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Lambda sensing with a fuel cell stack

  • US 20030203253A1
  • Filed: 04/30/2002
  • Published: 10/30/2003
  • Est. Priority Date: 04/30/2002
  • Status: Active Grant
First Claim
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1. A fuel cell assembly receiving reactant flows and generating an electric current therefrom, the fuel cell assembly comprising:

  • a plurality of fuel cells arranged in a stacked configuration with said plurality of fuel cells electrically in series, a first fuel cell of said plurality of fuel cells having a voltage output that changes in a known manner in response to changes in lambda of a first reactant flow;

    a voltage monitoring device monitoring said voltage output of said first fuel cell; and

    a controller that receives a signal from said voltage monitoring device corresponding to said voltage output of said first fuel cell, said controller controlling said first reactant flow in response to said signal.

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