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. 16, 2008
Filed:
Jul. 23, 2004
Abdullah B. Alp, Rochester, NY (US);
Bruce J. Clingerman, Palmyra, NY (US);
Jason R. Kolodziej, West Henrietta, NY (US);
Brian D. Shaffer, Fairport, NY (US);
Donald H. Keskula, Webster, NY (US);
Abdullah B. Alp, Rochester, NY (US);
Bruce J. Clingerman, Palmyra, NY (US);
Jason R. Kolodziej, West Henrietta, NY (US);
Brian D. Shaffer, Fairport, NY (US);
Donald H. Keskula, Webster, NY (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A temperature control system and method for a fuel cell stack cooling system is disclosed. The temperature control system includes a coolant circulation line for circulating a coolant to and from a fuel cell stack. A coolant pump is provided in the coolant circulation line, and a pump ΔP sensor is provided in fluid communication with the coolant circulation line on inlet and outlet sides of the coolant pump. The pump ΔP sensor measures a change in pump pressure between the inlet and outlet sides of the coolant pump. A pump map is provided having correlated values of pump speed, change in pump pressure and coolant flow rate for correlating the coolant flow rate with the pump speed and the change in pump pressure to attain a desired coolant flow rate for optimum fuel stack cooling.