EP2025911A1 - Dispositif de refroidissement de gaz d'échappement pour un moteur à combustion interne - Google Patents

Dispositif de refroidissement de gaz d'échappement pour un moteur à combustion interne Download PDF

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Publication number
EP2025911A1
EP2025911A1 EP08158817A EP08158817A EP2025911A1 EP 2025911 A1 EP2025911 A1 EP 2025911A1 EP 08158817 A EP08158817 A EP 08158817A EP 08158817 A EP08158817 A EP 08158817A EP 2025911 A1 EP2025911 A1 EP 2025911A1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
heat exchanger
space
cooling device
valve
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.)
Granted
Application number
EP08158817A
Other languages
German (de)
English (en)
Other versions
EP2025911B1 (fr
Inventor
Hans-Ulrich Kühnel
Hans-Jürgen Hüsges
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Priority to PL08158817T priority Critical patent/PL2025911T3/pl
Publication of EP2025911A1 publication Critical patent/EP2025911A1/fr
Application granted granted Critical
Publication of EP2025911B1 publication Critical patent/EP2025911B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/30—Connections of coolers to other devices, e.g. to valves, heaters, compressors or filters; Coolers characterised by their location on the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—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

Definitions

  • the invention relates to an exhaust gas cooling device for an internal combustion engine having a housing with an exhaust gas inlet, an exhaust gas outlet, a valve device and a U-shaped heat exchanger unit with a Hinlauf- and a return path.
  • Such an exhaust gas cooling device is for example from the DE 10 2004 019 554 A1 known.
  • the initially hot exhaust gas is passed into a so-called U-shaped heat exchanger, wherein the heat exchanger has ribs extending in the direction of flow, which are intended to ensure improved heat transfer between the exhaust gas and the coolant.
  • this heat exchanger takes place with increasing exhaust gas temperature reduction a sooting or carbonization of the heat exchanger, which hinder the flow. This sooting occurs in particular in the return path of the U-shaped heat exchanger, since the exhaust gas has already been strongly cooled here.
  • the housing on the open side of the U-shaped heat exchanger provides a first, second and third space, wherein the first space fluidly connects the exhaust gas inlet to the second space and the third space fluidly connects the second space with the exhaust gas outlet, wherein in the second space, the valve device is arranged such that the second space is subdivided into two subspaces, wherein the first fluidly connected to the Hinngerrange and the second fluidly connected to the return path.
  • an exhaust gas cooling device is provided, in which the flow direction of the U-shaped heat exchanger can be changed in the short term by simply pressing the valve device and thus the "cold" part of the heat exchanger, ie the return path, acted upon with hot exhaust gas and thus cleaned.
  • the valve device is designed as a centrally mounted flap valve, wherein a flap with metal-circular lateral surfaces of the first and second space is in operative connection.
  • the housing consists of two housing shells, wherein the first receives the heat exchanger unit and in the second, the valve device is mounted.
  • the present invention also relates to an exhaust gas recirculation system having an exhaust gas cooling device, wherein a bypass passage bypassing the heat exchange unit and an exhaust gas recirculation valve are provided.
  • the bypass channel can be provided independently of the exhaust gas cooling device or, as described later, be integrated in this.
  • the exhaust gas recirculation valve is upstream or downstream of the exhaust gas cooling device in known manner and regulates the amount of exhaust gas to be recirculated. It is particularly advantageous if the bypass channel is formed in the flap of the valve device.
  • a method for cleaning a U-shaped heat exchanger of an exhaust gas recirculation system in which the return path is connected in the cleaning mode with an exhaust inlet of the heat exchanger, whereby the flow direction of the exhaust gas is reversed by the heat exchanger, such that a return path of the heat exchanger with hot Exhaust gas is applied.
  • FIG. 1 shows the inventive exhaust gas cooling device 1. It can be seen that while a housing 2 is provided, which consists essentially of two housing shells 12, 13, wherein the first housing shell 12 receives a heat exchanger unit 6 and in the second housing shell 13, a valve device 5 is mounted , Furthermore, the second housing shell 13 has an exhaust gas inlet 3 and an exhaust gas outlet 4.
