EP1657414B1 - Silencieux - Google Patents

Silencieux Download PDF

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Publication number
EP1657414B1
EP1657414B1 EP05108715A EP05108715A EP1657414B1 EP 1657414 B1 EP1657414 B1 EP 1657414B1 EP 05108715 A EP05108715 A EP 05108715A EP 05108715 A EP05108715 A EP 05108715A EP 1657414 B1 EP1657414 B1 EP 1657414B1
Authority
EP
European Patent Office
Prior art keywords
tongues
tongue
sliding seat
housing
muffler 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.)
Active
Application number
EP05108715A
Other languages
German (de)
English (en)
Other versions
EP1657414A1 (fr
Inventor
Michael Staut
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 EP1657414A1 publication Critical patent/EP1657414A1/fr
Application granted granted Critical
Publication of EP1657414B1 publication Critical patent/EP1657414B1/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
    • F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
    • 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
    • F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
    • 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
    • F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations

Definitions

  • the present invention relates to a silencer for a gas and airborne sounding conduit, in particular for an exhaust system of an internal combustion engine, preferably in a motor vehicle.
  • a silencer of the type mentioned in the introduction.
  • the muffler is flowed through by the gas transported in the line.
  • the entrained airborne sound enters the muffler with the gas and is attenuated therein, for example by means of reflections, resonances and sound-absorbing materials.
  • the gas then flows out of the muffler at a reduced airborne sound level.
  • Such mufflers are preferably used in exhaust systems of the internal combustion engine, in particular in motor vehicles, in order to dampen the sound generated by the internal combustion engine which propagates through the exhaust system.
  • a muffler for example, to dampen the sound generated by a compressor of an exhaust gas turbocharger.
  • the attenuation of airborne sound may also be of interest in other gas-carrying lines, so that the present invention should in principle not be restricted to applications in internal combustion engines.
  • the two inner floors have only a comparatively small distance from each other, the housing has a particularly high rigidity in this area.
  • the introduction of such an inner bottom at least for series products associated with relatively high costs.
  • this increases the weight of the muffler.
  • the present invention is concerned with the problem of providing a muffler of the type mentioned an improved embodiment, which is characterized in particular by a reduced weight and a low-cost structure.
  • the invention is based on the general idea to attach both inner tubes to one and the same inner bottom and to form at this inner bottom at least one attached to the one inner tube resilient first tongue and at least one attached to the other inner tube, resilient second tongue, which is independent of the at least a first tongue is resiliently movable. Due to this design, the resilient tongues can thermally Conditional changes in length of the inner tubes follow independently, without causing unacceptably high stresses within the inner bottom.
  • a particular advantage of the present invention is that a complete inner bottom can be omitted, which brings a great cost saving and weight reduction.
  • the invention uses the knowledge that in the physicallysteifenden area of the housing sufficient stiffening can be achieved with a single inner bottom, so that a second inner bottom is not required, at least in terms of stiffening of the housing in this housing section. It is also important for the invention that both inner tubes are supported in the region of the sliding seat independently of each other via the one common inner bottom of the housing, resulting in a stable and positionally fixed positioning for both inner tubes in the housing.
  • the tongues may be formed by free cutting or free punching on the inner bottom.
  • the tongues can be made particularly simple and inexpensive.
  • the tongues are integrated into the inner floor or form an integral component with the inner bottom. This integral construction has the advantage that no separately produced tongues need to be attached to the inner bottom with additional work.
  • the inner tubes may be radially spaced apart in the sliding seat region. That is, the inner tubes have in the Sliding seat radial play and do not touch. Such a sliding seat is inevitably leaking, but this is harmless depending on the flow in the silencer. It is advantageous in this non-contact sliding seat that in particular a tension of the two inner tubes can be avoided in the sliding seat due to thermally induced radial expansions, so that the axial mobility of the two inner tubes is ensured in the sliding seat accordingly.
  • a muffler 1 according to the invention comprises a housing 2, in which at least one inner bottom 3 and at least two inner tubes, namely a first inner tube 4 and a second inner tube 5, are arranged.
  • the silencer 1 is here without restriction of the generality as a silencer 1 for an exhaust system of an internal combustion engine, preferably in a motor vehicle, designed. In principle, however, the silencer 1 can be provided for any other gas and airborne sounding line.
  • the inner bottom 3 is used to stiffen the housing 2. It is clear that the housing 2 can in principle also be equipped with more than one inner bottom 3.
