JPS56124664A - Exhaust gas recirculating device for supercharged engine - Google Patents

Exhaust gas recirculating device for supercharged engine

Info

Publication number
JPS56124664A
JPS56124664A JP2708280A JP2708280A JPS56124664A JP S56124664 A JPS56124664 A JP S56124664A JP 2708280 A JP2708280 A JP 2708280A JP 2708280 A JP2708280 A JP 2708280A JP S56124664 A JPS56124664 A JP S56124664A
Authority
JP
Japan
Prior art keywords
passage
exhaust gas
turbine
load
exhaust
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
JP2708280A
Other languages
Japanese (ja)
Other versions
JPS5751539B2 (en
Inventor
Yasuyuki Morita
Toshimasu 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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Toyo Kogyo 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 Mazda Motor Corp, Toyo Kogyo Co Ltd filed Critical Mazda Motor Corp
Priority to JP2708280A priority Critical patent/JPS56124664A/en
Publication of JPS56124664A publication Critical patent/JPS56124664A/en
Publication of JPS5751539B2 publication Critical patent/JPS5751539B2/ja
Granted 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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/07—Mixed pressure loops, i.e. wherein recirculated exhaust gas is either taken out upstream of the turbine and reintroduced upstream of the compressor, or is taken out downstream of the turbine and reintroduced downstream of the compressor
    • 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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/68—Closing members; Valve seats; Flow passages
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way 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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/55—Systems for actuating EGR valves using vacuum actuators

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)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE: To effect appropriate recirculation of exhaust gas according to the load of an engine equipped with a supercharger, by employing such an arrangement that exhaust gas is recirculated from the downstream side of a turbine when the load is lower than a predetermined level and from the upstream side of the turbine when the load is higher than said predetermined level.
CONSTITUTION: A supercharger 3 including a turbine 4 and a blower 5 is disposed in intake and exhaust passages 1, 2 of an engine E. The intake and exhaust passages 1, 2 are communicated to each other via an exhaust gas recirculating passage 7, which is branched, by means of a valve, into a downstream side exhaust gas recirculating passage 9 communicated to a portion of the exhaust passage 2 located on the downstream side of the turbine 4 and an upstream side exhaust gas recirculating passage 11 communicated to a portion of the exhaust passage 2 located on the upstream side of the turbine 4. The valve 14 is opened and closed by a diaphragm means 15 in which pressures in the intake and the exhaust passages are acted. That is, the passage 7 is communicated to the downstream passage 9 when the load is lower than a predetermined level and to the upstream passage 11 when the load is higher than the predetermined level.
COPYRIGHT: (C)1981,JPO&Japio
JP2708280A 1980-03-03 1980-03-03 Exhaust gas recirculating device for supercharged engine Granted JPS56124664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2708280A JPS56124664A (en) 1980-03-03 1980-03-03 Exhaust gas recirculating device for supercharged engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2708280A JPS56124664A (en) 1980-03-03 1980-03-03 Exhaust gas recirculating device for supercharged engine

Publications (2)

Publication Number Publication Date
JPS56124664A true JPS56124664A (en) 1981-09-30
JPS5751539B2 JPS5751539B2 (en) 1982-11-02

Family

ID=12211148

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2708280A Granted JPS56124664A (en) 1980-03-03 1980-03-03 Exhaust gas recirculating device for supercharged engine

Country Status (1)

Country Link
JP (1) JPS56124664A (en)

Also Published As

Publication number Publication date
JPS5751539B2 (en) 1982-11-02

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