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:
Jul. 03, 2012
Filed:
May. 27, 2009
Applicants:
Allen J. Lehmen, Howell, MI (US);
Kevin J. Smith, Howell, MI (US);
James B. Nicholson, Albion, MI (US);
Inventors:
Allen J. Lehmen, Howell, MI (US);
Kevin J. Smith, Howell, MI (US);
James B. Nicholson, Albion, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D 3/00 (2006.01); G05D 1/00 (2006.01); B60K 6/20 (2007.10);
U.S. Cl.
CPC ...
Abstract
A method for controlling a hybrid powertrain system includes commanding engine operation to transition from an engine-off state to an engine-on state. A control scheme detects engine firing based upon input speed, input torque and a change in the input torque.