JPS6041543U - Air-fuel ratio control device for internal combustion engines - Google Patents
Air-fuel ratio control device for internal combustion enginesInfo
- Publication number
- JPS6041543U JPS6041543U JP13491983U JP13491983U JPS6041543U JP S6041543 U JPS6041543 U JP S6041543U JP 13491983 U JP13491983 U JP 13491983U JP 13491983 U JP13491983 U JP 13491983U JP S6041543 U JPS6041543 U JP S6041543U
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- control device
- internal combustion
- ratio control
- 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
- 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図は本考案の実施例を示す構成図、第２図は第１図
の装置中の制御回路を示すブロック図、第３図及び第４
図は第１図の装置の動作を示す図−である。
主要部分の符号の説明、２・・・・・・エアクリーナ、
３・・・・・・気化器、５・・・・・・絞り弁、６・・
・・・・ベンチュリ、８，９・・！・・・負圧検出孔、
１０・・・・・・排気マニホールド、１１・・・・・・
吸気２次空気通路、ｌｌａ、１１ｂ・・・・・・空気制
御通路、１２．１６・・・・・・吸気２次空気制御弁、
１５，１８・・・・・・電磁弁、１７，４２・・・・・
・負圧供給路、２０・・・・・・サージタンク、２１・
・・・・・一定員圧制御弁、２２・・・・・・ストレー
ジタンク、３１・・・・・・負圧制御部、５４・・・・
・・酸素濃度センサ、６０・・・・・・三元触媒、６２
・・・・・・ホットエア制御弁。FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing a control circuit in the device shown in FIG. 1, and FIGS.
The figure is a diagram showing the operation of the apparatus of FIG. 1. Explanation of symbols of main parts, 2...Air cleaner,
3... Carburizer, 5... Throttle valve, 6...
...Venturi, 8, 9...! ...Negative pressure detection hole,
10... Exhaust manifold, 11...
Intake secondary air passage, lla, 11b... Air control passage, 12.16... Intake secondary air control valve,
15, 18... Solenoid valve, 17, 42...
・Negative pressure supply path, 20... Surge tank, 21.
... Constant pressure control valve, 22 ... Storage tank, 31 ... Negative pressure control section, 54 ...
...Oxygen concentration sensor, 60...Three-way catalyst, 62
...Hot air control valve.
Claims (1)
いて供給混合気の空燃比をフィードバック制御する空燃
比制御装置であって、エンジン温度及び車速を各々検出
して該エンジン温度が所定温度以下にありかつ該車速が
所定速度以下にある場合には前記空燃比のフィードバッ
ク制御を停止して前記空燃比を理論空燃比以下に保持す
ることを特徴とする空燃比制御装置。An air-fuel ratio control device that detects the exhaust gas concentration of an in-vehicle internal combustion engine and feedback-controls the air-fuel ratio of a supplied air-fuel mixture based on the detection result, the device detecting each of engine temperature and vehicle speed to ensure that the engine temperature is below a predetermined temperature. An air-fuel ratio control device characterized in that when the vehicle speed is equal to or less than a predetermined speed, feedback control of the air-fuel ratio is stopped to maintain the air-fuel ratio at or below the stoichiometric air-fuel ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13491983U JPS6041543U (en) | 1983-08-30 | 1983-08-30 | Air-fuel ratio control device for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13491983U JPS6041543U (en) | 1983-08-30 | 1983-08-30 | Air-fuel ratio control device for internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6041543U true JPS6041543U (en) | 1985-03-23 |
Family
ID=30303860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13491983U Pending JPS6041543U (en) | 1983-08-30 | 1983-08-30 | Air-fuel ratio control device for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6041543U (en) |
-
1983
- 1983-08-30 JP JP13491983U patent/JPS6041543U/en active Pending
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