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. 30, 2004
Filed:
Mar. 26, 2003
Applicant:
Inventors:
Joseph E. Robbins, Mayville, MI (US);
Chandran B. Santanam, Rochester Hills, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01P 7/14 ;
U.S. Cl.
CPC ...
F01P 7/14 ;
Abstract
A cooling system has a system bypass to reduce parasitic losses in an internal combustion engine. The system bypass has a diverter valve actuated by a control module to selectively control the amount of coolant flow through the engine without regard to the speed of the water pump. As less coolant is needed to cool the engine, the diverter valve directs more coolant through the bypass to be recirculated to the water pump. The energy absorbed by the water pump is reduced by the reduced coolant flow, which increases the efficiency of the system and reduces engine parasitic losses.