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SE0203837D0 - Exhaust gas return device, internal combustion engine and process - Google Patents

Exhaust gas return device, internal combustion engine and process

Info

Publication number
SE0203837D0
SE0203837D0 SE0203837A SE0203837A SE0203837D0 SE 0203837 D0 SE0203837 D0 SE 0203837D0 SE 0203837 A SE0203837 A SE 0203837A SE 0203837 A SE0203837 A SE 0203837A SE 0203837 D0 SE0203837 D0 SE 0203837D0
Authority
SE
Sweden
Prior art keywords
internal combustion
exhaust gas
combustion engine
venturi
return device
Prior art date
Application number
SE0203837A
Other languages
Swedish (sv)
Other versions
SE0203837L (en
SE524515C2 (en
Inventor
Magnus Nilsson
Richard Jansson
Original Assignee
Scania Cv Ab
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 Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE0203837A priority Critical patent/SE524515C2/en
Publication of SE0203837D0 publication Critical patent/SE0203837D0/en
Publication of SE0203837L publication Critical patent/SE0203837L/en
Publication of SE524515C2 publication Critical patent/SE524515C2/en

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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/39—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with two or more EGR valves disposed in series
    • F02M25/0713—
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system
    • 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient 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
    • F02M26/02—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

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

Abstract

The arrangement for exhaust gas feedback in an internal combustion engine incorporates an adjustable venturi device (9) for feeding exhaust gases into engine inlet conduit (2). The venturi device includes a fixed venturi housing (8) and a movable venturi insert (10), and, for its adjustment, a pneumatic cylinder (21) activatable in one direction by compressed air and in another direction by a return spring. The pneumatic cylinder is formed so that it can bring the venturi insert to both a distinct intermediate position (10) and to its end position. The invention also includes a suitable internal combustion engine and a method for exhaust gas feedback.
SE0203837A 2002-12-23 2002-12-23 Arrangement for exhaust gas feedback in internal combustion engine incorporates adjustable venturi device for feeding exhaust gases into engine inlet conduit SE524515C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE0203837A SE524515C2 (en) 2002-12-23 2002-12-23 Arrangement for exhaust gas feedback in internal combustion engine incorporates adjustable venturi device for feeding exhaust gases into engine inlet conduit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0203837A SE524515C2 (en) 2002-12-23 2002-12-23 Arrangement for exhaust gas feedback in internal combustion engine incorporates adjustable venturi device for feeding exhaust gases into engine inlet conduit

Publications (3)

Publication Number Publication Date
SE0203837D0 true SE0203837D0 (en) 2002-12-23
SE0203837L SE0203837L (en) 2004-06-24
SE524515C2 SE524515C2 (en) 2004-08-17

Family

ID=20289986

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0203837A SE524515C2 (en) 2002-12-23 2002-12-23 Arrangement for exhaust gas feedback in internal combustion engine incorporates adjustable venturi device for feeding exhaust gases into engine inlet conduit

Country Status (1)

Country Link
SE (1) SE524515C2 (en)

Also Published As

Publication number Publication date
SE0203837L (en) 2004-06-24
SE524515C2 (en) 2004-08-17

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Legal Events

Date Code Title Description
NUG Patent has lapsed