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Title:
METHOD FOR MANUFACTURING OXYGEN SENSOR
Document Type and Number:
WIPO Patent Application WO/2013/021549
Kind Code:
A1
Abstract:
The invention provides a method for manufacturing an oxygen sensor that is excellent in responsiveness and can be preferably used for diagnosis of catalyst deterioration. An oxygen sensor 1 equipped with an oxygen sensor element 11 comprising a solid electrolyte 21 and Pt coatings, as a pair of electrodes, on both surfaces of the solid electrolyte 21 is manufactured. The method comprises at least steps of: providing a Pt coating 23 on at least one of the solid electrolyte 21 surfaces exposed to the gas to be tested so as to form closed pores 23a inside the Pt coating 23; and heating either the Pt coating 23 or 24 exposed to gas to be tested in a gas atmosphere with higher oxygen concentration than that of the atmospheric gas.

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Inventors:
KAWAI MASASHI (JP)
Application Number:
PCT/JP2012/004507
Publication Date:
February 14, 2013
Filing Date:
July 12, 2012
Export Citation:
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Assignee:
TOYOTA MOTOR CO LTD (JP)
KAWAI MASASHI (JP)
International Classes:
G01N27/407
Foreign References:
GB1505983A1978-04-05
US5326597A1994-07-05
US20010038923A12001-11-08
JP8020404B
JPS6485440A1989-03-30
JP2000105213A2000-04-11
JP2002228622A2002-08-14
JPH09264871A1997-10-07
Attorney, Agent or Firm:
HIRAKI, Yusuke et al. (5-1 Atago 2-chome, Minato-k, Tokyo 32, JP)
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