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:
Aug. 04, 2015
Filed:
Sep. 03, 2009
Applicant:
George T. Washburn, Royal Oak, MI (US);
Inventor:
George T. Washburn, Royal Oak, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P 7/00 (2006.01); B60H 1/02 (2006.01); F01P 7/16 (2006.01);
U.S. Cl.
CPC ...
F01P 7/162 (2013.01); F01P 2025/00 (2013.01); F01P 2025/13 (2013.01); F01P 2025/62 (2013.01); F01P 2025/66 (2013.01); F01P 2037/02 (2013.01); F01P 2060/08 (2013.01); F01P 2060/16 (2013.01);
Abstract
An engine control system for a vehicle comprises a pump control module and a heating request determination module. The pump control module disengages a switchable water pump from an engine upon startup of the engine. The heating request determination module generates a heat request signal that indicates whether heating of a passenger cabin of the vehicle has been requested based on ambient air temperature, humidity of ambient air, and a status of an air conditioner clutch. The pump control module selectively engages the switchable water pump after the heat request signal is generated.