EP1726794A1 - Silencieux d'échappement et procédé de fabrication - Google Patents

Silencieux d'échappement et procédé de fabrication Download PDF

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Publication number
EP1726794A1
EP1726794A1 EP06113764A EP06113764A EP1726794A1 EP 1726794 A1 EP1726794 A1 EP 1726794A1 EP 06113764 A EP06113764 A EP 06113764A EP 06113764 A EP06113764 A EP 06113764A EP 1726794 A1 EP1726794 A1 EP 1726794A1
Authority
EP
European Patent Office
Prior art keywords
pipe
section
exhaust pipe
pipe section
jacket
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.)
Withdrawn
Application number
EP06113764A
Other languages
German (de)
English (en)
Inventor
Harry Seiler
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 Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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 J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1726794A1 publication Critical patent/EP1726794A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • 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
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers

Definitions

  • the present invention relates to a silencer for an exhaust system of an internal combustion engine, in particular in a motor vehicle.
  • the invention also relates to a method for producing a reflection chamber permeable to airborne end portion of an exhaust pipe, in particular for a muffler of an exhaust system of an internal combustion engine.
  • Mufflers for exhaust systems are well known.
  • such mufflers may be disposed in a housing of the muffler, an exhaust pipe having an air-sound permeable end portion.
  • this end portion may be enveloped by a jacket, in order to form a reflection chamber in this way.
  • exhaust gases flow through the muffler and through the exhaust pipe. Airborne sound spreads in the exhaust gas. Airborne sound can enter the reflection chamber through the end section which is permeable to airborne sound, which results in a damping of the airborne sound in a predetermined frequency range.
  • the present invention is concerned with the problem of finding a way for a provided with a reflection chamber exhaust pipe, which is characterized in particular by an inexpensive manufacturability.
  • the invention is based on the general idea to produce the jacket of the reflection chamber and the end portion of the exhaust pipe in one piece. In this way, no separate jacket must be attached to the exhaust pipe for the assembly of the muffler.
  • the integral design thus simplifies assembly and thereby reduces the manufacturing costs for the silencer.
  • the jacket is formed by a bent back over the end portion or rolled back pipe section of the exhaust pipe.
  • both the coat as also the end portion in each case an integral part of the exhaust pipe.
  • the outer pipe section then forms the jacket of the reflection chamber, while the inner tube section then forms the end section of the exhaust pipe which is permeable to airborne sound.
  • the realization of the reflection chamber by bending back or rolling back a pipe section of the exhaust pipe can be realized particularly inexpensive and process reliable. Furthermore, there are no tolerance problems for the formation of the reflection chamber. In addition, eliminates an additional step, with a separate jacket would have to be attached to the exhaust pipe.
  • a silencer 1 according to the invention comprises at least one exhaust pipe 2.
  • This exhaust pipe 2 is designed here as an outlet pipe, which is led out of a housing 3 of the silencer 1.
  • the silencer 1 here also comprises an inlet tube 4 and at least one connecting tube 5.
  • three chambers are exemplarily formed, namely an inlet chamber 6, an outlet chamber 7 and a damper chamber 8.
  • the inlet tube 4 penetrates the outlet chamber 7 and the damper chamber 8 and terminates in the inlet chamber 6.
  • the at least one connecting pipe 5 penetrates the damper chamber 8 and connects the inlet chamber 6 with the outlet chamber 7.
  • the outlet pipe or the exhaust pipe 2 starts in the outlet chamber 7 and penetrates the damper chamber 8 and the inlet chamber 6.
  • the inlet pipe 4 can be made permeable to airborne sound in the region of the damper chamber 8, which can be realized for example by means of a perforation 9.
  • This perforation 9 or the permeability to airborne sound is symbolized in Fig. 1 by double arrows.
