EP1621755A2 - Recyclage des gaz d'échappement propre et à basse pression - Google Patents

Recyclage des gaz d'échappement propre et à basse pression Download PDF

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Publication number
EP1621755A2
EP1621755A2 EP05013558A EP05013558A EP1621755A2 EP 1621755 A2 EP1621755 A2 EP 1621755A2 EP 05013558 A EP05013558 A EP 05013558A EP 05013558 A EP05013558 A EP 05013558A EP 1621755 A2 EP1621755 A2 EP 1621755A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
internal combustion
combustion engine
gas recirculation
particulate filter
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.)
Withdrawn
Application number
EP05013558A
Other languages
German (de)
English (en)
Other versions
EP1621755A3 (fr
Inventor
Hans-Jürgen Brüne
Gerhard Kemethofer
Franz Drexler
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1621755A2 publication Critical patent/EP1621755A2/fr
Publication of EP1621755A3 publication Critical patent/EP1621755A3/fr
Withdrawn legal-status Critical Current

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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
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • 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
    • F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0437—Liquid cooled heat exchangers
    • 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
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/16—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust 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
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/28—Layout, e.g. schematics with liquid-cooled heat exchangers

Definitions

  • the present invention relates to an internal combustion engine in which exhaust gases are formed, which are partially recycled into the combustion chamber.
  • Such an internal combustion engine is known for example from DE 42 40 239 A1.
  • the exhaust gases are first used to drive a compressor, a turbocharger, to compress the combustion air. After that, the exhaust gases are passed through a particle filter. The so purified exhaust gases can be re-forwarded to the combustion process after cooling.
  • the volume flow of the recirculated exhaust gas is adjusted by a throttle body, after the particulate filter.
  • this internal combustion engine is comparatively inefficient and additionally has the disadvantage that sulfur, which is often present in the fuel, accumulates through the exhaust gas recirculation.
  • the internal combustion engine to a turbine which is driven by the exhaust gases of the internal combustion engine and which is used for compression of the internal combustion engine supplied air and the recirculated exhaust gases.
  • Such turbines / compressors are known as so-called turbochargers according to the prior art.
  • the internal combustion engine according to the invention has a particle filter in which soot particles which are formed, for example, during the combustion of diesel fuel, are separated as completely as possible from the exhaust gas. With the particulate filter or with a separate unit and the sulfur is removed from the exhaust gases.
  • the internal combustion engine has an exhaust gas recirculation, which is arranged between the outlet of the particulate filter and the suction side of the turbine. The exhaust gases to be supplied are therefore sucked out of the main exhaust gas line after the particle filter and fed to the fresh air, which also rests on the suction side of the compressor.
  • a cooler is arranged in the exhaust gas recirculation, so that the recirculated exhaust gas is already pre-cooled, mixed with the air and thus compressed in the compressor.
  • This embodiment of the present invention has the advantage that the air / exhaust gas mixture can be fed to the combustion process at a higher pressure.
  • a control element is arranged after the particulate filter that regulates the recirculated exhaust gas volume flow, for example, depending on the engine power.
  • the air / exhaust gas mixture after it has been compressed by the turbocharger and before it flows into the combustion chamber of the internal combustion engine cooled by a charge air cooler.
  • This embodiment of the present invention has the advantage that the mass of the mixture to be introduced into the combustion chamber can be increased.
  • FIG. 1 shows the internal combustion engine according to the invention, which in the present case has six combustion chambers 11, cylinders, in which a fuel-air mixture, preferably a diesel-air mixture, is burnt.
  • the burned gases are collected in the manifolds 17 and, as indicated by arrow 12, supplied to a turbine 2 which propels and relaxes them.
  • the so-relaxed exhaust gases are, as symbolized by arrow 21, a particle filter 3, which also has a sulfur trap supplied.
  • the particle filter 3 has an inlet 5 and an outlet 6, from which the exhaust gases after their purification flow out as far as possible free of particles and sulfur.
  • a closable by a flap 9 branch is arranged, can be recycled by the exhaust gases in the combustion chamber.
  • the exhaust gas After the exhaust gas has passed through the flap 9, it flows out of the exhaust, as shown by arrow 20. Through the pipe 4, the so-called exhaust gas recirculation is realized.
  • part of the exhaust gas first flows once through a low-pressure cooler 8, for example a heat exchanger, in which the recirculated exhaust gases are cooled by the cooling medium 14.
  • the thus cooled exhaust gas is passed to the suction side 7 of the compressor of the turbocharger and mixed there with fresh air 13 and compressed in the turbocharger 2.
  • the thus compressed gas is cooled once again in a charge air cooler 10, by means of the heat exchange medium 15, before it via a flap 16, with the air / exhaust gas mixture stream, which is provided via the manifold 19 to the combustion chambers 11 each available can.
  • the internal combustion engine according to the invention has the advantage that the exhaust gas can flow to the particle filter without a further pressure loss in the environment.
  • the recirculated gas is particle-free and in particular free of sulfur.

