US20140000848A1 - Exhaust-gas heat exchanger - Google Patents

Exhaust-gas heat exchanger Download PDF

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Publication number
US20140000848A1
US20140000848A1 US13/930,175 US201313930175A US2014000848A1 US 20140000848 A1 US20140000848 A1 US 20140000848A1 US 201313930175 A US201313930175 A US 201313930175A US 2014000848 A1 US2014000848 A1 US 2014000848A1
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United States
Prior art keywords
exhaust
heat exchanger
gas heat
housing
fluid
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.)
Abandoned
Application number
US13/930,175
Inventor
Albrecht Siegel
Christian Faber
Simon Hund
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
Assigned to BEHR GMBH & CO. KG reassignment BEHR GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FABER, CHRISTIAN, HUND, Simon, SIEGEL, ALBRECHT
Publication of US20140000848A1 publication Critical patent/US20140000848A1/en
Priority to US14/808,249 priority Critical patent/US20150328726A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • 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
    • 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
    • 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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49362—Tube wound about tube

Definitions

  • An exhaust-gas heat exchanger in particular for use in the exhaust tract of a motor vehicle, having a housing and having a first flow duct through which a first fluid can flow and which is received at its end regions in tube plates, wherein the first flow duct and the tube plates are surrounded by the housing in such a way that the housing forms a second flow duct through which a second fluid can flow, which second fluid can flow around the first flow duct, having a first diffuser which conducts the first fluid into the first flow duct and having a second diffuser which conducts the first fluid out of the first flow duct.
  • Exhaust-gas heat exchangers are preferably used in motor vehicles, where they are arranged downstream of the internal combustion engine.
  • the hot exhaust gas discharged by the internal combustion engine is cooled in said exhaust-gas heat exchangers and can be supplied back to the internal combustion engine by means of exhaust-gas recirculation. This serves to reduce the pollutant content in the exhaust gas.
  • Exhaust-gas heat exchangers which have a tube bundle with exhaust-gas tubes, said tube bundle being surrounded by a housing through which a coolant flows.
  • the heat of the exhaust gas is dissipated to the coolant.
  • the coolant passes through a coolant inlet into the interior of the housing and, after flowing around the tube bundle, exits the exhaust-gas heat exchanger via a coolant outlet likewise formed on the housing.
  • the exhaust gas flows into the tube bundle via an inlet diffuser and flows out of the tube bundle via an outlet diffuser.
  • the inflow lines and outflow lines of the heat exchanger have flanges.
  • the required flanges are generated directly on the respective components either through the use of injection molding or pressure casting processes or, if the use of such methods is not possible, through the additional attachment of flanges.
  • the flanges which are for example attached to the housing of the heat exchanger itself or to the diffuser of the heat exchanger, are brazed or welded to the heat exchanger as additional components.
  • a disadvantage of the prior art is in particular the fact that the flange constitutes an additional component, resulting in increased costs for parts. Furthermore, the joining of the flange to the heat exchanger constitutes an additional process step which increases the machining time and entails additional costs.
  • the problem addressed by the present invention is therefore that of providing an exhaust-gas heat exchanger which has one or more flanges formed in one piece with the exhaust-gas heat exchanger.
  • an exhaust-gas heat exchanger in particular for use in the exhaust tract of a motor vehicle, having a housing and having a first flow duct through which a first fluid can flow and which is received at its end regions in tube plates, wherein the first flow duct and the tube plates are surrounded by the housing in such a way that the housing forms a second flow duct through which a second fluid can flow, which second fluid can flow around the first flow duct, having a first diffuser which conducts the first fluid into the first flow duct and having a second diffuser which conducts the first fluid out of the first flow duct, wherein the exhaust-gas heat exchanger has, at at least one of its end regions, an at least partially encircling first flange which is formed in one piece with the exhaust-gas heat exchanger.
