Apparatus for determining the oxygen content in gases

Details Apparatus for determining the oxygen content in gases Apparatus for determining the oxygen content in gases

1985-07-03

1987-02-10

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204424, 204425, 204428, 204429, G01N 2756

Patent

active

046421742

ABSTRACT:
An apparatus for determining oxygen concentration in exhaust gases from an automotive engine is provided which includes a solid electrolytic member of oxygen ion conductive material disposed between a pair of first and second electrodes. In this apparatus, a porous insulating layer is formed on a cylindrical heater made of ceramics and a first electrode is formed on the outer periphery of the porous insulating layer. A solid electrolytic member is formed as a thin film form on the outer periphery of the first electrode layer and a second electrode is formed on the outer periphery of the solid electrolytic film member. Since the solid electrolytic film is formed such that it overlies the outer periphery of the cylindrical heater, it has an adequate structural strength even if formed to be a thinner film.

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