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EP2103893B1 - Echangeur thermique pour un véhicule automobile et son procédé de fabrication - Google Patents

Echangeur thermique pour un véhicule automobile et son procédé de fabrication Download PDF

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Publication number
EP2103893B1
EP2103893B1 EP20090003804 EP09003804A EP2103893B1 EP 2103893 B1 EP2103893 B1 EP 2103893B1 EP 20090003804 EP20090003804 EP 20090003804 EP 09003804 A EP09003804 A EP 09003804A EP 2103893 B1 EP2103893 B1 EP 2103893B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tube
exchanger according
fluid
motor vehicle
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
EP20090003804
Other languages
German (de)
English (en)
Other versions
EP2103893A1 (fr
Inventor
Bernd GRÜNENWALD
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 Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 filed Critical Behr GmbH and Co KG
Publication of EP2103893A1 publication Critical patent/EP2103893A1/fr
Application granted granted Critical
Publication of EP2103893B1 publication Critical patent/EP2103893B1/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
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/162—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using bonding or sealing substances, e.g. adhesives
    • 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
    • F28D7/10—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 one within the other, e.g. concentrically
    • F28D7/106—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 one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • 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
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded

Definitions

  • the invention relates to a heat exchanger for a motor vehicle according to the preamble of claim 1 and a method for producing such a heat exchanger.
  • a heat exchanger is eg off GB 1040 284 known.
  • a fluid in the sense of the invention means any gaseous or liquid medium.
  • at least one of the fluids is an exhaust gas or compressed charge air or a mixture of exhaust gas and charge air.
  • the term heat exchanger also means a complete module, for example an exhaust module and / or intercooler module, into which further components, such as switching valves, are integrated.
  • the tube is designed as an extruded profile. Extruded profiles allow cost-effective even a complex shape. So z. B. a plurality of adjacent chambers may be provided for guiding the first fluid, whereby mechanical stability and heat transfer are improved for a given size.
  • the tube is made of aluminum alloy or unalloyed aluminum.
  • the tube can be expediently designed as a multi-chamber tube.
  • the tube may have a structuring on its outside and again alternatively or additionally on its inside.
  • the structuring is particularly advantageously designed to improve the heat transfer at a given size at least partially as extending in the longitudinal direction grooves or ribs.
  • one of the two fluids is gaseous and the other of the two fluids is liquid.
  • the gaseous fluid can at least partially consist of exhaust gas of an internal combustion engine of the motor vehicle. Alternatively or additionally, it may also consist at least partially of charge air of an internal combustion engine of the motor vehicle.
  • the gaseous fluid can have a very high temperature, which is why, in a particularly expedient embodiment of the invention, there is no contact between the gaseous fluid and sealing means, at least in the area of the heat exchanger.
  • the gaseous fluid is guided inside the tube.
  • contact of gaseous fluid and the housing material surrounding the tubes of the heat exchanger is avoided, which is particularly advantageous for critical properties of the gaseous fluid such as temperature and corrosivity.
  • the heat exchanger is designed as an I-flow heat exchanger, wherein the tube is cast with a second end in a further bottom of the heat exchanger.
  • the heat exchanger is designed as a U-flow heat exchanger.
  • the tube is cast with the first end and a second end in the ground.
  • the floor is designed as a die-cast part, based on aluminum.
  • the tube undergoes at least predominantly no heating of more than 550 ° C, in particular not more than 500 ° C in the course of pouring into the soil.
  • Such a targeted limitation of the heating can z. B. serve to prevent an unfavorable change in the crystal structure of the tubes during pouring into the soil.
  • the pipe is cooled in the course of pouring into the ground by means of a casting core and / or a casting tool.
  • a casting core can z. B. in the form of a sheath of an adjusted tube bundle by sand or similar substances, so that over the period of pouring the pipe ends sufficient cooling of the unenclosed part of the tubes or extruded profiles, is ensured.
  • It can also be an active cooling by means of a suitable design of the casting tool, z.
  • Example by the pipes are flowed through during the process of pouring into the ground of a coolant supplied via the casting tool.
  • the fluid-carrying surfaces of the tubes could be protected in this way from being heated during the casting over its entire length, so that properties due to the crystal structure, such as a good corrosion resistance to exhaust gases, are maintained.
  • the invention also relates to an intake module for an internal combustion engine of a motor vehicle, comprising a heat exchanger according to one of claims 1 to 9. More and more are found in modern intake modules Components and components integrated to optimize the operation of an internal combustion engine. Among other things, these may be cooling components for cooling the supplied gas or gas mixture.