  • first flange prefferably be formed by roller-burnishing or deep-drawing or forging or embossing or internal high pressure forming.
  • a flange can be formed on the housing or on the diffuser in a particularly advantageous manner using one of said methods. It is advantageous here that the flange is formed out of the material of the housing or of the diffuser itself.
  • the housing and/or one of the diffusers prefferably have a first flange.
  • the arrangement of the flange on the housing itself or on the diffusers connected to the housing is advantageous because those components of the exhaust-gas heat exchanger which are positioned upstream or downstream can be connected directly to the exhaust-gas heat exchanger in this way.
  • housing and/or the first flange and/or the diffuser prefferably be formed from steel.
  • the housing and in particular the diffusers are formed from a heat-resistant material.
  • the high exhaust-gas temperatures could otherwise lead to permanent deformation or to failure of individual components.
  • the housing prefferably be formed from aluminum and for the diffuser and/or the first flange to be formed from steel.
  • a configuration in which the housing is formed from aluminum and the diffusers and/or the flange are/is formed from steel can have an advantageous effect on the component weight. If the exhaust-gas temperatures permit the use of aluminum as a housing material, the component can be configured in a particularly advantageous manner.
  • first flange prefferably has a thread
  • FIG. 1 is a perspective view of an exhaust-gas heat exchanger.
  • FIG. 1 shows a perspective view of an exhaust-gas heat exchanger 1 .
  • the exhaust-gas heat exchanger 1 is composed substantially of a housing 3 which, in the interior, has a multiplicity of flow ducts which, in their end regions, are received in tube plates. The tube plates and the flow ducts cannot be seen in FIG. 1 owing to the perspective view.
  • the housing 3 surrounds the tube plates in such a way that a second flow duct is formed which is separated from the flow ducts enclosed in the tube plates.
  • a fluid can flow into the housing via the fluid inlet 2 and can flow through said housing.
  • the fluid outlet through which the fluid can exit the housing 3 again.
  • a further fluid preferably the exhaust gas in an exhaust tract, flows through the exhaust-gas heat exchanger 1 along the flow ducts enclosed in the tube plates.
  • a second fluid flows through said exhaust-gas heat exchanger through the fluid inlet 2 and the fluid outlet (not shown), wherein the second fluid flows around the flow ducts, and heat is thus dissipated from the hot medium flowing in the flow ducts.
  • a diffuser 5 is connected to one side of the housing 3 .
  • the first fluid flows through said diffuser either before or after flowing through the housing 3 , depending on the flow direction of the first fluid.
  • a second diffuser may also be arranged on the opposite end of the housing.
  • the shape of the diffusers 5 may likewise deviate from the cylindrical shape shown here, and may for example have a conical shape.
  • an encircling flange 4 Illustrated on the outer radius of the housing 3 is an encircling flange 4 .
  • Said flange 4 is formed in one piece with the housing 3 . This is possible for example through the use of the machining processes roller-burnishing, deep-drawing, forging, embossing or internal high pressure forming.
  • a flange 4 may be arranged on one or both of the diffusers 5 .
  • flange 4 integrated directly in the housing 3 or in a diffuser 5 , it is possible for components positioned upstream or downstream, which components are arranged upstream of the exhaust-gas heat exchanger 1 or downstream thereof in the exhaust tract, to be connected directly to the exhaust-gas heat exchanger 1 .
  • connection may be realized for example by means of tube clamps.
  • the flange 4 may furthermore have a thread. By means of said thread, components can be connected directly to the exhaust-gas heat exchanger 1 .
  • the flange 4 may also be formed as an only partially encircling flange.
  • the exhaust-gas heat exchanger 1 Since the exhaust-gas heat exchanger 1 is subjected to high temperatures owing to the throughflow of an exhaust gas from an internal combustion engine, it is necessary for the diffusers 5 and the housing 3 to be manufactured from a material which exhibits adequately high heat resistance.
  • the exhaust-gas heat exchanger 1 is manufactured partially or entirely from steel. It is by all means conceivable for only individual components to be manufactured from steel, in particular those components which are subjected to the highest temperatures, and for other components to be formed for example from more lightweight materials such as for example aluminum.
  • the deciding factor is the temperature level that the component will be subjected to later in normal operation.

