JPS642154U - - Google Patents
Info
- Publication number
- JPS642154U JPS642154U JP9652787U JP9652787U JPS642154U JP S642154 U JPS642154 U JP S642154U JP 9652787 U JP9652787 U JP 9652787U JP 9652787 U JP9652787 U JP 9652787U JP S642154 U JPS642154 U JP S642154U
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- internal combustion
- contact
- oxygen sensor
- engine exhaust
- 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 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 229910052697 platinum Inorganic materials 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 2
- 239000000463 material Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 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
、第５図はＮＯｘ転化率と還元触媒含有率との関
係を示すグラフである。
１……セラミツク管、２，３……電極、７……
還元触媒混在白金触媒層。
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, and FIG. 5 is a graph showing the relationship between NOx conversion rate and reduction catalyst content rate. 1... Ceramic tube, 2, 3... Electrode, 7...
Platinum catalyst layer containing reduction catalyst.
Claims (1)
成すると共に、外表面に白金触媒層を形成し、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、窒素酸化物の還
元反応を促進させる還元触媒粒子を前記白金触媒
層に混在させ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 is formed on the outer surface, with the electrode on the inner surface in contact with the atmosphere and the electrode on the outer surface in contact with the engine exhaust. In an oxygen sensor for an internal combustion engine that detects the oxygen concentration of engine exhaust by the electromotive force generated between Features: Oxygen sensor for internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9652787U JPS642154U (en) | 1987-06-25 | 1987-06-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9652787U JPS642154U (en) | 1987-06-25 | 1987-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS642154U true JPS642154U (en) | 1989-01-09 |
Family
ID=30962363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9652787U Pending JPS642154U (en) | 1987-06-25 | 1987-06-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS642154U (en) |
-
1987
- 1987-06-25 JP JP9652787U patent/JPS642154U/ja active Pending