  • An inventive heat exchanger can be at least partially poured into the intake module to a cost-effective and reliable manner an integrated unit of z.
  • the invention also relates to a method for producing a heat exchanger according to any one of claims 1 to 9 according to the features of claim 12.
  • the use of extruded profiles enables cost-effective mass production of particularly effective heat exchangers, wherein extruded sections, inter alia, for cooling of hot corrosive exhaust gas and / or are suitable for cooling the charged charge air or mixtures of exhaust gas and charge air of an internal combustion engine.
  • the first embodiment of a heat exchanger according to the invention according to Fig. 1 comprises a housing 1, which is produced by die casting from an aluminum alloy.
  • the housing 1 is shown in an open form next to a cover part 2, wherein the cover part 2 is shown in a schematic sectional view for the representation of arranged in the cover part 2 coolant channels.
  • the housing 1 has a feed 3 and a discharge 4 for a gas flow of an internal combustion engine.
  • the device or the heat exchanger according to Fig. 1 serves the cooling of a recirculated exhaust gas flow to reduce pollutants of the internal combustion engine of a motor vehicle.
  • the housing 1 has a first, inner wall section 1a and an outer, the first wall section 1a spaced circumferential wall portion 1b.
  • the inlets and outlets 3, 4 designed as connecting stubs are arranged at openings of the outer wall 1b and open into an inlet region 6 enclosed on three sides by the first, inner wall 1a.
  • a bundle of exchanger tubes 5 adjoins this inlet region 6 are each formed as aluminum extruded profiles.
  • the exchanger tubes 5 are in each case straight tube sections, which are accommodated with each of the two ends in each case in a first, inlet-side and a wall of the inlet region 6 forming bottom 5a and a second, exit-side bottom 5b.
  • the inclusion of the ends of the exchanger tubes 5 takes place during the production of the heat exchanger by pouring the prefabricated extruded profiles 5 in the housing 1.
  • the bottoms 5a, 5b are formed as integral parts of the inner housing wall 1a integral.
  • the exchanger tubes 5 can be flowed around by a liquid coolant, which is supplied and removed by means of connections 15. Between the inlet and outlet 3, 4 of the exhaust gas or first fluid of the heat exchanger, which are arranged side by side on the same side of the housing 1, the inlet region 6 is provided for the gas flow within the first wall 1a. On the other side of the bundle of exchanger tubes 5 with regard to the gas flow, a deflection region 7 is provided between the inner wall 1a and the outlet-side bottom 5b.
  • a movable actuator 9 in the form of an adjusting flap is provided on suitably designed guide structures 8. By means of this valve 9, the exhaust stream adjustable either directly from the feed 3 to the discharge 4 are passed or passing through the exchanger tubes 5.
  • a bypass operation selectable which may be desired depending on the operating condition of the engine.
  • the housing 1 is formed at least with the inner wall portion 1 a and the outer wall portion 1 b as integrally molded die-cast aluminum alloy.
  • a lower housing wall 10 of the housing 1 may also be integrally formed with the wall sections 1 a, 1 b in the die-casting process. In the plan view according to Fig. 1 Then, a one-sided demolding of the casting would be given, wherein both the gas-conducting region and the coolant-carrying region would be formed by the same casting mold side.
  • the cover part 2 which forms an upper cover of the housing 1, is made up of a total of three plate elements 2a, 2b, 2c (see FIG Fig. 2 ) composed of aluminum and are soldered flat to each other.
  • Each of the plate elements 2a, 2b, 2c has suitable openings, which serve to distribute the liquid coolant.
  • the upper plate member 2a has an opening for connecting a supply 11 for the coolant.
  • the middle plate element 2c which in the plan view in Fig. 1 is shown has channels 12, 13, 14 in which the coolant flows in the plane of the cover part 2.
  • the lower plate member 2c has openings 15, by means of which a connection of the channels 12, 13, 14 with the area around the exchanger tubes 5 and with the other coolant-carrying spaces 1c of the housing 1 between the walls 1a, 1b are produced.
  • the lid member may be formed in a simple embodiment, if it does not come into contact with the hot exhaust gas stream, made of plastic.
  • the entire coolant flows through the feed 11 and the opening in the upper plate member 2a in the channel 12 of the central plate member 2b and by a congruent opening of the lower plate member 2c in the area around the exchanger tubes 5.
  • the coolant After circulation around the exchanger tubes 5 occurs the coolant through a further opening of the lower plate member 2 c in the channel 13 of the central plate member 2 a, from which it is passed through the channels 14 in a coolant-carrying shaft 1 d of the housing 1.
  • This shaft 1 d is connected to a nozzle 16 for the discharge of the coolant from the housing 1.
  • the shaft 1d is located is in the inlet region 6 of the gas flow and is closed off on one side by the outer wall 1b in the immediate vicinity of the feed 3 and outlet 4 of the gas flow. In this way, this temperature-critical region of the wall 1 b is cooled.
