JPS5840534U - Air-fuel ratio control device for internal combustion engines - Google Patents
Air-fuel ratio control device for internal combustion enginesInfo
- Publication number
- JPS5840534U JPS5840534U JP13408481U JP13408481U JPS5840534U JP S5840534 U JPS5840534 U JP S5840534U JP 13408481 U JP13408481 U JP 13408481U JP 13408481 U JP13408481 U JP 13408481U JP S5840534 U JPS5840534 U JP S5840534U
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- comparator
- fuel ratio
- air
- 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.)
- Granted
Links
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案による内燃機関の空燃比制御装置の一実
施例を示す電気回路図、第２図は第１図の電気回路図の
特性図を示す。
１・・・・・・酸素濃度検出器、２・・・・・・増幅器
、３・・・・・・交流結合コンデンサ、８．１２・・・
・・・比較器、１６・・・・・・シフト抵抗器、１７・
・・・・・空燃比調整装置。FIG. 1 is an electric circuit diagram showing an embodiment of an air-fuel ratio control device for an internal combustion engine according to the present invention, and FIG. 2 is a characteristic diagram of the electric circuit diagram of FIG. 1...Oxygen concentration detector, 2...Amplifier, 3...AC coupling capacitor, 8.12...
...Comparator, 16...Shift resistor, 17.
...Air-fuel ratio adjustment device.
Claims (1)
酸素濃度を検出する酸素濃度検出器の検出信号に基づい
て該内燃機関の空燃比を帰環制御・ する内燃機関
の空燃比制御装置において、前記酸素濃度検出器の検出
信号を２分し、該２分された信号の一方から上記検出信
号の変化分を検出する変化分検出回路、該変化分検出回
路の出力信号を所定の設定レベルと比較する第１の比較
器、前記酸素濃度検出器の２分された信号の他方からの
検出信号を所定の設定レベルと比較する第２の比較器、
該第２の比較器の出力端と前記第１の比較器の入力端と
の間に接続され、前記第２の比較器の出力に従って前記
変化分検出回路の出力信号の直流レベルあるいは前記第
１の比較器の設定レベルを変化させる抵抗器とを設けた
ことを特徴とする内燃機関の空燃比制御装置。Air-fuel ratio control for an internal combustion engine that performs return control of the air-fuel ratio of the internal combustion engine based on a detection signal of an oxygen concentration detector that is installed in the exhaust system of the internal combustion engine and detects the oxygen concentration in the exhaust gas of the internal combustion engine. In the apparatus, a change detection circuit divides the detection signal of the oxygen concentration detector into two and detects a change in the detection signal from one of the two divided signals, and the output signal of the change detection circuit is controlled to a predetermined value. a first comparator for comparing with a set level; a second comparator for comparing the detection signal from the other half of the signal of the oxygen concentration detector with a predetermined set level;
The second comparator is connected between the output terminal of the second comparator and the first comparator input terminal, and the DC level of the output signal of the change detection circuit or the first 1. An air-fuel ratio control device for an internal combustion engine, comprising: a resistor for changing a set level of a comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13408481U JPS5840534U (en) | 1981-09-09 | 1981-09-09 | Air-fuel ratio control device for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13408481U JPS5840534U (en) | 1981-09-09 | 1981-09-09 | Air-fuel ratio control device for internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5840534U true JPS5840534U (en) | 1983-03-17 |
| JPS626270Y2 JPS626270Y2 (en) | 1987-02-13 |
Family
ID=29927526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13408481U Granted JPS5840534U (en) | 1981-09-09 | 1981-09-09 | Air-fuel ratio control device for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5840534U (en) |
-
1981
- 1981-09-09 JP JP13408481U patent/JPS5840534U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS626270Y2 (en) | 1987-02-13 |
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