  • the heat exchanger unit 6 is U-shaped with a Hinlaufumble 7 and a return path 8. In the present case, the heat exchanger unit 6 consists of a lower part 25 and a lid, not shown.
  • circumferential ribs 14 are provided on lower part 25 and cover in a known manner, which ensures improved heat transfer between the exhaust gas, which is located on the outward and return path 7, 8 and located in the coolant jacket 16 coolant.
  • the return line 7, 8 are formed by a provided in a known manner middle wall 15 of the U-shaped heat exchanger unit 6. This center wall 15 also forms a bearing point 24 for the valve device 5.
  • a coolant inlet and a coolant outlet are in the illustrated Section not shown.
  • the second housing shell 13 is designed such that a first space 9, a second space 10 and a third space 11 are provided.
  • the first space 9 fluidly connects the exhaust gas inlet 3 with the second space 10.
  • the third space 11 fluidly connects the second space 10 with the exhaust gas outlet 5.
  • the second space 10 has, in addition to the compounds described above, a connection to the Hinlaufumble 7 and a connection to the return line 8 of the U-shaped heat exchanger unit 6.
  • the valve device 5 is arranged such that the second space 10 in two subspaces 17, 18 is divisible, wherein the first subspace 17 is fluidly connected to the Hinlaufux 7 and the second subspace 18 fluidly connected to the return line 8.
  • FIGS. 2 to 4 A particular embodiment and the operation of the exhaust gas cooling device or an exhaust gas recirculation system for internal combustion engines is the FIGS. 2 to 4 refer to.
  • FIG. 2 Now shows a front view in section of the exhaust gas recirculation system 19 according to the invention, in addition to the exhaust gas cooling device according to the invention upstream in the flow direction, not shown in detail exhaust gas recirculation valve, and the heat exchanger unit 6 bypassing bypass passage 20, wherein the bypass channel 20 is particularly advantageously integrated in the valve device 5 is arranged.
  • the valve device 5 is in this case designed as a centrally mounted flap valve, wherein a flap 23 with part-circular lateral surfaces 21 and 22 of the first room 9 and the third room 11 is operatively connected such that, depending on the position of the flap valve 5, the first chamber 9 via the subspace 17 is connected to the Hinvierumble 7 or is connected via the subspace 18 with the return path 8.
  • FIG. 2 is the position of the flap valve 5 such that the exhaust gas flows through the exhaust inlet 3 in the first chamber 9 and is cooled by this through the subspace 17 through the Hinlaufux and subsequently through the return path 8 before it enters the subspace 18 and then in the third space 11 flows to exit via the exhaust outlet 4, the exhaust gas recirculation system.
  • FIG. 3 again shows the front view of the exhaust gas recirculation system according to the invention, wherein the position of the flap valve 5 is now selected so that a flow through the bypass channel 20 and thus a bypass of the U-shaped heat exchanger 6 takes place.
  • the bypass channel 20 is formed in the flap 23 of the valve device 5 in a particular embodiment.
  • the bypass channel is then directly connected to the first space 9 and the third space 11, with the result that the exhaust gas by the shortest route from the exhaust gas inlet 3, without being cooled, flows to the exhaust gas outlet 4.
  • the bypass channel would be formed in a known manner outside the valve device and opened or closed by a corresponding bypass valve.
  • FIG. 4 now shows a front view of the exhaust gas recirculation system according to the invention, in which the flap valve of the valve device 5 has a position such that the exhaust gas inlet 3 is connected via the first space 9 directly to the return line 8. Consequently, the Hinvierier 8 is connected via the third space 11 with the exhaust gas outlet 4.
  • the hot exhaust gas enters via the exhaust gas inlet 3 in the first space 9 and is then passed through the subspace 18 in the return path, where due to the high temperature of the exhaust gas sooting and cooled exhaust gas residues at the ribs 14, 15 can be resolved. Also in this case, the hot exhaust gas is cooled by the heat exchanger unit 6 and is subsequently guided over the Hinlaufrange 7 to the exhaust outlet 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Exhaust Gas After Treatment (AREA)
EP08158817A 2007-08-17 2008-06-24 Dispositif de refroidissement de gaz d'échappement pour un moteur à combustion interne Active EP2025911B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08158817T PL2025911T3 (pl) 2007-08-17 2008-06-24 Urządzenie do chłodzenia spalin silnika spalinowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007038882A DE102007038882A1 (de) 2007-08-17 2007-08-17 Abgaskühlvorrichtung für eine Verbrennungskraftmaschine

