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:
Mar. 08, 2016
Filed:
Mar. 15, 2013
GM Global Technology Operations Llc, Detroit, MI (US);
Derek R. Lebzelter, Fairport, NY (US);
Loren Devries, Ionia, NY (US);
Todd K. Preston, Highland, MI (US);
Joseph Mussro, Pittsford, NY (US);
John P. Nolan, Rochester, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system and method for operating a fuel cell stack of a fuel cell system in a vehicle when an error in cathode air flow rate is detected. The system and method include estimating a cathode air flow rate and detecting an error in the estimated cathode air flow rate. The system and method also include utilizing high frequency resistance measurements from a high frequency resistance sensor to control a relative humidity of the fuel cell stack when the error in the estimated cathode air flow rate has been detected.