JPS531718A - Exhaust emission control system for internal combustion engine - Google Patents

Exhaust emission control system for internal combustion engine

Info

Publication number
JPS531718A
JPS531718A JP7585576A JP7585576A JPS531718A JP S531718 A JPS531718 A JP S531718A JP 7585576 A JP7585576 A JP 7585576A JP 7585576 A JP7585576 A JP 7585576A JP S531718 A JPS531718 A JP S531718A
Authority
JP
Japan
Prior art keywords
control system
combustion engine
internal combustion
emission control
exhaust emission
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
JP7585576A
Other languages
Japanese (ja)
Inventor
Shinichi Nanun
Takeshi Nakamura
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP7585576A priority Critical patent/JPS531718A/en
Publication of JPS531718A publication Critical patent/JPS531718A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (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 remove NOx effectively as well as to improve the engine operation characteristics, by conducting the exhaust gas recirculation (EGR) at a higher EGR rate during the urban-running and by reducing the EGR rate to a lower level in the rural-running.
JP7585576A 1976-06-25 1976-06-25 Exhaust emission control system for internal combustion engine Pending JPS531718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7585576A JPS531718A (en) 1976-06-25 1976-06-25 Exhaust emission control system for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7585576A JPS531718A (en) 1976-06-25 1976-06-25 Exhaust emission control system for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS531718A true JPS531718A (en) 1978-01-10

Family

ID=13588248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7585576A Pending JPS531718A (en) 1976-06-25 1976-06-25 Exhaust emission control system for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS531718A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54133225A (en) * 1978-04-07 1979-10-16 Suzuki Motor Co Ltd Egr device for engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54133225A (en) * 1978-04-07 1979-10-16 Suzuki Motor Co Ltd Egr device for engine
JPS5744818B2 (en) * 1978-04-07 1982-09-24

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