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EP2018472B1 - Ensemble de soupapes pour système de recyclage des gaz d'échappement - Google Patents

Ensemble de soupapes pour système de recyclage des gaz d'échappement Download PDF

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Publication number
EP2018472B1
EP2018472B1 EP07728912A EP07728912A EP2018472B1 EP 2018472 B1 EP2018472 B1 EP 2018472B1 EP 07728912 A EP07728912 A EP 07728912A EP 07728912 A EP07728912 A EP 07728912A EP 2018472 B1 EP2018472 B1 EP 2018472B1
Authority
EP
European Patent Office
Prior art keywords
housing
inlet
outlet
valve
exhaust gas
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.)
Ceased
Application number
EP07728912A
Other languages
German (de)
English (en)
Other versions
EP2018472A1 (fr
Inventor
Andreas GRÜNER
Robert Sendor
Rüdiger Knauß
Bernhard Schwalk
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.)
Mahle International GmbH
Original Assignee
Mahle International 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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP2018472A1 publication Critical patent/EP2018472A1/fr
Application granted granted Critical
Publication of EP2018472B1 publication Critical patent/EP2018472B1/fr
Ceased 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
    • F02M26/65—Constructional details of EGR valves
    • F02M26/72—Housings
    • F02M26/73—Housings with means for heating or cooling the EGR 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
    • F02M26/23—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
    • 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
    • F02M26/38—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 parallel
    • 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
    • F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems
    • 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
    • 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
    • F02M26/33—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 controlling the temperature of the recirculated gases

