EP2855909B1 - Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne - Google Patents

Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne Download PDF

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Publication number
EP2855909B1
EP2855909B1 EP13720363.4A EP13720363A EP2855909B1 EP 2855909 B1 EP2855909 B1 EP 2855909B1 EP 13720363 A EP13720363 A EP 13720363A EP 2855909 B1 EP2855909 B1 EP 2855909B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exhaust gas
internal combustion
combustion engine
housing
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.)
Active
Application number
EP13720363.4A
Other languages
German (de)
English (en)
Other versions
EP2855909A1 (fr
Inventor
Udo Rauschning
Wolfgang Graul
Markus Wallraven
Boris MARCIK
Patrick SUTTY
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.)
Pierburg GmbH
Original Assignee
Pierburg GmbH
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Filing date
Publication date
Application filed by Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP2855909A1 publication Critical patent/EP2855909A1/fr
Application granted granted Critical
Publication of EP2855909B1 publication Critical patent/EP2855909B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • 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
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
    • 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
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
    • 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
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts

Definitions

  • the device according to the invention shown in the figures for exhaust system consists of a mixing housing 10, to which a Heat exchanger 12 is attached.
  • the mixing housing 10 has an opening 14, in which a designed as a plug valve exhaust gas recirculation valve 16 is inserted, which is fastened by means of screws 18 to a flange 20 which surrounds the opening 14.
  • the exhaust gas recirculation valve 16 has a flow housing 22 with an inlet 24 and an outlet 26, each opening into the mixing housing 10. Between inlet 24 and outlet 26 there is a valve body which can not be recognized in the drawings, by means of which a flow cross-section from inlet 24 to outlet 26 can be regulated in accordance with the activation of an actuator 28.
  • the heat exchanger 12 is in the present embodiment, a flat tube bundle heat exchanger having an outer housing 34 which defines a coolant jacket radially outward and in which the flat tubes of the heat exchanger 12 extend.
  • These flat tubes are each soldered to correspondingly shaped openings 36 in a flange plate 38 and have a U-shape, so that both ends of the flat tubes in the openings 36 of the same flange plate 38 open.
  • the flat tubes with the flange plate 38 form an inner housing 39 of the heat exchanger 12.
  • the openings 36 of this flange plate 38 form not only the inlet 30 but also the outlet 40 into which the second ends of the flat tubes open.
  • This outlet 40 opens into an outlet space 42 in the mixing housing 10 which has an outlet opening 44, via which the exhaust gas can leave the mixing housing 10.
  • the flange plate 38 is fixed to a flange 46 on the outer housing 34, this can be done either by soldering or welding or in the present embodiment by screws 48.
  • the mixing housing 10 is also connected via a formed on the mixing housing 10 flange 50 but via another hole pattern with the flange plate 38 and the outer housing 34 with the interposition of a seal 52 by means not shown screws.
  • a pre-positioning of the mixing housing 10 to the flange 38 is made by the heads of the screws 48 which are used for mounting the flange 38 on the outer housing 34 are used as dowel pins by these project into corresponding openings 54 on the flange 50 of the mixing housing 10.
  • a bypass flap 56 is eccentrically mounted in the mixing housing 10 via a shaft 58.
  • the bypass flap 56 has two end positions in which it closes either the inlet 30 of the heat exchanger 12 or a bypass channel, which is formed by a direct connection of the inlet space 32 with the outlet space 42 in the mixing housing 10.
  • a circumferential first valve seat 60 is correspondingly formed on the mixing housing 10, on which the bypass flap 56 rests circumferentially in the position closing the bypass passage.
  • a second valve seat 62 is formed by a collar 64, which is fastened to the flange plate 38 of the heat exchanger 12 at the opposite side to the first flat tube ends, in particular by soldering, and thus protrudes into the inlet space 32 of the mixing housing 10.
  • the above positioning is important to a dense
  • the collar 64 unlike the bypass flap 56, is not fastened directly but only indirectly via the flange plate 38 to the mixing housing 10, the closure can be reached on the collar 64 when the bypass flap 56 rests on it.
  • the mounting of the collar 64 is very simple.
  • One end of the shaft 58 protrudes from the mixing housing 10 to the outside.
  • an eccentric 72 is arranged, which is connectable in a known manner with an actuator, not shown.
  • the second valve seat 62 can be aligned by means of the collar 64 with little effort and without necessary mechanical processing of the mixing housing 10 via the flange plate 38 to the bypass valve 56, wherein pressure losses are reduced in the exhaust system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Silencers (AREA)

Claims (12)

