EP2123895A1 - Refroidisseur de gaz d'échappement - Google Patents

Refroidisseur de gaz d'échappement Download PDF

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Publication number
EP2123895A1
EP2123895A1 EP09005739A EP09005739A EP2123895A1 EP 2123895 A1 EP2123895 A1 EP 2123895A1 EP 09005739 A EP09005739 A EP 09005739A EP 09005739 A EP09005739 A EP 09005739A EP 2123895 A1 EP2123895 A1 EP 2123895A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
channel
cooling
deflection
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.)
Withdrawn
Application number
EP09005739A
Other languages
German (de)
English (en)
Inventor
Christoph Lempa
Andreas Roth
Christian Smatloch
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik 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 Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP2123895A1 publication Critical patent/EP2123895A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • F28D7/16—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 being arranged in parallel spaced relation
    • F28D7/163—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 being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1653—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 being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
    • F28D7/1661—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 being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • 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
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • 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
    • 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

Definitions

  • the invention relates to an exhaust gas cooler, which has a housing with a bypass channel and with a cooling region in which an exhaust gas cooling channel is arranged, wherein the housing has at least one adjusting element for controlling the exhaust gas flow either through the bypass channel or through the cooling region, and wherein the housing has a Has exhaust inlet region and an exhaust gas outlet region.
  • Such exhaust gas coolers are used, for example, in exhaust gas recirculation systems of internal combustion engines.
  • the cooled exhaust gas recirculation reduces the emission of nitrogen oxides by reducing the combustion temperature in the cylinders, for example of diesel engines.
  • a controlled by an exhaust gas recirculation valve exhaust gas is passed through the exhaust gas cooler after the combustion process. Subsequently, the exhaust gas is supplied to the fresh air required for the combustion process.
  • the addition of exhaust gas to the fresh air lowers the oxygen concentration in the cylinders and thus the combustion temperature.
  • the cooling of the exhaust gases enhances this effect.
  • the exhaust gas is conducted past the cooling region or the exhaust gas cooling channel by the actuator releases the bypass channel.
  • exhaust gas coolers or exhaust gas recirculation coolers are known e.g. designed in the I-type and, for example, in the U-type, and have only a limited cooling capacity.
  • the inlet region is arranged on an end face of the exhaust gas cooler, wherein, viewed in the axial direction, the outlet region is arranged on an outlet front side opposite the inlet end side.
  • the bypass channel runs in the axial direction over its entire longitudinal extent parallel to the cooling region or to the exhaust gas cooling channel.
  • the cooling region or the exhaust gas cooling channel extends axially from the inlet side to the outlet side.
  • the bypass channel is arranged substantially perpendicular to the cooling region or to the exhaust gas cooling channel, wherein the exhaust gas cooling channel or the exhaust gas flow has a U-shaped course within the housing or the cooling region.
  • the invention has for its object an exhaust gas cooler, in particular to provide an exhaust gas cooler for cooling recirculated exhaust gases, in which the cooling capacity is improved considerably with simple means.
  • an exhaust gas cooler with the features of claim 1, wherein the exhaust gas cooling channel comprises an inlet cooling channel, at least one subsequent to the inlet cooling channel deflection channel and an adjoining the deflection channel outlet cooling channel, wherein the exhaust gas flow in the deflection respectively opposite to the flow direction of Exhaust gases flows on the one hand in the inlet cooling channel and on the other in the outlet cooling channel, and wherein the bypass channel is separated from a deflection region of the deflection channel by means of separating means.
