EP1384867B1 - Dispositif d'étanchéification d'un conduite des gaz d'échappement - Google Patents

Dispositif d'étanchéification d'un conduite des gaz d'échappement Download PDF

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Publication number
EP1384867B1
EP1384867B1 EP03014910A EP03014910A EP1384867B1 EP 1384867 B1 EP1384867 B1 EP 1384867B1 EP 03014910 A EP03014910 A EP 03014910A EP 03014910 A EP03014910 A EP 03014910A EP 1384867 B1 EP1384867 B1 EP 1384867B1
Authority
EP
European Patent Office
Prior art keywords
pipe
exhaust gas
pipe part
socket
pipe socket
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.)
Expired - Fee Related
Application number
EP03014910A
Other languages
German (de)
English (en)
Other versions
EP1384867A1 (fr
Inventor
Axel LÖFFLER
Karl-Heinz Metzger
Stephan Tafel
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.)
Daimler AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1384867A1 publication Critical patent/EP1384867A1/fr
Application granted granted Critical
Publication of EP1384867B1 publication Critical patent/EP1384867B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1827—Sealings specially adapted for exhaust 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
    • F02M26/12—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems characterised by means for attaching parts of an EGR system to each other or to engine parts
    • 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
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/18—Thermal insulation or heat protection
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10268—Heating, cooling or thermal insulating means
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10314—Materials for intake systems
    • F02M35/10321—Plastics; Composites; Rubbers

