuel cut mode, and through a period of operation including acceleration of the powertrain, providing an entirety of propelling torque to the powertrain with the electrical energy from the energy storage device based upon the fuel cut mode.
Roos; Bryan Nathaniel (West Bloomfield, MI), Martini; Ryan D. (Wolverine Lake, MI)
GM Global Technology Operations LLC (Detroit, MI)
13/ 027,499
February 15, 2011
GOVERNMENT CONTRACT RIGHTS The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of Cooperative Agreement Number DE-FC26-08NT04386 awarded by the U.S. Department of Energy.