  • the inner tubes 4, 5 serve to guide gas in the interior of the housing 2, that is to say in particular for the exhaust gas routing. This means that the muffler 1 at least within its inner tubes 4, 5 of the Airborne transporting gas is flowed through. It is also clear here that the muffler 1 can basically have more than two inner tubes.
  • the muffler 1 can be configured in the usual way as an absorption muffler and accordingly contain absorption materials. Furthermore, the silencer 1 can work with resonance effects and / or with reflections in order to dampen the airborne sound entrained in the gas.
  • the two inner tubes 4, 5 are inserted axially into one another in a sliding seat region 6 characterized by a brace, such that they are axially movable relative to one another.
  • the inner tubes 4, 5 in the sliding seat region 6 radial play 7, that is, the two inner tubes 4, 5 are radially spaced from each other in the sliding seat portion 6.
  • the two inner tubes 4, 5 pass through the inner bottom 3 in the sliding seat region 6. Furthermore, both inner tubes 4, 5 are each fastened to this one common inner bottom 3.
  • the inner bottom 3 according to the Fig. 1 and 2 at least a first tongue 8.
  • two first tongues 8 are provided, which are diametrically opposed.
  • the first tongues 8 are resilient and in each case in the sliding seat region 6 fixedly connected to the first inner tube 4.
  • the first tongues 8 are soldered or welded to the outside of the first inner tube 4.
  • the inner bottom 3 also has at least one second tongue 9.
  • two second tongues 9 are provided, which are diametrically opposite.
  • the first tongues 8 and the second tongues 9 are aligned perpendicular to each other, that is, offset by 90 ° to each other.
  • the second tongues 9 are fixedly connected to the second inner tube 5 and also designed resiliently. It is essential that the second tongues 9 are resiliently movable substantially independently of the first tongues 8. This can be done by a corresponding configuration, in particular with regard to positioning, shaping and dimensioning.
  • the first inner tube 4 can expand axially.
  • This axial movement of the first inner tube 4 is not critical with respect to the second inner tube 5, since the sliding seat region 6 permits an axial adjustment of the two inner tubes 4, 5 relative to one another.
  • the axial adjustment of the first inner tube 4 is likewise not critical, since the first tongues 8 can elastically follow the axial movement of the first inner tube 4 due to their spring elasticity.
  • the spring elasticity of the relatively short first tongues 8 is realized here by the elasticity of the inner bottom 3, on which the first tongues 8 are arranged or formed. The inner bottom 3 is thereby bumped reversible.
  • the length of the second inner tube 5 may also change. Due to the axial mobility relative to the first inner tube 4 in the sliding seat region 6, no tension with the first inner tube 4 can arise. With regard to the inner bottom 3, the changes in length of the second inner tube 5 are also not critical, since the second tongues 9 can follow this axial movements of the second inner tube 5 elastically due to their spring elasticity.
  • the spring elasticity of the second tongues 9 is realized here by a comparatively large length of the second tongues 9. In that regard, it comes with an elastic bending of the second tongues 9 not or only slightly to a bending of the inner bottom 2. In this way disturbing interactions in the elastic yielding of the tongues 8, 9 can be avoided. In that regard, the tongues 8 and 9 are independent of each other resiliently movable.
  • At least the first tongues 8 or at least the second tongues 8, but preferably all the tongues 8, 9 are integrally formed on the inner bottom 3. This is achieved, for example, by free cutting or free punching of the tongues 8, 9 on the inner bottom 3. Alternatively, it would in principle be possible to produce the first tongues 8 and / or the second tongues 9 separately from the inner bottom 3 and then fasten them to the inner bottom 3.
  • the inner bottom 3 extends substantially in a first plane 10.
  • the arrangement of the first tongues 8 is expedient here so that they also extend in the first plane 10.
  • the first tongues 8 are also secured at their free ends 11 substantially in the first plane 10 on the first inner tube 4.
  • the fixing of the first tongues 8 takes place at a free end 12 of the first inner tube 4, that is to say in the sliding seat region 6.
  • the first tongues 8 are thus elastically movable perpendicular to the first plane 10.
  • the second tongues 9 are fastened at their free ends 13 in a second plane 14, which is at a distance from the first plane 10 and runs parallel thereto, on the second inner tube 5.
  • the fixing of the second tongues 9 on the second inner tube 5 also takes place in the region of a free end 15 of the second inner tube 5, ie in the sliding seat region 6.
  • the second tongues 9 each have a substantially rectilinear section 16 which defines the respective free end 13 and extends substantially in the second plane 14.
  • the second tongues 9 are each provided with an angled portion 17, which is angled at one end to the rectilinear portion 16 and the other end is angled from the inner bottom 3. Accordingly, the second tongues 9 are angled at their fixed ends 18 from the inner bottom 3.
  • the second tongues 9 are thus movable elastically perpendicular to the second plane 14.
  • Fig. 1 can be seen, in particular, care is taken during punching or free cutting of the tongues 8, 9 that a resilient yielding of the respective tongues 8, 9 triggers the lowest possible stresses in the inner bottom 3, so that in particular cracking can be avoided.

