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. 13, 2013
Filed:
Aug. 25, 2010
Matthew A. Lang, Churchville, NY (US);
Daniel C. Di Fiore, Scottsburg, NY (US);
William H. Pettit, Rochester, NY (US);
Steven R. Falta, Honeoye Falls, NY (US);
John C. Fagley, Victor, NY (US);
Matthew A. Lang, Churchville, NY (US);
Daniel C. Di Fiore, Scottsburg, NY (US);
William H. Pettit, Rochester, NY (US);
Steven R. Falta, Honeoye Falls, NY (US);
John C. Fagley, Victor, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system and method for correcting an estimation of nitrogen in an anode side of a fuel cell stack. The system includes a fuel cell stack and a pressure sensor for measuring pressure in an anode sub-system. The system also includes a controller configured to control the estimation of nitrogen permeation from the cathode side to the anode side of the stack, where the controller determines if the pressure in the anode sub-system equilibrates with atmospheric pressure in a shorter period of time after shutdown compared to the time necessary for the anode sub-system to reach approximately atmospheric pressure after a previous shutdown or calibrated time value, and corrects the estimation of nitrogen in the anode side of the stack if the pressure equilibrates in a shorter period of time.