Definitions

  • the present invention relates to a valve arrangement for an exhaust gas recirculation device of an internal combustion engine, in particular in a motor vehicle.
  • the invention also relates to an exhaust gas recirculation device equipped with such a valve arrangement.
  • a valve assembly of the type mentioned is from the DE 10 2004 010 117 A1 known. It comprises a first valve for controlling a first gas path, which is adjustable between an open position, a closed position and at least one intermediate position, and a second valve for controlling a second gas path separated from the first gas path, which is independent of the first valve between an open position, a closed position and at least one intermediate position is adjustable.
  • the two valves are arranged and the two gas paths are passed.
  • an inlet flange and an outlet flange are formed, with which the housing can be embedded in an exhaust gas recirculation device and between which extend the two gas paths.
  • an exhaust gas recirculation cooler is also installed in the housing, wherein the housing of the Valve assembly also has connections for flow and return of the exhaust gas recirculation cooler.
  • Another valve arrangement with two valves for controlling two gas paths is from the EP 1 275 838 A1 known. Also the EP 1 342 908 A2 shows a valve device with two valves. A single exhaust gas recirculation valve is out of the DE 103 44 218 A1 known.
  • an exhaust gas recirculation is increasingly used, thereby improving the emission values and the economy of the internal combustion engine.
  • a modern exhaust gas recirculation (EGR) device typically has an EGR cooler installed in an exhaust gas recirculation line, EGR line for short, which is connected to a cooling circuit operating with a liquid coolant.
  • EGR exhaust gas recirculation
  • An EGR device which has an EGR cooler externally bypassing bypass, which is controllable by means of a corresponding switching valve. With the help of such a bypass the possibility is created to bypass the EGR cooler with activated bypass.
  • the present invention addresses the problem of providing an inexpensive way for an EGR device to adjust the amount and temperature of the recirculated exhaust gases as closely as possible.
  • the invention is based on the general idea to provide for the EGR device, a valve assembly containing two separate gas paths and two valves for controlling these gas paths in a common housing, wherein the two valves each switchable between an open position, a closed position and at least one intermediate position are.
  • the separate controllability of the two valves can be any division of the recirculated exhaust gases on the two gas paths achieve. For example, this may set any mixing ratio between a flow passed through a radiator and a bypass.
  • the intermediate positions of the two valves allow a volume regulation of the recirculated exhaust gases. Consequently, the amount of the recirculated exhaust gases, which is also referred to as exhaust gas recirculation rate or short EGR rate, can be adjusted. As a result, for example, an additional valve for adjusting the EGR rate is unnecessary.
  • the valve assembly can thereby build comparatively inexpensive.
  • the invention proposes to equip the housing with an inlet web, which is arranged in the inlet line and forms therein two separate inlet channels, of which the first inlet channel is connected to the inlet side of the first valve, while the second inlet channel to the inlet side of the second Valve is connected, wherein in addition the housing with its inlet flange to an exhaust gas recirculation cooler of the exhaust gas recirculation device can be connected, in which case the inlet web in mounted state protrudes into an outlet space of the exhaust gas recirculation cooler so far that it separates two outlet part spaces from each other, which are connected to cooling pipes of the exhaust gas recirculation cooler.
  • the invention also proposes to provide the housing with an outlet land disposed in the outlet conduit forming therein two separate outlet channels, of which the first outlet channel is connected to the outlet side of the first valve, while the second outlet channel is connected to the outlet side the second valve is connected, in which case the housing with its outlet flange to an exhaust gas recirculation cooler of the exhaust gas recirculation line is connected, then the outlet web in the assembled state far protrudes into an inlet space of the exhaust gas recirculation cooler, that it separates two Einlasssteilsammlung from each other, which is connected to cooling pipes of the exhaust gas recirculation cooler are.
  • the proposed measures make it possible to realize two separate exhaust gas paths in the exhaust gas recirculation cooler, which can be controlled independently of one another via the valve arrangement.
  • the common housing can be designed so that it can be connected to a coolant circuit.
  • the cooling of the housing allows the arrangement of the valve assembly upstream or inlet side of the EGR cooler, which is advantageous for the precise adjustment of the EGR rate and the cooling effect.
  • the cooled housing allows the use of plastic as a material for components of the valve assembly which are mounted to the housing. For example, can thus housing of actuators for actuating the valves made of plastic.
