EP3426901A1 - Dispositif d'alimentation pour l'introduction de gaz d'échappement recyclés - Google Patents

Dispositif d'alimentation pour l'introduction de gaz d'échappement recyclés

Info

Publication number
EP3426901A1
EP3426901A1 EP17709353.1A EP17709353A EP3426901A1 EP 3426901 A1 EP3426901 A1 EP 3426901A1 EP 17709353 A EP17709353 A EP 17709353A EP 3426901 A1 EP3426901 A1 EP 3426901A1
Authority
EP
European Patent Office
Prior art keywords
fresh air
exhaust gas
quick
air duct
internal combustion
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
EP17709353.1A
Other languages
German (de)
English (en)
Other versions
EP3426901B1 (fr
Inventor
Hermann Braun
Thomas Rode
Christian-Paul Stelzer
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.)
Rolls Royce Solutions GmbH
Original Assignee
MTU Friedrichshafen GmbH
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 MTU Friedrichshafen GmbH filed Critical MTU Friedrichshafen GmbH
Publication of EP3426901A1 publication Critical patent/EP3426901A1/fr
Application granted granted Critical
Publication of EP3426901B1 publication Critical patent/EP3426901B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/12—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit
    • F02D9/14—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having slidably-mounted valve members; having valve members movable longitudinally of conduit the members being slidable transversely of conduit
    • 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

Definitions

  • the invention relates to a supply arrangement for recirculating exhaust gas in the
  • Quick-release flaps is equipped, which are provided for quick shutdown of the internal combustion engine in emergency situations. They are located in the fresh air duct of the internal combustion engine and close it, thereby achieving an immediate interruption of the fresh air supply necessary for combustion.
  • the object of the present invention is to minimize the maintenance requirements.
  • the object is achieved in that in the fresh air duct to interrupt the supply of fresh air in front of a cylinder head of the Brenntoaftmaschine a quick-closing flap is arranged.
  • the outlet opening of the exhaust gas recirculation is centrally in the fresh air duct and in the flow direction of the fresh air with minimal gap formation in front of the
  • An advantage of the arrangement according to the invention is that the mixing of exhaust gas and fresh air flow in the direction of flow takes place only behind the quick-closing flap.
  • a very homogeneous mixing of fresh air and recirculated exhaust gas is effected by the inventive arrangement of the exhaust gas recirculation.
  • the exhaust gas stream introduced into the fresh air stream concentrically spreads in the fresh air duct starting from the outlet opening as a turbulent flow until it reaches the wall of the exhaust gas stream
  • Fresh air channel depends on the Reynolds numbers of the two streams.
  • the immediate arrangement of the outlet opening of the exhaust gas supply pipe in front of the flap plate of the quick-closing flap ensures that there is no deposition of the soot particles contained in the exhaust gas in the region of the flap mechanism. As a result, the constant operational readiness of the flap mechanism is ensured, whereby the
  • Fig. 1 is a fresh air duct with quick-closing flap and executed as a pipe bend
  • a fresh air duct 1 of an internal combustion engine is shown. Viewed in the drawing direction, the fresh air required for combustion flows from top to bottom in the
  • Fresh air duct 1 reference numeral ON.
  • the fresh air duct 1 is a
  • Quick-action flap 4 which serves to interrupt the flow of fresh air, to allow a quick shutdown of the internal combustion engine.
  • the quick-action flap 4 comprises a quick-release flap mechanism 7 and a flap plate 6. The closing of the
  • Quick release 4 is located centrally in the fresh air duct 1, the outlet opening 2 of the exhaust gas recirculation 3. Immediately according to the invention is to be understood that the outlet opening 2 of the exhaust gas recirculation 3 with minimal gap formation in front of the flap plate 6 of
  • Quick closure flap 4 is arranged so that the outlet opening 2 and the flap plate 6 just do not touch when the quick-closing flap 4 is closed.
  • the central arrangement of the outlet opening 2 in the fresh air duct 1 is necessary to achieve on the one hand the most homogeneous possible mixing of the two gases and on the other hand to make the distance to reach the inner wall of the soot particles contained in the exhaust gas as large as possible.
  • the exhaust gas recirculation 3 is designed as a pipe bend 5. With the help of the exhaust gas recirculation 3, the fresh air is supplied to a part of the exhaust gas formed during combustion. Starting from the outlet opening 2 of the exhaust gas recirculation 3, the exhaust gas flowing into the fresh air propagates concentrically under turbulent flow conditions. The soot particles contained in the exhaust gas thus reach the inner wall of the fresh air duct 1 in the direction of flow only far behind
  • Quick-closing flap 4 A deposit of soot particles in the area of the quick-closing flap 4 is thereby effectively prevented.
  • the flow of the exhaust gas in the fresh air duct 1 is shown in FIG. 1 starting from the exit point 2 of the exhaust gas recirculation 3 as a dashed current thread 8 in order to represent the flow direction in the fresh air duct. After complete mixing of exhaust gas and fresh air, the gas mixture leaves the fresh air duct 1, as viewed in the direction of the drawing, to the right towards the combustion chamber, reference symbol AUS. LIST OF REFERENCE NUMBERS