Definitions

  • the invention relates to a device for sealing a pipe part of an exhaust gas recirculation line with one in one Wall part of an exhaust gas recirculation pipe recorded sleeve, the first with the pipe part firmly connected, at least in the front region cylindrically shaped pipe part has, to which a second larger in diameter Pipe part connects, in the region of its end a second cylindrical tube part, which serves as a contact surface for a ring seal is used, which is accommodated in a flange part is.
  • the sleeve consists for this purpose of a first cylindrical part, which is firmly connected to the exhaust pipe.
  • To the cylindrical part closes a conically widening Pipe part with a flange for receiving a ring seal on, by means of the flange against the front side of Pipe socket is pressed.
  • Such an assembly is complicated and expensive.
  • the sleeve has a first fixed to the exhaust gas recirculation pipeline, at least in the front region cylindrically shaped Pipe part on which a second larger in diameter Pipe part connects, in the region of its end a second cylindrical tube part, which serves as a contact surface for a ring seal is used.
  • the ring seal is using a provided on the pipe part flange against a Surface of the wall part pressed.
  • the invention has for its object to provide the device for Sealing a pipe part of an exhaust pipe so train and arrange that at the same time good Sealing effect and high stability of the sealing material the Pipe part to assemble properly in a very short time leaves.
  • the object is achieved according to the invention in that between the first and second tube part is a conical widening clamping part is provided, with its Surface by insertion into the pipe socket against the conically expanding pipe socket comes to rest and thus acting as a frictional connection clamping connection is formed.
  • This will be without additional Screw connection between the exhaust gas recirculation pipe and the Mixed housing created a perfect clamping connection and completely dispensed with additional screw.
  • There between the mixing housing and the exhaust gas recirculation pipe a is provided conically expanding sleeve, you get a gentle sealing, because of the simple cooling between Sleeve and exhaust gas recirculation pipe overheating of the ring seal is avoided.
  • Friction connection acting clamping part an angle ⁇ which is between 7 ° and 15 °, in particular between 8 ° and 12 °, is large.
  • the exhaust gas recirculation pipe part in a pipe socket provided in a mixing housing can be clamped, which has a bore with cylindrical Turnout and a subsequent conical part has, whose side part at an angle with the central axis which is equal, slightly smaller or slightly larger than the angle is ⁇ .
  • Solution is finally provided, that is in the Mixed housing extending pipe socket is tapered so, that its outlet opening is in the flow direction of Fresh air extends.
  • 1 shows an exhaust gas recirculation pipe, the detachable via a clamping connection with a mixing tube 7 connected is.
  • the mixing tube 7, as a pipe part in the drawing in section is shown schematically, has a cylindrical wall part 7.1, 7.2 up.
  • wall part 7.2 is a cylindrical trained pipe socket with an annular groove for receiving a sealing ring or a pipe ring shown.
  • the Pipe socket 17 consists of a first part, as cylindrical recess 20 is formed, to which a Conically tapered part 21 connects.
  • the part 21 is Also referred to as a clamping part for receiving a also similarly shaped sleeve 4 is used.
  • the sleeve 4 consists of a first cylindrical trained pipe part 6, whose inner diameter is approximately the outer diameter of the front pipe socket 2.1 of Exhaust gas recirculation pipe part 2 corresponds.
  • the front end of the Sleeve 4 can be soldered, for example, with the pipe part 2.1 or shrunk.
  • To the cylindrical part 6 of Sleeve 4 is followed by a conically widening part 10 on and to the part 10 again a cylindrical tube part 11, which is provided with an inlet opening.
  • the pipe part 11 corresponds with its outer diameter in about the Inner diameter of the pipe socket 17, in which in his Ring groove an annular seal or O-ring seal 5 inserted is.
  • the closes Surface or the slope 20 of the flared Part of acting as a frictional connection clamping connection with the longitudinal central axis 22 of the exhaust gas recirculation pipe part 2 an angle ⁇ .
  • the angle ⁇ can be between 7 ° and 15 °, in advantageously between 8 ° and 12 °, preferably 10 ° be great to have a very good frictional connection between to ensure the parts to be joined.
  • the sleeve 4 is so with its two surfaces of the part 11 and the part 10 against the inner surfaces of the part 20 and 21 at. Since the sleeve 4 or the part 11 a gap between the surface of Exhaust gas recirculation pipe part 2 forms, one automatically receives a good cooling, allowing overheating of the sleeve 4 and thus the ring seal 5 is avoided.
  • the front end or the outlet opening 2.2 of the exhaust gas recirculation pipe part 2 at an angle ⁇ beveled.
  • a part of the exhaust gas according to Case 3 almost lossless in the main flow of fresh air introduced according to Part 18 in the mixing housing 7.
  • Another Improvement is achieved in that the front end 2.2 as far as angled or curved, that the Longitudinal axis of the pipe part 2 in approximately parallel to Longitudinal axis of the mixing housing 7 runs. This gives you a laminar inflow of the exhaust gas into the fresh air of Mixed housing 7.
  • a part of the Exhaust gas recirculation housing 2 via a bracket 12 in addition be secured.
  • the holder 12 with a U-shaped Holder part 14, which is the outer circumference of Part of the exhaust gas recirculation pipe part 2 surrounds.
  • the Bracket 2 with the pipe part 2 soldered or otherwise be firmly connected.
  • the other or second end of the Holder 12 is not by means of a drawing illustrated fastening bolt to a bore 13th connected, which via a tab 13.1 to the wall part 7.2 connected.
  • the angle ⁇ shown in the drawing can also be so be big like the angle ⁇ .
  • the Angle ⁇ in about 15 °.

Claims (5)

