JPS5560648A - Exhaust gas recirculating system for exhaust turbo- supercharged engine - Google Patents

Exhaust gas recirculating system for exhaust turbo- supercharged engine

Info

Publication number
JPS5560648A
JPS5560648A JP13405778A JP13405778A JPS5560648A JP S5560648 A JPS5560648 A JP S5560648A JP 13405778 A JP13405778 A JP 13405778A JP 13405778 A JP13405778 A JP 13405778A JP S5560648 A JPS5560648 A JP S5560648A
Authority
JP
Japan
Prior art keywords
exhaust
passage
engine
exhaust gas
pressure
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
JP13405778A
Other languages
Japanese (ja)
Other versions
JPS6056259B2 (en
Inventor
Akira Takamatsu
Norio Morimoto
Yasusada Masaki
Hiroshi Munetoki
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.)
Daihatsu Motor Co Ltd
Original Assignee
Daihatsu 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 Daihatsu Motor Co Ltd filed Critical Daihatsu Motor Co Ltd
Priority to JP53134057A priority Critical patent/JPS6056259B2/en
Publication of JPS5560648A publication Critical patent/JPS5560648A/en
Publication of JPS6056259B2 publication Critical patent/JPS6056259B2/en
Expired 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
    • F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
    • 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
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system

Landscapes

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

Abstract

PURPOSE: To provide a turbo-supercharged engine, in which a passage for recirculating exhaust gas in low- and medium-load region is also used as passage for feeding supercharged air to the exhaust system in high-load region and at the time of rapidly decelerating the engine, whereby it is enabled to simplify the entire structure of the engine.
CONSTITUTION: One end of exhaust gas recirculating passage 17 is connected to a port 18 which is located slightly upstreams of the position of throttle valve 10 occupied by the same when it is closed, and a check valve 24 is provided in the passage 17. Since negative pressure at port 18 is lower than the exhaust pressure in exhaust passage 16 when engine load is low and medium, exhaust gas is recirculated to the intake system via orifice 25. On the other hand, since supercharging pressure becomes high in high-load region, a portion of supercharged air flows into exhaust passage 16 via orifice 25 and serves as secondary air. Further, at the time of rapidly decelerating the engine, supercharging pressure is increased rapidly although amount of exhaust gas is decreased considerably. By the supercharing pressure thus raised, check valve 24 is opened so that supercharged air flows into exhaust passage 16. Therefore, it is prevented that supercharging pressure is increased extraordinarily.
COPYRIGHT: (C)1980,JPO&Japio
JP53134057A 1978-10-30 1978-10-30 Exhaust gas recirculation device for exhaust turbocharged engines Expired JPS6056259B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53134057A JPS6056259B2 (en) 1978-10-30 1978-10-30 Exhaust gas recirculation device for exhaust turbocharged engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53134057A JPS6056259B2 (en) 1978-10-30 1978-10-30 Exhaust gas recirculation device for exhaust turbocharged engines

Publications (2)

Publication Number Publication Date
JPS5560648A true JPS5560648A (en) 1980-05-07
JPS6056259B2 JPS6056259B2 (en) 1985-12-09

Family

ID=15119349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53134057A Expired JPS6056259B2 (en) 1978-10-30 1978-10-30 Exhaust gas recirculation device for exhaust turbocharged engines

Country Status (1)

Country Link
JP (1) JPS6056259B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6344143U (en) * 1986-09-06 1988-03-24
JPS6344142U (en) * 1986-09-06 1988-03-24

Also Published As

Publication number Publication date
JPS6056259B2 (en) 1985-12-09

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