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Oxygen sensor

  • US 4,140,611 A
  • Filed: 11/29/1977
  • Issued: 02/20/1979
  • Est. Priority Date: 07/25/1977
  • Status: Expired due to Term
First Claim
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1. An oxygen sensor for sensing the concentration of oxygen gas within the exhaust gas produced by an internal combustion engine comprising:

  • a case having an inlet means and an outlet means through which gas passes;

    a solid electrolyte oxygen sensor having two surfaces installed within said case; and

    ,an oxidation catalyzer spaced from and arranged upstream of said solid electrolyte oxygen sensor within said case;

    wherein said inlet means and said oxidation catalyzer are arranged so that a part of the gas which is introduced through said inlet means into said case flows without passing through said oxidation catalyzer, while the other part of said gas passes through said oxidation catalyzer and so that the mixed gas of said two parts contacts one of said surfaces of said solid electrolyte oxygen sensor.

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