JPS62193560U - - Google Patents
Info
- Publication number
- JPS62193560U JPS62193560U JP8114686U JP8114686U JPS62193560U JP S62193560 U JPS62193560 U JP S62193560U JP 8114686 U JP8114686 U JP 8114686U JP 8114686 U JP8114686 U JP 8114686U JP S62193560 U JPS62193560 U JP S62193560U
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- protective layer
- layer
- catalyst protective
- oxygen sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 claims description 19
- 239000011241 protective layer Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 claims 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
第１図は本考案に係わる酸素センサの一実施例
の構成を示す断面図、第２図は同上の実施例の部
分拡大断面図、第３図は従来の酸素センサの構成
を示す断面図、第４図は同上の従来例の部分拡大
断面図である。
１…セラミツク管、４…第１触媒層、５…第１
触媒保護層、６…第２触媒層、７…第２触媒保護
層、９…２重層、１１…ボール体。
FIG. 1 is a sectional view showing the structure of an embodiment of an oxygen sensor according to the present invention, FIG. 2 is a partially enlarged sectional view of the same embodiment, and FIG. 3 is a sectional view showing the structure of a conventional oxygen sensor. FIG. 4 is a partially enlarged sectional view of the conventional example same as above. 1... Ceramic tube, 4... First catalyst layer, 5... First
Catalyst protective layer, 6... Second catalyst layer, 7... Second catalyst protective layer, 9... Double layer, 11... Ball body.
Claims (1)
に電極を夫々形成し、該セラミツク管の先端部外
表面に反応促進用の第１触媒層と該第１触媒層を
覆う第１触媒保護層とを形成すると共に、前記第
１触媒保護層の外表面に鉛吸着用の第２触媒層と
該第２触媒層を覆う第２触媒保護層とを形成して
なり、前記両電極間に発生する起電力により被検
出気体の酸素濃度を検出する酸素センサにおいて
、前記第２触媒保護層形成材料と同種の材料から
なり、前記第２触媒層と第２触媒保護層との２重
層の形成時に該２重層と共に第１触媒保護層の外
表面に付着されて２重層中に介在される複数のボ
ール体を設けたことを特徴とする酸素センサ。 (2) 第２触媒保護層とボール体が夫々γ―アル
ミナからなる実用新案登録請求の範囲第１項記載
の酸素センサ。[Claims for Utility Model Registration] (1) Electrodes are respectively formed on the inner and outer surfaces of a ceramic tube with a closed tip, and a first catalyst layer for promoting a reaction and the first catalyst are formed on the outer surface of the tip of the ceramic tube. a first catalyst protective layer covering the first catalyst protective layer, and a second catalyst layer for adsorbing lead and a second catalyst protective layer covering the second catalyst layer on the outer surface of the first catalyst protective layer. In the oxygen sensor that detects the oxygen concentration of the detected gas by the electromotive force generated between the two electrodes, the second catalyst protective layer is made of the same kind of material as the second catalyst protective layer forming material, and the second catalyst layer and the second catalyst protective layer are made of the same kind of material as the second catalyst protective layer forming material. 1. An oxygen sensor comprising: a plurality of balls that are attached to the outer surface of the first catalyst protective layer together with the double layer and interposed in the double layer when the double layer is formed. (2) The oxygen sensor according to claim 1, in which the second catalyst protective layer and the ball body are each made of γ-alumina.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8114686U JPH068550Y2 (en) | 1986-05-30 | 1986-05-30 | Oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8114686U JPH068550Y2 (en) | 1986-05-30 | 1986-05-30 | Oxygen sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62193560U true JPS62193560U (en) | 1987-12-09 |
| JPH068550Y2 JPH068550Y2 (en) | 1994-03-02 |
Family
ID=30932618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8114686U Expired - Lifetime JPH068550Y2 (en) | 1986-05-30 | 1986-05-30 | Oxygen sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH068550Y2 (en) |
-
1986
- 1986-05-30 JP JP8114686U patent/JPH068550Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH068550Y2 (en) | 1994-03-02 |