Abstract

An exhaust-gas heat exchange, in particular for use in the exhaust tract of a motor vehicle, having a housing and having a first flow duct through which a first fluid can flow and which is received at its end regions in tube plates, wherein the first flow duct and the tube plates are surrounded by the housing in such a way that the housing forms a second flow duct through which a second fluid can flow, which second fluid can flow around the first flow duct, having a first diffuser which conducts the first fluid into the first flow duct and having a second diffuser which conducts the first fluid out of the first flow duct, characterized in that the exhaust-gas heat exchanger has, at at least one of its end regions, an at least partially encircling first flange which is formed in one piece with the exhaust-gas heat exchanger.

Description

    TECHNICAL FIELD
  • An exhaust-gas heat exchanger, in particular for use in the exhaust tract of a motor vehicle, having a housing and having a first flow duct through which a first fluid can flow and which is received at its end regions in tube plates, wherein the first flow duct and the tube plates are surrounded by the housing in such a way that the housing forms a second flow duct through which a second fluid can flow, which second fluid can flow around the first flow duct, having a first diffuser which conducts the first fluid into the first flow duct and having a second diffuser which conducts the first fluid out of the first flow duct.
    • PRIOR ART
  • Exhaust-gas heat exchangers are preferably used in motor vehicles, where they are arranged downstream of the internal combustion engine. The hot exhaust gas discharged by the internal combustion engine is cooled in said exhaust-gas heat exchangers and can be supplied back to the internal combustion engine by means of exhaust-gas recirculation. This serves to reduce the pollutant content in the exhaust gas.
  • Exhaust-gas heat exchangers are known which have a tube bundle with exhaust-gas tubes, said tube bundle being surrounded by a housing through which a coolant flows. Here, the heat of the exhaust gas is dissipated to the coolant. The coolant passes through a coolant inlet into the interior of the housing and, after flowing around the tube bundle, exits the exhaust-gas heat exchanger via a coolant outlet likewise formed on the housing.
  • Here, the exhaust gas flows into the tube bundle via an inlet diffuser and flows out of the tube bundle via an outlet diffuser.
  • To be able to connect exhaust-gas heat exchangers to elements positioned upstream or downstream, the inflow lines and outflow lines of the heat exchanger have flanges. The required flanges are generated directly on the respective components either through the use of injection molding or pressure casting processes or, if the use of such methods is not possible, through the additional attachment of flanges.
  • Here, in presently known solutions, the flanges, which are for example attached to the housing of the heat exchanger itself or to the diffuser of the heat exchanger, are brazed or welded to the heat exchanger as additional components.
  • A disadvantage of the prior art is in particular the fact that the flange constitutes an additional component, resulting in increased costs for parts. Furthermore, the joining of the flange to the heat exchanger constitutes an additional process step which increases the machining time and entails additional costs.
    • PRESENTATION OF THE INVENTION, PROBLEM, SOLUTION, ADVANTAGES
  • The problem addressed by the present invention is therefore that of providing an exhaust-gas heat exchanger which has one or more flanges formed in one piece with the exhaust-gas heat exchanger.
  • The problem addressed by the present invention is solved by means of an exhaust-gas heat exchanger having the features of claim 1. Advantageous refinements of the present invention are described in the subclaims.
  • It is advantageous for an exhaust-gas heat exchanger, in particular for use in the exhaust tract of a motor vehicle, having a housing and having a first flow duct through which a first fluid can flow and which is received at its end regions in tube plates, wherein the first flow duct and the tube plates are surrounded by the housing in such a way that the housing forms a second flow duct through which a second fluid can flow, which second fluid can flow around the first flow duct, having a first diffuser which conducts the first fluid into the first flow duct and having a second diffuser which conducts the first fluid out of the first flow duct, wherein the exhaust-gas heat exchanger has, at at least one of its end regions, an at least partially encircling first flange which is formed in one piece with the exhaust-gas heat exchanger.
  • By means of an at least partially encircling flange formed in one piece with the housing, it is possible for the component positioned upstream or downstream of the exhaust-gas heat exchanger to be connected directly to the flange. It is thus possible to save costs and working steps because the flange need not be attached as an additional component to the housing or to the diffuser.
  • It is also expedient for the first flange to be formed by roller-burnishing or deep-drawing or forging or embossing or internal high pressure forming.
  • A flange can be formed on the housing or on the diffuser in a particularly advantageous manner using one of said methods. It is advantageous here that the flange is formed out of the material of the housing or of the diffuser itself.
  • It is also preferable for the housing and/or one of the diffusers to have a first flange.