  • the at least one connecting tube 5 in the region of the damper chamber 8 can also be made permeable to airborne sound. Preferably, this is also achieved by means of a perforation 9, also symbolized by double arrows.
  • a suitable damper material not shown here may be arranged.
  • the exhaust pipe 2 has a reflection chamber 10.
  • an end portion 11 of the exhaust pipe 2 is enveloped by a jacket 12, in such a way that forms radially between the end portion 11 and the jacket 12, the reflection chamber 10.
  • the end portion 11 is designed permeable to airborne sound, which in Figs. again symbolized by double arrows.
  • the permeability to airborne sound can be achieved by a suitable perforation 9 of the end portion 11.
  • the jacket 12 and the end section 11 are now produced in one piece. This means that the jacket 12 with respect to the end portion 11 and with respect to the exhaust pipe 2 is not a separate component, but the jacket 12 is an integral part of the exhaust pipe second
  • the shell 12 is formed by a pipe section 13 of the exhaust pipe 2, which is bent back radially outward at the end portion 11 via the end portion 11, preferably rolled back, and thereby surrounds or envelops the end portion 11.
  • the jacket 12 or the jacket 12 forming the tube section 13 at its end remote from an opening 14 of the exhaust pipe 2 an annular collar 15 which projects radially inwardly and abuts the exhaust pipe 2.
  • the reflection chamber 10 is closed at the end remote from the opening 14.
  • the reflection chamber 10 is necessarily closed by the seamless transition between the inner end portion 11 and the outer shell 12.
  • the annular collar 15 may in principle rest loosely on the exhaust pipe 2. Leakage is not critical here. In principle, however, it is possible by suitable measures the annular collar 15th gas-tight to the exhaust pipe 2 and / or attach to the exhaust pipe 2. For example, this can be achieved by a corresponding crimping and / or by soldering and / or welding.
  • the airborne permeable or perforated end portion 11 is formed by the pipe section 13, which in this case is bent back radially inside through the jacket 12, in particular rolled back, to thereby form the reflection chamber 10.
  • the annular collar 15 protrudes radially outwards from the end section 11 and lies on the inside of the exhaust pipe 2. Again, in principle, a loose or gas-tight and / or fixed contact between the annular collar 15 and the exhaust pipe 2 is possible.
  • the second pipe section 17 is rendered permeable to airborne sound, which is again symbolized here by the double arrows.
  • the second pipe section 17 is provided with a perforation 9.
  • the first pipe section 13 is bent back outside over the second pipe section 17, preferably rolled back, whereby the state shown in Fig. 3c is achieved.
  • the annular collar 15 can be formed and brought into abutment with the exhaust pipe 2.
  • the finished exhaust pipe 2 is present, in which both pipe sections 13, 17 begin at the opening 14 of the exhaust pipe 2.
  • the inner second tube section 17 then forms the end section 11, while the outer first tube section forms the jacket 12.
  • the reflection chamber 10 is then formed.
  • the exhaust pipe 2 configured with the reflection chamber 10 can also be produced as follows:
  • the outlet tube 2 In the initial state according to FIG. 4 a, the outlet tube 2 'again has the tube opening 16, the first tube section 13 and the second tube section 17.
  • the first pipe section 13 for airborne sound is now designed to be permeable and, in particular, provided with a perforation 9.
  • the first pipe section 13 is bent back inward through the second pipe section 17, preferably rolled back. Simultaneously or subsequently, the annular collar 15 is formed and brought to the exhaust pipe 2 for conditioning. In the finished state of the exhaust pipe 2, both pipe sections 13, 17 pass from the opening 14 here as well.
  • the first pipe section 13 is located inside and forms the end portion 11 of the exhaust pipe 2, while the second pipe section 17 is outside in this variant and forms the shell 12 in the sequence. Between the jacket 12 and the end portion 11, the reflection chamber 10 is formed again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP06113764A 2005-05-27 2006-05-10 Silencieux d'échappement et procédé de fabrication Withdrawn EP1726794A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005024831A DE102005024831A1 (de) 2005-05-27 2005-05-27 Schalldämpfer für eine Abgasanlage und Herstellungsverfahren

Publications (1)

