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:
Aug. 24, 2010
Filed:
May. 18, 2004
Thomas Hild, Mainz, DE;
Thomas Herbig, Darmstadt, DE;
Bernhard Wnendt, Russelsheim, DE;
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A fuel cell stack receiving oxidant into a compressor progressively pressurizing the oxidant from an inlet pressure to a discharge pressure where a fluid connection exists between oxidant effluent from the fuel cell stack and the progressively pressurized oxidant within the compressor at an intermediate pressure between the compressor inlet pressure and the compressor discharge pressure. A pressure regulator is provided for managing pressure of the cell oxidant effluent recycle flow to the compressor, and measurements are taken of compressor power consumption and/or compressor discharge temperature, humidity, and/or pressure to further control the regulator.