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:
Sep. 01, 2020
Filed:
Sep. 18, 2017
GM Global Technology Operations Llc, Detroit, MI (US);
Robert S. Foley, Rochester, NY (US);
Jeffrey J. Gagliardo, Clarkston, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method of operating a fuel cell stack that powers a vehicle includes determining when the vehicle is in a non-moving state, calculating an Oconcentration over time of an assumed enclosed space while the vehicle is in the non-moving state, establishing a set of Oconcentration concern levels that includes a first Oconcentration concern level being less than a standard atmospheric Oconcentration and a second Oconcentration concern level being less than the first Oconcentration concern level, comparing the Oconcentration of the assumed enclosed space over time with the set of Oconcentration concern levels, and operating the fuel cell stack without restriction when the vehicle is in the non-moving state so long as the Oconcentration of the assumed enclosed space remains greater than the first Oconcentration concern level.