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Controlled shutdown of a fuel cell

United States Patent

April 23, 2002
View the Complete Patent at the US Patent & Trademark Office
A method is provided for the shutdown of a fuel cell system to relieve system overpressure while maintaining air compressor operation, and corresponding vent valving and control arrangement. The method and venting arrangement are employed in a fuel cell system, for instance a vehicle propulsion system, comprising, in fluid communication, an air compressor having an outlet for providing air to the system, a combustor operative to provide combustor exhaust to the fuel processor.
Clingerman; Bruce J. (Palmyra, NY), Keskula; Donald H. (Webster, NY)
General Motors Corporation (Detroit, MI)
09/ 502,876
February 11, 2000
GOVERNMENT SUPPORT The Government of the United States of America has certain rights in this invention pursuant to Agreement No. DE-AC02-90CH10435 awarded by the U.S. Department of Energy.