Landscapes

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

Claims (9)

  1. Silencieux pour un conduit transportant un gaz et un son transmis par l'air, en particulier pour un système d'échappement des gaz d'une machine à combustion, de préférence dans un véhicule,
    - avec un boîtier (2) dans lequel sont disposés au moins deux tuyaux intérieurs (4, 5) pour guider les gaz à l'intérieur du boîtier (2) et qui contient au moins un fond intérieur (3) pour rigidifier le boîtier (2),
    - pour lequel les deux tuyaux intérieurs (4, 5) sont connectés l'un dans l'autre dans une zone d'ajustement appuyé (6) et sont axialement mobiles l'un par rapport à l'autre,
    - pour lequel les deux tuyaux intérieurs (4, 5) traversent le fond intérieur (3) dans la zone d'ajustement appuyé (6),
    - pour lequel le fond intérieur (3) présente au moins une première languette flexible (8) qui est fermement raccordée avec le tuyau intérieur (4),
    caractérisé en ce que
    - le fond intérieur (3) présente en outre au moins une deuxième languette flexible (9) qui est fermement raccordée avec le tuyau intérieur (5) et qui est mobile de façon flexible indépendamment au moins de la première languette (8).
  2. Silencieux selon la revendication 1,
    caractérisé en ce que
    les languettes (8, 9) sont formées par découpe libre ou emboutissage libre sur le fond intérieur (3).
  3. Silencieux selon la revendication 1 ou 2,
    caractérisé en ce qu'
    au moins une deuxième languette (9) est pliée à son extrémité fixe (18) depuis le fond intérieur (3).
  4. Silencieux selon une des revendications 1 à 3,
    caractérisé en ce qu'
    au moins une deuxième languette (9) est fixée à un autre tuyau intérieur (5) sur son extrémité libre (13) dans un deuxième plan (14) distant d'un premier plan (10) dans lequel le fond intérieur (3) s'étend.
  5. Silencieux selon la revendication 4,
    caractérisé en ce qu'
    au moins une deuxième languette (9) présente une section (16) rectiligne comprenant l'extrémité libre (13), qui s'étend pour l'essentiel dans le deuxième plan (14).
  6. Silencieux selon une des revendications 1 à 5,
    caractérisé en ce qu'
    au mois une première languette (8) est fixée à son extrémité libre (11) à un tuyau intérieur (4) dans un premier plan (10) dans lequel s'étend le fond intérieur (3).
  7. Silencieux selon une des revendications 1 à 6,
    caractérisé en ce qu'
    au moins la première languette (8) s'étend pour l'essentiel dans un premier plan (10) dans lequel s'étend également le fond intérieur (3).
  8. Silencieux selon une des revendications 1 à 7,
    caractérisé en ce que
    - deux premières languettes (8) diamétralement opposées sont prévues, ou
    - deux deuxièmes languettes (9) diamétralement opposées sont prévues, ou
    - deux premières languettes (8) diamétralement opposées et entre celles-ci deux deuxièmes languettes (9) diamétralement opposées sont prévues.
  9. Silencieux selon une des revendications 1 à 8,
    caractérisé en ce que
    les tuyaux intérieurs (4, 5) sont espacés l'un de l'autre dans le sens radial dans la zone d'ajustement appuyé (6).
EP05108715A 2004-11-10 2005-09-21 Silencieux Active EP1657414B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004054441A DE102004054441B4 (de) 2004-11-10 2004-11-10 Schalldämpfer

