EP0714087B1 - Resonator-Schalldämpfer - Google Patents

Resonator-Schalldämpfer Download PDF

Info

Publication number
EP0714087B1
EP0714087B1 EP95117301A EP95117301A EP0714087B1 EP 0714087 B1 EP0714087 B1 EP 0714087B1 EP 95117301 A EP95117301 A EP 95117301A EP 95117301 A EP95117301 A EP 95117301A EP 0714087 B1 EP0714087 B1 EP 0714087B1
Authority
EP
European Patent Office
Prior art keywords
end tube
absorber according
tube section
resonator sound
resonator
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
EP95117301A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0714087A3 (enrdf_load_stackoverflow
EP0714087A2 (de
Inventor
Friedrich Schlenker
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 EP0714087A2 publication Critical patent/EP0714087A2/de
Publication of EP0714087A3 publication Critical patent/EP0714087A3/xx
Application granted granted Critical
Publication of EP0714087B1 publication Critical patent/EP0714087B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with exhaust gas flow passages
    • F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with exhaust gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/023—Helmholtz resonators
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

Definitions

  • the invention relates to a resonator muffler with upstream and downstream connecting pipes.
  • the most varied silencers are used in the damping characteristics to be achieved, which are arranged as separate components in the pipe string of the exhaust system.
  • the object of the invention is to provide a resonator muffler of the type mentioned, which is very simple in structure with a given damping characteristic.
  • the muffler is advantageously further developed by the features of subclaims 2 to 11.
  • the resonator muffler is not designed as a discrete component, but is formed by coaxial or staggered straight end pipe sections of the connecting pipes themselves, the inner end pipe section of the upstream connecting pipe having a circumferential perforation and between the inner end pipe section and the outer end pipe section of the downstream connecting pipe being formed by pipe pre-deformation Annulus is provided.
  • the pipe deformation is expediently carried out either by calibrating at least one of the two connecting pipes at the appropriate point or by hydrostatic deformation using an internal high-pressure process.
  • the inner connecting pipe has a constant diameter, while only the end pipe section of the outer connecting pipe is expanded for the later formation of the annular space.
  • the pipe preforming is carried out in such a way that in the assembled state of the arrangement between the inner end pipe section and the outer end pipe section at least one sliding seat is provided at the end of a connecting pipe.
  • a single sliding seat is formed at the upstream end of the outer tailpipe section, while at the other end of the resonator muffler integrated in the connecting pipes, a single connection weld seam is provided on the pipe circumference, i.e. at the downstream end of the inner tail pipe section.
  • the circumferential perforation of the inner tail pipe section expediently has approximately 450 through bores with a diameter of approximately 3.5 mm, and the annular space extends in the axial length over approximately 130 mm, a radial gap of approximately 8 mm being provided, and the The outer diameter of the inner tail pipe section is approx. 49 mm.
  • the resonator muffler can be designed on the one hand as a reflection muffler in which the inner annulus is an empty space, or alternatively as an absorption muffler in which the annulus is at least partially filled with a swallowing material such as basalt or steel wool.
  • the muffler itself is thus formed by the connection pipes which are present anyway, two components and a fastening point being provided in total, which results in increased fatigue strength during operation. Due to the integrated sliding seat, different lengths of the pipes are possible.
  • the resonator silencer is one size simply constructed, that there are significant advantages over conventional production of a silencer. Individual adaptation of a silencer to the overall system is possible in a simple manner.
  • connecting pipes of an exhaust system are shown in the area of their connection point, in which a resonator silencer 1 is formed.
  • the resonator muffler 1 is formed in particular by the straight, coaxially arranged end pipe sections of the connecting pipes, the inner end pipe section 2 of the upstream connecting pipe having a circumferential perforation 4 and an annular space 5 being present between the inner end pipe section 2 and the outer end pipe section 3 of the downstream connecting pipe .
  • the annular space 5 is created by appropriate pipe deformation of the connecting pipes before assembly, either by calibration or by a hydrostatic deformation process.
  • the downstream end of the resonator muffler 1 has a circular seam or circumferential connection weld 7 between the inner end pipe section 2 and the outer end pipe section 3, while the other, upstream end of the resonator muffler 1 has a sliding seat 6, so that length expansion between the parts is possible during operation .
  • the circumferential perforations 4 are approximately 450 through holes in the exemplary embodiment of the drawing.
  • basalt or steel wool can be used to form a Absorption silencer may be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Exhaust Silencers (AREA)
  • Surgical Instruments (AREA)
  • Soil Working Implements (AREA)
EP95117301A 1994-11-26 1995-11-03 Resonator-Schalldämpfer Expired - Lifetime EP0714087B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9419022U 1994-11-26
DE9419022U DE9419022U1 (de) 1994-11-26 1994-11-26 Resonator-Schalldämpfer