  • Fig. 1 and 2 includes an exhaust gas recirculation device 1 only partially shown, hereinafter EGR device 1, a valve assembly 2 and an exhaust gas recirculation cooler 3, hereinafter EGR cooler 3.
  • EGR device 1 an exhaust gas recirculation device 1 only partially shown
  • the valve assembly 2 is connected directly to the EGR cooler 3, whereby the valve assembly 2 and the EGR cooler 3 form a completely pre-assembled assembly 4, which is easy to handle and facilitates the installation in an exhaust gas recirculation line 5, hereinafter referred to EGR line 5, which is indicated here only by broken lines.
  • the EGR device 1 is used in a conventional manner in an internal combustion engine, not shown, which may be arranged in particular in a motor vehicle, to recirculate exhaust gases of the internal combustion engine from an exhaust gas side to a fresh gas side of the internal combustion engine.
  • the EGR line 5 is connected on the one hand to the exhaust side and on the other hand to the fresh gas side of the internal combustion engine and contains the valve assembly 2 and the EGR cooler. 3
  • the valve assembly 2 comprises a common housing 6, in which two more or less separate gas paths, namely a first gas path 7 and a second gas path 8 are formed, which are indicated here by arrows.
  • the valve arrangement 2 also comprises two valves, namely a first valve 9 and a second valve 10, which are each arranged in the housing 6.
  • the first valve 9 is assigned to the first gas path 7 and can thus control a gas flow through the first gas path 7.
  • the second valve 10 is assigned to the second gas path 8 and can thus control a gas flow through the second gas path 8.
  • Both valves 9, 10 are each and independently adjustable between an open position, a closed position and at least one intermediate position.
  • the valve arrangement 2 comprises for each valve 9, 10 an actuator, namely a first actuator 11 for actuating the first valve 9 and a second actuator 12 for actuating the second valve 10.
  • the common housing 6 contains in addition to the two gas paths 7, 8 also has a coolant path 13, which is also indicated here by arrows.
  • the coolant path 13 can be connected to a cooling circuit 14, which is indicated here by arrows drawn with a broken line.
  • the housing 6 has an inlet pipe 15 and an outlet pipe 16, which are both connected to the coolant path 13.
  • the inlet nozzle 15 is connected via a connecting piece 17 to a coolant outlet 18 of the EGR cooler 3.
  • a coolant inlet 19 of the EGR cooler 3 is connected to the cooling circuit 14, so that the coolant of the cooling circuit 14 enters the assembly 4 via the coolant inlet 19 of the EGR cooler 3 and back out of the assembly 4 via the outlet port 16 of the housing 6 exit.
  • the housing 6 is preferably made of metal. Preferably, it may be made in one piece.
  • the housing 6 is a cast component.
  • the cooled housing 6 allows the use of plastic for components of the valve assembly 2 to be mounted on the housing 6. These are, for example, a first drive housing 20 of the first actuator 11 and a second drive housing 21 of the second actuator 12. Both drive housing 20, 21 can be inexpensively made of plastic and can still be attached to the housing 6, although this in the operation of the EGR Device 1 is traversed by hot exhaust gases.
  • the housing 6 has an inlet flange 22 with which the housing 6 can be inserted into the EGR device 1.
  • the housing 6 is connected via the inlet flange 22 to the EGR line 5.
  • the housing 6 also has an outlet flange 23 with which the housing 6 can be inserted into the EGR device 1.
  • the housing 6 is connected via the outlet flange 23 directly to the EGR cooler 3.
  • a fastener, here a clamp is designated 24.
  • the two gas paths 7, 8 now extend within the housing 6 from the inlet flange 22 to the outlet flange 23.
  • the housing 6 may be provided with an inlet duct 25 which leads from the inlet flange 22 to inlet sides of the valves 9, 10 which are not designated in greater detail.
  • the housing 6 also includes an inlet leg 26.
  • This inlet leg 26 is disposed in the inlet duct 25 to form therein two separate inlet channels, namely a first inlet channel 27 and a second inlet channel 28.
  • the inlet web 26 is dimensioned so that it extends into the inlet flange 22 and terminates flush therewith.
  • the first inlet passage 27 thus connects the inlet flange 22 with the inlet side of the first valve 9, while the second inlet passage 28 connects the inlet flange 22 with the inlet side of the second valve 10.
  • the inlet web 26 is preferably an integral part of the housing 6. In the configuration shown here, In which the valve arrangement 2 is arranged upstream of the EGR cooler 3 with regard to the exhaust gas flow, the inlet web 26 can basically be dispensed with.
  • the housing 6 has an outlet line 29 which leads from the outlet flange 23 to the outlet sides of the valves 9, 10 which are not designated in any more detail. Furthermore, an outlet web 30 is formed in the housing 6. This is arranged in the outlet line 29 so as to form therein two separate outlet channels, namely a first outlet channel 31 and a second outlet channel 32. Further, the outlet land 30 is dimensioned to project axially beyond the outlet flange 23.
