JPH0177946U - - Google Patents
Info
- Publication number
- JPH0177946U JPH0177946U JP1987173279U JP17327987U JPH0177946U JP H0177946 U JPH0177946 U JP H0177946U JP 1987173279 U JP1987173279 U JP 1987173279U JP 17327987 U JP17327987 U JP 17327987U JP H0177946 U JPH0177946 U JP H0177946U
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- oxygen sensor
- sensor element
- solid electrolyte
- attached
- 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.)
- Pending
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000007784 solid electrolyte Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 239000003054 catalyst Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Description
第１図ａ、本考案の酸素センサ素子の断面図、
第１図ｂは第１図ａの部分拡大図、第２図は実施
例の外側電極の第一例の触媒層を示す断面図、第
３図は本考案の外側電極に第一例触媒層を用いた
場合の、耐久試験時間と酸素センサ出力λの変化
量の関係を示すグラフ、第４図は外側電極上の第
２例触媒層を示す断面図、第５図は外側電極の第
３例触媒層を示す断面図、第６図は第３例触媒を
用いた場合の耐久性能を示す図、第７図は同じく
ＮＯｘと酸素センサ出力のリーン側へのλ変化量
の関係を示すグラフ、第８図は従来の酸素センサ
素子の断面拡大図である。
１，１１，２１…固体電解質、２，１２，２２
…内側電極、３，１３，２３…外側電極、５…保
護層、１５，２５，２６…触媒層。
FIG. 1a, sectional view of the oxygen sensor element of the present invention,
FIG. 1b is a partially enlarged view of FIG. 1a, FIG. 2 is a cross-sectional view showing the catalyst layer of the first example of the outer electrode of the present invention, and FIG. 3 is the catalyst layer of the first example of the outer electrode of the present invention. Graph showing the relationship between the durability test time and the amount of change in the oxygen sensor output λ when using A cross-sectional view showing the example catalyst layer, Fig. 6 is a diagram showing the durability performance when using the third example catalyst, and Fig. 7 is a graph showing the relationship between NOx and the amount of λ change in the oxygen sensor output towards the lean side. , FIG. 8 is an enlarged cross-sectional view of a conventional oxygen sensor element. 1, 11, 21...solid electrolyte, 2, 12, 22
...Inner electrode, 3,13,23...Outer electrode, 5...Protective layer, 15,25,26...Catalyst layer.
Claims (1)
面に第１電極を付着させ、外側面に第２電極を付
着させてなる車両排出ガス中の酸素濃度を検出す
る酸素センサ素子において、前記第１電極上に耐
熱性酸化物を主成分とする保ゴ膜を形成すること
を特徴とする酸素センサ素子。 In an oxygen sensor element for detecting oxygen concentration in vehicle exhaust gas, the first electrode is attached to the inner surface of a tubular ion-conductive solid electrolyte sealed at one end, and the second electrode is attached to the outer surface of the tubular ion-conductive solid electrolyte. An oxygen sensor element characterized by forming a protective film containing a heat-resistant oxide as a main component on an electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987173279U JPH0177946U (en) | 1987-11-13 | 1987-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987173279U JPH0177946U (en) | 1987-11-13 | 1987-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0177946U true JPH0177946U (en) | 1989-05-25 |
Family
ID=31465206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987173279U Pending JPH0177946U (en) | 1987-11-13 | 1987-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0177946U (en) |
-
1987
- 1987-11-13 JP JP1987173279U patent/JPH0177946U/ja active Pending
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