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:
Oct. 02, 2007
Filed:
Oct. 29, 2003
Volker Formanski, Wiesbaden, DE;
Thomas Herbig, Darmstadt, DE;
George R. Woody, Wiesbaden, DE;
John P. Salvador, Penfield, NY (US);
Steven D. Burch, Honeoye Falls, NY (US);
Uwe Hannesen, Brechen, DE;
Volker Formanski, Wiesbaden, DE;
Thomas Herbig, Darmstadt, DE;
George R. Woody, Wiesbaden, DE;
John P. Salvador, Penfield, NY (US);
Steven D. Burch, Honeoye Falls, NY (US);
Uwe Hannesen, Brechen, DE;
General Motors Corporation, Detroit, MI (US);
Abstract
A fuel cell system that employs a recuperative heat exchanger to provide additional cooling for the compressed charge air applied to the cathodes of the fuel cells in the fuel cell stack. The cathode exhaust gas is applied to the recuperative heat exchanger so that the cathode exhaust gas cools the charge air heated by the compressed air. A cathode exhaust gas expander is provided in combination with the recuperative heat exchanger that uses the energy in the heated cathode exhaust gas to power the charge air compressor. An anode exhaust gas combustor can be provided that burns residual hydrogen in the anode exhaust gas to further heat the cathode exhaust gas before it is applied to the expander.