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:
Nov. 15, 2011
Filed:
Jun. 15, 2007
Jon R. Sienkowski, Rochester, NY (US);
David A. Arthur, Honeoye Falls, NY (US);
Abdullah B. Alp, West Henrietta, NY (US);
Prasad Gade, Webster, NY (US);
Jon R. Sienkowski, Rochester, NY (US);
David A. Arthur, Honeoye Falls, NY (US);
Abdullah B. Alp, West Henrietta, NY (US);
Prasad Gade, Webster, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for triggering an anode bleed from split fuel cell stacks in a fuel cell system that employs anode flow-shifting. The method requests the bleed if any one of three different conditions are met. Those conditions include that the concentration of nitrogen in the anode side of the split stacks is above a predetermined percentage, the voltage spread between the maximum cell voltage and the minimum cell voltage of two fuel cells in the split stacks is greater than a predetermined spread voltage and the absolute value of the difference between the overall voltage of the two split stacks is greater than a predetermined voltage. The concentration of nitrogen in the anode can be determined in any suitable manner, such as by a nitrogen cross-over model or a sensor.