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. 31, 2012
Filed:
Dec. 11, 2009
David A. Arthur, Honeoye Falls, NY (US);
Dieter Kaimann, Mainz, DE;
Thomas W. Tighe, Bloomfield, NY (US);
Steven G. Goebel, Victor, NY (US);
John P. Salvador, Penfield, NY (US);
Gary M. Robb, Honeoye Falls, NY (US);
Daniel I. Harris, Honeoye Falls, NY (US);
Joseph Nicholas Lovria, Honeoye Falls, NY (US);
Balasubramanian Lakshmanan, Pittsford, NY (US);
Daniel T. Folmsbee, Victor, NY (US);
David A. Arthur, Honeoye Falls, NY (US);
Dieter Kaimann, Mainz, DE;
Thomas W. Tighe, Bloomfield, NY (US);
Steven G. Goebel, Victor, NY (US);
John P. Salvador, Penfield, NY (US);
Gary M. Robb, Honeoye Falls, NY (US);
Daniel I. Harris, Honeoye Falls, NY (US);
Joseph Nicholas Lovria, Honeoye Falls, NY (US);
Balasubramanian Lakshmanan, Pittsford, NY (US);
Daniel T. Folmsbee, Victor, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for reducing the probability of an air/hydrogen front in a fuel cell stack is disclosed that includes closing anode valves for an anode side of the fuel cell stack to permit a desired quantity of hydrogen to be left in the anode side upon shutdown and determining a schedule to inject hydrogen during the time the fuel cell stack is shutdown. The pressure on an anode input line is determined and a discrete amount of hydrogen is injected into the anode side of the stack according to the determined schedule by opening anode input line valves based on the determined pressure along the anode input line so as to inject the hydrogen into the anode side of the stack.