JPS63150367U - - Google Patents
Info
- Publication number
- JPS63150367U JPS63150367U JP4205787U JP4205787U JPS63150367U JP S63150367 U JPS63150367 U JP S63150367U JP 4205787 U JP4205787 U JP 4205787U JP 4205787 U JP4205787 U JP 4205787U JP S63150367 U JPS63150367 U JP S63150367U
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- internal combustion
- contact
- oxygen sensor
- combustion engine
- 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
- 239000010410 layer Substances 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052596 spinel Inorganic materials 0.000 claims description 3
- 239000011029 spinel Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 150000003057 platinum Chemical class 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Description
第１図は本考案の一実施例を示す断面図、第２
図は従来例を示す断面図、第３図は同上実施例に
おける酸素センサの出力特性を示すグラフ、第４
図は空燃比と排気成分濃度との関係を示すグラフ
である。
１……セラミツク管、２，３……電極、４……
白金触媒層、５……第１スピネル層、６……還元
触媒含有多孔質層、７……第２スピネル層、８…
…保護層。
Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a sectional view showing a conventional example, FIG. 3 is a graph showing the output characteristics of the oxygen sensor in the above embodiment, and FIG.
The figure is a graph showing the relationship between air-fuel ratio and exhaust component concentration. 1... Ceramic tube, 2, 3... Electrode, 4...
Platinum catalyst layer, 5... first spinel layer, 6... porous layer containing reduction catalyst, 7... second spinel layer, 8...
…protective layer.
Claims (1)
成すると共に、外表面に白金触媒層及びこの白金
触媒層を覆う保護層を形成し、大気に接触させた
内表面側の電極と、機関排気に接触させた外表面
側の電極との間に発生する起電力により機関排気
の酸素濃度を検出するようにした内燃機関用酸素
センサにおいて、前記保護層を、窒素酸化物の還
元反応を促進させる還元触媒粒子を含有させた還
元触媒含有多孔質層をスピネル層で挾んで形成し
たことを特徴とする内燃機関用酸素センサ。 Electrodes are formed on each part of the inner and outer surfaces of the ceramic base material, and a platinum catalyst layer and a protective layer covering this platinum catalyst layer are formed on the outer surface, and the electrodes on the inner surface that are in contact with the atmosphere and the engine exhaust are formed. In an oxygen sensor for an internal combustion engine that detects the oxygen concentration of engine exhaust gas by an electromotive force generated between an electrode on the outer surface side that is brought into contact with the An oxygen sensor for an internal combustion engine, characterized in that it is formed by sandwiching a reduction catalyst-containing porous layer containing reduction catalyst particles between spinel layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4205787U JPS63150367U (en) | 1987-03-24 | 1987-03-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4205787U JPS63150367U (en) | 1987-03-24 | 1987-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63150367U true JPS63150367U (en) | 1988-10-04 |
Family
ID=30857620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4205787U Pending JPS63150367U (en) | 1987-03-24 | 1987-03-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63150367U (en) |
-
1987
- 1987-03-24 JP JP4205787U patent/JPS63150367U/ja active Pending
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