  • an exhaust gas cooler is advantageously provided, in which the cooling capacity is increased because the exhaust gas flow is passed several times, in particular more than twice, preferably four times through the cooling region of the housing when the bypass channel is closed via the control element.
  • an exhaust gas cooling passage is the route of the exhaust gases through the cooling area.
  • the exhaust gas stream enters the inlet cooling passage via the exhaust gas inlet region and flows in a first plane toward a closed end side of the exhaust gas cooler.
  • the exhaust gas flow is directed towards the deflection channel or in the direction of a first section of the deflection channel, in which the exhaust gas flow flows opposite to the flow direction in the inlet cooling channel in the direction of the deflection region.
  • the exhaust gas stream is preferably diverted in a vertical direction or a second plane of the exhaust gas cooler perpendicular to the first plane.
  • the exhaust gas stream flowing in from the first section of the deflection channel is deflected in a direction transverse to or parallel to the first plane of the exhaust gas cooler in the direction of a second section of the deflection channel.
  • the exhaust gases flow in the same manner as in the inlet cooling channel towards the closed end side, and are seen here in the vertical direction, deflected in the second plane to the outlet cooling channel.
  • the exit cooling channel the exhaust gases flow in the direction opposite to the flow direction of the exhaust gases in the second section in the direction of the exit region, and exit from the exhaust gas cooler in cooled fashion.
  • the exhaust gas flow to be cooled is accordingly conducted at least four times through the cooling region of the housing, as a result of which the cooling power of the exhaust gas cooler or of the exhaust gas cooler for cooling recirculated exhaust gases is considerably increased.
  • a further deflection channel may be provided, so that the exhaust gases flow through the cooling area more than four times.
  • the respective sections of the deflection channel extend parallel to one to the inlet cooling channel and the other to the outlet cooling channel.
  • the deflection channel with its respective sections seen in the vertical direction of the exhaust gas cooler, is arranged in each case below the inlet cooling channel or the outlet cooling channel.
  • the third plane defined by the sections of the deflection channel runs parallel to the first plane determined by the position of the inlet cooling channel and outlet cooling channel.
  • both the inlet cooling channel, the outlet cooling channel and at least the two sections of the deflection channel are surrounded by coolant.
  • a coolant flow may also be provided.
  • the separating means is preferably designed as a partition, which is arranged in the vertical direction of the exhaust gas cooler between the bypass channel and the deflection region.
  • the partition preferably extends in the transverse direction over the entire width of the housing from the exhaust gas inlet region in the direction of the exhaust gas outlet region.
  • the adjusting element is arranged both in the bypass and in the deflection, so is advantageously designed as a double flap element.
  • the actuator is expediently designed with two flap elements which are arranged on a common flap axis so that the deflection region is open when the bypass channel is closed. This causes an exhaust gas flow through the cooling area of the exhaust gas cooler.
  • the deflection region is closed with the bypass channel open by means of the flap element, so that the exhaust gases can flow only through the bypass channel and not through the cooling region.
  • the flap elements are favorably arranged with their inflow surfaces each offset by 90 ° to the common flap axis.
  • valve element arranged in the deflection region can be dispensed with.
  • the adjusting element is arranged only in the bypass channel, that is designed as a single flap element, so that an exhaust gas flow through the cooling area is prevented when the bypass channel is open.
  • the bypass duct is closed, an exhaust gas flow through the cooling area is achieved.
  • the control element or its flap element can be circular or quadrangular, without limiting the possible embodiments thereof.
  • the flap axis can run centrally through the flap element.
  • the flap element can be pivoted so that a passage in the bypass channel is opened or closed.