  • the partial flow of the channel 12 of the central plate element 2b is passed through an opening 15 of the lower plate member 2c in a circumferential portion 1c surrounding the majority of the housing 1, so that the largest possible part of the contacting with the gas flow wall portion 1a is cooled by the coolant ,
  • this partial flow is also supplied to the part 1 d, so that the entire coolant leaves the housing 1 via the discharge connection 16.
  • the exchanger tubes 5 are each bent in a U-shape and open with their beginning and their end in each case in the same bottom 5a, in which they are firmly cast during the production of the heat exchanger.
  • a U-flow heat exchanger is formed, but only a single bottom 5a is required and the second bottom 5b and the reverse portion 7 omitted.
  • a larger area within the wall 1a can be filled by the gas-carrying and coolant-circulated exchanger tubes 5.
  • Fig. 6 shows a spatial representation of a portion of another embodiment of a heat exchanger according to the invention, in which an inner portion 102 of an extruded profile 101 is formed for the guidance of exhaust gas and elongated, rib-like structures 103 to increase the heat transfer.
  • This inner tube region of the extruded profile 101 is connected via web-like structures 104 to a housing tube 105, wherein longitudinal chambers 106 remain between outer tube 105 and inner region 102, in which a liquid coolant is conducted to dissipate the heat of the exhaust gas.
  • Such an integrally one-piece extruded profile with channels for guiding exhaust gas as well as for the guidance of liquid coolant requires a connection to the two fluids.
  • a connection can be applied to the extruded profile in the die casting process, so that the extruded profile is cast in a housing in the sense of the invention.
  • Fig. 7 shows a first embodiment of an intake module according to the invention with a heat exchanger according to the invention integrated therein.
  • Shown is a schematic view of an internal combustion engine 201 to which an intake module 202 for supplying air or combustion mixture is flanged on the inlet side.
  • the intake module 202 is largely formed as an aluminum die-cast part. It has a throttle valve 203, which is arranged in a feed channel 204, in which a charge air cooler 205 is located.
  • the intercooler 205 has a plurality of exchanger tubes 206 received between an entrance side floor 207 and an exit side floor 208. This recording can, for the purposes of the invention by pouring z.
  • the intercooler is constructed so that the pipes are traversed by the liquid coolant and flows around on the outside of the compressed charge air or a mixture of compressed charge air and exhaust gas.
  • the tubes then preferably have a structured outer surface in the form of ribs, webs, dimples, winglets or the like.
  • the heat exchanger may be formed as described above as an I-flow or U-flow heat exchanger.
  • this outer structure of the tubes is plugged in the form of corrugated ribs.
  • the intercooler 205 has ports 209 for supplying and discharging a liquid refrigerant from which the exchanger tubes 206 are flowed around to remove the heat of the compressed charge air.
  • a module comprising a heat exchanger according to the invention for supplying recirculated and selectably cooled exhaust gas is provided on the intake module 202.
  • the exhaust gas is branched off from an exhaust pipe 210 and fed to a housing region 211.
  • an actuator 212 is provided in the manner of a linear slide, by means of which the recirculated exhaust gas, depending on the operating state, cooled either without cooling via a bypass line 213 or through a heat exchanger 214 according to the invention to the further intake module 202 and the internal combustion engine 201 can be supplied.
  • the heat exchanger 214 according to the invention comprises a bundle of exchanger tubes 215 in the form of extruded profiles, which are cast in a first bottom 216 and a second bottom 217.
  • the floors 216 and 217 are simply formed as wall sections of the housing portion 211 of the intake module 202.
  • a cover 218 is placed using sealing means in such a way that a circulation of the exchanger tubes 215 with the coolant can take place by means of inlets and outlets 219 for liquid coolant provided in particular in the cover.
  • the lid may be made of metal, e.g. Die-cast aluminum, or be formed in a simple embodiment of plastic.
  • Fig. 8 shows a modification of the embodiment according to Fig. 7 , Wherein the exhaust gas flowed through exchanger tubes 215 are not straight, but are formed as bent portions.
  • the tubes 215 each form 90 ° -Kreissektoren. In principle, however, depending on the design of the housing and the space available, they can be shaped and have a plurality of bends or complex courses.
  • a suction according to the invention according to Fig. 9 be in contrast to the embodiments after Fig. 7 and Fig. 8 formed as extruded exchanger tubes 215 does not flow through the exhaust gas, but by the liquid coolant.
  • the tubes U-shaped bent in the present example 215 are cast with their ends in an outer wall 220 of the intake module, so that they open with both ends in the outer space.
  • connections 222 can be formed for the supply and discharge of coolant.
  • the coolant-carrying curved tubes 215 are in their course within the exhaust gas-carrying housing portion 211, so that they are flowed around with a corresponding position of the slider 212 of exhaust gas, which emits its heat corresponding to the flowing in the tubes coolant.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (12)

