EP2400140B1 - Gaswärmetauscher, insbesondere für die Abgase eines Motors - Google Patents

Gaswärmetauscher, insbesondere für die Abgase eines Motors Download PDF

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Publication number
EP2400140B1
EP2400140B1 EP11170763.4A EP11170763A EP2400140B1 EP 2400140 B1 EP2400140 B1 EP 2400140B1 EP 11170763 A EP11170763 A EP 11170763A EP 2400140 B1 EP2400140 B1 EP 2400140B1
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EP
European Patent Office
Prior art keywords
exchanger
gas reservoir
gas
housing
component forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11170763.4A
Other languages
English (en)
French (fr)
Other versions
EP2400140A2 (de
EP2400140A3 (de
Inventor
Eva Tomas Herrero
José Antonio De La Fuente Romero
Jorge Ibarz Castello
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.)
Valeo Termico SA
Original Assignee
Valeo Termico SA
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Filing date
Publication date
Application filed by Valeo Termico SA filed Critical Valeo Termico SA
Publication of EP2400140A2 publication Critical patent/EP2400140A2/de
Publication of EP2400140A3 publication Critical patent/EP2400140A3/de
Application granted granted Critical
Publication of EP2400140B1 publication Critical patent/EP2400140B1/de
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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
    • F02M26/13—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
    • F02M26/11—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
    • 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
    • F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers

Definitions

  • the present invention relates to a heat exchanger for gas, in particular for the exhaust gases of an engine.
  • the invention finds particular application in exhaust gas recirculation exchangers (EGRC) of an engine (hereinafter still referred to as EGR exchanger).
  • EGRC exhaust gas recirculation exchangers
  • the current configuration of the EGR exchangers on the market corresponds to that of a metal heat exchanger generally made of stainless steel or aluminum, see for example, the DE 10028131 C1 .
  • a metal heat exchanger generally made of stainless steel or aluminum, see for example, the DE 10028131 C1 .
  • EGR exchangers The majority of the components of both types of EGR exchangers are metallic, so the exchangers are assembled by mechanical means and then oven-welded or arc or laser-welded to provide an adequate level of sealing for the application. considered.
  • the EGR exchanger can also include components made of plastic that can perform one or more functions as a single piece.
  • the heat exchanger integrates different components giving it these functions. This means that an EGR exchanger must have at least two connections to the cooling fluid, at least two gas connections and at least one element or bracket to the engine environment.
  • the subject of the present invention is a gas heat exchanger, in particular for the exhaust gases of an engine, making it possible to overcome the drawbacks of heat exchangers known in the art, capable of integrating various functions in the form of a single piece of gas. coupling coupled to the heat exchanger housing.
  • the gas heat exchanger in particular for the exhaust gas of an engine, which is the subject of the present invention, comprises a housing intended for the circulation of gases with heat exchange with a cooling fluid, means for connecting to the circuit of the cooling fluid and at least one piece forming a gas reservoir coupled to one end of the housing, said part integrating at least one fixing lug to the engine block and connecting means to the gas circuit, and is characterized in that said connecting means to the coolant circuit are also integrated with said gas reservoir part.
  • the gas reservoir part is manufactured in several parts if the demolding process is not feasible or if it proves to be too complex, said parts being welded together and to the housing of the exchanger to ensure the sealing of coolant and gases.
  • the gas reservoir piece may be made of stainless steel or aluminum.
  • Aluminum fabrication has the advantage of reducing the cost of the part and slightly improving the efficiency of the EGR exchanger due to the better conductivity of aluminum compared to that of stainless steel.
  • the gas reservoir part may have orifices enabling it to be fastened to the heat exchanger box by means of bolting elements.
  • the path of the cooling fluid passes through the bracket and a bridge integrated in said gas reservoir part and connected to the housing of the exchanger.
  • the gas reservoir member has a flange or flange connectable to a gas circuit interface.
  • the gas reservoir part comprises threaded orifices for setting up a thermostat for the cooling fluid.
  • the gas reservoir part comprises an orifice for evacuation of the exchanger of the trapped gases in the cooling fluid circuit.
  • the heat exchanger 1 for gas in particular for the exhaust gas of an engine, comprises a housing 2 intended for the circulation of gases with heat exchange with a cooling fluid.
  • Said gas reservoir part 7 can be entirely manufactured by means of a process of microfusion and welding to the housing 2 of the exchanger 1; or be made in several parts if the demolding process is not feasible or if it proves too complex, said parts then being welded together and to the housing 2 of the exchanger 1 to ensure the fluid tightness cooling and gases.
  • Said gas reservoir piece 7 can be fixed to the casing 2 of the exchanger 1 by means of a method of welding in the oven or welding arc or laser; or be attached to the housing 2 by means of bolts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Claims (10)