  • the optionally arranged in the deflection flap element is pivoted accordingly.
  • the passage both in the bypass channel and in the deflection region advantageously has a sealing wall adapted to the flap element, against which the flap element bears sufficiently tightly in the closed position.
  • the valve axis may be installed off-center.
  • the flap axis can either be arranged on the cooling area side or opposite to an outer edge of the flap element, so that the entire inflow surface of the flap element can be pivoted out of the respective passage or into it in a sealing manner.
  • the flap axis can also run centrally through the flap element, wherein a central course is advantageous in that the flap element is balanced, so in each case the flap axis is uniformly flowed on both sides.
  • FIG. 1 shows an exhaust gas cooler 1 according to the prior art in the so-called I-type.
  • the exhaust gas cooler 1 has a housing 2 with an inlet side 3 and an outlet side 4 opposite thereto. At the inlet side 3, exhaust gases enter the housing 2 through an exhaust gas inlet region 5.
  • a pivotable about the axis 11 adjusting element 6 is arranged, which directs the incoming exhaust gas flow either to a bypass channel 7 or to a cooling region 8 of the exhaust gas cooler 1.
  • an exhaust gas cooling channel 9 is arranged, which extends from the inlet region 5 in the direction of an exhaust gas outlet region 10 or which extends in the direction of the outlet side 4.
  • the bypass channel 7 runs parallel to the cooling region 8 or to the exhaust gas cooling channel 9.
  • FIG. 2 an exhaust gas cooler 12 in the so-called U-construction with a cassette-like housing 13 is shown.
  • the exhaust gas cooler 12 has a U-shaped profile of the exhaust gas cooling channel 9 through the cooling region 8 (FIG. FIG. 3 ).
  • the bypass channel 7 is arranged at the front, wherein the adjusting element 6 is arranged in the bypass channel 7.
  • FIG. 4 shows an exhaust gas cooler 14 according to the invention.
  • the exhaust gas cooler 14 has a housing 15 with a bypass channel 16 and a cooling area 17.
  • an exhaust gas cooling channel 18 is arranged ( FIG. 5 ), which is flowed around by coolant.
  • the coolant flows in individual cooling tubes 42.
  • An exhaust gas cooling channel in the sense of the invention is the path of the exhaust gas flow (arrow 24) through the cooling region or through the exhaust gas cooler.
  • the housing 15, which is designed like a cassette in the illustrated embodiment, has a front side 19 and an opposite end side 20.
  • Front side of the bypass channel 16 is arranged, wherein also an exhaust inlet region 21 and an exhaust gas outlet region 22 is arranged at the front.
  • the exhaust gas inlet region 21 opens into the bypass duct 16, wherein the exhaust gas outlet region 22 is arranged, for example, opposite the exhaust gas inlet region 21.
  • an actuating element 23 is arranged on the front side, which controls the exhaust gas flow (arrow 24) so that it flows either through the cooling region 17 or the exhaust gas cooling channel 18 or through the bypass channel 16. If the adjusting element 23 is positioned such that the bypass channel 16 is open, the exhaust gases flow without flowing through the cooling region 17 into the exhaust gas inlet region 21, pass through the bypass channel 16 and flow out of the exhaust gas cooler 14 out of the exhaust gas outlet region 22.
  • the actuator 23 is positioned so that the bypass channel 16 is closed, as an example FIG. 4 1, the exhaust gases entering the exhaust gas inlet region 21 flow into the exhaust gas cooler 14 and flow through the cooling region 17.
  • the cooling region 17 or its exhaust gas cooling channel 18 is designed so that the exhaust gas cooling channel 18 an inlet cooling channel 25, at least one of the Admission cooling channel 25 subsequent deflection channel 26 and an adjoining the deflection channel 26 outlet cooling channel 27 has.
  • the exhaust gas flow in the deflection channel 26 in each case opposite to the flow direction of the exhaust gases to one in the inlet cooling channel 25 and the other in the outlet cooling channel 27. This is principally in FIG. 5 shown.
  • the bypass channel 16 is separated by means of separating means 28 from a front-side deflection region 29 of the deflection channel 26 ( FIG. 4 ).
  • FIG. 5 can be removed in principle, the exhaust gases flow through a clever deflection within the cooling area 17 exemplarily four times through this, whereby the cooling performance of the exhaust gas cooler, for example, compared to the exhaust gas cooler 12 in accordance FIG. 2 is significantly improved with the same outer geometry.
