JPS6035256U

JPS6035256U - oxygen sensor

Info

Publication number: JPS6035256U
Application number: JP12706483U
Authority: JP
Inventors: 正之任田; 誠男石谷
Original assignee: 日産自動車株式会社
Priority date: 1983-08-17
Filing date: 1983-08-17
Publication date: 1985-03-11

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の酸素センサの模式的断面図、第２図は従
来の触媒活性測定極のみを有するセンサのセンサ出力−
空燃比曲線、第３図は本考案の酸素センサの模式的断面
図、第４図はそのセンサ出力−空燃比曲線、第５図は他
の実施例の酸素センサの模式的断面図である。１・・・基板、２，１２・・・基準極層、３，１３・・
・酸素イオン伝導性固体電解質層、４，１４・・・触媒
高活性測定極層、５，１５・・・触媒低活性測定極層、
１０．２０・・・本考案の酸素−センサ。第２図１０　　　ゴ工刀３ａ　Ｃコニ−］セ０５、Ｘす理論７慾比１．゛ ■ ＼１１１　　１２　　１３　　１４　　１５　　１第５図Fig. 1 is a schematic cross-sectional view of a conventional oxygen sensor, and Fig. 2 is a sensor output of a conventional sensor having only a catalyst activity measuring electrode.
3 is a schematic cross-sectional view of the oxygen sensor of the present invention, FIG. 4 is a sensor output-air-fuel ratio curve thereof, and FIG. 5 is a schematic cross-sectional view of an oxygen sensor of another embodiment. 1... Substrate, 2, 12... Reference electrode layer, 3, 13...
・Oxygen ion conductive solid electrolyte layer, 4, 14... Catalyst high activity measurement electrode layer, 5, 15... Catalyst low activity measurement electrode layer,
10.20...Oxygen sensor of the present invention. Fig. 2 10 Gokoto 3a C Connie] Se05, X Theory 7 Ratio 1.゛■ \1 11 12 13 14 15 1Figure 5

Claims

[Scope of utility model registration request]

(1) An oxygen sensor comprising a porous reference electrode layer, an oxygen ion conductive solid electrolyte layer, and a porous measurement electrode layer, and measures oxygen concentration by bringing the measurement electrode layer into contact with a gas to be measured. In this method, the measurement electrode layer is made of two layers: a porous catalyst high activity measurement electrode layer provided on an oxygen ion conductive solid electrolyte layer, and a porous catalyst low activity measurement electrode layer provided on the catalyst high activity measurement electrode layer. An oxygen sensor characterized by its structure.

(2) The oxygen sensor according to claim 1, wherein the electrode layer for measuring low catalyst activity is made of gold or a metal containing gold.

(3) The oxygen sensor according to claim 1 or 2, wherein the electrode layer for measuring low catalyst activity is provided by a vapor deposition method.