JPS58112958U - Oxygen sensor heater current control device - Google Patents
Oxygen sensor heater current control deviceInfo
- Publication number
- JPS58112958U JPS58112958U JP921682U JP921682U JPS58112958U JP S58112958 U JPS58112958 U JP S58112958U JP 921682 U JP921682 U JP 921682U JP 921682 U JP921682 U JP 921682U JP S58112958 U JPS58112958 U JP S58112958U
- Authority
- JP
- Japan
- Prior art keywords
- oxygen sensor
- control device
- current control
- sensor
- oxygen
- 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
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の第１実施例の概略構成図、第２図は第
２実施例の概略構成図、第３図は制御回路のブロック図
、第４図、第５図はそれぞれ作動特性を示す説明図であ
る。
１・・・・・・機関本体、２・・・・・・吸気通路、３
・・・・・・排気通路、４・・・・・・酸素センサ、５
・・・・・・制御回路、６・・・・・・エアフローメー
タ、７・・・・・・回転数センサ、８・・・・・・排温
センサ、１０・・・・・・判別回路、１１・・・・・・
電流制御回路、１２・・・・・・センサーヒータ部。Fig. 1 is a schematic diagram of the first embodiment of the present invention, Fig. 2 is a schematic diagram of the second embodiment, Fig. 3 is a block diagram of the control circuit, and Figs. 4 and 5 show operating characteristics. FIG. 1... Engine body, 2... Intake passage, 3
...Exhaust passage, 4...Oxygen sensor, 5
... Control circuit, 6 ... Air flow meter, 7 ... Rotation speed sensor, 8 ... Exhaust temperature sensor, 10 ... Discrimination circuit , 11...
Current control circuit, 12...Sensor heater section.
Claims (1)
るセンサヒータ部とを有する酸素センサを機関排気系に
取付け、この酸素センサの検出酸素濃度にもとづいて混
合気の空燃比をフィードバック制御するようにした内燃
機関において、機関高出力時や排気高温時などの機関運
転状態を検出する手段と、この運転状態検出時に上記セ
ンサヒータ部に対する通電を遮断する制御手段とを備え
たことを特徴とする酸素センサのヒータ電流制御装置。An oxygen sensor having an oxygen ion conductive solid electrolyte and a sensor heater section that heats the solid electrolyte is attached to the engine exhaust system, and the air-fuel ratio of the mixture is feedback-controlled based on the oxygen concentration detected by this oxygen sensor. An oxygen sensor for an internal combustion engine, comprising means for detecting an engine operating state such as high engine output or high exhaust temperature, and a control means for cutting off energization to the sensor heater section when the operating state is detected. heater current control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP921682U JPS58112958U (en) | 1982-01-26 | 1982-01-26 | Oxygen sensor heater current control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP921682U JPS58112958U (en) | 1982-01-26 | 1982-01-26 | Oxygen sensor heater current control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58112958U true JPS58112958U (en) | 1983-08-02 |
Family
ID=30021870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP921682U Pending JPS58112958U (en) | 1982-01-26 | 1982-01-26 | Oxygen sensor heater current control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58112958U (en) |
-
1982
- 1982-01-26 JP JP921682U patent/JPS58112958U/en active Pending
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