  1. Dispositif pour étancher une partie tubulaire (2) d'une conduite de recirculation de gaz d'échappement, comportant une douille (4) reçue dans une partie de paroi (7.2) d'une conduite tubulaire de recirculation de gaz d'échappement (7) qui présente une première partie tubulaire (6) reliée solidairement à la partie tubulaire (2) et réalisée cylindrique au moins dans la zone avant et à laquelle se raccorde une deuxième partie tubulaire (10) de diamètre plus grand qui comprend au niveau de son extrémité une deuxième partie tubulaire cylindrique (11) qui sert de surface d'appui pour un joint d'étanchéité annulaire (5) qui est reçu dans un manchon tubulaire (17),
    caractérisé en ce que
    entre la première et la deuxième partie tubulaire (6, 11) est prévue une partie de serrage (10) qui va en s'élargissant coniquement et qui, du fait de son introduction dans le manchon tubulaire (17), vient en appui par sa surface contre le manchon tubulaire (17) s'élargissant coniquement, pour qu'il se forme ainsi une liaison par serrage faisant office de liaison en coopération de friction.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'un angle α compris entre 7° et 15°, en particulier entre 8° et 12°, est défini entre l'axe médian (22) de la partie tubulaire (6) et la pente (20) de la partie de serrage (10) s'élargissant coniquement et faisant office de liaison en coopération de friction.
  3. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la partie tubulaire de recirculation de gaz d'échappement (2) est serrée dans un manchon tubulaire (17) prévu dans un boítier de mélange (7), ledit manchon présentant un perçage avec un alésage cylindrique (20) et une partie conique (21) qui s'y raccorde, dont la partie latérale définit avec l'axe médian (22) un angle qui est égal, légèrement plus petit ou légèrement plus grand que l'angle α.
  4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le manchon tubulaire (2.1) s'étendant jusque dans le boítier de mélange (7) est chanfreiné de telle sorte que son ouverture de sortie (2.2) s'étend en direction d'écoulement (18) de l'air frais.
  5. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la partie tubulaire de recirculation de gaz d'échappement (2) est reliée à une partie du boítier de mélange (7) au moyen d'une monture (12).
EP03014910A 2002-07-23 2003-07-01 Dispositif d'étanchéification d'un conduite des gaz d'échappement Expired - Fee Related EP1384867B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10233361A DE10233361A1 (de) 2002-07-23 2002-07-23 Vorrichtung zum Abdichten einer Abgasrohrleitung
DE10233361 2002-07-23

Publications (2)

Publication Number Publication Date
EP1384867A1 EP1384867A1 (fr) 2004-01-28
EP1384867B1 true EP1384867B1 (fr) 2005-01-26

Family

ID=29796515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014910A Expired - Fee Related EP1384867B1 (fr) 2002-07-23 2003-07-01 Dispositif d'étanchéification d'un conduite des gaz d'échappement

Country Status (2)

Country Link
EP (1) EP1384867B1 (fr)
DE (2) DE10233361A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101970830A (zh) 2008-01-24 2011-02-09 马克卡车公司 排气再循环混合器装置
JP5306039B2 (ja) * 2009-04-28 2013-10-02 日野自動車株式会社 Ｅｇｒガス混合装置
CN101598079A (zh) * 2009-07-21 2009-12-09 重庆隆鑫机车有限公司 摩托车发动机
CN102392726A (zh) * 2011-11-30 2012-03-28 重庆长安汽车股份有限公司 一种纵置发动机排气歧管加强构件
FR3001262A1 (fr) * 2013-01-23 2014-07-25 Renault Sa "agencement pour le raccordement d'une conduite de recirculation de gaz d'echappement avec un circuit d'admission de moteur a combustion interne"
FR3022945B1 (fr) * 2014-06-25 2016-08-12 Valeo Systemes Thermiques Systeme de recirculation de gaz d'echappement.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2706976B1 (fr) * 1993-06-25 1995-10-20 Solvay
US5492104A (en) * 1994-11-03 1996-02-20 General Motors Corporation Exhaust gas recirculation for an internal combustion engine
JPH0968118A (ja) * 1995-08-29 1997-03-11 Mitsubishi Eng Plast Kk 樹脂製吸気マニホールド用の排気ガス再循環装置
GB2324338B (en) * 1996-09-18 1999-05-19 Nissan Motor Exhaust gas recirculation system having a plastic intake passage
DE20014711U1 (de) * 2000-08-25 2000-11-23 Mann & Hummel Filter Vorrichtung zur Rückführung von Gas an einem Verbrennungsmotor

Also Published As

Publication number Publication date
DE10233361A1 (de) 2004-02-05
DE50300274D1 (de) 2005-03-03
EP1384867A1 (fr) 2004-01-28

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