  • In particular, the arrangement of the flange on the housing itself or on the diffusers connected to the housing is advantageous because those components of the exhaust-gas heat exchanger which are positioned upstream or downstream can be connected directly to the exhaust-gas heat exchanger in this way.
  • It is also advantageous for the housing and/or the first flange and/or the diffuser to be formed from steel.
  • In particular owing to the high temperatures of the exhaust gas which flows through the exhaust-gas heat exchanger, it is advantageous for the housing and in particular the diffusers to be formed from a heat-resistant material. The high exhaust-gas temperatures could otherwise lead to permanent deformation or to failure of individual components.
  • It is also expedient for the housing to be formed from aluminum and for the diffuser and/or the first flange to be formed from steel.
  • A configuration in which the housing is formed from aluminum and the diffusers and/or the flange are/is formed from steel can have an advantageous effect on the component weight. If the exhaust-gas temperatures permit the use of aluminum as a housing material, the component can be configured in a particularly advantageous manner.
  • It is also advantageous for the first flange to have a thread.
  • By means of a thread formed into the flange, it is possible for components positioned upstream or downstream to be screwed directly to the exhaust-gas heat exchanger. In this way, it is possible for additional components such as, for example, a weld-on nut to be dispensed with, whereby it is possible to save on material costs and working steps.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention will be explained in detail below on the basis of an exemplary embodiment with reference to the drawing, in which:
  • FIG. 1 is a perspective view of an exhaust-gas heat exchanger.
    •  PREFERRED EMBODIMENT OF THE INVENTION
  • FIG. 1 shows a perspective view of an exhaust-gas heat exchanger 1. The exhaust-gas heat exchanger 1 is composed substantially of a housing 3 which, in the interior, has a multiplicity of flow ducts which, in their end regions, are received in tube plates. The tube plates and the flow ducts cannot be seen in FIG. 1 owing to the perspective view.
  • The housing 3 surrounds the tube plates in such a way that a second flow duct is formed which is separated from the flow ducts enclosed in the tube plates. A fluid can flow into the housing via the fluid inlet 2 and can flow through said housing. Not illustrated in FIG. 1 is the fluid outlet through which the fluid can exit the housing 3 again.
  • A further fluid, preferably the exhaust gas in an exhaust tract, flows through the exhaust-gas heat exchanger 1 along the flow ducts enclosed in the tube plates. A second fluid flows through said exhaust-gas heat exchanger through the fluid inlet 2 and the fluid outlet (not shown), wherein the second fluid flows around the flow ducts, and heat is thus dissipated from the hot medium flowing in the flow ducts.
  • In the exhaust-gas heat exchanger 1 shown in FIG. 1, a diffuser 5 is connected to one side of the housing 3. The first fluid flows through said diffuser either before or after flowing through the housing 3, depending on the flow direction of the first fluid.
  • In alternative embodiments, a second diffuser may also be arranged on the opposite end of the housing. The shape of the diffusers 5 may likewise deviate from the cylindrical shape shown here, and may for example have a conical shape.
  • Illustrated on the outer radius of the housing 3 is an encircling flange 4. Said flange 4 is formed in one piece with the housing 3. This is possible for example through the use of the machining processes roller-burnishing, deep-drawing, forging, embossing or internal high pressure forming.
  • In alternative embodiments, it is also conceivable for a flange 4 to be arranged on one or both of the diffusers 5.
  • By means of the flange 4 integrated directly in the housing 3 or in a diffuser 5, it is possible for components positioned upstream or downstream, which components are arranged upstream of the exhaust-gas heat exchanger 1 or downstream thereof in the exhaust tract, to be connected directly to the exhaust-gas heat exchanger 1.
  • Here, the connection may be realized for example by means of tube clamps. The flange 4 may furthermore have a thread. By means of said thread, components can be connected directly to the exhaust-gas heat exchanger 1.
  • By contrast to the flange 4 shown in FIG. 1, the flange 4 may also be formed as an only partially encircling flange.
  • Overall, by means of the flange integrated directly in the exhaust-gas heat exchanger 1, it is possible to attain savings with regard to the number of components required and, furthermore, fewer joining processes are required, whereby the machining costs are also reduced.
  • Since the exhaust-gas heat exchanger 1 is subjected to high temperatures owing to the throughflow of an exhaust gas from an internal combustion engine, it is necessary for the diffusers 5 and the housing 3 to be manufactured from a material which exhibits adequately high heat resistance.
  • It is therefore particularly preferable for the exhaust-gas heat exchanger 1 to be manufactured partially or entirely from steel. It is by all means conceivable for only individual components to be manufactured from steel, in particular those components which are subjected to the highest temperatures, and for other components to be formed for example from more lightweight materials such as for example aluminum. Here, the deciding factor is the temperature level that the component will be subjected to later in normal operation.

