EP2218897B1 - Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne - Google Patents

Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne Download PDF

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Publication number
EP2218897B1
EP2218897B1 EP09290103.2A EP09290103A EP2218897B1 EP 2218897 B1 EP2218897 B1 EP 2218897B1 EP 09290103 A EP09290103 A EP 09290103A EP 2218897 B1 EP2218897 B1 EP 2218897B1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
channel
coolant
gas line
region
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.)
Not-in-force
Application number
EP09290103.2A
Other languages
German (de)
English (en)
Other versions
EP2218897A1 (fr
Inventor
Klaus Dr. Hassdenteufel
Alexander Fabrizius
Georg Feldhaus
Michael Schmidt
Klaus Irmler
Hans-Ulrich Steurer
Thierry Dr. Marimbordes
Pascal Noiseau
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.)
Mann and Hummel GmbH
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
Mann and Hummel 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 Behr GmbH and Co KG, Mann and Hummel GmbH filed Critical Behr GmbH and Co KG
Priority to EP09290103.2A priority Critical patent/EP2218897B1/fr
Priority to EP11179888.0A priority patent/EP2402585B1/fr
Priority to US12/704,374 priority patent/US8534267B2/en
Publication of EP2218897A1 publication Critical patent/EP2218897A1/fr
Application granted granted Critical
Publication of EP2218897B1 publication Critical patent/EP2218897B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M26/17—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
    • F02M26/18—Thermal insulation or heat protection
    • 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 coolant channel is formed as a material-locking connected to the mounting member pipeline.
  • a pipeline may have a polygonal or round cross-section.
  • the connection of the coolant channel to a cooling circuit can then be done, for example, by simply attaching hoses on free ends of the pipeline.
  • the exhaust pipe opens into the channel upstream of an intercooler.
  • conventional air ducts are often made of plastic to save costs and weight, which previously opposed inflow of hot exhaust gas.
  • the channel is formed at least in the region of the mouth of the exhaust pipe of a plastic.
  • the mounting member has a central opening 2a, in which an exhaust pipe 3 made of a temperature-resistant material, such as stainless steel, is introduced, so that the exhaust gas (dashed arrow) flows into the channel for mixing with the combustion air (solid arrows).
  • the position of the inflow into the channel 1 is upstream of a charge air cooler.
  • an adjustable part of the exhaust gas flow is branched off and, if necessary, after cooling in an exhaust gas cooler (not shown), is supplied through the exhaust gas line 3 to the compressed combustion air in the channel 1.
  • the exhaust pipe can be heated to a high temperature of several hundred ° C. Damage to the material of the channel 1 is precluded by the fact that the exhaust pipe in the region of its junction dissipates heat to the coolant in the coolant channel 6, so that the mounting member 2 at any time at least in the region of its contact with the channel 1 has an uncritical temperature.
  • the seal 5 additional insulation between the mounting member 2 and exhaust pipe 3 is created.
  • the tube of the coolant channel 6 has a rectangular cross section, so that a particularly large contact area between the coolant channel 6 and mounting member 2 is available.
  • the coolant channel 6 is here formed by a patch on the mounting plate, the mounting member 2 through open sheet metal part 6b, so that the mounting member 2 forms a part of the wall of the coolant channel 6.
  • the molded part 6b is flat with the mounting member 2, wherein, for example, one of the parts may be formed from a solder-plated sheet metal.
  • Fig. 6 shows by way of example, which course the sheet metal part 6b can give the coolant channel 6.
  • terminals 6a are also provided for the coolant circuit.
  • the coolant channel is shaped so that it includes the fastening screws 2b for the flange. As a result, these thermal bridges are actively cooled.
  • the device according to the invention is constructed in a unitary manner with an indirect or coolant-flow intercooler 7 with air-flowed and coolant-flow-through flat tubes 9, which are located in the immediate vicinity of the Exhaust pipe is located.
  • a bottom 8 of the intercooler 7 is enlarged or formed so that it comprises an opening 8a for the exhaust pipe 3.
  • a collector cover 10 is formed accordingly. It can be provided to combine the header cover 10 or water tank of the intercooler and a cooling channel 6 in a deep-drawn sheet metal part, for example.
  • a cooling duct 6 is not necessarily provided in this embodiment, since an active cooling of the exhaust pipe 3 is already given due to the punching through of the collector.
  • a coolant channel 6 is formed with a connection 6a, wherein the connection 6a is at the same time a connection of the intercooler to the coolant circuit.
  • the protruding into the intercooler 7 exhaust pipe 3 is formed as a pipe section 12 having a plurality of radially directed exhaust ports 13 for the exhaust gas.
  • the exhaust gas is divided into a plurality of small partial flows, so that local overheating of components of the charge air cooler 7 is avoided.
  • such a pipe section 12 can also lead, while maintaining these advantages, into a simple channel 1, see, for example, the first exemplary embodiment.
  • a branching of the exhaust gas line into a plurality of, in the present case three, tube sections 12 occurs, as a result of which an even more distributed outflow of the exhaust gas is achieved.
  • the branching takes place inside the charge air cooler behind the recess 11 or the inlet-side bottom 8.
  • This example relates to a further development of an exhaust pipe 3 with pipe section 12 as in the example Fig. 11 ,
  • the outflow openings 13 are formed over the course of the pipe section 12 with increasing spatial density (see upper cut edge of the pipe section 12) or with an increasing cross-sectional area at the same distance (see lower cut edge of the pipe section 12).
  • this achieves the result that a hydraulic outflow cross section per unit length of the pipe section 12 increases in the flow direction, so that the pressure drop of the exhaust gas associated with the outflow is compensated. Overall, this results in a more uniform mass flow of the outflowing exhaust gas over the length of the pipe section 12.
  • Fig. 16 the flows of charge air (solid lines) and from a pipe section 12 inflowing exhaust gas (dashed lines) are shown, wherein the outflow openings are each arranged at different angles to the plane of symmetry or main flow direction of the charge air.

