JPS57129244A - Exhaust gas recirculating device - Google Patents

Exhaust gas recirculating device

Info

Publication number
JPS57129244A
JPS57129244A JP56014711A JP1471181A JPS57129244A JP S57129244 A JPS57129244 A JP S57129244A JP 56014711 A JP56014711 A JP 56014711A JP 1471181 A JP1471181 A JP 1471181A JP S57129244 A JPS57129244 A JP S57129244A
Authority
JP
Japan
Prior art keywords
pressure
valve
conduit
introduces
atmospheric air
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
JP56014711A
Other languages
Japanese (ja)
Inventor
Akira Nishimatsu
Tokio Kohama
Hisashi Kawai
Toshikazu Ina
Yasuhiko Ishida
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 JP56014711A priority Critical patent/JPS57129244A/en
Publication of JPS57129244A publication Critical patent/JPS57129244A/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
    • F02M26/56—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves
    • F02M26/57—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves using electronic means, e.g. electromagnetic valves
    • 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
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/48—EGR valve position sensors

Landscapes

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

Abstract

PURPOSE:To preferably reduce NOX without loss of the operability of an engine constantly by enabling the performance of an accurate EGR in response to the operating state of an engine. CONSTITUTION:A diaphragm 11 of an EGR control valve 10 partitions between a pressure chamber 14 and an atmospheric air chamber 15. A pressure correcting unit 30 controls the correcting pressure which is applied to the chamber 14 of the valve 10 in response to an electric signal. The unit 30 has the first solenoid valve 21 provided in a conduit 31 which introduces the pressure of a suction manifold, the second solenoid valve 22 provided in a conduit 33 which introduces atmospheric air, and the third solenoid valve 23 provided in a conduit 34 which introduces gradually atmospheric air. A control circuit 28 compares an EGR target value with the output of an opening sensor 25, thereby controlling the correcting pressure which is applied to the valve 10, receives the detection signals from a suction manifold negative pressure sensor 24, a rotating speed sensor 27 and an opening sensor 25, and controls the valves 21-23.
JP56014711A 1981-02-03 1981-02-03 Exhaust gas recirculating device Pending JPS57129244A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56014711A JPS57129244A (en) 1981-02-03 1981-02-03 Exhaust gas recirculating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56014711A JPS57129244A (en) 1981-02-03 1981-02-03 Exhaust gas recirculating device

Publications (1)

Publication Number Publication Date
JPS57129244A true JPS57129244A (en) 1982-08-11

Family

ID=11868734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56014711A Pending JPS57129244A (en) 1981-02-03 1981-02-03 Exhaust gas recirculating device

Country Status (1)

Country Link
JP (1) JPS57129244A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59145352A (en) * 1983-02-03 1984-08-20 Mitsubishi Electric Corp Egr control device in internal-combustion engine
JPS60249659A (en) * 1984-05-24 1985-12-10 Mazda Motor Corp Exhaust-gas recirculation controller for engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59145352A (en) * 1983-02-03 1984-08-20 Mitsubishi Electric Corp Egr control device in internal-combustion engine
JPH0255625B2 (en) * 1983-02-03 1990-11-27 Mitsubishi Electric Corp
JPS60249659A (en) * 1984-05-24 1985-12-10 Mazda Motor Corp Exhaust-gas recirculation controller for engine

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