Publications (3)

Publication Number Publication Date
EP0714087A2 EP0714087A2 (de) 1996-05-29
EP0714087A3 EP0714087A3 (enrdf_load_stackoverflow) 1996-06-26
EP0714087B1 true EP0714087B1 (de) 2001-09-19

Family

ID=6916677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95117301A Expired - Lifetime EP0714087B1 (de) 1994-11-26 1995-11-03 Resonator-Schalldämpfer

Country Status (2)

Country Link
EP (1) EP0714087B1 (enrdf_load_stackoverflow)
DE (2) DE9419022U1 (enrdf_load_stackoverflow)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19751940C1 (de) * 1997-11-24 1999-03-25 Mann & Hummel Filter Schalldämpfer mit einem Nebenschlußresonator
JP3439660B2 (ja) * 1998-07-09 2003-08-25 豊田紡織株式会社 レゾネータ
US6467571B2 (en) 2000-12-11 2002-10-22 Nakagawa Sangyo Co., Ltd. Sound absorbing material, muffler using the sound absorbing material, and method for forming sound absorbing layer thereof
EP1217184B1 (en) * 2000-12-14 2003-06-04 Nakagawa Sangyo Co., Ltd. Sound absorbing material, muffler using the sound absorbing material, and method for forming sound absorbing layer thereof
DE10148413C2 (de) * 2001-09-29 2003-07-31 Eberspaecher J Gmbh & Co Strömungsführendes Rohr eines Schalldämpfers
EP1375848B1 (de) * 2002-06-18 2004-12-29 Benteler Automobiltechnik GmbH Vorrichtung zur Reduzierung von Schallemissionen und Verfahren zur Herstellung einer solchen Vorrichtung
DE10339539A1 (de) * 2003-08-26 2005-03-31 Abb Turbo Systems Ag Schalldämpfer
SI22014A (sl) * 2005-04-22 2006-10-31 Igor Akrapovic Izpusna cev z dusilno komoro
DE102006025230A1 (de) * 2006-05-29 2007-12-06 Mann + Hummel Gmbh Luftfiltergehäuse für ein Kompaktluftfilterelement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052173B (de) * 1953-03-24 1959-03-05 Vladimir Jansa Auspuffsystem fuer Motorradmotoren
FR1288891A (fr) * 1961-02-16 1962-03-30 Tecalemit Dispositif silencieux et déformateur des ondes acoustiques
US4580656A (en) * 1984-04-06 1986-04-08 Sankei Giken Kogyo Kabushiki Kaisha Absorbent retainer for absorbent type muffler
JPS6183020A (ja) * 1984-09-28 1986-04-26 Tsuchiya Mfg Co Ltd 合成樹脂製の共鳴型消音器の製造方法
DE8702911U1 (de) * 1987-02-25 1988-06-23 Zeuna-Stärker GmbH & Co KG, 8900 Augsburg Abgasschalldämpfer für Brennkraftmaschinen
US4779703A (en) * 1987-04-06 1988-10-25 Honda Giken Kogyo Kabushiki Kaisha Silencing device for internal combustion engine

Also Published As

Publication number Publication date
EP0714087A3 (enrdf_load_stackoverflow) 1996-06-26
DE9419022U1 (de) 1995-01-26
EP0714087A2 (de) 1996-05-29
DE59509613D1 (de) 2001-10-25

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