JPS644848U - - Google Patents
Info
- Publication number
- JPS644848U JPS644848U JP9957787U JP9957787U JPS644848U JP S644848 U JPS644848 U JP S644848U JP 9957787 U JP9957787 U JP 9957787U JP 9957787 U JP9957787 U JP 9957787U JP S644848 U JPS644848 U JP S644848U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- passage
- differential pressure
- control valve
- operating range
- 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
- 239000003054 catalyst Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図はこの考案に係る排気還流装置の一実施
例を示す構成説明図、第２図はこの実施例におけ
る排気還流制御弁の開作動領域を示す特性図、第
３図は従来の排気還流装置の一例を示す構成説明
図、第４図は従来の異なる例を示す構成説明図で
ある。
１……エンジン、２……吸気通路、４……排気
通路、６……排気還流通路、７……排気還流制御
弁、８……触媒付トラツプ、９……差圧センサ、
１０……制御回路、１１……回転速度センサ、１
２……負荷センサ。
Fig. 1 is a configuration explanatory diagram showing an embodiment of the exhaust recirculation device according to this invention, Fig. 2 is a characteristic diagram showing the opening operation range of the exhaust recirculation control valve in this embodiment, and Fig. 3 is a conventional exhaust recirculation system. FIG. 4 is a configuration explanatory diagram showing an example of the device, and FIG. 4 is a configuration explanatory diagram showing a different conventional example. DESCRIPTION OF SYMBOLS 1... Engine, 2... Intake passage, 4... Exhaust passage, 6... Exhaust recirculation passage, 7... Exhaust recirculation control valve, 8... Trap with catalyst, 9... Differential pressure sensor,
10...Control circuit, 11...Rotation speed sensor, 1
2...Load sensor.
Claims (1)
連通するとともに、所定運転領域で開作動する排
気還流制御弁が介装された排気還流通路と、上記
排気通路内に、上記排気還流通路の端部開口を覆
うように位置し、かつ上記排気通路の通路断面積
の一部のみを占めるように配設された触媒付トラ
ツプと、上記排気通路と上記排気還流通路との差
圧を検出する差圧検出手段と、この差圧が所定値
以上のときに、上記排気還流制御弁が開作動する
運転領域を拡大補正する補正手段とを備えてなる
デイーゼルエンジンの排気還流装置。 An exhaust recirculation passage that connects the exhaust passage and intake passage of a diesel engine and is equipped with an exhaust recirculation control valve that opens in a predetermined operating range; a trap with a catalyst positioned to cover and occupy only a portion of the cross-sectional area of the exhaust passage; and a differential pressure detection means for detecting a differential pressure between the exhaust passage and the exhaust gas recirculation passage. and a correction means for expanding and correcting the operating range in which the exhaust gas recirculation control valve opens when the differential pressure is equal to or higher than a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957787U JPS644848U (en) | 1987-06-29 | 1987-06-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957787U JPS644848U (en) | 1987-06-29 | 1987-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS644848U true JPS644848U (en) | 1989-01-12 |
Family
ID=31326864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9957787U Pending JPS644848U (en) | 1987-06-29 | 1987-06-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS644848U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012149558A (en) * | 2011-01-18 | 2012-08-09 | Toyota Motor Corp | Exhaust gas recirculation system of internal combustion engine |
| JP2012237236A (en) * | 2011-05-11 | 2012-12-06 | Toyota Motor Corp | Exhaust gas recirculation system of internal combustion engine |
-
1987
- 1987-06-29 JP JP9957787U patent/JPS644848U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012149558A (en) * | 2011-01-18 | 2012-08-09 | Toyota Motor Corp | Exhaust gas recirculation system of internal combustion engine |
| JP2012237236A (en) * | 2011-05-11 | 2012-12-06 | Toyota Motor Corp | Exhaust gas recirculation system of internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01142558U (en) | ||
| JPH03122258U (en) | ||
| JPH0243447U (en) | ||
| JPS61144250U (en) | ||
| JPS61181839U (en) | ||
| JPS62150537U (en) | ||
| JPS62162363U (en) | ||
| JPS63100647U (en) | ||
| JPS6157136U (en) | ||
| JPS63162962U (en) | ||
| JPS62185863U (en) | ||
| JPS6321718U (en) | ||
| JPS60164661U (en) | Diesel engine exhaust recirculation control device | |
| JPS62183013U (en) | ||
| JPS60164662U (en) | Diesel engine exhaust recirculation control device | |
| JPS6351144U (en) | ||
| JPS63130660U (en) | ||
| JPH0195576U (en) | ||
| JPS62757U (en) | ||
| JPS62183014U (en) | ||
| JPS63121754U (en) | ||
| JPS6432455U (en) | ||
| JPS63123744U (en) | ||
| JPH0352363U (en) | ||
| JPS63125160U (en) |