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:
Mar. 08, 2011
Filed:
Apr. 26, 2006
Kevin S. Kidston, New Hudson, MI (US);
Damon R. Frisch, Troy, MI (US);
Brian J. Koch, Berkley, MI (US);
George T. Stephens, Lake Orion, MI (US);
Mario V. Maiorana, Jr., Davisburg, MI (US);
Chihsiung Lo, West Bloomfield, MI (US);
Kevin S. Kidston, New Hudson, MI (US);
Damon R. Frisch, Troy, MI (US);
Brian J. Koch, Berkley, MI (US);
George T. Stephens, Lake Orion, MI (US);
Mario V. Maiorana, Jr., Davisburg, MI (US);
Chihsiung Lo, West Bloomfield, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A charging system for a hybrid vehicle comprises an internal combustion engine, an electric motor generator coupled to the internal combustion engine and operable to be driven as a generator to produce a charging voltage and a battery coupled to the electric motor generator and configured to receive a charge voltage. The charging system further comprises an engine control computer coupled to the internal combustion engine, the electric motor generator and the battery. The engine control computer is configured to determine a threshold for a charging specific fuel consumption (CSFC), calculate an instantaneous CSFC; and initiate active charging of the battery if the instantaneous CSFC is less than or equal to the threshold CSFC.