  1. échangeur de chaleur pour une véhicule automobile, comprenant au moins un tube (5) servant au guidage d'un premier fluide et un carter (1) entourant le tube (5) et servant au guidage d'un deuxième fluide, où le deuxième fluide baigne les tubes (5) pour l'échange de chaleur avec le premier fluide, où le tube (5) est fixé sur un fond (5a, 5b), par au moins une première extrémité, en étant étanche au fluide,
    caractérisé en ce que l'extrémité du tube (5) fixée sur le fond (5a, 5b) est scellés dans le fond (5a, 5b) par coulée sous pression de l'aluminium, ou le tube (5) est configuré comme un profilé filé et le tube (5) se compose d'un alliage d'aluminium ou d'aluminium non allié.
  2. Echangeur de chaleur selon l'une ou l'autre des revendications précédentes, caractérisé en ce que le tube (5) est configuré comme un tube (5c) à chambres multiples.
  3. échangeur de chaleur, selon l'une ou l'autre des revendications précédentes, caractérisé en ce que le tube (5) présenté une structuration sur son côté extérieur et / ou son côté intérieur.
  4. Echangeur de chaleur selon la revendication 3, caractérisé en ce que la structuration est configurée au moins partiellement comme des cannelures s'étendant dans le sens de la longueur.
  5. échangeur de chaleur selon la revendication 3 ou 4, caractérisé en ce que la structuration est configurée comme des winglets ou ailette rapportées et / ou des ondulations et / ou comme une torsade du tube (5).
  6. Echangeur de chaleur selon l'une quelconque des revendications précédents, caractérisé en ce que, a cours de l'utilisation de l'échangeur de chaleur, l'un des deux fluides est gazeux, l'autre fluide étant liquidé.
  7. Echangeur de chaleur selon la revendication 6, caractérisé en ce que le fluide gazeux se compose au moins partiellement de gaz d'échappement d'un monteur à combustion interne du véhicule automobile.
  8. Echangeur de chaleur selon la revendication 6 ou 7, caractérisé en ce que le fluide gazeux se compose au moins partiellement d'air de suralimentation d'un moteur à combustion interne (201) du véhicule automobile.
  9. Echangeur de chaleur selon l'une des revendications 7 ou 8, caractérisé en ce que le fluide gazeux ne présenté, au moins dans la zone de l'échangeur de chaleur, aucun contact avec des moyens d'étanchéité.
  10. Module d'admission pour un moteur à combustion interne d'un véhicule automobile, comprenant un échanger de chaleur selon l'une quelconque des revendication 1 à 9.
  11. Module d'admission selon la revendications 10, caractérisé en ce que l'échangeur de chaleur est scellé au moins partiellement dans le module d'admission (202).
  12. Procédé de fabrication d'un échangeur de chaleur selon l'une quelconque des revendications 1 à 9, comprenant les étapes consistant :
    à fabriquer le tube (5) comme un profilé filmé ;
    à intégrer le tube (5) en procédant par scellement dans un fond (5a, 5b) de l'échangeur de chaleur, par coulée sous pression de l'aluminium.
EP20090003804 2008-03-17 2009-03-17 Echangeur thermique pour un véhicule automobile et son procédé de fabrication Not-in-force EP2103893B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810014376 DE102008014376A1 (de) 2008-03-17 2008-03-17 Wärmetauscher für ein Kraftfahrzeug und Verfahren zu seiner Herstellung

