EP1022445B1 - Système de conduits de gaz en particulier système de conduits de gaz d'échappement pour un moteur automobile à combustion interne - Google Patents

Système de conduits de gaz en particulier système de conduits de gaz d'échappement pour un moteur automobile à combustion interne Download PDF

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Publication number
EP1022445B1
EP1022445B1 EP99124827A EP99124827A EP1022445B1 EP 1022445 B1 EP1022445 B1 EP 1022445B1 EP 99124827 A EP99124827 A EP 99124827A EP 99124827 A EP99124827 A EP 99124827A EP 1022445 B1 EP1022445 B1 EP 1022445B1
Authority
EP
European Patent Office
Prior art keywords
section
gas
flow cross
gas conduit
flow
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 - Lifetime
Application number
EP99124827A
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German (de)
English (en)
Other versions
EP1022445A1 (fr
Inventor
Bernd Dr. Hagerodt
Gerhard Hoheisel
Holger Porada
Stephan Dr. Bohlen
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1022445A1 publication Critical patent/EP1022445A1/fr
Application granted granted Critical
Publication of EP1022445B1 publication Critical patent/EP1022445B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation

Definitions

  • the invention relates to a gas line system according to the preamble of Claim 1.
  • the arrangement according to which also serves to supply air to the hot exhaust gases WO 97/49904 contains for sucking in fresh air through a corresponding one Annular gap between successive exhaust pipes not a diffuser, but one turbine downstream of a catalytic converter.
  • the invention is based, in general a gas line system in the task Create cases in which the problem of vibration transmission occurs, and train this gas pipe system so that without affecting the tightness of the Systems based on rigid connections of the different parts or areas of the Difficulties based on the gas line system are avoided.
  • the invention thus provides for the prevention of a vibration or Transmission of motion divides the gas pipe system into at least two Direction of flow of gases in front of successive parts, forming gaps merge into each other without contact.
  • This gap formation has a disadvantage in itself because it can be described as a specific leak in the gas pipe system.
  • the second gas line is in the flow direction as Diffuser panel designed by converting speed energy into Pressure energy ensures gas intake from the environment through the gap.
  • This gap provides due to the lack of rigid supports between the gas lines on the one hand for the fact that a direct movement or vibration transmission via the Gas line system is prevented, and on the other hand it enables relative movements the components of the gas pipe system to each other, so that a suspension for example on vehicle parts that are somewhat larger when the vehicle is in operation Executing relative movements to each other becomes possible.
  • the gas line system contains the first gas line 1, and the second gas line 2, whose front end region with respect to the gas flow, here an exhaust gas flow 3 forms a larger flow cross section F1 than the first gas line 1, so that this while maintaining a gap 4 in the first area 5 of the second gas line 2 protrudes. While this first line area 5 has a constant cross section, the flow cross section of the adjoining region 6 of the second increases Gas line 2 from a value F2, which is identical to the value F1, continuously on to to a maximum value F3.
  • the area has a length I1, the area 6 a length 12.
  • the flow cross section of the gap 4 be at most about 80% of the flow cross section of the first region 5.
  • the maximum flow cross section F3 of the outlet area 6 should be smaller than the flow cross-section in which a disruptive flow separation would occur. As has been shown, it is advantageous if the maximum Flow cross section F3 about 100 mm after the area 5 double Flow cross section F2 of the inlet area 5 corresponds. Basically you can say that the smaller the diffuser, the better the function Flow cross-section of the gap; this contactless decoupling through the gap understandably, however, must not be lost.
  • gas lines 1 and 2 are not must necessarily have round cross sections, so the gap 4 also one of the shape of the washer can graze.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Claims (3)

