JPH0345460U - - Google Patents
Info
- Publication number
- JPH0345460U JPH0345460U JP10613089U JP10613089U JPH0345460U JP H0345460 U JPH0345460 U JP H0345460U JP 10613089 U JP10613089 U JP 10613089U JP 10613089 U JP10613089 U JP 10613089U JP H0345460 U JPH0345460 U JP H0345460U
- Authority
- JP
- Japan
- Prior art keywords
- recirculation
- exhaust
- passage
- flow rate
- exhaust gas
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 4
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案に係る内燃機関の排気還流装置
の構成図、第２図は同上装置の一実施例を示す概
略構成図、第３図は同上実施例の作用を説明する
フローチヤート、第４図は排気還流制御弁のバル
ブ開度マツプ、第５図は決定吸入空気流量マツプ
である。
１……機関本体、４……吸気通路、５……排気
通路、７……吸気絞り弁、８……空気流量センサ
、９……排気還流制御弁、１０……排気還流通路
、１２……負荷センサ、１３……回転数センサ、
１４……コントロールユニツト。
Fig. 1 is a block diagram of an exhaust gas recirculation system for an internal combustion engine according to the present invention, Fig. 2 is a schematic block diagram showing an embodiment of the same device, and Fig. 3 is a flowchart explaining the operation of the above embodiment. FIG. 4 is a map of the opening degree of the exhaust recirculation control valve, and FIG. 5 is a map of the determined intake air flow rate. 1... Engine body, 4... Intake passage, 5... Exhaust passage, 7... Intake throttle valve, 8... Air flow rate sensor, 9... Exhaust recirculation control valve, 10... Exhaust recirculation passage, 12... Load sensor, 13...rpm sensor,
14...Control unit.
Claims (1)
量を夫々検出する各検出手段と、排気通路と吸気
通路とを連通する排気還流通路と、排気還流通路
に介装した排気還流制御弁と、前記排気還流通路
接続部より上流側吸気通路に介装した吸気絞り弁
と、を備えると共に、 機関の負荷及び回転数の各検出手段から発せら
れる検出信号に基づいて前記排気還流制御弁を目
標排気還流率より低く設定した還流率に対応する
弁開度に駆動制御する排気還流制御手段と、前記
吸入空気流量検出手段の検出値に基づき前記排気
還流量制御手段で制御される還流率から前記目標
排気還流率となる吸入空気流量を決定する吸入空
気流量決定手段と、該吸入空気流量決定手段で決
定された吸入空気流量となるように吸気絞り弁を
駆動制御する吸気絞り弁制御手段と、を備えて構
成したことを特徴とする内燃機関の排気還流装置
。[Scope of Claim for Utility Model Registration] Detection means for detecting the load and rotation speed of the engine and the flow rate of intake air in the intake passage, an exhaust gas recirculation passage that communicates the exhaust passage and the intake passage, and an intervening device in the exhaust gas recirculation passage. an exhaust gas recirculation control valve, and an intake throttle valve interposed in an intake passage upstream of the exhaust gas recirculation passage connection portion, and the control valve is configured to detect the engine load and rotation speed based on the detection signals emitted from the engine load and rotation speed detection means. Exhaust recirculation control means for driving and controlling the exhaust recirculation control valve to a valve opening corresponding to a recirculation rate set lower than a target exhaust recirculation rate, and control by the exhaust recirculation amount control means based on the detected value of the intake air flow rate detection means. an intake air flow rate determining means for determining an intake air flow rate that corresponds to the target exhaust recirculation rate from the recirculation rate determined by the intake air flow rate; An exhaust gas recirculation device for an internal combustion engine, comprising a throttle valve control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989106130U JPH073003Y2 (en) | 1989-09-12 | 1989-09-12 | Exhaust gas recirculation system for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989106130U JPH073003Y2 (en) | 1989-09-12 | 1989-09-12 | Exhaust gas recirculation system for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0345460U true JPH0345460U (en) | 1991-04-26 |
| JPH073003Y2 JPH073003Y2 (en) | 1995-01-30 |
Family
ID=31654875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989106130U Expired - Lifetime JPH073003Y2 (en) | 1989-09-12 | 1989-09-12 | Exhaust gas recirculation system for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073003Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59105955A (en) * | 1982-12-08 | 1984-06-19 | Mazda Motor Corp | Exhaust-gas recirculating apparatus for diesel-engine |
| JPS61215426A (en) * | 1985-03-20 | 1986-09-25 | Isuzu Motors Ltd | Exhaust gas recirculation device for diesel engine |
-
1989
- 1989-09-12 JP JP1989106130U patent/JPH073003Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59105955A (en) * | 1982-12-08 | 1984-06-19 | Mazda Motor Corp | Exhaust-gas recirculating apparatus for diesel-engine |
| JPS61215426A (en) * | 1985-03-20 | 1986-09-25 | Isuzu Motors Ltd | Exhaust gas recirculation device for diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073003Y2 (en) | 1995-01-30 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |