JPS58186154U - Engine exhaust recirculation device - Google Patents

Engine exhaust recirculation device

Info

Publication number
JPS58186154U
JPS58186154U JP8301782U JP8301782U JPS58186154U JP S58186154 U JPS58186154 U JP S58186154U JP 8301782 U JP8301782 U JP 8301782U JP 8301782 U JP8301782 U JP 8301782U JP S58186154 U JPS58186154 U JP S58186154U
Authority
JP
Japan
Prior art keywords
pressure
control valve
valve
chamber
signal port
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
Application number
JP8301782U
Other languages
Japanese (ja)
Other versions
JPS6319585Y2 (en
Inventor
西田　俊章
Original Assignee
マツダ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by マツダ株式会社 filed Critical マツダ株式会社
Priority to JP8301782U priority Critical patent/JPS58186154U/en
Publication of JPS58186154U publication Critical patent/JPS58186154U/en
Application granted granted Critical
Publication of JPS6319585Y2 publication Critical patent/JPS6319585Y2/ja
Granted legal-status Critical Current

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  • 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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本箸案の一実施例を示す排気還流装置の概略図
、第２図は排気還流率の変化を示す図表である。□ ２・・・吸気通路、・３・・・排気通路、４・・・絞り
弁、５・・・排気還流通路、６・・・還流制御弁、１７
・・・定圧室、１８・・・調整弁、２８・・・第１制御
弁、２９・・・第２制御弁。FIG. 1 is a schematic diagram of an exhaust gas recirculation device showing an embodiment of the present chopsticks, and FIG. 2 is a chart showing changes in the exhaust gas recirculation rate. □ 2... Intake passage, 3... Exhaust passage, 4... Throttle valve, 5... Exhaust recirculation passage, 6... Reflux control valve, 17
... constant pressure chamber, 18 ... adjustment valve, 28 ... first control valve, 29 ... second control valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 排気還流通路に設けられ、吸気負圧が導かれるダイヤフ
ラム室を有し、かつ前記ダイヤフラム室に作用する負圧
の増大に応じて開弁量が増大するようになった弁機構を
有し、該弁機構に隣接して定圧室が設けられた還流制御
弁と、前記還流制御弁のダイヤフラム室への負圧通路を
前記定圧室の圧力に応じて大気に開放する調整弁とを有
し、前記調整弁には前記定圧室の圧力が導かれる第１室
とエンジン絞り井原上流に位置し該絞り弁が開いたとき
その下流側になるように形成された第１信号ポートの圧
力が導かれる第２室とが圧力応動部材によって形成され
、前記圧力応動部材の動きにより前記負圧通路の大気へ
の開放が制御されるようになったエンジンの排気還流装
置において、吸気負圧が設定値より弱いとき前記調整弁
の第２室を大気に開放する第１制御弁と、前記第１信号
ポートより上流側に位置し該第１信号ポートより遅れて
絞り弁の下流側に入るように形成された第２信号ポート
からの圧力により作動して該第２信号ポートに負圧が発
生したとき前記第１制御弁の大気開放通路を閉じる第２
制御弁とが設けられたことを特徴とするエンジンの排気
還流装置。It has a diaphragm chamber provided in the exhaust gas recirculation passage to which intake negative pressure is introduced, and a valve mechanism whose opening amount increases in accordance with an increase in the negative pressure acting on the diaphragm chamber, a reflux control valve provided with a constant pressure chamber adjacent to a valve mechanism; and a regulating valve that opens a negative pressure passage to a diaphragm chamber of the reflux control valve to the atmosphere according to the pressure of the constant pressure chamber, The regulating valve includes a first chamber to which the pressure of the constant pressure chamber is guided, and a first signal port to which the pressure of the first signal port, which is located upstream of the engine throttle valve and is formed to be on the downstream side when the throttle valve opens, is guided. In an exhaust gas recirculation system for an engine, in which two chambers are formed by a pressure responsive member, and opening of the negative pressure passage to the atmosphere is controlled by movement of the pressure responsive member, the intake negative pressure is weaker than a set value. a first control valve that opens a second chamber of the regulating valve to the atmosphere; and a first control valve located upstream of the first signal port and configured to enter the throttle valve downstream after the first signal port. A second control valve that is actuated by pressure from a second signal port and closes the atmosphere opening passage of the first control valve when negative pressure is generated in the second signal port.
An exhaust gas recirculation device for an engine, characterized in that it is provided with a control valve.
JP8301782U 1982-06-04 1982-06-04 Engine exhaust recirculation device Granted JPS58186154U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8301782U JPS58186154U (en) 1982-06-04 1982-06-04 Engine exhaust recirculation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8301782U JPS58186154U (en) 1982-06-04 1982-06-04 Engine exhaust recirculation device

Publications (2)

Publication Number Publication Date
JPS58186154U true JPS58186154U (en) 1983-12-10
JPS6319585Y2 JPS6319585Y2 (en) 1988-06-01

Family

ID=30092045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8301782U Granted JPS58186154U (en) 1982-06-04 1982-06-04 Engine exhaust recirculation device

Country Status (1)

Country Link
JP (1) JPS58186154U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321330A (en) * 1976-08-12 1978-02-27 Mitsubishi Motors Corp Air-intake control device in internal combustion engine for vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5321330A (en) * 1976-08-12 1978-02-27 Mitsubishi Motors Corp Air-intake control device in internal combustion engine for vehicle

Also Published As

Publication number Publication date
JPS6319585Y2 (en) 1988-06-01

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