JPS57171057A - Atmospheric pressure compensating system in egr for diesel engine - Google Patents

Atmospheric pressure compensating system in egr for diesel engine

Info

Publication number
JPS57171057A
JPS57171057A JP56054269A JP5426981A JPS57171057A JP S57171057 A JPS57171057 A JP S57171057A JP 56054269 A JP56054269 A JP 56054269A JP 5426981 A JP5426981 A JP 5426981A JP S57171057 A JPS57171057 A JP S57171057A
Authority
JP
Japan
Prior art keywords
egr
atmospheric pressure
vacuum
compensating device
valve
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
Application number
JP56054269A
Other languages
Japanese (ja)
Inventor
Kiyonori Sekiguchi
Toshihiko Ito
Takeshi Tanaka
Hiromichi Yanagihara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Soken Inc
Original Assignee
Nippon Soken Inc
Toyota Motor Corp
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 Nippon Soken Inc, Toyota Motor Corp filed Critical Nippon Soken Inc
Priority to JP56054269A priority Critical patent/JPS57171057A/en
Publication of JPS57171057A publication Critical patent/JPS57171057A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/55—Systems for actuating EGR valves using vacuum actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

PURPOSE:To reduce the discharging amount of smoke by a method wherein an atmospheric pressure compensating device is interposed in a diaphragm operating chamber for an EGR valve to reduce the amount of DGR upon running at a high altitude. CONSTITUTION:An EGR control valve 1 is controlled by the atmospheirc pressure compensating device 60. The inner part of a metallic bellows 21 for the compensating device 60 is held at vacuum and thereby controlling a vacuum source 29 by the variation of the atmospheric pressure. When the engine is brought into a low pressure atmosphere upon running on the high altitude, the metallic bellows 21 is extended and a shaft 19 is pushed up. According to this action, the valve port effective area of a nozzle valve 15 becomes small and the set vacuum value of an upper chamber 61a becomes small, accordingly, the vacuum outputted from a pipe 20 is reduced. Therefore, the atmospheric pressure compensation is effected on the shaft 6 of an EGR pipe by the metallic bellows 21, thereby reducing the amount of the EGR.
JP56054269A 1981-04-13 1981-04-13 Atmospheric pressure compensating system in egr for diesel engine Pending JPS57171057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56054269A JPS57171057A (en) 1981-04-13 1981-04-13 Atmospheric pressure compensating system in egr for diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56054269A JPS57171057A (en) 1981-04-13 1981-04-13 Atmospheric pressure compensating system in egr for diesel engine

Publications (1)

Publication Number Publication Date
JPS57171057A true JPS57171057A (en) 1982-10-21

Family

ID=12965849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56054269A Pending JPS57171057A (en) 1981-04-13 1981-04-13 Atmospheric pressure compensating system in egr for diesel engine

Country Status (1)

Country Link
JP (1) JPS57171057A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829150U (en) * 1981-08-20 1983-02-25 トヨタ自動車株式会社 Diesel engine exhaust gas recirculation control device
JPS58163648U (en) * 1982-04-27 1983-10-31 日産自動車株式会社 Diesel engine exhaust recirculation control device
US4440139A (en) * 1981-07-20 1984-04-03 Nippondenso Co., Ltd. Vacuum control valve
US4445488A (en) * 1981-10-20 1984-05-01 Nippon Soken, Inc. Exhaust gas recirculation control for diesel engine
US4450824A (en) * 1982-06-15 1984-05-29 Toyota Jidosha Kabushiki Kaisha Exhaust gas recirculation control system with atmospheric pressure compensation valve
US4509492A (en) * 1982-04-06 1985-04-09 Diesel Kiki Co., Ltd. Diesel engine with EGR control

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4440139A (en) * 1981-07-20 1984-04-03 Nippondenso Co., Ltd. Vacuum control valve
JPS5829150U (en) * 1981-08-20 1983-02-25 トヨタ自動車株式会社 Diesel engine exhaust gas recirculation control device
JPS6146200Y2 (en) * 1981-08-20 1986-12-25
US4445488A (en) * 1981-10-20 1984-05-01 Nippon Soken, Inc. Exhaust gas recirculation control for diesel engine
US4509492A (en) * 1982-04-06 1985-04-09 Diesel Kiki Co., Ltd. Diesel engine with EGR control
JPS58163648U (en) * 1982-04-27 1983-10-31 日産自動車株式会社 Diesel engine exhaust recirculation control device
US4450824A (en) * 1982-06-15 1984-05-29 Toyota Jidosha Kabushiki Kaisha Exhaust gas recirculation control system with atmospheric pressure compensation valve

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