  1. Gaswärmetauscher (1), insbesondere für die Abgase eines Motors, umfassend ein Gehäuse (2), das für die Zirkulation von Gasen mit einem Wärmeaustausch mit einem Kühlfluid bestimmt ist, Verbindungsmittel (6, 11) mit der Kühlfluidleitung und mindestens ein Stück, das einen Gasbehälter (7, 7') bildet, der mit einem der Enden des Gehäuses (2) gekuppelt ist, wobei das Stück (7, 7') mindestens einen Befestigungsansatz (9) am Motorblock und Verbindungsmittel (4) mit der Gasleitung integriert,
    dadurch gekennzeichnet, dass die Verbindungsmittel (6, 11) mit der Kühlfluidleitung auch in das Stück integriert sind, das den Gasbehälter (7, 7') bildet, wobei die Kühlfluidbahn durch den Befestigungsansatz (9) und durch eine Brücke (10) hindurchgeht, die in dem Stück integriert ist, das den Gasbehälter (7) bildet und mit dem Gehäuse (2) des Tauschers (1) verbunden ist.
  2. Tauscher (1) nach Anspruch 1,
    wobei das den Gasbehälter (7, 7') bildende Stück zur Gänze mit einem Mikrofusions- und Schweißverfahren am Gehäuse (2) des Tauschers (1) hergestellt wird.
  3. Tauscher (1) nach Anspruch 1,
    wobei das den Gasbehälter (7, 7') bildende Stück aus mehreren Teilen hergestellt ist, wenn das Entformungsverfahren nicht durchführbar ist oder wenn es sich als zu komplex erweist, wobei die Teile anschließend miteinander und am Gehäuse (2) des Tauschers (1) verschweißt werden, um die Dichtheit des Kühlfluids und der Gase sicherzustellen.
  4. Tauscher (1) nach einem der Ansprüche 1 bis 3,
    wobei das den Gasbehälter (7, 7') bildende Stück aus rostfreiem Stahl hergestellt ist.
  5. Tauscher (1) nach einem der Ansprüche 1 bis 3,
    wobei das den Gasbehälter (7, 7') bildende Stück aus Aluminium hergestellt ist.
  6. Tauscher (1) nach einem der Ansprüche 1 bis 5,
    wobei das den Gasbehälter (7, 7') bildende Stück am Gehäuse (2) des Tauschers (1) durch ein Ofenschweiß- oder Lichtbogen- oder Laserschweißverfahren befestigt wird.
  7. Tauscher (1) nach einem der Ansprüche 1 bis 5,
    wobei das den Gasbehälter (7, 7') bildende Stück Öffnungen umfasst, die es gestatten, dieses am Gehäuse (2) des Tauschers (1) mit Schraubelementen zu befestigen.
  8. Tauscher (1) nach einem der vorhergehenden Ansprüche,
    wobei das den Gasbehälter (7') bildende Stück einen Rand oder einen Flansch (12) umfasst, der mit einer Grenzfläche der Gasleitung verbunden werden kann.
  9. Tauscher (1) nach einem der vorhergehenden Ansprüche,
    wobei das den Gasbehälter (7, 7') bildende Stück Gewindeöffnungen umfasst, die es gestatten, einen Thermostat für das Kühlfluid anzubringen.
  10. Tauscher (1) nach einem der vorhergehenden Ansprüche,
    wobei das den Gasbehälter (7, 7') bildende Stück eine Öffnung umfasst, welche die Abfuhr der in der Kühlfluidleitung eingeschlossenen Gase aus dem Tauscher (1) gestattet.
EP11170763.4A 2010-06-28 2011-06-21 Gaswärmetauscher, insbesondere für die Abgase eines Motors Active EP2400140B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES201031002A ES2399036B1 (es) 2010-06-28 2010-06-28 Intercambiador de calor para gases en especial de los gases de escape de un motor.

Publications (3)

Publication Number Publication Date
EP2400140A2 EP2400140A2 (de) 2011-12-28
EP2400140A3 EP2400140A3 (de) 2016-10-05
EP2400140B1 true EP2400140B1 (de) 2018-09-12

Family

ID=44800392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11170763.4A Active EP2400140B1 (de) 2010-06-28 2011-06-21 Gaswärmetauscher, insbesondere für die Abgase eines Motors

Country Status (2)

Country Link
EP (1) EP2400140B1 (de)
ES (2) ES2399036B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6606375B2 (ja) * 2015-02-09 2019-11-13 現代自動車株式会社 統合ｅｇｒクーラー及びこれを含む統合ｅｇｒクーリングシステム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5732688A (en) * 1996-12-11 1998-03-31 Cummins Engine Company, Inc. System for controlling recirculated exhaust gas temperature in an internal combustion engine
DE19750588B4 (de) * 1997-11-17 2016-10-13 MAHLE Behr GmbH & Co. KG Vorrichtung zur Abgasrückführung für einen Verbrennungsmotor
DE19906401C1 (de) * 1999-02-16 2000-08-31 Ranco Inc Of Delaware Wilmingt Abgasrückführsystem
DE19960929A1 (de) * 1999-12-17 2001-06-28 Bosch Gmbh Robert Abschaltbarer Wärmetauscher
DE10028131C1 (de) * 2000-06-07 2001-12-13 Daimler Chrysler Ag Abgasrückführsystem für eine Brennkraftmaschine
DE50311520D1 (de) * 2002-05-15 2009-06-25 Behr Gmbh & Co Kg Schaltbarer abgaswaermetauscher
US6997143B2 (en) * 2003-12-12 2006-02-14 Visteon Global Technologies, Inc. Integrated heat exchange and fluid control device
ES2304092B1 (es) * 2006-11-17 2009-07-03 Valeo Termico S.A. Intercambiador de calor para gases, en especial de los gases de escape de un motor.
DE102006054723A1 (de) * 2006-11-21 2008-05-29 Behr Gmbh & Co. Kg Wärmetauscher, insbesondere Abgaswärmetauscher
US8443593B2 (en) * 2008-12-12 2013-05-21 Westcast Industries, Inc. Liquid-cooled exhaust valve assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2399036A1 (es) 2013-03-25
EP2400140A2 (de) 2011-12-28
ES2399036B1 (es) 2014-01-28
EP2400140A3 (de) 2016-10-05
ES2700735T3 (es) 2019-02-19

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