Publications (2)

Publication Number Publication Date
EP2025911A1 true EP2025911A1 (fr) 2009-02-18
EP2025911B1 EP2025911B1 (fr) 2010-11-10

Family

ID=40029206

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08158817A Active EP2025911B1 (fr) 2007-08-17 2008-06-24 Dispositif de refroidissement de gaz d'échappement pour un moteur à combustion interne

Country Status (6)

Country Link
US (1) US8011175B2 (fr)
EP (1) EP2025911B1 (fr)
AT (1) ATE487870T1 (fr)
DE (2) DE102007038882A1 (fr)
ES (1) ES2352308T3 (fr)
PL (1) PL2025911T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444647A2 (fr) 2010-10-25 2012-04-25 Pierburg GmbH Dispositif d'échange thermique de gaz d'échappement
EP2559889A1 (fr) * 2011-08-18 2013-02-20 Wevista Echangeur de chaleur egr a vanne integree
EP2299099A3 (fr) * 2009-09-22 2014-03-26 Pierburg GmbH Dispositif caloporteur

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7581533B1 (en) * 2008-10-09 2009-09-01 Gm Global Technology Operations, Inc. Three mode cooler for exhaust gas recirculation
DE102008051268A1 (de) * 2008-10-10 2010-04-15 Mahle International Gmbh Kühleinrichtung
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
US8424296B2 (en) 2010-06-11 2013-04-23 Dana Canada Corporation Annular heat exchanger
CN102691593A (zh) * 2011-03-25 2012-09-26 皮尔伯格有限责任公司 用于内燃机的废气冷却装置
CA2846284A1 (fr) 2011-09-09 2013-03-14 Dana Canada Corporation Dispositif de recuperation des gaz d'echappement a plaques empilees
US9989322B2 (en) 2013-03-01 2018-06-05 Dana Canada Corporation Heat recovery device with improved lightweight flow coupling chamber and insertable valve
EP2803843B1 (fr) 2013-05-14 2018-02-14 Bosal Emission Control Systems NV Unité pour récupérer l'énergie thermique de gaz d'échappement d'un moteur à combustion interne
WO2016140068A1 (fr) * 2015-03-04 2016-09-09 株式会社 三五 Échangeur de chaleur, et dispositif de récupération de chaleur de gaz d'échappement comprenant ledit échangeur de chaleur
KR102299349B1 (ko) * 2017-04-10 2021-09-08 현대자동차주식회사 차량용 egr 쿨러

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0987427A1 (fr) * 1998-09-14 2000-03-22 Modine Manufacturing Company Dispositif pour recirculer un courant de gaz d'échapemenet au conduit d'admission d'un moteur
DE102004019554A1 (de) 2004-04-22 2005-11-17 Pierburg Gmbh Abgasrückführsystem für eine Verbrennungskraftmaschine
DE10355649A1 (de) * 2003-11-28 2005-12-22 Benteler Automobiltechnik Gmbh Längsdurchströmter Abgaskühler
DE202006009464U1 (de) 2005-09-23 2006-09-14 Pierburg Gmbh Wärmetauscher
FR2891590A1 (fr) 2005-09-30 2007-04-06 Renault Sas Dispositif de repartition des gaz recircules, refroidisseur de gaz recircules et procede de recirculation de gaz d'echappement.
DE102007002459A1 (de) * 2006-01-19 2007-07-26 Behr Gmbh & Co. Kg Vorrichtung zur Abgaskühlung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506703A (en) * 1983-03-14 1985-03-26 Water Services Of America, Inc. Four-way fluid flow diverter valve
DE102005006055B4 (de) 2005-02-10 2015-07-23 Albert Handtmann Metallgusswerk Gmbh & Co. Kg Wärmetauscher
FR2891591A1 (fr) 2005-09-30 2007-04-06 Renault Sas Dispositif de repartition des gaz recircules, et refroidisseur de gaz recircules comportant un tel dispositif
FR2891589A1 (fr) 2005-09-30 2007-04-06 Renault Sas Refroidisseur de gaz recircules
FR2911638B1 (fr) 2007-01-19 2009-03-13 Renault Sas Systeme d'orientation d'un flux de gaz de combustion en re-circulation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0987427A1 (fr) * 1998-09-14 2000-03-22 Modine Manufacturing Company Dispositif pour recirculer un courant de gaz d'échapemenet au conduit d'admission d'un moteur
DE10355649A1 (de) * 2003-11-28 2005-12-22 Benteler Automobiltechnik Gmbh Längsdurchströmter Abgaskühler
DE102004019554A1 (de) 2004-04-22 2005-11-17 Pierburg Gmbh Abgasrückführsystem für eine Verbrennungskraftmaschine
DE202006009464U1 (de) 2005-09-23 2006-09-14 Pierburg Gmbh Wärmetauscher
FR2891590A1 (fr) 2005-09-30 2007-04-06 Renault Sas Dispositif de repartition des gaz recircules, refroidisseur de gaz recircules et procede de recirculation de gaz d'echappement.
DE102007002459A1 (de) * 2006-01-19 2007-07-26 Behr Gmbh & Co. Kg Vorrichtung zur Abgaskühlung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2299099A3 (fr) * 2009-09-22 2014-03-26 Pierburg GmbH Dispositif caloporteur
EP2444647A2 (fr) 2010-10-25 2012-04-25 Pierburg GmbH Dispositif d'échange thermique de gaz d'échappement
DE102010053545A1 (de) 2010-10-25 2012-05-10 Pierburg Gmbh Abgaswärmetauschereinrichtung
EP2559889A1 (fr) * 2011-08-18 2013-02-20 Wevista Echangeur de chaleur egr a vanne integree
FR2979124A1 (fr) * 2011-08-18 2013-02-22 Wevista Echangeur egr a vanne integree

Also Published As

Publication number Publication date
ATE487870T1 (de) 2010-11-15
ES2352308T3 (es) 2011-02-17
DE102007038882A1 (de) 2009-02-19
US20090044525A1 (en) 2009-02-19
EP2025911B1 (fr) 2010-11-10
DE502008001745D1 (de) 2010-12-23
PL2025911T3 (pl) 2011-04-29
US8011175B2 (en) 2011-09-06

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