  • the exhaust gases flow in a first plane E1 via the exhaust gas inlet region 21 into the inlet cooling channel 25 and flow toward the end side 20.
  • the exhaust gases in the direction of the deflection channel 26 and to a first portion 30 of the Umlenkkanals 26th directed.
  • the exhaust gas flow in a second plane E2 seen in a vertical direction Y is diverted downward (arrow 43), and thus passes into a first portion 30 of the Umlenkkanals 26, which preferably parallel to the inlet cooling channel 25, but below this in a third plane E3 runs.
  • the exhaust gases flow in the direction opposite to the flow direction in the inlet cooling channel 25 in the direction of the front deflection region 29.
  • the exhaust gases are deflected in a transverse direction X of the third plane E3 and enter a subsequent to the first section 30 second section 31 of the deflection channel 26 a.
  • the exhaust gases flow in the direction of the end side 20, ie the same oriented to the flow direction in the inlet cooling channel 25 end of the exhaust gases are seen in the vertical direction Y, in the second plane E2 upwardly deflected (arrow 44) and occur in the exit cooling channel 27 a.
  • the exhaust gases flow in the first plane E1 in the direction to the front side 20, ie opposite to the flow direction in the second section 31 of the deflection channel 26 but oriented the same direction to the flow direction in the first portion 30 of the Umlenkkanals 26th
  • the separating means 28 is preferably designed as a partition wall, which, seen in the transverse direction X, extends continuously from the exhaust gas inlet region 21 in the direction of the exhaust gas outlet region 22 between the bypass duct 16 and the front deflection region 29 ( FIG. 4 ).
  • the front side 19 is seen in the vertical direction Y quasi halved.
  • the upper half in the plane of the drawing represents, as it were, the bypass channel 16, while the lower half in the plane of the drawing is more or less the deflection region 29, which are preferably separated from one another in a gastight manner.
  • This exemplary division can also be reversed, so that the lower half of the bypass channel 16 and the upper half corresponding to the deflection region 29.
  • the separating means 28 or the partition may also be arranged eccentrically, ie in the vertical direction Y both downwards and upwards.
  • the actuator 23 is designed as a double flap element 32.
  • the double-flap element 32 has a flap element 16 and a flap element 33 or 34 assigned to the deflection region 29.
  • Both flap elements 33 and 34 are designed as an example circular, and have a common flap axis 35.
  • the flap axis 35 is preferably centered in both flap elements 33 and 34 and mounted on the housing 15 so that the flap elements 33 and 34 can be pivoted into an opening and a closing position.
  • the two flap elements 33 and 34 are arranged with their inflow surfaces 36 offset by 90 ° to each other.
  • the bypass channel 16 can be closed, so that the exhaust gases flow through the cooling area, while at the same time the deflection region 29 is open ( FIG. 4 ).
  • the bypass channel 16 by means of the top plane in the plane of the drawing element 33, so that the exhaust gases can flow through the bypass channel 16, wherein the deflection region 29 is closed.
  • the respective flap elements 33 and 34 are in their closed position sufficiently close to corresponding sealing walls 37, which release a passage when the respective flap elements 33 or 34 are not present.
  • the exhaust gas cooler 14 according to the embodiment to FIG. 6 an actuator 23, which is designed as a single flap element 38.
  • Whose flap axis 39 is mounted both in the housing 15 and in the release agent 28 and in the partition.
  • the originally arranged in the deflection region 29 flap element omitted. Otherwise corresponds to the exhaust gas cooler 14 according to the embodiment according to FIG. 6 according to the embodiment FIG. 4 ,
  • the actuator 23 is designed as a single flap element 40 with quadrangular configuration.
  • Whose flap axis 41 is preferably arranged asde Schl.
  • the single flap element 40 By pivoting the single flap element 40 by 90 ° from the in FIG. 7 shown position of the bypass is opened and at the same time the cooling area preferably completely closed, wherein the single flap element 40 favorably has a correspondingly adapted flap geometry.
  • the flap axis 41 may also be arranged opposite thereto on an outside or in the middle.