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 Silencers (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (12)

  1. Dispositif de recyclage de gaz d'échappement pour un moteur à combustion interne, comprenant une conduite de gaz d'échappement (3) servant au guidage de gaz d'échappement, et un conduit (1) servant à l'alimentation d'air fourni au moteur à combustion interne, où la conduite de gaz d'échappement (3) débouche dans le conduit (1), où la conduite de gaz d'échappement (3), dans une zone de son débouché dans le conduit (1), est en échange thermique avec un liquide de refroidissement - en circulation - d'un circuit de liquide de refroidissement, et où la conduite de gaz d'échappement (3) est assemblée avec un élément de montage (2), en particulier en métal, où le liquide de refroidissement traverse un conduit de liquide de refroidissement (6) prévu sur l'élément de montage (2), caractérisé en ce que la conduite de gaz d'échappement (3) présente une bride qui peut être assemblée avec l'élément de montage (2), et en ce que le conduit de liquide de refroidissement (6) est conçu comme une conduite tubulaire assemblée, par continuité de matière, avec l'élément de montage (2).
  2. Dispositif selon la revendication 1, caractérisé en ce qu'un joint (5) est disposé entre la bride (4) et l'élément de montage (2).
  3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce que le conduit de liquide de refroidissement (6) est conçu comme une pièce de forme en tôle (6a, 6b) constituée d'un seul ou de plusieurs éléments, ladite pièce de forme en tôle étant assemblée, en particulier par continuité de matière, avec l'élément de montage (2).
  4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la zone du débouché de la conduite de gaz d'échappement (3) est prévue au niveau d'un refroidisseur d'air de suralimentation (7) traversé par le liquide de refroidissement.
  5. Dispositif selon la revendication 4, caractérisé en ce que la zone du débouché est disposée au niveau d'un élément de collecteur (10) du refroidisseur d'air de suralimentation (7), ledit élément de collecteur étant situé côté liquide de refroidissement.
  6. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la conduite de gaz d'échappement (3) débouche dans le conduit (1), en amont d'un refroidisseur d'air de suralimentation (7).
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le conduit (1), au moins dans la zone du débouché de la conduite de gaz d'échappement (3), est conçu en étant composé d'une matière plastique.
  8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la conduite de gaz d'échappement (3), dans une zone de son débouché dans le conduit (1), est conçue comme au moins une partie tubulaire (12), où une pluralité d'ouvertures d'évacuation (13) prévues pour les gaz d'échappement est configurée le long de la partie tubulaire (12).
  9. Dispositif selon la revendication 8, caractérisé en ce que la conduite de gaz d'échappement (13), dans la zone de son débouché, se ramifie en une pluralité de parties tubulaires (12).
  10. Dispositif selon la revendication 8 ou 9, caractérisé en ce que les ouvertures d'évacuation (13) sont réparties sur une longueur de la partie tubulaire (12), en fonction du nombre et/ou de la taille, de manière telle qu'une section d'évacuation hydraulique, par unité de longueur de la partie tubulaire (12), augmente dans la direction d'écoulement des gaz d'échappement.
  11. Dispositif selon l'une quelconque des revendications 8 à 10, caractérisé en ce que des obstacles à l'écoulement (15) sont disposés sur au moins certaines des ouvertures d'évacuation (13).
  12. Dispositif selon l'une quelconque des revendications 8 à 11, caractérisé en ce que les ouvertures d'évacuation (13) sont orientées, au moins pour la plupart, suivant un angle d'évacuation compris entre 45° et 135°, en particulier entre 90° et 135°, par rapport à une direction principale d'écoulement de l'air dans le conduit (1).
EP09290103.2A 2009-02-12 2009-02-12 Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne Not-in-force EP2218897B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09290103.2A EP2218897B1 (fr) 2009-02-12 2009-02-12 Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne
EP11179888.0A EP2402585B1 (fr) 2009-02-12 2009-02-12 Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne
US12/704,374 US8534267B2 (en) 2009-02-12 2010-02-11 Device for exhaust gas recirculation for a combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09290103.2A EP2218897B1 (fr) 2009-02-12 2009-02-12 Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP11179888.0A Division EP2402585B1 (fr) 2009-02-12 2009-02-12 Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne
EP11179888.0A Division-Into EP2402585B1 (fr) 2009-02-12 2009-02-12 Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2218897A1 EP2218897A1 (fr) 2010-08-18
EP2218897B1 true EP2218897B1 (fr) 2014-07-09