Claims (6)

1. Exhaust-gas heat exchanger, in particular for use in the exhaust tract of a motor vehicle, having a housing and having a first flow duct through which a first fluid can flow and which is received at its end regions in tube plates, wherein the first flow duct and the tube plates are surrounded by the housing in such a way that the housing forms a second flow duct through which a second fluid can flow, which second fluid can flow around the first flow duct, having a first diffuser which conducts the first fluid into the first flow duct and having a second diffuser which conducts the first fluid out of the first flow duct, wherein the exhaust-gas heat exchanger has, at at least one of its end regions, an at least partially encircling first flange which is formed in one piece with the exhaust-gas heat exchanger.
2. Exhaust-gas heat exchanger according to claim 1, wherein the first flange is formed by roller-burnishing or deep-drawing or forging or embossing or internal high pressure forming.
3. Exhaust-gas heat exchanger according to claim 1, wherein the housing and/or one of the diffusers has a first flange.
4. Exhaust-gas heat exchanger according to claim 1, wherein the housing and/or the first flange and/or the diffuser is formed from steel.
5. Exhaust-gas heat exchanger according to one claim 1 one of the preceding claims, wherein the housing is formed from aluminum and the diffuser and/or the first flange is formed from steel.
6. Exhaust-gas heat exchanger according to claim 1, wherein the first flange has a thread.
US13/930,175 2012-06-29 2013-06-28 Exhaust-gas heat exchanger Abandoned US20140000848A1 (en)

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US14/808,249 US20150328726A1 (en) 2012-06-29 2015-07-24 Exhaust-gas heat exchanger

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DE102012211311.8A DE102012211311A1 (en) 2012-06-29 2012-06-29 Exhaust gas heat exchanger
DE102012211311.8 2012-06-29

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WO2015165903A1 (en) * 2014-04-29 2015-11-05 Mahle International Gmbh Heat exchanger
US10883773B2 (en) 2017-05-17 2021-01-05 Mahle International Gmbh Heat exchanger with a separator
US11002490B2 (en) 2014-12-08 2021-05-11 Mahle International Gmbh Heat exchanger with housing parts connected by flange ring connection

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DE102016207443A1 (en) 2016-04-29 2017-11-16 Mahle International Gmbh Heat exchanger
CN107350759A (en) * 2017-08-31 2017-11-17 北京博元盛汽车零部件有限公司 A kind of production method of new automobile condenser
DE102022210887A1 (en) 2022-10-14 2024-04-25 Mahle International Gmbh Heat exchanger

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US20170045308A1 (en) * 2014-04-29 2017-02-16 Mahle International Gmbh Heat exchanger
US11029100B2 (en) * 2014-04-29 2021-06-08 Mahle International Gmbh Heat exchanger
US11002490B2 (en) 2014-12-08 2021-05-11 Mahle International Gmbh Heat exchanger with housing parts connected by flange ring connection
US10883773B2 (en) 2017-05-17 2021-01-05 Mahle International Gmbh Heat exchanger with a separator

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