  • the first outlet channel 31 connects the outlet side of the first valve 9 with the outlet flange 23.
  • the second outlet channel 32 connects the outlet side of the second valve 10 with the outlet flange 23.
  • the outlet web 30 is preferably an integral part of the housing 6.
  • the EGR cooler 3 includes a cooling space 33 through which liquid coolant can flow, which is connected to the coolant inlet 19 and to the coolant outlet 18 and which is delimited on an exhaust gas inlet side with an inlet wall 34 and on an exhaust gas outlet side with an outlet wall 35.
  • the cooling space 33 is penetrated by a plurality of cooling tubes 36, which penetrate on the one hand the inlet wall 34 and on the other hand the outlet wall 35.
  • the cooling pipes 36 communicate with an intake space 37 of the EGR cooler 3 at the exhaust gas inlet side and with an exhaust space at the exhaust gas outlet side 38.
  • the outlet web 30 of the housing is a cooling space 33 through which liquid coolant can flow, which is connected to the coolant inlet 19 and to the coolant outlet 18 and which is delimited on an exhaust gas inlet side with an inlet wall 34 and on an exhaust gas outlet side with an outlet wall 35.
  • the cooling space 33 is penetrated by a plurality of cooling tubes 36, which penetrate on the one hand the inlet wall 34 and on the other hand the outlet wall
  • the outlet web 30 can touch the inlet wall 34 or even maintain a comparatively small gap therewith.
  • the outlet land 30 in the inlet space 37 separates two inlet part spaces from each other, namely a first inlet part space 39 communicating with the first outlet channel 31 and a second inlet part space 40 communicating with the second outlet channel 32.
  • the inlet part spaces 39, 40 communicate independently with each other via the cooling tubes 36 Outlet space 38.
  • cooling tubes 36 may be equipped with turbulators and / or fins 41, the flow of heat between exhaust and cooling pipe 36 on the one hand and thus the heat flow during the flow through the respective cooling tube 36 increase between cooling tube 36 and coolant on the other hand.
  • valve arrangement 2 is thus used to divide the recirculated exhaust gas flow into two cooling tube groups of different cooling within the EGR cooler 3.
  • valve assembly 2 may also be used to divide the recirculated exhaust gas flow between an EGR cooler and an internal or external bypass bypassing the EGR cooler.
  • valve assembly 2 is disposed upstream of the EGR cooler 3 with respect to the exhaust gas flow. In another embodiment, it is basically possible to arrange the valve assembly 2 with respect to the exhaust gas flow downstream of the EGR cooler. A cooling of the housing 6 can then be dispensed with.
  • each valve 9, 10 can, in particular with regard to Fig. 4 , be constructed in the manner of a poppet valve.
  • each valve 9, 10 comprises a valve disk 42, which is arranged to be adjustable in the stroke to a valve seat 44 via a valve stem 43.
  • the valve seat 44 is formed on a valve sleeve 45, which is also part of the respective valve 9, 10.
  • the valve seat 44 together with the valve disk 42 cooperating therewith, forms the inlet side of the respective valve 9, 10.
  • the outlet side of the respective valve 9, 10 is formed by a window 46, which is located in the Valve sleeve 45 of the respective valve 9, 10 is recessed.
  • the valves 9, 10 thus each comprise all the components required for the functioning of the respective valve 9, 10.
  • the valves 9, 10 are designed so that they can be used in the fully assembled state in the housing 6.
  • the housing 6 accordingly Fig. 3 a mounting side 47, through which the valves 9, 10 are inserted into the housing 6.
  • This mounting side 47 is equipped with a mounting flange 48 and is closed in the assembled state with a flange 49.
  • the flange plate 49 is preferably shaped to be complementary to the mounting flange 48.
  • a seal 50 arranged to close the mounting side 47 tight.
  • the term "axial" in this context refers to the mounting direction, that is, the plug-in direction, with which the valves 9, 10 are inserted into the housing 6.
  • Fig. 3 and 4 forms the flange plate 49 together with the attached valves 9, 10 and together with the actuators attached thereto 11, 12 a completely pre-assembled unit 51.
  • the assembly of the valve assembly 2 is thereby considerably simplified.
  • the flange plate 49 may be made of plastic.
  • the flange plate 49 and the drive housings 20, 21 can be made in one piece.
  • valves 9, 10 are designed such that they permit not only the two end positions, open position and closed position, but also at least one, preferably any intermediate positions, an exhaust gas recirculation rate, EGR for short, can be achieved with the aid of the valves 9, 10 Set rate, both by the first gas path 7 and by the second gas path 6 independently.
  • the valve assembly 2 allows on the one hand the setting of the EGR rate and on the other hand the adjustment of the distribution of recirculated exhaust gases to the two gas paths 7, 8.
  • the distribution of the recirculated exhaust gases to the two gas paths 7, 8 ultimately determines the cooling of the recirculated exhaust gases, so that with the aid of the valve assembly 2 in addition to the EGR rate also the exhaust gas cooling is adjustable.