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  • 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)
  • Geometry (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Gas After Treatment (AREA)
EP09005739A 2008-05-21 2009-04-24 Refroidisseur de gaz d'échappement Withdrawn EP2123895A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008024569A DE102008024569A1 (de) 2008-05-21 2008-05-21 Abgaskühler

Publications (1)

Publication Number Publication Date
EP2123895A1 true EP2123895A1 (fr) 2009-11-25

Family

ID=41010776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09005739A Withdrawn EP2123895A1 (fr) 2008-05-21 2009-04-24 Refroidisseur de gaz d'échappement

Country Status (3)

Country Link
US (1) US8261814B2 (fr)
EP (1) EP2123895A1 (fr)
DE (1) DE102008024569A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2989998A1 (fr) * 2012-04-26 2013-11-01 Faurecia Sys Echappement Dispositif de recuperation de chaleur pour ligne d'echappement
EP2518300B1 (fr) * 2011-04-06 2020-08-26 Pierburg GmbH Module de refroidissement de recirculation de gaz d'échappement

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Publication number Priority date Publication date Assignee Title
DE102010005761A1 (de) 2010-01-25 2011-07-28 Benteler Automobiltechnik GmbH, 33102 Abgasbaugruppe
DE102010005803A1 (de) * 2010-01-27 2011-07-28 Audi Ag, 85057 Kraftwagen mit einer Abgasanlage
EP2381083A1 (fr) * 2010-04-22 2011-10-26 C.R.F. Società Consortile per Azioni Unité pour la récuperation et la conversion d'énergie thermique des gaz d'échappement
FR2966873B1 (fr) * 2010-10-27 2012-12-21 Faurecia Sys Echappement Dispositif de recuperation de chaleur pour ligne d'echappement
DE102012106782A1 (de) 2012-07-26 2014-01-30 Halla Visteon Climate Control Corporation Wärmeübertrager zur Abgaskühlung in Kraftfahrzeugen
WO2015038111A1 (fr) * 2013-09-11 2015-03-19 International Engine Intellectual Property Company, Llc Écran thermique pour un refroidisseur de recirculation de gaz d'échappement (egr)
DE102017130153B4 (de) 2017-12-15 2022-12-29 Hanon Systems Vorrichtung zur Wärmeübertragung und Verfahren zum Herstellen der Vorrichtung

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EP0864830A1 (fr) * 1997-03-14 1998-09-16 Deutsche Babcock-Borsig Aktiengesellschaft Echangeur de chaleur à faisceau de tubes en U
EP1336736A2 (fr) * 2002-02-14 2003-08-20 Delphi Technologies, Inc. Refroidisseur pour un moteur
WO2007060172A1 (fr) * 2005-11-22 2007-05-31 Dayco Ensa, S.L. Echangeur de chaleur a trois passes pour systeme de recirculation de gaz d'echappement
WO2007104595A1 (fr) * 2006-03-16 2007-09-20 Pierburg Gmbh Unite de transfert thermique

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Publication number Priority date Publication date Assignee Title
EP0864830A1 (fr) * 1997-03-14 1998-09-16 Deutsche Babcock-Borsig Aktiengesellschaft Echangeur de chaleur à faisceau de tubes en U
EP1336736A2 (fr) * 2002-02-14 2003-08-20 Delphi Technologies, Inc. Refroidisseur pour un moteur
WO2007060172A1 (fr) * 2005-11-22 2007-05-31 Dayco Ensa, S.L. Echangeur de chaleur a trois passes pour systeme de recirculation de gaz d'echappement
WO2007104595A1 (fr) * 2006-03-16 2007-09-20 Pierburg Gmbh Unite de transfert thermique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2518300B1 (fr) * 2011-04-06 2020-08-26 Pierburg GmbH Module de refroidissement de recirculation de gaz d'échappement
FR2989998A1 (fr) * 2012-04-26 2013-11-01 Faurecia Sys Echappement Dispositif de recuperation de chaleur pour ligne d'echappement

Also Published As

Publication number Publication date
US8261814B2 (en) 2012-09-11
DE102008024569A1 (de) 2009-12-10
US20090288404A1 (en) 2009-11-26

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