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)
  • Processes For Solid Components From Exhaust (AREA)
EP05013558A 2004-07-28 2005-06-23 Recyclage des gaz d'échappement propre et à basse pression Withdrawn EP1621755A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004036562A DE102004036562A1 (de) 2004-07-28 2004-07-28 Saubere Niederdruckabgasrückführung

Publications (2)

Publication Number Publication Date
EP1621755A2 true EP1621755A2 (fr) 2006-02-01
EP1621755A3 EP1621755A3 (fr) 2010-05-05

Family

ID=34975220

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05013558A Withdrawn EP1621755A3 (fr) 2004-07-28 2005-06-23 Recyclage des gaz d'échappement propre et à basse pression

Country Status (2)

Country Link
EP (1) EP1621755A3 (fr)
DE (1) DE102004036562A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936175A1 (fr) 2006-12-21 2008-06-25 Magneti Marelli Sistemi di Scarico S.p.a. Système d'échappement pour moteur à combustion interne fourni avec un circuit de recirculation de gaz d'échappement
EP1812705B1 (fr) * 2004-11-19 2008-10-01 Bayerische Motorenwerke Aktiengesellschaft Vehicule a moteur turbo diesel et recyclage des gaz d'echappement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4240239A1 (de) 1992-12-01 1994-06-09 Wolfgang Schmitz Verbrennungskraftmaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01159029A (ja) * 1987-12-16 1989-06-22 Toyota Motor Corp ディーゼルエンジンの排気浄化装置
DE4007516C2 (de) * 1990-03-09 1997-03-06 Kloeckner Humboldt Deutz Ag Dieselmotor
DE19921974A1 (de) * 1999-05-12 2000-11-16 Volkswagen Ag Vorrichtung zum Reduzieren von schädlichen Bestandteilen im Abgas einer Brennkraftmaschine, insbesondere einer Diesel-Brennkraftmaschine
DE19955324A1 (de) * 1999-11-17 2001-05-23 Volkswagen Ag Vorrichtung und Verfahren zum Reduzieren von schädlichen Bestandteilen im Abgas einer Brennkraftmaschine, insbesondere einer Diesel-Brennkraftmaschine
ES2292571T3 (es) * 2000-03-27 2008-03-16 Toyota Jidosha Kabushiki Kaisha Dispositivo de depuracion de gas de escape.
DE10029513B4 (de) * 2000-06-21 2004-04-15 Daimlerchrysler Ag Verfahren und Vorrichtung zur Reduzierung von Ascherückständen in einem Partikelfilter
JP3674557B2 (ja) * 2001-09-04 2005-07-20 トヨタ自動車株式会社 排気ガス浄化装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4240239A1 (de) 1992-12-01 1994-06-09 Wolfgang Schmitz Verbrennungskraftmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1812705B1 (fr) * 2004-11-19 2008-10-01 Bayerische Motorenwerke Aktiengesellschaft Vehicule a moteur turbo diesel et recyclage des gaz d'echappement
EP1936175A1 (fr) 2006-12-21 2008-06-25 Magneti Marelli Sistemi di Scarico S.p.a. Système d'échappement pour moteur à combustion interne fourni avec un circuit de recirculation de gaz d'échappement

Also Published As

Publication number Publication date
DE102004036562A1 (de) 2006-03-23
EP1621755A3 (fr) 2010-05-05

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