EP3828397B1 - Unité de raccordement - Google Patents

Unité de raccordement Download PDF

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Publication number
EP3828397B1
EP3828397B1 EP20203189.4A EP20203189A EP3828397B1 EP 3828397 B1 EP3828397 B1 EP 3828397B1 EP 20203189 A EP20203189 A EP 20203189A EP 3828397 B1 EP3828397 B1 EP 3828397B1
Authority
EP
European Patent Office
Prior art keywords
connection
counter
connection element
pipe
opening
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
EP20203189.4A
Other languages
German (de)
English (en)
Other versions
EP3828397A1 (fr
Inventor
Benjamin Röhr
Elke Preisser
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.)
Eberspaecher Exhaust Technology GmbH and Co KG
Original Assignee
Purem 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 Purem GmbH filed Critical Purem GmbH
Publication of EP3828397A1 publication Critical patent/EP3828397A1/fr
Application granted granted Critical
Publication of EP3828397B1 publication Critical patent/EP3828397B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
    • 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
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing

Definitions

  • connection unit for connecting two exhaust-gas-carrying assemblies of an exhaust system of an internal combustion engine, comprising a ring-disc-like connection element with a connection side to be positioned adjacent to a counter-connection element to be connected to the connection element and a through-opening bordered by an inner peripheral surface of the connection element as well as a connecting pipe inserted into the reach-through opening and extending in the direction of a longitudinal pipe axis.
  • connection units are used in exhaust systems of internal combustion engines in vehicles in order to produce a fixed and essentially exhaust gas-tight connection between different exhaust gas-carrying assemblies.
  • such connecting units are to be produced in the transition area between a so-called "hot end”, i.e. an area of an exhaust system carrying very hot exhaust gases near an internal combustion engine, and a "cold end”, i.e. an area of an exhaust system carrying exhaust gases which have already cooled down somewhat.
  • connection unit is known from JP 2000 136722 A known.
  • a connecting tube partially engaging in a through-opening of a ring-disc-like connecting element has a plurality of circular welding openings following one another in the circumferential direction, which are partially covered by an inner peripheral surface of the through-opening.
  • a weld seam running on the outside of the connecting pipe and along an end face of the connecting element engages in the weld openings from the outside.
  • connection assembly according to the preamble of claim 5 with a connection unit, in which a connection tube is inserted into a passage opening of an annular disk-like Connecting element is used in such a way that this survives on a connecting side of the connecting element.
  • a counter-connection element of the connection assembly to be connected to the connection element with a ring-like sealing element interposed has an opening which, when the connection element and counter-connection element are connected to one another, is opposite the access opening in such a way that the part of the connection pipe protruding on the connection side of the connection element does not engage in it .
  • connection unit for connecting two exhaust gas-carrying assemblies of an exhaust system of an internal combustion engine, which meets the requirements for exhaust gas tightness while being easy to assemble.
  • connection unit is characterized in that the connection tube is connected to the connection element in the area of the inner peripheral surface by welding.
  • the connection pipe can protrude with a centering section on the connection side of the connection element.
  • connection unit Various advantageous aspects are realized in this connection unit.
  • the connection of the connecting element to the connecting tube in the area of the inner peripheral surface of the connecting tube ensures that Production of the welded joint deformations in particular of the connecting element can be largely avoided. Very good gas-tightness is thus achieved when a connection is produced between the connecting element and a counter-connecting element.
  • the aspect of providing a centering section on the connection unit facilitates the assembly of an exhaust system by means of the centering function introduced by means of this centering section with respect to a counter-connection element.
  • the connecting pipe has at least one welding opening that completely penetrates a pipe wall of the connecting pipe in its length region axially overlapped by the inner peripheral surface, and the connecting pipe is formed by a welding opening in the at least one welding opening Welding connected to the connecting element.
  • the connecting tube has a plurality of welded openings that follow one another in the circumferential direction about the longitudinal axis of the tube.
  • At least one, preferably each, weld opening is elongated in the circumferential direction around the longitudinal axis of the pipe.
  • there is a circumferential distance of in the circumferential direction around the longitudinal axis of the pipe successive welding openings is in the range from 2 mm to 6 mm, or/and when an axial width of at least one, preferably each welding opening is in the range from 2 mm to 3 mm.
  • connection assembly for connecting two exhaust-gas-carrying assemblies of an exhaust system of an internal combustion engine according to claim 5.
  • This comprises a connection unit with the structure according to the invention described above and an annular disk-like element to be positioned with a counter-connection side facing the connection element of the connection unit and/or lying against it Counter-connecting element, a centering opening corresponding to the reach-through opening being provided in the counter-connecting element.
  • the connecting assembly can comprise at least one connecting member for firmly connecting the connecting element to the counter-connecting element.
  • the at least one connecting member comprises a connecting bolt that passes through the connecting element and/or the counter-connecting element.