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

Claims (13)

  1. Ensemble de soupapes pour dispositif de recyclage de gaz d'échappement (1) d'un moteur à combustion interne, notamment dans un véhicule automobile,
    - comportant une première soupape (9) pour commander un premier chemin de gaz (7), qui peut être réglé entre une position d'ouverture, une position de fermeture et au moins une position intermédiaire,
    - comportant une deuxième soupape (10) pour commander un deuxième chemin de gaz (8) séparé du premier chemin de gaz (7), qui peut être réglé indépendamment de la première soupape (9) entre une position d'ouverture, une position de fermeture et au moins une position intermédiaire,
    - comportant un logement commun (6), dans lequel les deux soupapes (9,10) sont disposées et à travers lequel les deux chemins de gaz (7,8) sont guidés,
    - dans lequel le logement (6) présente une bride d'admission (22) et une bride d'échappement (23), avec lesquelles le logement (6) peut être intégré dans le dispositif de recyclage de gaz d'échappement (1) et entre lesquelles les deux chemins de gaz (7,8) s'étendent, caractérisé en ce que
    - le logement (6) présente un gradin d'admission (26), qui est disposé dans la conduite d'admission (25) et réalise dans celle-ci deux canaux d'admission (27,28) séparés, desquels le premier canal d'admission (27) est relié au côté d'admission de la première soupape (9), alors que le deuxième canal d'admission (28) est relié au côté d'admission de la deuxième soupape (10), dans lequel le logement (6) peut être raccordé par sa bride d'admission (22) à un refroidisseur de recyclage de gaz d'échappement (3) du dispositif de recyclage de gaz d'échappement (1), dans lequel le gradin d'admission (26) en l'état monté saille à l'intérieur d'une chambre d'échappement (38) du refroidisseur de recyclage de gaz d'échappement (3) au point qu'il sépare l'une de l'autre deux chambres partielles d'échappement, qui sont reliées à des tuyaux de refroidissement (36) du refroidisseur de recyclage de gaz d'échappement (3), et/ou
    - le logement (6) présente un gradin d'échappement (30), qui est disposé dans la conduite d'échappement (29) et réalise dans celle-ci deux canaux d'échappement séparés (31,32), desquels le premier canal d'échappement (31) est relié au côté d'échappement de la première soupape (9), alors que le deuxième canal d'échappement (32) est relié au côté d'échappement de la deuxième soupape (10), dans lequel le logement (6) peut être raccordé par sa bride d'échappement (23) à un refroidisseur de recyclage de gaz d'échappement (3) du dispositif de recyclage de gaz d'échappement (1), dans lequel le gradin d'échappement (30) en l'état monté saille à l'intérieur d'une chambre d'admission (37) du refroidisseur de recyclage de gaz d'échappement (3) au point qu'il sépare l'une de l'autre dans celle-ci deux chambres partielles d'admission (39,40), qui sont reliées à des tuyaux de refroidissement (36) du refroidisseur de recyclage de gaz d'échappement (3).
  2. Ensemble de soupapes selon la revendication 1, caractérisé en ce que
    - le logement (6) contient un chemin de milieu de refroidissement (13) et
    - le logement (6) présente un embout d'admission (15) relié au chemin de milieu de refroidissement (13) et un embout d'échappement (16) relié au chemin de milieu de refroidissement (13).
  3. Ensemble de soupapes selon la revendication 1 ou 2,
    caractérisé en ce que
    le logement (6) est fabriqué en métal.
  4. Ensemble de soupapes selon une des revendications 1 à 3,
    caractérisé en ce que
    le logement (6) est fabriqué en un seul tenant.
  5. Ensemble de soupapes selon une des revendications 1 à 4,
    caractérisé en ce que
    - pour actionner la première soupape (9), une première servo-commande (11) est prévue, qui est fixées par son premier logement d'entraînement (20) sur le logement commun (6), et
    - pour actionner la deuxième soupape (10), une deuxième servo-commande (12) est prévue, qui est fixée par son deuxième logement d'entraînement (21) sur le logement commun (6).
  6. Ensemble de soupapes selon la revendication 5,
    caractérisé en ce que
    le premier logement d'entraînement (20) et le deuxième logement d'entraînement (21) sont fabriqués en plastique.
  7. Ensemble de soupapes selon une des revendications 1 à 6,
    caractérisé en ce que
    le logement (6) présente une conduit d'admission (25) menant de la bride d'admission (22) aux côtés d'admission des soupapes (9,10).
  8. Ensemble de soupapes selon une des revendications 1 à 7,
    caractérisé en ce que
    le gradin d'admission (26) s'étend jusqu'au à ou jusque dans la bride d'admission (22) ou en dépassant axialement vers l'extérieur au dessus.
  9. Ensemble de soupapes selon une des revendications 1 à 8,
    caractérisé en ce que
    le logement (6) présente une conduit d'échappement (29) menant de la bride d'admission (23) jusqu'aux côtés d'échappement des soupapes (9,10).
  10. Ensemble de soupapes selon une des revendications 1 à 9,
    caractérisé en ce que
    le gradin d'échappement (30) s'étend jusqu'au à ou jusque dans la bride d'échappement (23) ou en dépassant axialement vers l'extérieur au dessus.
  11. Ensemble de soupapes selon une des revendications 1 à 10,
    caractérisé en ce que
    le logement (6) présente un côté de montage (47) avec une bride de montage, à travers laquelle les soupapes (9,10) peuvent être enfoncées dans le logement (6) et qui peut être obturé par une plaque de bride (48).
  12. Ensemble de soupapes selon une des revendications 1 à 11,
    caractérisé en ce que
    la plaque de bride (49) avec les soupapes (9,10) montées sur celle-ci et les servo-commandes (11,12) montées sur celle-ci forme une unité prémontable (51) pour actionner les soupapes (9,10).
  13. Dispositif de recyclage de gaz d'échappement d'un moteur à combustion interne, notamment dans un véhicule automobile, comportant un ensemble de soupapes (2) selon une des revendications 1 à 12, dont le logement (6) est raccordé par l'intermédiaire de la bride d'admission (22) ou par l'intermédiaire de la bride d'échappement (23) directement à un refroidisseur de recyclage de gaz d'échappement (3).
EP07728912A 2006-05-19 2007-05-09 Ensemble de soupapes pour système de recyclage des gaz d'échappement Ceased EP2018472B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006023852A DE102006023852A1 (de) 2006-05-19 2006-05-19 Ventilanordnung für eine Abgasrückführeinrichtung
PCT/EP2007/054460 WO2007134962A1 (fr) 2006-05-19 2007-05-09 Ensemble de soupapes pour système de recyclage des gaz d'échappement

