JPS58178452U - Diesel engine exhaust recirculation device - Google Patents
Diesel engine exhaust recirculation deviceInfo
- Publication number
- JPS58178452U JPS58178452U JP7722582U JP7722582U JPS58178452U JP S58178452 U JPS58178452 U JP S58178452U JP 7722582 U JP7722582 U JP 7722582U JP 7722582 U JP7722582 U JP 7722582U JP S58178452 U JPS58178452 U JP S58178452U
- Authority
- JP
- Japan
- Prior art keywords
- negative pressure
- exhaust recirculation
- diesel engine
- recirculation device
- engine exhaust
- 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 Circulating Devices (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図は従来の排気還流装置＆とおける排気還流制御弁
の断面図、第２図は同制御弁の制御信号負圧に対する弁
開度特性を示す線図、第３図は従来のＥＧＲ制御特性を
示す線図、第４図はこの考案−に係る排気還流装置の構
成説明図、第５図は同装置における排気還流制御弁の弁
体形状を示す断面図、第６図は同制御弁の制御信号負圧
に対する弁開度特性を示す線図、第７図はこの考案に係
る装置の場合の制御特性を示す線図である。
１・・・負圧室、２・・・大気室、３・・・ダイヤフラ
ム、５′・・・弁体、１１・・・排気還流（ＥＧＲ）制
御弁、１３・・・バキュームポンプ、１４・・・電磁三
方弁、１５・・・負圧通路、１６・・・オリフィス、１
７．１８・・・分岐通路、１９・・・負圧レギュレータ
、２０・・・大気室１、”２１・・・負圧室、２２・・
・ダイヤフラム、２３・・・大気導入ポート、２４・・
・スプリング、２５・・・電磁三方・、弁。Fig. 1 is a cross-sectional view of the exhaust recirculation control valve in a conventional exhaust recirculation system &, Fig. 2 is a diagram showing the valve opening characteristics of the control valve with respect to the control signal negative pressure, and Fig. 3 is a conventional EGR control 4 is a diagram showing the structure of the exhaust recirculation device according to this invention, FIG. 5 is a sectional view showing the shape of the valve body of the exhaust recirculation control valve in the same device, and FIG. 6 is the same control valve. FIG. 7 is a diagram showing the control characteristics of the device according to this invention. DESCRIPTION OF SYMBOLS 1... Negative pressure chamber, 2... Atmospheric chamber, 3... Diaphragm, 5'... Valve body, 11... Exhaust gas recirculation (EGR) control valve, 13... Vacuum pump, 14... ... Solenoid three-way valve, 15 ... Negative pressure passage, 16 ... Orifice, 1
7.18... Branch passage, 19... Negative pressure regulator, 20... Atmospheric chamber 1, "21... Negative pressure chamber, 22...
・Diaphragm, 23...Atmospheric introduction port, 24...
・Spring, 25...Electromagnetic three-way valve.
Claims (1)
路に、所定の中間負圧を形成するための負圧レギュレー
タを配設するとともに、この負圧レギュレータを切換制
御する電磁弁を設け、エンジ° ン運転条件により上
記中間負圧に応じて排気還流制御弁の中間開度を得るよ
うに構成したことを特、 徴とするディーゼルエンジ
ンの排気還流装置。, a negative pressure regulator for forming a predetermined intermediate negative pressure is disposed in the negative pressure passage that communicates the negative pressure chamber of the exhaust recirculation control valve with the negative pressure source, and an electromagnetic regulator is installed to switch and control the negative pressure regulator. An exhaust gas recirculation device for a diesel engine, characterized in that a valve is provided and an intermediate opening degree of the exhaust recirculation control valve is obtained depending on the intermediate negative pressure according to engine operating conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7722582U JPS58178452U (en) | 1982-05-26 | 1982-05-26 | Diesel engine exhaust recirculation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7722582U JPS58178452U (en) | 1982-05-26 | 1982-05-26 | Diesel engine exhaust recirculation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58178452U true JPS58178452U (en) | 1983-11-29 |
Family
ID=30086497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7722582U Pending JPS58178452U (en) | 1982-05-26 | 1982-05-26 | Diesel engine exhaust recirculation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58178452U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5716237A (en) * | 1980-07-04 | 1982-01-27 | Nissan Motor Co Ltd | Safety device for engine controller |
-
1982
- 1982-05-26 JP JP7722582U patent/JPS58178452U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5716237A (en) * | 1980-07-04 | 1982-01-27 | Nissan Motor Co Ltd | Safety device for engine controller |
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