  • the centering function can be provided particularly efficiently in that, when the counter-connection element is connected to the connection element, the reach-through opening and the centering opening are essentially congruent with one another.
  • congruent means that the two openings are provided or arranged with the same opening cross-section geometry, the same opening cross-section size and the same radial positioning with respect to the longitudinal axis of the pipe.
  • the centering section of the connecting tube can engage in the centering opening when the counter-connecting element is connected to the connecting element.
  • the invention further relates to an exhaust system, comprising a connecting assembly constructed according to the invention, a first exhaust-carrying assembly being connected to the connecting pipe and a second exhaust-carrying assembly being connected to the counter-connecting element.
  • FIG. 1 is a partial longitudinal sectional view of an exhaust system for an internal combustion engine in a vehicle.
  • a section of an exhaust system, generally designated 10, for an internal combustion engine of a vehicle can be seen.
  • the 1 the transition between a so-called “hot end” 12 and a so-called “cold end” 14 of the exhaust system 10.
  • two, for example, tubular, exhaust-carrying assemblies 16, 18 of the exhaust system 10 are connected to one another by a connecting assembly 20.
  • connection assembly 20 comprises a connection unit 22 that is preferably connected to the "hotend” 12, i.e. the tubular assembly 16, and a ring-disc-like one that is connected to the connection unit 22 in the manner described below and connected to the "coldend” 14 or the assembly 18 Counter-connector 24.
  • the connecting unit 22 comprises a connecting element 26 to be connected to the counter-connecting element 24.
  • This is also designed in the manner of an annular disk and has a through-opening 28 which is shaped like a circle, for example.
  • a preferably substantially cylindrical connecting pipe 30 extending in the direction of a pipe longitudinal axis L is inserted into the reach-through opening 28 .
  • the outer diameter of the pipe wall 32 of the connecting pipe 30 is matched to the inner diameter of the access opening 28 in such a way that when the connecting pipe 30 is inserted into the access opening 28 , it is accommodated in the access opening 28 essentially without play.
  • the connecting tube 30 in the example shown has a plurality of welding openings 38, preferably designed in the form of slotted holes, which follow one another in the circumferential direction about the longitudinal axis L.
  • These welding openings 38 pass through the pipe wall 32 of the connecting pipe 30 so that basically in the area of the welding openings 38 when the connecting pipe 30 is inserted into the reach-through opening 28 the inner peripheral surface 36 is exposed towards the inside, ie is not covered.
  • a weld 37 is formed in the region of each of the welding openings 38, preferably essentially filling them completely and thus creating a material-locking connection between the connecting tube 30 and the connecting element 26.
  • welds 37 formed in the welding openings 38 can be guided over the webs 39 in the circumferential direction in order to to form welds 41 there as well.
  • the welds 41 running in the area of these webs 39 along the inner peripheral surface of the connecting tube 30 also lead to a material connection between the connecting tube 30 on its outer peripheral surface 34 and the connecting element 26 on its inner peripheral surface 36 due to the heat input that occurs when these welds are produced Circumferentially completely uninterrupted welding between the connecting pipe 30 and the connecting element 26, it is advantageous if the webs 41 have a length of about 2 mm to 6 mm in the circumferential direction. It is also advantageous if the welding openings 38 have an axial width, ie an extent in the direction of the longitudinal axis L of the pipe, in the range of 2 mm to 3 mm.
  • the connecting tube 30 projects beyond the connecting element 26 with a centering section 40 on a connecting side 42 of the connecting element 26 to be positioned facing the counter-connecting element 24 .
  • a centering opening 44 is formed in the counter-connecting element 24 to correspond to the reach-through opening 28 of the connecting element 26 .
  • the connecting pipe 30 engages with its centering section 40 in the centering opening 44 in this way A that the outer peripheral surface 34 of the connecting pipe 30 in the region of the centering section 40 can abut against an inner peripheral surface 48 of the counter-connecting element 24 bordering the centering opening 44, so that a substantially gas-tight connection between the connecting tube 30 and the counter-connecting element 24 is also created in this area.
  • connecting elements 50 preferably designed as screw bolts. These can reach through connecting bolt openings 52 provided in connecting element 26, for example, and can also reach through connecting bolt openings 52 provided in counter-connecting element 24, so that a firm cohesion can be established at the ends protruding beyond counter-connecting element 24, for example by applying nuts or the like.
  • the connecting organ openings 54 in the counter-connecting element 24 can be designed as internally threaded openings into which the connecting organs 50 can be screwed in order to produce a firm connection.
  • the connecting elements 50 press the connecting element 26 with its connecting side 42 or an essentially planar surface provided there against the counter-connecting side 46 or a surface of the counter-connecting element 24 provided there, so that an im Substantial gas-tight connection is achieved. This can be aided by positioning a sealing element between the connection side 42 and the opposite connection side 46 . Since the connection of the connecting pipe 30 to the connecting element 26 is welded in the region of the inner peripheral surface 36 of the connecting element 26, a deformation of the connecting element 26 caused by the heating occurring during welding is practically ruled out. This ensures that this is also provided with high precision in the area of its connection side 42 and thus a gas-tight connection can be guaranteed in contact interaction with the counter-connection element 24 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Claims (10)