Publications (2)

Publication Number Publication Date
EP2018472A1 EP2018472A1 (fr) 2009-01-28
EP2018472B1 true EP2018472B1 (fr) 2010-08-18

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Family Applications (1)

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EP07728912A Ceased EP2018472B1 (fr) 2006-05-19 2007-05-09 Ensemble de soupapes pour système de recyclage des gaz d'échappement

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Country Link
US (1) US8225773B2 (fr)
EP (1) EP2018472B1 (fr)
CN (1) CN101495743A (fr)
BR (1) BRPI0712024A2 (fr)
DE (2) DE102006023852A1 (fr)
WO (1) WO2007134962A1 (fr)

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DE102010014842B3 (de) * 2010-04-13 2011-09-22 Pierburg Gmbh Abgaskühlmodul für eine Verbrennungskraftmaschine
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JP5387612B2 (ja) * 2010-06-25 2014-01-15 マツダ株式会社 エンジンの排気還流装置
KR101016191B1 (ko) * 2010-07-08 2011-02-24 주식회사 유니크 차량용 바이패스 밸브
FR2966884B1 (fr) * 2010-10-29 2012-11-09 Renault Sa Dispositif de protection pour un volet de recirculation des gaz d'echappement
CN103348120A (zh) * 2011-02-08 2013-10-09 丰田自动车株式会社 内燃机的排气循环装置
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Also Published As

Publication number Publication date
US8225773B2 (en) 2012-07-24
DE102006023852A1 (de) 2007-11-22
DE502007004793D1 (de) 2010-09-30
CN101495743A (zh) 2009-07-29
US20100108041A1 (en) 2010-05-06
WO2007134962A1 (fr) 2007-11-29
BRPI0712024A2 (pt) 2011-12-27
EP2018472A1 (fr) 2009-01-28

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