JPS59177756U - Air fuel ratio control device - Google Patents
Air fuel ratio control deviceInfo
- Publication number
- JPS59177756U JPS59177756U JP5322284U JP5322284U JPS59177756U JP S59177756 U JPS59177756 U JP S59177756U JP 5322284 U JP5322284 U JP 5322284U JP 5322284 U JP5322284 U JP 5322284U JP S59177756 U JPS59177756 U JP S59177756U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- air
- fuel ratio
- control device
- fuel
- 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
- 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ＮＯｘ、ＨＣ，ＣＯの転化率特性を示す説明図
、第２図はフィードバック空燃比制御システムの略示的
説明図、第３図は本考案装置の略示的説明図、第４〜第
６図は各異なる実施例の略示的説明図である。
１・・・排気通路、５・・・流量制御用アクチュエータ
、２・・・三元触媒装置、３・・・排気センサ、４・・
・燃料供給装置、６・・・電子制御装置、１０・・・運
転状態検出手段、１１・・・二次空気供給手段、ｌｌａ
・・・二次空気供給装置、１２・・・二次空気供給通路
、１３゜１５．１６・・・開閉弁。Fig. 1 is an explanatory diagram showing the conversion rate characteristics of NOx, HC, and CO; Fig. 2 is a schematic explanatory diagram of the feedback air-fuel ratio control system; Fig. 3 is a schematic explanatory diagram of the device of the present invention; -FIGS. 6A and 6B are schematic illustrations of different embodiments. DESCRIPTION OF SYMBOLS 1... Exhaust passage, 5... Flow control actuator, 2... Three-way catalyst device, 3... Exhaust sensor, 4...
- Fuel supply device, 6... Electronic control device, 10... Operating state detection means, 11... Secondary air supply means, lla
...Secondary air supply device, 12...Secondary air supply passage, 13°15.16...Opening/closing valve.
Claims (1)
気系燃料供給装置の燃料通路もしくは空気導入路に流量
制御用アクチュエータを介装すると共に、排気系の三元
触媒装置前流に排気成分濃度を検出する排気センサを設
け、該排気センサの−検出信号に基づき電子制御装置を
介して前記アクチュエータを作動させ、吸入混合気の空
燃比を目標値にフィードバック制御するように構成する
一方、前記排気センサ前流に二次空気供給通路を接続し
、該通路に開閉弁を設けると共に、吸気系絞り弁の小開
度状態を検出する手段を設け、絞り弁小開度時に前記開
閉弁を開作動させることを特徴とする空燃比制御装置。In an internal combustion engine equipped with a three-way catalyst device in the exhaust system, a flow control actuator is installed in the fuel passage or air introduction path of the intake system fuel supply device, and the exhaust component concentration is controlled upstream of the three-way catalyst device in the exhaust system. An exhaust sensor is provided to detect the exhaust gas, and the actuator is actuated via an electronic control device based on the detection signal of the exhaust sensor to feedback control the air-fuel ratio of the intake air-fuel mixture to a target value. A secondary air supply passage is connected upstream of the sensor, an on-off valve is provided in the passage, and a means for detecting a small opening state of the intake system throttle valve is provided, and the on-off valve is opened when the throttle valve is opened at a small opening. An air-fuel ratio control device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5322284U JPS59177756U (en) | 1984-04-11 | 1984-04-11 | Air fuel ratio control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5322284U JPS59177756U (en) | 1984-04-11 | 1984-04-11 | Air fuel ratio control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59177756U true JPS59177756U (en) | 1984-11-28 |
| JPS6121557Y2 JPS6121557Y2 (en) | 1986-06-27 |
Family
ID=30183570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5322284U Granted JPS59177756U (en) | 1984-04-11 | 1984-04-11 | Air fuel ratio control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59177756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009156222A (en) * | 2007-12-27 | 2009-07-16 | Yamaha Motor Co Ltd | Secondary air supply system and vehicle |
-
1984
- 1984-04-11 JP JP5322284U patent/JPS59177756U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009156222A (en) * | 2007-12-27 | 2009-07-16 | Yamaha Motor Co Ltd | Secondary air supply system and vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6121557Y2 (en) | 1986-06-27 |
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