  1. Système de conduits de gaz pour un moteur à combustion interne entraínant un véhicule automobile, avec deux conduits de gaz (1, 2) se succédant sensiblement dans le sens de l'écoulement (3), parmi lesquels le premier conduit (1) le plus proche de la source de gaz pénètre sans contact direct par une région d'extrémité, en laissant une fente (4), dans la région d'extrémité correspondante, présentant une plus grande ouverture libre, du second conduit de gaz (2), qui forme la région d'extrémité d'une installation d'échappement d'un véhicule automobile et qui a la forme d'un tuyau de diffuseur avec une section transversale d'écoulement augmentant en continu dans le sens de l'écoulement (3), caractérisé en ce que les deux conduits de gaz (1, 2) sont fixés à des parties du véhicule, qui exécutent des mouvements relatifs pendant la marche, et en ce que les régions d'extrémité des conduits de gaz (1, 2) qui pénètrent l'une dans l'autre sont en communication sans transmission de mouvements et de vibrations.
  2. Système de conduits de gaz suivant la revendication 1, caractérisé en ce que le second conduit de gaz (2) présente une région d'entrée (5), ayant une section transversale d'écoulement (F2) constante sur sa longueur, tournée vers le premier conduit de gaz (1) et ensuite une région de sortie (6) ayant une section transversale d'écoulement augmentant en continu, dans lequel la section transversale d'écoulement formée par la fente (4) vaut au maximum environ 80 % de la section transversale d'écoulement (F2) de la région d'entrée (5), tandis que la section transversale d'écoulement maximale (F3) de la région de sortie (6) présente des dimensions plus petites qu'une section transversale d'écoulement dans laquelle il se produit un décollement gênant de l'écoulement.
  3. Système de conduits de gaz suivant la revendication 2, caractérisé en ce que la section transversale d'écoulement maximale (F3) à environ 100 mm derrière la région d'entrée (5) correspond au double de la section transversale d'écoulement (F2) de la région d'entrée (5).
EP99124827A 1999-01-21 1999-12-14 Système de conduits de gaz en particulier système de conduits de gaz d'échappement pour un moteur automobile à combustion interne Expired - Lifetime EP1022445B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19902310 1999-01-21
DE19902310A DE19902310A1 (de) 1999-01-21 1999-01-21 Gasleitungssystem, insbesondere Abgasleitungssystem für eine Fahrzeug-Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP1022445A1 EP1022445A1 (fr) 2000-07-26
EP1022445B1 true EP1022445B1 (fr) 2002-11-20

Family

ID=7894969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99124827A Expired - Lifetime EP1022445B1 (fr) 1999-01-21 1999-12-14 Système de conduits de gaz en particulier système de conduits de gaz d'échappement pour un moteur automobile à combustion interne

Country Status (3)

Country Link
EP (1) EP1022445B1 (fr)
AT (1) ATE228205T1 (fr)
DE (2) DE19902310A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016106820A1 (de) 2016-02-19 2017-08-24 Volkswagen Ag Luftführung eines Landfahrzeuges mit einer Abgasanlage mit zumindest einem Abgasendrohr sowie ein mit einer solchen Luftführung ausgestattetes Landfahrzeug
DE102016110982A1 (de) 2016-06-15 2017-12-21 Volkswagen Ag Luftführung eines Kraftfahrzeuges

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080087006A1 (en) * 2006-10-11 2008-04-17 International Engine Intellectual Property Company , Llc Tailpipe exhaust gas mixer and method
JP5223510B2 (ja) * 2008-07-09 2013-06-26 スズキ株式会社 車両の排気装置
DE102016213381A1 (de) 2016-07-21 2018-01-25 Thyssenkrupp Ag Abgasausstoßvorrichtung für ein Wasserfahrzeug

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817030A (en) * 1973-06-26 1974-06-18 Us Army Radiant energy suppressor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3857458A (en) * 1972-09-11 1974-12-31 Toyo Kogyo Co Exhaust gas outlet means for an internal combustion engine
DE3010598C2 (de) * 1980-03-20 1984-05-24 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Durch Umgebungsluft gekühltes Abgasrohr
DE9214001U1 (de) * 1991-10-17 1992-12-24 Fa. J. Eberspächer, 7300 Esslingen Endrohrinjektor
FR2750163B1 (fr) * 1996-06-25 1998-08-07 Teboul Daniel Centrale de filtration electrostatique autonome incorporee dans un vehicule a moteur a explosion fonctionnant au gazole ou a l'essence

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3817030A (en) * 1973-06-26 1974-06-18 Us Army Radiant energy suppressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016106820A1 (de) 2016-02-19 2017-08-24 Volkswagen Ag Luftführung eines Landfahrzeuges mit einer Abgasanlage mit zumindest einem Abgasendrohr sowie ein mit einer solchen Luftführung ausgestattetes Landfahrzeug
DE102016110982A1 (de) 2016-06-15 2017-12-21 Volkswagen Ag Luftführung eines Kraftfahrzeuges

Also Published As

Publication number Publication date
ATE228205T1 (de) 2002-12-15
DE59903460D1 (de) 2003-01-02
EP1022445A1 (fr) 2000-07-26
DE19902310A1 (de) 2000-07-27

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