EP1338767A1 - Insert de silencieux préformé - Google Patents

Insert de silencieux préformé Download PDF

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Publication number
EP1338767A1
EP1338767A1 EP03003092A EP03003092A EP1338767A1 EP 1338767 A1 EP1338767 A1 EP 1338767A1 EP 03003092 A EP03003092 A EP 03003092A EP 03003092 A EP03003092 A EP 03003092A EP 1338767 A1 EP1338767 A1 EP 1338767A1
Authority
EP
European Patent Office
Prior art keywords
chamber segments
silencer
chamber
insert according
silencer insert
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Withdrawn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
EP03003092A
Other languages
German (de)
English (en)
Inventor
Johannes Ulrich Goertz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1338767A1 publication Critical patent/EP1338767A1/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Withdrawn legal-status Critical Current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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
    • 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
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials

Definitions

  • the invention relates to a silencer insert made of a shaped element for Insert into an annulus between an exhaust pipe and a muffler with an in an at least temporarily dimensionally stable shell element introduced mixture of glass fiber yarn.
  • Muffler inserts of the generic type are among others in Exhaust system silencers for internal combustion engines Noise reduction used. Such silencers are mostly around pot-like structures through which the openings are provided Exhaust pipe is guided. Sound waves propagate inside the muffler and give their energy to the one in the muffler Damping material.
  • the sound-absorbing material is preferably a so-called porous Soundproofing material, i.e. a material without structured arrangements of cavities and material flow.
  • Such materials are introduced into the silencer pots, under Using known methods, the material is filled into suitable bags will be closed and these pockets in the silencer pots be inserted.
  • the silencer inserts can be too an undesirable redistribution of the filling material of the silencer insert come. For example, this can result in zones with less Damping effects arise.
  • Such muffler inserts have reduced damping behavior.
  • thermal can be very high and thermally low stress zones arise, which for example in Zones of high thermal stress the filling material of an increased aging is subject to and in zones of low thermal stress a risk of there is aggressive rainfall, which is also the forecast Negatively affect the life expectancy of the muffler.
  • the present invention is therefore based on the object To create a silencer with a predetermined material distribution largely preserved.
  • the present invention proposes a silencer insert consisting of a shaped element for introduction into an annular space between an exhaust pipe and a muffler with a mixture of glass fiber yarn introduced into an at least temporarily dimensionally stable envelope element, the shaped element being divided into at least two chamber segments.
  • the filling material of the silencer insert can only be within one chamber.
  • a Material displacement in the entire silencer insert can be avoided.
  • the chamber segments can, for example, be radial segmentation or also form a segmentation in the circumferential direction.
  • the chamber segments be separated are separated from each other.
  • the separating elements can Webs of the shell element are formed, which are within the shell element from the inner opening wall for the exhaust pipe to the radially outer wall extend.
  • axial chamber segments can also be formed by for example disc-shaped separating elements on different axial Positions of the silencer insert are provided.
  • a separating element by a ring element is formed.
  • the ring element can extend, for example, over the axial length of the Extend silencer insert or even only a part of it. So can, for example, the formed chamber segments with different Filling materials are filled, the radial arrangement of the filling materials preserved even during further handling of the silencer insert remains.
  • the separating elements in at least one direction are flowable.
  • An exhaust gas flowing through the muffler can be advantageous flow through as many chamber segments as possible and thus one as possible cause even loading of the silencer insert.
  • the Separation elements are formed by compression.
  • the compression can for example through a layer of denser material or also through a local one Compression of the material can be achieved. So additional components of the Muffler use can be avoided.
  • a damping effect and / or a thermal load it is proposed that the chamber segments with batches different properties are filled. For example, by type and Arrangement of the sealing material can be achieved that a more favorable Damping curve is achieved. For example, a Material distribution can be selected with which the occurrence of acoustic resonances the muffler is steamed.
  • the chamber segments have different height elements.
  • an insert consisting of a with the damping material filled shell element may be used.
  • the envelope elements can contain different damping materials.
  • Standard elements are formed in different ways Muffler inserts can be used. So can be advantageous Expenses for storage can be reduced by the finished Muffler inserts only when necessary by inserting such cover elements to get finished.
  • Chamber segments are fluidically connected to each other. It can advantageously be achieved that a gas flow Temperature compensation within the silencer insert promotes.
  • Fig. 1 is a section through a silencer insert according to the invention a shaped element 10 for insertion into an annular space between one Exhaust pipe shown and a muffler shown.
  • the Shaped element 10 is cylindrical and has a shell element 34.
  • the sleeve element 34 in turn has a lateral surface 46 which is radial Web 14 connected to an inner wall 48 forming a central opening 18 is.
  • a mixture 12 is formed in the chamber segments 16 thus formed Glass fiber yarn introduced.
  • the separating elements 14 are by a Heat-hardening glass fabric is formed.
  • the ends of this Formula elements 10 are each through end walls, not shown here locked.
  • FIG. 2 shows a further embodiment of the present invention.
  • This figure shows a side view of a cylindrical molding 20 with an elliptical base.
  • the shaped element 20 is at the ends closed by an end wall 50.
  • the shaped element 20 has a Shell element 36 and a circular through opening 18.
  • axial between the end walls 50 there are radially extending separating elements 22, 24 arranged by which the chamber segments 26, 52, 54 are formed.
  • the Chamber elements 26, 52 and 54 are made with a different filling material filled.
  • a mixture 30 is thus made in the chamber segments 26 and 52 Glass fiber yarn sections introduced while in the chamber segment 54 Batch 28 is introduced from a glass fiber continuous thread.
  • the separator 22 is formed by a compression, while the separating element 24 by a Glass fabric mat is formed.
  • the separating elements 22, 24 are characterized by this that they can be flowed through in the exhaust gas flow direction.
  • FIG. 3 Another embodiment of a cylindrical silencer insert has a shaped element 32, which with an extending in the axial direction Through opening 18 is provided (Fig 3). Between the through opening 18 and an outer shell wall of the shell member 38 is concentric with Through opening 18 an annular partition member 40 is arranged. A cut by such a silencer insert is shown in Fig. 3.
  • the separating element 40 is the shell element 38 in two chamber segments 58, 60 divided. As in the previous embodiment, here too Chamber segments 58, 60 different insulation materials introduced. So points the chamber segment 58 is a mixture 42 made of a glass fiber continuous thread mixed up with glass fiber sections while in the chamber segment 60 Batch 44 of glass fiber sections is arranged.
  • the separating element 40 in flowable in both directions. So the gas stream can advantageously do that too Reach chamber segment 60. Depending on the application, however, this can also be the case Separating element 40 form a barrier that cannot be flowed through. So can for example, the chamber 60 another beneficial for the damping effect Fluid included.
  • Envelope elements are used that already have a damping material are filled.
  • segmented shell elements in the molded element of Fig. 1 are introduced to the direct filling of the To avoid chamber segments 16.
  • Shell elements can also be used different damping materials can be combined. So can a variety of different silencer inserts from one small number of prefabricated cover elements can be produced.
EP03003092A 2002-02-21 2003-02-13 Insert de silencieux préformé Withdrawn EP1338767A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20202678U DE20202678U1 (de) 2002-02-21 2002-02-21 Schalldämpfereinsatz aus einem Formelement
DE20202678U 2002-02-21

