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:
May. 13, 2014
Filed:
Apr. 05, 2010
Jun Cai, Rochester, NY (US);
Joseph Nicholas Lovria, Honeoye Falls, NY (US);
Sriram Ganapathy, Rochester, NY (US);
Jaehak Jung, Pittsford, NY (US);
John P. Salvador, Penfield, NY (US);
Jun Cai, Rochester, NY (US);
Joseph Nicholas Lovria, Honeoye Falls, NY (US);
Sriram Ganapathy, Rochester, NY (US);
Jaehak Jung, Pittsford, NY (US);
John P. Salvador, Penfield, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for determining when to inject hydrogen gas into the anode side of a fuel cell stack associated with a fuel cell vehicle when the vehicle is off. The method includes estimating the concentration of hydrogen gas in the anode side of the fuel cell stack using a gas concentration model and determining if the estimated concentration of hydrogen gas is below a first predetermined threshold. If the estimated hydrogen gas is less than the threshold, then hydrogen gas is injected into the anode side from a hydrogen source. While the hydrogen gas is being injected, the method compares the estimated concentration of the hydrogen gas in the anode side to a desired concentration, and generates an error signal there between. If the error signal is greater than a second predetermined threshold, the algorithm continues to inject the hydrogen into the anode side of the fuel cell stack.