JPH036557U - - Google Patents
Info
- Publication number
- JPH036557U JPH036557U JP9309588U JP9309588U JPH036557U JP H036557 U JPH036557 U JP H036557U JP 9309588 U JP9309588 U JP 9309588U JP 9309588 U JP9309588 U JP 9309588U JP H036557 U JPH036557 U JP H036557U
- Authority
- JP
- Japan
- Prior art keywords
- oxygen concentration
- sensor
- exhaust gas
- sensitivity
- sensing element
- 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 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims 2
- 239000004065 semiconductor Substances 0.000 claims 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Description
第１図ａは本考案の排ガス用ＣＯセンサの実施
例を示す正面図、第１図ｂは同側面図、第１図ｃ
は同裏面図、第２図は本考案の排ガス用ＣＯセン
サにおけるＣＯ検知素子と酸素濃度補償素子の低
抗値の酸素濃度依存性を示すグラフ、第３図は同
ＣＯ検知素子低抗値の酸素濃度によるＣＯ濃度特
性を示すグラフ、第４図は同酸素濃度補償素子抵
抗値の酸素濃度によるＣＯ濃度特性を示すグラフ
、第５図は同酸素濃度補償素子によるＣＯ濃度特
性の補正効果をＣＯ検知素子抵抗値として示した
グラフ、第６図ａは従来の排ガス用ＣＯセンサ正
面図、第６図ｂは同側面図、第７図ａは他の従来
の排ガス用ＣＯセンサの正面図、第７図ｂは同側
面図、第７図ｃは同裏面図である。
１……ＣＯ検知素子、３……ヒーター、４……
酸素濃度補償素子。
Fig. 1a is a front view showing an embodiment of the exhaust gas CO sensor of the present invention, Fig. 1b is a side view of the same, Fig. 1c
is a back view of the same, Figure 2 is a graph showing the oxygen concentration dependence of the low resistance value of the CO sensing element and oxygen concentration compensating element in the exhaust gas CO sensor of the present invention, and Figure 3 is a graph showing the oxygen concentration dependence of the low resistance value of the CO sensing element of the present invention. A graph showing the CO concentration characteristics depending on the oxygen concentration, Fig. 4 is a graph showing the CO concentration characteristics depending on the oxygen concentration of the resistance value of the oxygen concentration compensating element, and Fig. 5 shows the correction effect of the CO concentration characteristics by the oxygen concentration compensating element. Graphs showing detection element resistance values; FIG. 6a is a front view of a conventional exhaust gas CO sensor; FIG. 6b is a side view of the same; FIG. 7a is a front view of another conventional exhaust gas CO sensor; FIG. 7b is a side view of the same, and FIG. 7c is a back view of the same. 1... CO detection element, 3... Heater, 4...
Oxygen concentration compensation element.
Claims (1)
ス用ＣＯセンサにおいて、前記ＣＯ検知素子と同
等の温度依存性を有し、しかもＣＯ感度を有さず
、酸素感度を有する酸素濃度補償素子を、前記Ｃ
Ｏ検知素子を組合せてなり、前記ＣＯ検知素子出
力の酸素濃度依存性を低減させたことを特徴とす
る排ガス用ＣＯセンサ。 In a CO sensor for exhaust gas using an oxide semiconductor as a CO sensing element, an oxygen concentration compensating element that has temperature dependence equivalent to that of the CO sensing element, does not have CO sensitivity, and has oxygen sensitivity,
1. A CO sensor for exhaust gas, characterized in that it is formed by combining an O detection element, and the dependence of the output of the CO detection element on oxygen concentration is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9309588U JPH036557U (en) | 1988-07-15 | 1988-07-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9309588U JPH036557U (en) | 1988-07-15 | 1988-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH036557U true JPH036557U (en) | 1991-01-22 |
Family
ID=31642492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9309588U Pending JPH036557U (en) | 1988-07-15 | 1988-07-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH036557U (en) |
-
1988
- 1988-07-15 JP JP9309588U patent/JPH036557U/ja active Pending