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Oxygen sensor and method for manufacturing the oxygen sensor

  • US 7,827,848 B2
  • Filed: 08/15/2007
  • Issued: 11/09/2010
  • Est. Priority Date: 08/15/2007
  • Status: Active Grant
First Claim
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1. An oxygen sensor, comprising:

  • a zirconia layer having first and second sides, the second side being opposite the first side;

    a first electrode disposed on the first side of the zirconia layer;

    a second electrode disposed on the second side of the zirconia layer;

    a channel structure on the first side of the zirconia layer in communication with ambient air and the first electrode, comprising a porous material configured to route air through the channel to the first electrode while preventing hydrocarbons from flowing through the channel and contacting the first electrode, such that a signal between the first and second electrodes is indicative of an amount of oxygen in exhaust gases contacting the second electrode.

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