Publications (2)

Publication Number Publication Date
EP2103893A1 EP2103893A1 (fr) 2009-09-23
EP2103893B1 true EP2103893B1 (fr) 2012-05-16

Family

ID=40786857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090003804 Not-in-force EP2103893B1 (fr) 2008-03-17 2009-03-17 Echangeur thermique pour un véhicule automobile et son procédé de fabrication

Country Status (2)

Country Link
EP (1) EP2103893B1 (fr)
DE (1) DE102008014376A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108180676A (zh) * 2018-01-12 2018-06-19 中山市吉成五金制品有限公司 不锈钢管铸铝热交换器
CN113310330B (zh) * 2021-06-04 2022-11-25 重庆中创鼎新智能化节能技术有限公司 双层螺旋纽带及双层扰流装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1040284A (en) * 1963-05-31 1966-08-24 David Lloyd Roach Heat exchangers
DE3223496C2 (de) * 1982-06-24 1985-08-08 Daimler-Benz Ag, 7000 Stuttgart Durch eine Gehäusewandung hindurchgeführtes Wärmerohr
EP0941759A1 (fr) * 1998-03-12 1999-09-15 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Echangeur et son procédé de fabrication
JP3991786B2 (ja) * 2002-06-28 2007-10-17 株式会社デンソー 排気熱交換装置
DE10254797B4 (de) * 2002-11-22 2004-11-18 GEA Luftkühler GmbH Wärmeaustauscher
DE10349140A1 (de) * 2003-10-17 2005-05-12 Behr Gmbh & Co Kg Wärmeübertrager, insbesondere für Kraftfahrzeuge
DE102005054731A1 (de) * 2005-11-17 2007-05-24 Handtmann Systemtechnik Gmbh & Co. Kg Abgaswärmetauscher
RU2411390C2 (ru) * 2006-01-23 2011-02-10 Бер Гмбх Унд Ко. Кг Теплообменник
DE102006031606A1 (de) * 2006-07-06 2008-01-17 Behr Gmbh & Co. Kg Wärmetauscher zur Abgaskühlung, Verfahren zur Herstellung eines Wärmetauschers

Also Published As

Publication number Publication date
DE102008014376A1 (de) 2009-09-24
EP2103893A1 (fr) 2009-09-23

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