JPS57157047A - Exhaust gas recirculation control system for diesel engine - Google Patents

Exhaust gas recirculation control system for diesel engine

Info

Publication number
JPS57157047A
JPS57157047A JP56040809A JP4080981A JPS57157047A JP S57157047 A JPS57157047 A JP S57157047A JP 56040809 A JP56040809 A JP 56040809A JP 4080981 A JP4080981 A JP 4080981A JP S57157047 A JPS57157047 A JP S57157047A
Authority
JP
Japan
Prior art keywords
vacuum
atmospheric pressure
reduced
exhaust gas
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
JP56040809A
Other languages
Japanese (ja)
Inventor
Masaaki Tanaka
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
Original Assignee
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP56040809A priority Critical patent/JPS57157047A/en
Publication of JPS57157047A publication Critical patent/JPS57157047A/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
    • 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
    • F02M2026/001—Arrangements; Control features; Details
    • F02M2026/004—EGR valve controlled by a temperature signal or an air/fuel ratio (lambda) signal

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 compensate an EGR rate in accordance with the variation of an atmospheric pressure at a high land by a method wherein a driving device, driving an exhaust gas recirculation control valve in accordance with a load and the atmospheric pressure detected by an engine load senser and an atmospheric pressure senser, is provided in this system. CONSTITUTION:When a cooling water temperature is higher than the predetermined value, the revolving number of the engine is higher than the predetermined value thereof, and a rapid acceleration is not effected, a vacuum generated by a vacuum pump 22 is introduced into a vacuum control valve 100 through a conduit 50, a temperature sensitive valve 51 and the conduit 52. At the high land, a bellows 67 is elongated and opens an atmosphere releasing port 65, therefore, the atmospheric pressure is introduced into a passage 64 and the vacuum taken out of the vacuum contol valve 100 is reduced in an atmosphere compensating valve 56. Since the reduced vacuum is introduced into a diaphragm chamber 20, the vacuum introduced into the diaphragm chamber 20 in the same lever opening degree is reduced in accompany with the reduction of the atmospheric pressure and the exhaust opening degree of the gas is recirculation control valve 13 is reduced. Accordingly, the EGR rate is lowered in accompany with the lowering of the atmospheric pressure and the exhaust gas is recirculated with a proper EGR rate when a car is running at the high land.
JP56040809A 1981-03-20 1981-03-20 Exhaust gas recirculation control system for diesel engine Pending JPS57157047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56040809A JPS57157047A (en) 1981-03-20 1981-03-20 Exhaust gas recirculation control system for diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56040809A JPS57157047A (en) 1981-03-20 1981-03-20 Exhaust gas recirculation control system for diesel engine

Publications (1)

Publication Number Publication Date
JPS57157047A true JPS57157047A (en) 1982-09-28

Family

ID=12590963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56040809A Pending JPS57157047A (en) 1981-03-20 1981-03-20 Exhaust gas recirculation control system for diesel engine

Country Status (1)

Country Link
JP (1) JPS57157047A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5867955U (en) * 1981-10-30 1983-05-09 いすゞ自動車株式会社 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
US4509492A (en) * 1982-04-06 1985-04-09 Diesel Kiki Co., Ltd. Diesel engine with EGR control
JPS60162047A (en) * 1984-02-02 1985-08-23 Nissan Motor Co Ltd Exhaust reflux controller for internal-combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240223A (en) * 1975-09-26 1977-03-29 Hitachi Ltd Exhaust gas reflux device
JPS5390519A (en) * 1977-01-18 1978-08-09 Nissan Diesel Motor Co Ltd Exhaust gas refluxing control device for diesel engine
JPS5438438A (en) * 1977-08-30 1979-03-23 Toyota Motor Corp Method and device for controlling engine exhaust gas recycle
JPS5566653A (en) * 1978-11-13 1980-05-20 Nippon Soken Inc Exhaust gas recycle device for diesel engine
JPS5765847A (en) * 1980-10-08 1982-04-21 Nissan Motor Co Ltd Exhaust reflux unit for diesel engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240223A (en) * 1975-09-26 1977-03-29 Hitachi Ltd Exhaust gas reflux device
JPS5390519A (en) * 1977-01-18 1978-08-09 Nissan Diesel Motor Co Ltd Exhaust gas refluxing control device for diesel engine
JPS5438438A (en) * 1977-08-30 1979-03-23 Toyota Motor Corp Method and device for controlling engine exhaust gas recycle
JPS5566653A (en) * 1978-11-13 1980-05-20 Nippon Soken Inc Exhaust gas recycle device for diesel engine
JPS5765847A (en) * 1980-10-08 1982-04-21 Nissan Motor Co Ltd Exhaust reflux unit for diesel engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5867955U (en) * 1981-10-30 1983-05-09 いすゞ自動車株式会社 Diesel engine exhaust recirculation control device
US4509492A (en) * 1982-04-06 1985-04-09 Diesel Kiki Co., Ltd. Diesel engine with EGR control
US4450824A (en) * 1982-06-15 1984-05-29 Toyota Jidosha Kabushiki Kaisha Exhaust gas recirculation control system with atmospheric pressure compensation valve
JPS60162047A (en) * 1984-02-02 1985-08-23 Nissan Motor Co Ltd Exhaust reflux controller for internal-combustion engine

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