JPS6214360U - - Google Patents
Info
- Publication number
- JPS6214360U JPS6214360U JP10568685U JP10568685U JPS6214360U JP S6214360 U JPS6214360 U JP S6214360U JP 10568685 U JP10568685 U JP 10568685U JP 10568685 U JP10568685 U JP 10568685U JP S6214360 U JPS6214360 U JP S6214360U
- Authority
- JP
- Japan
- Prior art keywords
- output
- exhaust gas
- comparison means
- gas sensor
- detects
- 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
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 4
- 238000001514 detection method Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は実施例の回路図、第２図は実施例に用
いる排ガスセンサの特性図、第３図は排ガスセン
サの正面図、第４図は変形例の回路図で有る。
図において、４……金属酸化物半導体、１２…
…ヒータ、Ｃ２，Ｃ３……比較回路、２２，２４
……単安定マルチバイブレータ、２６……アツプ
ダウンカウンター。
FIG. 1 is a circuit diagram of an embodiment, FIG. 2 is a characteristic diagram of an exhaust gas sensor used in the embodiment, FIG. 3 is a front view of the exhaust gas sensor, and FIG. 4 is a circuit diagram of a modified example. In the figure, 4...metal oxide semiconductor, 12...
...Heater, C2, C3... Comparison circuit, 22, 24
...monostable multivibrator, 26...up-down counter.
Claims (1)
ガスセンサの加熱温度を、空燃比の当量点付近で
の排ガスセンサの出力の動特性から検出する装置
において、 最適加熱温度付近の動特性での出力の極大値よ
りやや低い値を、センサの出力が通過したことを
検出して、出力を発する第１比較手段と 最適加熱温度付近の動特性での出力の極小値よ
りやや高い値を、センサの出力が通過したことを
検出して、出力を発する第２比較手段と 第１比較手段と第２比較手段の一方の出力によ
り加算され、他方の出力により減算されて、排ガ
スセンサの加熱温度に対応した出力を発するカウ
ンター、 とを設けたことを特徴とする排ガスセンサの温度
検出装置。[Claim for Utility Model Registration] Optimal heating in a device that detects the heating temperature of an exhaust gas sensor using changes in the resistance value of a metal oxide semiconductor from the dynamic characteristics of the output of the exhaust gas sensor near the equivalence point of the air-fuel ratio. A first comparison means that detects that the output of the sensor has passed a value slightly lower than the maximum value of the output in the dynamic characteristics near the temperature and generates an output, and a minimum value of the output in the dynamic characteristics near the optimal heating temperature. A value slightly higher than that is added by the second comparison means that detects that the sensor output has passed and generates an output, and the output of one of the first comparison means and the second comparison means, and is subtracted by the output of the other. A temperature detection device for an exhaust gas sensor, comprising: a counter that outputs an output corresponding to the heating temperature of the exhaust gas sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10568685U JPS6214360U (en) | 1985-07-11 | 1985-07-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10568685U JPS6214360U (en) | 1985-07-11 | 1985-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6214360U true JPS6214360U (en) | 1987-01-28 |
Family
ID=30980346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10568685U Pending JPS6214360U (en) | 1985-07-11 | 1985-07-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6214360U (en) |
-
1985
- 1985-07-11 JP JP10568685U patent/JPS6214360U/ja active Pending
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