  1. Unité de raccordement pour raccorder deux modules de transport de gaz d'échappement d'un système d'échappement d'un moteur à combustion interne, comprenant :
    - un élément de raccordement (26) en forme de rondelle avec un côté de raccordement (42) devant être positionné de manière à faire face à un contre-élément de raccordement (24) devant être raccordé à l'élément de raccordement (26) ou/et à être en contact avec celui-ci et avec une ouverture de passage (28) bordée par une surface circonférentielle intérieure (36) de l'élément de raccordement (26), et
    - un tuyau de raccordement (30), qui est inséré dans l'ouverture de passage (28) et s'étend dans la direction d'un axe longitudinal du tuyau (L),
    dans lequel le tuyau de raccordement (30) est relié à l'élément de raccordement (26) dans la zone de la surface circonférentielle intérieure (36) par soudage, caractérisé en ce que le tuyau de raccordement (30) comprend dans sa zone de longueur recouverte axialement par la surface circonférentielle intérieure (36) une pluralité d'ouvertures de soudage (38) allongées dans la direction circonférentielle et se succédant autour de l'axe longitudinal du tuyau (L), traversant complètement une paroi de tuyau (32) du tuyau de raccordement (30), et que le tuyau de raccordement (30) est relié à l'élément de raccordement (26) par une soudure (37) formé dans ladite au moins une ouverture de soudure (38).
  2. Unité de raccordement selon la revendication 1, caractérisée en ce que le tuyau de raccordement (30) fait saillie avec une section de centrage (40) sur le côté de raccordement (42) de l'élément de raccordement (26).
  3. Unité de raccordement selon la revendication 1 ou 2, caractérisée en ce qu'une soudure (41) reliant les soudures (37) formées dans lesdites ouvertures de soudure (38) dans la direction circonférentielle est formé au-delà de la bande (39) dans la direction circonférentielle (39) le long de la surface circonférentielle intérieure (36) dans la zone d'au moins une et de préférence de chaque bande (39) formée entre deux desdites ouvertures de soudure (38) se suivant directement dans la direction circonférentielle.
  4. Unité de raccordement selon l'une des revendications 1 à 3, caractérisée en ce qu'une distance circonférentielle des ouvertures de soudure (38) se suivant directement dans la direction circonférentielle autour de l'axe longitudinal du tuyau (L) est comprise entre 2 mm et 6 mm, ou/et qu'une largeur axiale d'au moins une et de préférence de chaque ouverture de soudure (38) est comprise entre 2 mm et 3 mm.
  5. Module de connexion pour connecter deux modules de transport de gaz d'échappement (16, 18) d'un système d'échappement d'un moteur à combustion interne, comprenant une unité de connexion (22) selon l'une des revendications précédentes et un élément de contre-connexion (24) en forme de rondelle, qui doit être positionné de manière à faire face à l'élément de connexion (26) de l'unité de connexion (22) avec un côté de contre-connexion (46) ou/et à être en contact avec celui-ci, dans lequel une ouverture de centrage (44) correspondant à l'ouverture de passage (28) est prévue dans l'élément de contre-connexion (24).
  6. Module de connexion selon la revendication 5, caractérisée par au moins un membre de connexion (50) pour connecter de manière permanente l'élément de connexion (26) à l'élément de contre-connexion (24).
  7. Module selon la revendication 6, caractérisée en ce que ledit au moins un membre de connexion (50) comprend un boulon de connexion traversant l'élément de connexion (26) ou/et l'élément de contre-connexion (24).
  8. Module selon l'une des revendications 5 à 7, caractérisée en ce que lorsque l'élément de contre-connexion (24) est connecté à l'élément de connexion (26), l'ouverture de passage (28) et l'ouverture de centrage (44) sont essentiellement congruentes l'une par rapport à l'autre.
  9. Module de connexion selon l'une des revendications 5 à 8, si l'on se réfère à la revendication 2, caractérisée en ce que, lorsque l'élément de contre-connexion (24) est connecté à l'élément de connexion (26), la section de centrage (40) du tuyau de connexion (30) s'engrène avec l'ouverture de centrage (44).
  10. Système d'échappement comprenant un ensemble de raccordement (20) selon l'une des revendications 5 à 9, dans lequel un premier module de transport de gaz d'échappement (16) est raccordé au tuyau de raccordement (30) et un second module de transport de gaz d'échappement (18) est raccordé à l'élément de contre-connexion (24).
EP20203189.4A 2019-11-26 2020-10-22 Unité de raccordement Active EP3828397B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019131891.2A DE102019131891A1 (de) 2019-11-26 2019-11-26 Verbindungseinheit