Publication Number Publication Date
EP1726794A1 true EP1726794A1 (fr) 2006-11-29

Family

ID=36579729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06113764A Withdrawn EP1726794A1 (fr) 2005-05-27 2006-05-10 Silencieux d'échappement et procédé de fabrication

Country Status (3)

Country Link
US (1) US20060266580A1 (fr)
EP (1) EP1726794A1 (fr)
DE (1) DE102005024831A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008015016B3 (de) * 2008-03-19 2009-08-27 Audi Ag Schalldämpferanordnung für eine Abgasanlage eines Kraftfahrzeuges
JP5532043B2 (ja) * 2010-12-24 2014-06-25 トヨタ自動車株式会社 車両の消音装置
US8418805B1 (en) * 2012-06-08 2013-04-16 Hyundai Motor Company Muffler for vehicle
KR20140066508A (ko) * 2012-11-23 2014-06-02 현대자동차주식회사 차량용 머플러
KR101526753B1 (ko) * 2013-12-19 2015-06-05 현대자동차주식회사 차량용 소음기

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697668A (en) * 1986-01-13 1987-10-06 Nelson Industries Inc. Aspirating muffler
EP0564692A2 (fr) * 1992-04-10 1993-10-13 Ap Parts Manufacturing Company Silencieux formé par estampage à chambre d'expansion en ligne et des conduites d'écoulement effectif formées en arc de cercle

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US452020A (en) * 1891-05-12 Muffler
US3498407A (en) * 1967-09-26 1970-03-03 Walker Mfg Co Muffler partition assembly
US3613830A (en) * 1969-07-18 1971-10-19 Walker Mfg Co One-piece tube and shell assembly for silencer
DE2529496A1 (de) * 1975-07-02 1977-01-20 Bohner & Koehle Verfahren zum boerdeln des stirnseitigen bereichs von rotationssymmetrischen werkstuecken und vorrichtung zur durchfuehrung des verfahrens
US4466566A (en) * 1981-08-26 1984-08-21 Koppy Corporation Method of forming a thin walled annular channel
DE3422040A1 (de) * 1984-06-14 1985-12-19 Heinz-Eckhard Dipl.-Ing. 6100 Darmstadt Engel Stuelp-umformverfahren zur herstellung von doppelwandigen zylindrischen werkstuecken sowie umformwerkzeug hierfuer
US5224973A (en) * 1992-04-20 1993-07-06 Donaldson Company, Inc. Filter cartridge for trap apparatus
JPH06344042A (ja) * 1993-06-04 1994-12-20 Calsonic Corp カールパイプ成形方法およびその装置
DE19752772C2 (de) * 1997-11-28 1999-09-02 Daimler Chrysler Ag Verfahren zur Herstellung eines mit einem Abzweigstutzen versehenen luftspaltisolierten Abgasrohres
DE19854284C1 (de) * 1998-11-25 2000-02-24 Loettgers Gmbh & Co Kg W Verfahren zur Herstellung von Rohrprofilelementen mit angestauchtem Kopfende sowie als Schalldämpferaufhängung ausgebildetes Rohrprofilelement hergestellt nach diesem Verfahren
US6453558B1 (en) * 2001-04-06 2002-09-24 Arvinmeritor, Inc. Method of locking together exhaust components
US6467570B1 (en) * 2001-05-15 2002-10-22 Arvin Technologies, Inc. Spark arrester with spark filter
JP3802803B2 (ja) * 2001-12-19 2006-07-26 本田技研工業株式会社 車両用排気装置
US20040052697A1 (en) * 2002-09-18 2004-03-18 Mcintosh Loel E. Catalytic converter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697668A (en) * 1986-01-13 1987-10-06 Nelson Industries Inc. Aspirating muffler
EP0564692A2 (fr) * 1992-04-10 1993-10-13 Ap Parts Manufacturing Company Silencieux formé par estampage à chambre d'expansion en ligne et des conduites d'écoulement effectif formées en arc de cercle

Also Published As

Publication number Publication date
DE102005024831A1 (de) 2006-11-30
US20060266580A1 (en) 2006-11-30

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