Family

ID=40848710

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09290103.2A Not-in-force EP2218897B1 (fr) 2009-02-12 2009-02-12 Dispositif de recirculation de gaz d'échappement pour un moteur à combustion interne
EP11179888.0A Not-in-force EP2402585B1 (fr) 2009-02-12 2009-02-12 Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP11179888.0A Not-in-force EP2402585B1 (fr) 2009-02-12 2009-02-12 Dispositif de recirculation des gaz d'échappement pour un moteur à combustion interne

Country Status (2)

Country Link
US (1) US8534267B2 (fr)
EP (2) EP2218897B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9080694B2 (en) * 2011-06-22 2015-07-14 The Boeing Company Bulkhead fitting assembly
US9222447B2 (en) * 2012-07-26 2015-12-29 Ford Global Technologies, Llc Charge air cooler control system and method
DE102014201935A1 (de) 2014-02-04 2015-08-20 Mahle International Gmbh Anordnung zur Abgasrückführung

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US4134377A (en) * 1977-09-29 1979-01-16 Borg-Warner Corporation Exhaust gas recirculation control valve and heat exchanger
DE3531109A1 (de) 1985-03-18 1987-03-12 Rosenthal Ag Sanitaeres absperr- oder mischventil sowie verfahren und vorrichtung zu seiner herstellung
DE3511094A1 (de) * 1985-03-27 1986-10-09 Doduco KG Dr. Eugen Dürrwächter, 7530 Pforzheim Vorrichtung zum zufuehren eines zusatzgasstroms in den ansaugkanal eines ottomotors
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US5970960A (en) * 1996-09-18 1999-10-26 Nissan Motor Co., Ltd. Exhaust gas recirculation system of internal combustion engine
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Also Published As

Publication number Publication date
EP2402585B1 (fr) 2015-12-16
US8534267B2 (en) 2013-09-17
EP2218897A1 (fr) 2010-08-18
US20100199650A1 (en) 2010-08-12
EP2402585A1 (fr) 2012-01-04

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