Publications (2)

Publication Number Publication Date
EP3828397A1 EP3828397A1 (fr) 2021-06-02
EP3828397B1 true EP3828397B1 (fr) 2023-09-06

Family

ID=73005492

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20203189.4A Active EP3828397B1 (fr) 2019-11-26 2020-10-22 Unité de raccordement

Country Status (4)

Country Link
US (1) US11725568B2 (fr)
EP (1) EP3828397B1 (fr)
CN (1) CN112943435B (fr)
DE (1) DE102019131891A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2623876B2 (ja) * 1989-12-18 1997-06-25 日産自動車株式会社 排気系接続装置
EP0759502B2 (fr) 1995-08-16 2003-03-26 Benteler Ag Système compensateur
JP2000136722A (ja) * 1998-11-02 2000-05-16 Yutaka Giken Co Ltd 二重排気管
JP3680993B2 (ja) 2001-05-14 2005-08-10 本田技研工業株式会社 多気筒内燃機関の排気マニホールド集合部接続構造
DE10158877A1 (de) * 2001-11-30 2003-06-12 Iwka Balg Und Kompensatoren Te Verfahren und Vorrichtung zum Verbinden von Teilen einer Abgasanlage
DE102014103314B4 (de) 2014-03-12 2018-07-12 Tenneco Gmbh Abgasrohrflansch, Gruppenflansch und Abgasanlage
JP6743803B2 (ja) * 2017-12-19 2020-08-19 株式会社豊田自動織機 排気ガス浄化装置
CN109209594A (zh) * 2018-11-16 2019-01-15 十堰楚欣达汽车科技股份有限公司 一种新型商用车排气管接口

Also Published As

Publication number Publication date
CN112943435B (zh) 2023-06-06
DE102019131891A1 (de) 2021-05-27
US20210156293A1 (en) 2021-05-27
EP3828397A1 (fr) 2021-06-02
US11725568B2 (en) 2023-08-15
CN112943435A (zh) 2021-06-11

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