JPS61112260U

JPS61112260U -

Info

Publication number: JPS61112260U
Application number: JP19987284U
Authority: JP
Priority date: 1984-12-27
Filing date: 1984-12-27
Publication date: 1986-07-16

Description

[Brief explanation of drawings]

第１図は実施例の排ガスセンサの部分切り欠き
部付き斜視図、第２図はその長手方向断面図、第
３図は実施例に用いるｎ形ガス検出片の断面図、
第４図は変形例の排ガスセンサの要部断面図、第
５図は付帯回路のブロツク図、第６〜第７図は実
施例の特性図で有る。第８図は他の実施例の斜視
図で、第９図はその―方向断面図で有る。２，１０２……基体、４……ヒータパイプ、６
，１０６……発熱部、８，９，１０８……ｎ形ガ
ス検出片、１０，１１，１１０……ｐ形ガス検出
片、２０，１２０，１２１……酸化触媒層、３６
……ハニカム、３８……酸化触媒。 FIG. 1 is a perspective view with a partial cutout of the exhaust gas sensor of the example, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a sectional view of an n-type gas detection piece used in the example.
FIG. 4 is a sectional view of a main part of a modified exhaust gas sensor, FIG. 5 is a block diagram of an auxiliary circuit, and FIGS. 6 and 7 are characteristic diagrams of an embodiment. FIG. 8 is a perspective view of another embodiment, and FIG. 9 is a sectional view thereof in the - direction. 2,102... Base body, 4... Heater pipe, 6
, 106... Heat generating part, 8, 9, 108... N-type gas detection piece, 10, 11, 110... P-type gas detection piece, 20, 120, 121... Oxidation catalyst layer, 36
...Honeycomb, 38...Oxidation catalyst.

Claims

[Claims for Utility Model Registration] (1) An insulating substrate supports an n-type gas detection piece using an n-type metal oxide semiconductor and a p-type gas detection piece using a p-type metal oxide semiconductor. In the exhaust gas sensor, a heater having a film-like heat generating part embedded inside an insulator is attached to the base body at a position where both the gas detection pieces can be heated, and at least one of the gas detection pieces is oxidized. An exhaust gas sensor characterized by being equipped with a filter for removing unreacted components in exhaust gas containing a catalyst as an active ingredient. (2) The exhaust gas sensor according to claim (1), wherein the filter is a honeycomb with an oxidation catalyst. (3) The exhaust gas sensor according to claim (1), wherein the filter is an oxidation catalyst layer covering at least one surface of the gas detection piece.