JPS59116544U - Air-fuel ratio control device for internal combustion engines - Google Patents
Air-fuel ratio control device for internal combustion enginesInfo
- Publication number
- JPS59116544U JPS59116544U JP1004183U JP1004183U JPS59116544U JP S59116544 U JPS59116544 U JP S59116544U JP 1004183 U JP1004183 U JP 1004183U JP 1004183 U JP1004183 U JP 1004183U JP S59116544 U JPS59116544 U JP S59116544U
- Authority
- JP
- Japan
- Prior art keywords
- air
- internal combustion
- fuel ratio
- output
- control device
- 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
- Exhaust Gas After Treatment (AREA)
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案に係る内燃機関あ空燃比制御装置を示す
概要図、第２図は第１図の制御回路の詳細な回路図であ
る。
１：機関本体、２：キャブレタ、１０：制御回路、１２
：混合気調整用電磁弁、１３：負圧スイッチ、１５：２
次空気調整用電磁弁、１６：０゜センサ、１７：三元触
媒コンバータ、１８：排気温センサ、１０２：比較回路
、１０３：第１の積分回路、１０４：第２の積分回路、
１０９，１１０：アナログスイッチ、・１０３１．１０
３２：積分定数決定回路。FIG. 1 is a schematic diagram showing an air-fuel ratio control device for an internal combustion engine according to the present invention, and FIG. 2 is a detailed circuit diagram of the control circuit shown in FIG. 1. 1: Engine body, 2: Carburetor, 10: Control circuit, 12
: Solenoid valve for mixture adjustment, 13: Negative pressure switch, 15:2
Next air adjustment solenoid valve, 16: 0° sensor, 17: three-way catalytic converter, 18: exhaust temperature sensor, 102: comparison circuit, 103: first integral circuit, 104: second integral circuit,
109,110: Analog switch, ・1031.10
32: Integral constant determining circuit.
Claims (1)
めの濃度センサと、該濃度センサの出力を所定値と比較
するための比較回路と、該比較回路の出力に応じて積分
方向が異なる第１、第２の積分回路と、該第１の積分回
路の出力に応じて前記機関の吸気系に供給される混合気
の空燃比をフィードバック制御するための吸気系フィー
ドバック制御手段と、前記第２の積分回路の出力に応じ
て前記機関の排気系に供給される２次空気量をフィード
バック制御するための排気系フィードバック制御手段と
、を具備し、前記機関の所定運転条件に応じて前記排気
系フィードバック制御手段を停止させるようにした内燃
機関の空燃比制御装置において、前記第１の積分回路が
、２つの積分定数決定回路と、前記所定運転条件：ぐ応
じて前記２つの積分定数決定回路のうち１つを選択する
ための選択回路とを具備することを特徴とする内燃機関
の空燃比制御装置。 ２ 前記所定運転条件が、前記機関の吸気圧および排気
温度である実用新案登録請求の範囲第１項に記載の内燃
機関の空燃比制御装置。[Claims for Utility Model Registration] 1. A concentration sensor for detecting the concentration of a specific component in the exhaust gas of an internal combustion engine, a comparison circuit for comparing the output of the concentration sensor with a predetermined value, and the output of the comparison circuit. first and second integrating circuits having different integration directions according to the output of the first integrating circuit; and an intake system for feedback controlling the air-fuel ratio of the air-fuel mixture supplied to the intake system of the engine according to the output of the first integrating circuit. feedback control means; and exhaust system feedback control means for feedback controlling the amount of secondary air supplied to the exhaust system of the engine according to the output of the second integral circuit, In the air-fuel ratio control device for an internal combustion engine, the exhaust system feedback control means is stopped in accordance with operating conditions, wherein the first integrating circuit includes two integral constant determining circuits and a control unit configured to stop the exhaust system feedback control means in accordance with the predetermined operating conditions. An air-fuel ratio control device for an internal combustion engine, comprising a selection circuit for selecting one of the two integral constant determining circuits. 2. The air-fuel ratio control device for an internal combustion engine according to claim 1, wherein the predetermined operating conditions are an intake pressure and an exhaust temperature of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1004183U JPS59116544U (en) | 1983-01-28 | 1983-01-28 | Air-fuel ratio control device for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1004183U JPS59116544U (en) | 1983-01-28 | 1983-01-28 | Air-fuel ratio control device for internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59116544U true JPS59116544U (en) | 1984-08-06 |
Family
ID=30141492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1004183U Pending JPS59116544U (en) | 1983-01-28 | 1983-01-28 | Air-fuel ratio control device for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59116544U (en) |
-
1983
- 1983-01-28 JP JP1004183U patent/JPS59116544U/en active Pending
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