Publications (1)

Publication Number Publication Date
EP1338767A1 true EP1338767A1 (fr) 2003-08-27

Family

ID=7968062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03003092A Withdrawn EP1338767A1 (fr) 2002-02-21 2003-02-13 Insert de silencieux préformé

Country Status (2)

Country Link
EP (1) EP1338767A1 (fr)
DE (1) DE20202678U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038822A1 (de) * 2009-08-25 2011-03-10 Alantum Europe Gmbh Absorptionsschalldämpfer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE141437C (fr) *
US1701397A (en) * 1925-09-16 1929-02-05 Gen Motors Corp Muffler
DE1294393B (de) * 1965-06-08 1969-05-08 Klein Ferdinand Auspufftopf fuer Kraftfahrzeuge
US4125171A (en) * 1973-08-23 1978-11-14 Morris Alberto J Exhaust gas silencer
WO1994004246A1 (fr) * 1992-08-24 1994-03-03 Jossy Macsanz Purificateur a filtre pour systeme de protection de l'environnement
JPH09256834A (ja) * 1996-03-22 1997-09-30 Nissan Motor Co Ltd 吸音ダクト構造体
US6199658B1 (en) * 1998-01-20 2001-03-13 Jb Design, Inc. Multi-Fold side branch muffler

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE141437C (fr) *
US1701397A (en) * 1925-09-16 1929-02-05 Gen Motors Corp Muffler
DE1294393B (de) * 1965-06-08 1969-05-08 Klein Ferdinand Auspufftopf fuer Kraftfahrzeuge
US4125171A (en) * 1973-08-23 1978-11-14 Morris Alberto J Exhaust gas silencer
WO1994004246A1 (fr) * 1992-08-24 1994-03-03 Jossy Macsanz Purificateur a filtre pour systeme de protection de l'environnement
JPH09256834A (ja) * 1996-03-22 1997-09-30 Nissan Motor Co Ltd 吸音ダクト構造体
US6199658B1 (en) * 1998-01-20 2001-03-13 Jb Design, Inc. Multi-Fold side branch muffler

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01 30 January 1998 (1998-01-30) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038822A1 (de) * 2009-08-25 2011-03-10 Alantum Europe Gmbh Absorptionsschalldämpfer

Also Published As

Publication number Publication date
DE20202678U1 (de) 2002-04-25

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