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)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un dispositif d'alimentation conçu pour l'introduction de gaz d'échappement recyclés dans le conduit d'air frais (1) d'un moteur à combustion interne. L'invention est caractérisée en ce qu'un clapet à fermeture rapide (4) est disposé dans le conduit d'air frais (1) pour interrompre l'apport d'air frais devant une culasse du moteur à combustion interne, et en ce que l'ouverture de sortie (2) du recyclage de gaz d'échappement (3) est disposée de manière centrale dans le conduit d'air frais (1) et dans la direction d'écoulement de l'air frais en formant un interstice minimal devant le clapet à fermeture rapide (4).
EP17709353.1A 2016-03-11 2017-03-06 Dispositif d'alimentation pour l'introduction de gaz d'échappement recyclés Active EP3426901B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016003003.8A DE102016003003B4 (de) 2016-03-11 2016-03-11 Zuführungsanordnung zur Einleitung von rückgeführtem Abgas
PCT/EP2017/000295 WO2017153042A1 (fr) 2016-03-11 2017-03-06 Dispositif d'alimentation pour l'introduction de gaz d'échappement recyclés

Publications (2)

Publication Number Publication Date
EP3426901A1 true EP3426901A1 (fr) 2019-01-16
EP3426901B1 EP3426901B1 (fr) 2019-12-18

Family

ID=58261610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17709353.1A Active EP3426901B1 (fr) 2016-03-11 2017-03-06 Dispositif d'alimentation pour l'introduction de gaz d'échappement recyclés

Country Status (6)

Country Link
US (1) US10495034B2 (fr)
EP (1) EP3426901B1 (fr)
CN (1) CN109072785B (fr)
DE (1) DE102016003003B4 (fr)
RU (1) RU2700845C1 (fr)
WO (1) WO2017153042A1 (fr)

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422418A (en) * 1981-08-20 1983-12-27 Condor Engineering & Manufacturing, Inc. Emergency air shutdown system for a diesel engine
JPH09317579A (ja) 1996-05-31 1997-12-09 Suzuki Motor Corp 内燃機関の吸気装置
DE19842842A1 (de) * 1998-09-18 2000-03-23 Miag Fahrzeugbau Gmbh Verbrennungsmotor
DE19933030A1 (de) * 1999-07-15 2001-01-18 Mann & Hummel Filter Fluideinleitung für ein heißes Fluid in einer Hohlraumstruktur
CA2299929C (fr) * 2000-03-03 2004-03-02 Jkkb Holdings Corp. Vannes de coupure de moteur
SE522310C2 (sv) * 2001-03-02 2004-02-03 Volvo Lastvagnar Ab Anordning och förfarande för tillförsel av återcirkulerade avgaser
US20070107708A1 (en) * 2003-11-28 2007-05-17 Hitachi, Ltd. Diesel engine egr control device and motor drive type throttle valve device
JP4526395B2 (ja) * 2004-02-25 2010-08-18 臼井国際産業株式会社 内燃機関の過給システム
US6886544B1 (en) * 2004-03-03 2005-05-03 Caterpillar Inc Exhaust gas venturi injector for an exhaust gas recirculation system
DE102004025254A1 (de) * 2004-05-22 2005-12-08 Daimlerchrysler Ag Brennkraftmaschine mit Abgasrückführung
DE102005020484A1 (de) * 2005-04-29 2006-11-02 Mahle International Gmbh Abgasrückführeinrichtung
JP4497043B2 (ja) * 2005-07-20 2010-07-07 株式会社デンソー 排気ガス再循環装置
DE102006009153A1 (de) * 2006-02-24 2007-08-30 Mahle International Gmbh Abgasrückführeinrichtung
FR2918416B1 (fr) * 2007-07-02 2013-04-05 Coutier Moulage Gen Ind Dispositif de recirculation des gaz d'echappement pour moteur a combustion interne
DE102007054227A1 (de) * 2007-11-12 2009-05-14 Man Nutzfahrzeuge Ag Brennkraftmaschine mit AGR-Kühler
CN102128110A (zh) * 2011-01-21 2011-07-20 潍柴动力股份有限公司 一种进气装置及柴油机
US8915235B2 (en) * 2011-06-28 2014-12-23 Caterpillar Inc. Mixing system for engine with exhaust gas recirculation
US9938934B2 (en) 2012-06-26 2018-04-10 International Engine Intellectual Property Company, Llc Exhaust gas recirculation
JP6035987B2 (ja) * 2012-08-10 2016-11-30 いすゞ自動車株式会社 排気再循環用ベンチュリ
US9574528B2 (en) * 2014-12-17 2017-02-21 Caterpillar Inc. Exhaust gas recirculation adapter
CN105351116B (zh) * 2015-11-30 2019-09-10 康跃科技股份有限公司 一种循环进气系统

Also Published As

Publication number Publication date
EP3426901B1 (fr) 2019-12-18
US20180223776A1 (en) 2018-08-09
CN109072785A (zh) 2018-12-21
DE102016003003B4 (de) 2017-10-12
US10495034B2 (en) 2019-12-03
CN109072785B (zh) 2021-07-16
RU2700845C1 (ru) 2019-09-23
DE102016003003A1 (de) 2017-09-14
WO2017153042A1 (fr) 2017-09-14

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