EP1338769A1 - Pièce d'insertion pour silencieux sous form d'élément moule - Google Patents

Pièce d'insertion pour silencieux sous form d'élément moule Download PDF

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Publication number
EP1338769A1
EP1338769A1 EP03003095A EP03003095A EP1338769A1 EP 1338769 A1 EP1338769 A1 EP 1338769A1 EP 03003095 A EP03003095 A EP 03003095A EP 03003095 A EP03003095 A EP 03003095A EP 1338769 A1 EP1338769 A1 EP 1338769A1
Authority
EP
European Patent Office
Prior art keywords
elements
temperature distribution
influencing
silencer
insert according
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Withdrawn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
EP03003095A
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 EP1338769A1 publication Critical patent/EP1338769A1/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Withdrawn legal-status Critical Current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
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/02—Mineral wool, e.g. glass wool, rock wool, asbestos 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
    • F01N2310/00—Selection of sound absorbing or insulating material
    • F01N2310/04—Metallic wool, e.g. steel wool, copper wool or the like

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. With such absorption silencers, it can due to the design, different thermal loads on the insulation material come. Therefore, as a filling material for the shell element is a corresponding use high temperature resistant material. In addition, it can large thermal load on the insulating material to an undesirable come premature aging, which is an early replacement of the muffler may require by the damping behavior of the muffler disadvantageous being affected.
  • the invention is therefore based on the object of creating a generic muffler insert which has as uniform a thermal load as possible.
  • the invention proposes a silencer insert made 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 provided with elements influencing the temperature distribution.
  • the elements influencing the temperature distribution advantageously promote one Temperature compensation within the silencer insert. So it can Stress on particularly stressed zones can be reduced. At the same time, the Low stress zones can be increased, for example reduce aggressive precipitation from exhaust gases. For example through suitable influencing the gas flow in the silencer insert Elements can be achieved.
  • those which influence the temperature distribution Elements are thermally conductive elements. So the thermal energy can be advantageous a thermally highly stressed zone to a thermally low stressed zone, so as to equalize the temperature create.
  • the Elements that influence temperature distribution are shielding elements. It can for example, a zone of high thermal stress before excessive Inflow of hot gas to be protected.
  • the wire is introduced into the shaped element.
  • the wire can be due its thermal conductivity is the temperature compensation between high zones create thermal stress and zones of low thermal stress.
  • the Wire can be made of steel, copper or an alloy, for example.
  • the braid can be used as a textile Fabric be formed, such as. B. fabrics, scrims, braids.
  • the casing element with such a metal lamination can be advantageous be provided, the metal lamination facing the muffler Outside of the case is attached.
  • the metal cladding can be strip-shaped or be formed over the entire surface.
  • the Temperature distribution influencing elements in the fiber equipment are introduced.
  • a fabric forming the envelope element be provided with appropriate fiber equipment.
  • the temperature distribution influencing elements are introduced into the batch. So can be beneficial the mixture to be introduced into the shell element before the introduction with the elements influencing the temperature distribution are mixed and with the known methods are introduced into the shell element. Such a Manufacturing process can be advantageous taking advantage of existing ones Manufacturing facilities are running.
  • Fig. 1 an inventive silencer insert 10 is shown, the one has cylindrical sleeve member 12.
  • the envelope element 12 has a substantially concentric through opening 20.
  • the silencer insert 10 consists of a shaped element for insertion into an annular space between an exhaust pipe and a muffler. There is a mixture in the molded element 28 introduced from glass fiber yarn (Fig. 2). Furthermore, the shaped element has the Elements 14, 18, 30 influencing temperature.
  • Figure 2 consists of the shell element 12 from a fabric shell 16, on the Muffler facing outside a metal lamination 14 is applied.
  • Metal webs 18 also extend from the inner through opening 20 radially outwards. Between the metal webs 18 are in radial and axial Direction extending flat heat compensation elements 26 arranged.
  • the Spaces 32 are filled with a mixture 28 made of glass fiber yarn, which additionally contains wire sections 30 made of steel.
  • FIG. 3 shows an enlarged cross section of a heat compensation element 26, which consists of a textile fabric, which has a Metal lamination 24 is provided.
  • the Metal cladding 24 formed by an aluminum cladding.
  • the muffler insert shown here, formed from the molded element 10 exhibits the desired good properties in terms of uniformity thermal stress. So at one axial end through the Gas introduced heat over the temperature distribution influencing Elements 14, 18, 24, 30 are distributed. The silencer insert can heat evenly, which also causes precipitation in the cool area of the Gas inlet axially opposite end can be reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP03003095A 2002-02-21 2003-02-13 Pièce d'insertion pour silencieux sous form d'élément moule Withdrawn EP1338769A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002107260 DE10207260A1 (de) 2002-02-21 2002-02-21 Schalldämpfereinsatz aus einem Formelement
DE10207260 2002-02-21

Publications (1)

Publication Number Publication Date
EP1338769A1 true EP1338769A1 (fr) 2003-08-27

Family

ID=27635215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03003095A Withdrawn EP1338769A1 (fr) 2002-02-21 2003-02-13 Pièce d'insertion pour silencieux sous form d'élément moule

Country Status (2)

Country Link
EP (1) EP1338769A1 (fr)
DE (1) DE10207260A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8336673B2 (en) 2010-07-07 2012-12-25 Bay Industries Inc. Muffler, muffler insert, and methods and apparatus for making
US9938872B2 (en) 2015-06-09 2018-04-10 Bay Fabrication, Inc. Muffler insert, and systems, methods and apparatus for making
US10119779B1 (en) 2017-06-27 2018-11-06 Smith & Wesson Corp. Suppressor for firearm and baffle cup therefor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2267731A (en) * 1992-06-10 1993-12-15 Lancaster Glass Fibre Sound absorber insert for an exhaust silencer.
US6196351B1 (en) * 1999-06-04 2001-03-06 Lancaster Glass Fibre Limited Silencer cartridge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2267731A (en) * 1992-06-10 1993-12-15 Lancaster Glass Fibre Sound absorber insert for an exhaust silencer.
US6196351B1 (en) * 1999-06-04 2001-03-06 Lancaster Glass Fibre Limited Silencer cartridge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8336673B2 (en) 2010-07-07 2012-12-25 Bay Industries Inc. Muffler, muffler insert, and methods and apparatus for making
US9938872B2 (en) 2015-06-09 2018-04-10 Bay Fabrication, Inc. Muffler insert, and systems, methods and apparatus for making
US10119779B1 (en) 2017-06-27 2018-11-06 Smith & Wesson Corp. Suppressor for firearm and baffle cup therefor
US10724817B2 (en) 2017-06-27 2020-07-28 Smith & Wesson Inc. Suppressor for firearm and baffle cup therefor
US11125524B2 (en) 2017-06-27 2021-09-21 Smith & Wesson Inc. Suppressor for firearm and method of making baffle cup therefor

Also Published As

Publication number Publication date
DE10207260A1 (de) 2003-09-04

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