  1. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne avec un échangeur de chaleur (12) ayant un carter intérieur (39) et un carter extérieur (34),
    un clapet by-pass (56),
    un carter de mélange (10), dans lequel le clapet by-pass (56) est supporté, et qui est fixé à l'échangeur de chaleur (12),
    une première siège de soupape (60) formée sur le carter de mélange (60) et sur laquelle reste le clapet by-pass (56) quand il est en état fermant le by-pass,
    une deuxième siège de soupape (62) sur laquelle reste le clapet by-pass (56) quand il est en état fermant l'échangeur de chaleur (12),
    caractérisé en ce qu'
    une collerette (64) est formée sur le carter intérieur (39) dudit échangeur de chaleur (12), la collerette formant la deuxième siège de soupape (62).
  2. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon la revendication 1, caractérisé en ce que le carter intérieur (39) comporte une plaque à bride (38) sur laquelle est formée la collerette (64).
  3. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon la revendication 2, caractérisé en ce que la plaque à bride (38) délimite axialement un canal de réfrigérant entre le carter intérieur (39) et le carter extérieur (34).
  4. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon la revendication 2 ou 3, caractérisé en ce que le carter de mélange (10) est fixé sur le carter extérieur (34) dudit échangeur de chaleur (12) avec interposition de la plaque à bride (38).
  5. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que l'échangeur de chaleur (12) est un échangeur tubulaire dont les tubes sont fixés à des ouvertures (36) de la plaque à bride (38), qui sont formées selon les tubes, ladite collerette (64) étant fixée sur le côté opposé de la plaque à bride (38) et s'étendant dans le carter de mélange (10).
  6. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que le clapet by-pass (56) est fixé de manière excentrique sur un arbre (58) supporté dans ledit carter de mélange (10) et, en état fermé, reste sur tout le pourtour de la siège de soupape (60, 62) respective.
  7. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon la revendication 6, caractérisé en ce que l'échangeur de chaleur (12) peut être traversé en U et la plaque à bride (38) forme une entrée (30) et une sortie (40) dudit échangeur de chaleur (12), l'entrée (30) et la sortie (40) étant disposées à des côtés opposés du support de l'arbre (58) du clapet by-pass (56).
  8. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que des ouvertures (54) sont formées dans le carter de mélange (10), dans lesquelles saillent des éléments de positionnement (48) disposés sur l'échangeur de chaleur (12).
  9. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon la revendication 2, caractérisé en ce que les vis (40), par lesquels ladite plaque à bride (38) sur le carter extérieur (34) dudit échangeur de chaleur (12), servent comme éléments de positionnement.
  10. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon la revendication 8, caractérisé en ce que le carter de mélange (10) est aligné par rapport à l'échangeur de chaleur (12) à l'aide de goujons.
  11. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une paroi (66), formée sur le côté orienté à l'opposée de la sortie (40) dudit échangeur de chaleur (12), a une étendue supérieure à celle d'un paroi (68) formé sur le côté orienté vers la sortie (40) dudit échangeur de chaleur (12).
  12. Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une soupape de recirculation des gaz d'échappement (16) est disposée dans le carter de mélange (10) en amont du clapet by-pass (56), la sortie (26) de la soupape étant disposée opposée à l'entrée (30) dudit échangeur de chaleur (12).
EP13720363.4A 2012-05-25 2013-04-30 Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne Active EP2855909B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012104545.3A DE102012104545B4 (de) 2012-05-25 2012-05-25 Vorrichtung zur Abgasführung in einer Verbrennungskraftmaschine
PCT/EP2013/059027 WO2013174629A1 (fr) 2012-05-25 2013-04-30 Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2855909A1 EP2855909A1 (fr) 2015-04-08
EP2855909B1 true EP2855909B1 (fr) 2016-03-30

Family

ID=48289149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13720363.4A Active EP2855909B1 (fr) 2012-05-25 2013-04-30 Dispositif de guidage des gaz d'échappement dans un moteur à combustion interne

Country Status (5)

Country Link
EP (1) EP2855909B1 (fr)
DE (1) DE102012104545B4 (fr)
ES (1) ES2572708T3 (fr)
IN (1) IN2014DN07334A (fr)
WO (1) WO2013174629A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016200371B4 (de) 2016-01-14 2018-12-13 Bayerische Motoren Werke Aktiengesellschaft Bypassklappe für einen Abgas-Rückführ-Kühler

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61237998A (ja) * 1985-04-15 1986-10-23 Toyo Radiator Kk 過給気バイパス装置を組込んだ過給器用放熱器
DE102006035423A1 (de) * 2005-11-11 2007-05-16 Denso Corp Ventilvorrichtung und Abgasrezirkulationsvorrichtung mit dieser
JP5014032B2 (ja) * 2007-09-10 2012-08-29 ダイハツ工業株式会社 内燃機関における還流排気ガスの冷却装置

Also Published As

Publication number Publication date
ES2572708T3 (es) 2016-06-01
WO2013174629A1 (fr) 2013-11-28
DE102012104545A1 (de) 2013-11-28
DE102012104545B4 (de) 2014-05-15
IN2014DN07334A (fr) 2015-04-24
EP2855909A1 (fr) 2015-04-08

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