Publications (2)

Publication Number Publication Date
EP1657414A1 EP1657414A1 (fr) 2006-05-17
EP1657414B1 true EP1657414B1 (fr) 2008-08-13

Family

ID=35695722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05108715A Active EP1657414B1 (fr) 2004-11-10 2005-09-21 Silencieux

Country Status (4)

Country Link
US (1) US7434658B2 (fr)
EP (1) EP1657414B1 (fr)
AT (1) ATE404783T1 (fr)
DE (2) DE102004054441B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8495866B2 (en) 2007-04-25 2013-07-30 J. Eberspaecher Gmbh & Co., Kg Mixing and/or evaporation device and respective manufacturing method

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DE102004054441B4 (de) * 2004-11-10 2006-08-03 J. Eberspächer GmbH & Co. KG Schalldämpfer
DE102005036676A1 (de) * 2005-08-04 2007-02-15 Faurecia Abgastechnik Gmbh Schalldämpfer für die Abgasanlage eines Kraftfahrzeugs
DE102006016096B3 (de) * 2006-04-04 2007-12-13 J. Eberspächer GmbH & Co. KG Bauteilanordnung und zugehöriges Herstellungsverfahren
DE102006016095A1 (de) * 2006-04-04 2007-10-11 J. Eberspächer GmbH & Co. KG Schalldämpfer
DE102006017812C5 (de) 2006-04-13 2024-08-01 Faurecia Emissions Control Technologies, Germany Gmbh Schalldämpfer für eine Abgasanlage
DE102007003116A1 (de) * 2007-01-16 2008-07-17 Mahle International Gmbh Brennkraftmaschinensystem
DE102007028449A1 (de) 2007-04-25 2008-10-30 J. Eberspächer GmbH & Co. KG Misch- und/oder Verdampfungseinrichtung und zugehöriges Herstellungsverfahren
JP5405877B2 (ja) * 2009-03-31 2014-02-05 本田技研工業株式会社 自動２輪車の消音装置
EP2518286B1 (fr) * 2011-04-28 2015-07-15 Eberspächer Exhaust Technology GmbH & Co. KG Silencieux pour véhicules automobiles
US9046316B1 (en) * 2014-02-04 2015-06-02 Gemini Technologies Firearm suppressor with dynamic baffles
US9534522B2 (en) * 2015-03-23 2017-01-03 Bosal Emission Control Systems Nv Muffler for an exhaust system of an internal combustion engine
DE102016101693A1 (de) * 2016-02-01 2017-08-03 Eberspächer Exhaust Technology GmbH & Co. KG Schalldämpfer für eine Abgasanlage
DE102018115742A1 (de) * 2018-06-29 2020-01-02 Eberspächer Exhaust Technology GmbH & Co. KG Schalldämpfer
JP7556796B2 (ja) 2021-01-14 2024-09-26 フタバ産業株式会社 排気ユニット
DE102021116802A1 (de) * 2021-06-30 2023-01-05 Purem GmbH Schalldämpfer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8495866B2 (en) 2007-04-25 2013-07-30 J. Eberspaecher Gmbh & Co., Kg Mixing and/or evaporation device and respective manufacturing method

Also Published As

Publication number Publication date
DE102004054441A1 (de) 2006-05-18
EP1657414A1 (fr) 2006-05-17
DE102004054441B4 (de) 2006-08-03
US20060096805A1 (en) 2006-05-11
DE502005005008D1 (de) 2008-09-25
ATE404783T1 (de) 2008-08-15
US7434658B2 (en) 2008-10-14

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