The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2013
Filed:
Dec. 17, 2012
GM Global Technology Operations, Inc., Detroit, MI (US);
John Janczak, Commerce Township, MI (US);
Anthony H. Heap, Ann Arbor, MI (US);
Neal A. Chaperon, Commerce Township, MI (US);
Sean W. McGrogan, Ann Arbor, MI (US);
James Sydenstricker, Linden, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method of operating a hybrid powertrain including an engine, an electric motor and a high voltage battery includes preventing fuel flow to the engine when the high voltage battery includes a state of charge at or above a pre-defined upper limit, and when the hybrid powertrain is operating in a second fueling condition in which fuel flow to the engine is preferably maintained. The engine is rotated with torque supplied by the electric motor to maintain rotation of the engine without producing any engine torque.