DE602004008774D1 - Schalldämpfer mit verbesserter akustischer leistung bei niedrigen und mittleren frequenzen - Google Patents

Schalldämpfer mit verbesserter akustischer leistung bei niedrigen und mittleren frequenzen

Info

Publication number
DE602004008774D1
DE602004008774D1 DE602004008774T DE602004008774T DE602004008774D1 DE 602004008774 D1 DE602004008774 D1 DE 602004008774D1 DE 602004008774 T DE602004008774 T DE 602004008774T DE 602004008774 T DE602004008774 T DE 602004008774T DE 602004008774 D1 DE602004008774 D1 DE 602004008774D1
Authority
DE
Germany
Prior art keywords
muffler
silencer
low
acoustic power
improved acoustic
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
DE602004008774T
Other languages
English (en)
Other versions
DE602004008774T2 (de
Inventor
Norman T Huff
Selamet Ahmet
Lee Iljae
Larry J Champney
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.)
Owens Corning
Ohio State University Research Foundation
Original Assignee
Owens Corning
Ohio State University Research Foundation
Owens Corning Fiberglas Corp
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 Owens Corning, Ohio State University Research Foundation, Owens Corning Fiberglas Corp filed Critical Owens Corning
Publication of DE602004008774D1 publication Critical patent/DE602004008774D1/de
Application granted granted Critical
Publication of DE602004008774T2 publication Critical patent/DE602004008774T2/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 gas flow passages
    • F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with 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
    • 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
    • F01N1/04—Silencing apparatus characterised by method of silencing by using resonance having sound-absorbing materials in resonance chambers
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
DE602004008774T 2003-05-02 2004-04-30 Schalldämpfer mit verbesserter akustischer leistung bei niedrigen und mittleren frequenzen Expired - Lifetime DE602004008774T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US46746803P 2003-05-02 2003-05-02
US467468P 2003-05-02
PCT/US2004/013224 WO2004099576A1 (en) 2003-05-02 2004-04-30 Mufflers with enhanced acoustic performance at low and moderate frequencies

Publications (2)

Publication Number Publication Date
DE602004008774D1 true DE602004008774D1 (de) 2007-10-18
DE602004008774T2 DE602004008774T2 (de) 2008-06-12

Family

ID=33435077

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004008774T Expired - Lifetime DE602004008774T2 (de) 2003-05-02 2004-04-30 Schalldämpfer mit verbesserter akustischer leistung bei niedrigen und mittleren frequenzen

Country Status (8)

Country Link
US (1) US7281605B2 (de)
EP (1) EP1633958B1 (de)
JP (1) JP4675887B2 (de)
KR (1) KR20060008972A (de)
AT (1) ATE372447T1 (de)
DE (1) DE602004008774T2 (de)
ES (1) ES2293303T3 (de)
WO (1) WO2004099576A1 (de)

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US7942237B2 (en) * 2006-04-12 2011-05-17 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated reflective chamber
US7934580B2 (en) * 2006-04-12 2011-05-03 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system
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JP6659234B2 (ja) * 2014-05-30 2020-03-04 株式会社神戸製鋼所 消音器
US9476533B2 (en) * 2015-01-13 2016-10-25 Embraer S.A. Enhanced fluid attenuators and methods, especially useful for aircraft hydraulic systems
DE202015004064U1 (de) 2015-06-10 2015-09-18 Akustikbüro Krämer + Stegmaier GmbH Vorrichtung zur Reduzierung von Schalldruckpegeln
DE112017007325T5 (de) * 2017-03-27 2019-12-05 Honda Motor Co., Ltd. Abgasauspuff
FR3065917B1 (fr) * 2017-05-05 2020-05-08 Valeo Systemes Thermiques Conduit d'admission d'air poreux pour hvac
US20190120414A1 (en) * 2017-10-23 2019-04-25 Hamilton Sundstrand Corporation Duct assembly having internal noise reduction features, thermal insulation and leak detection
CN110552756A (zh) * 2018-05-30 2019-12-10 上海天纳克排气系统有限公司 消声包
CN112728275A (zh) * 2020-12-19 2021-04-30 重庆大学 非单一低频超开放通风可调节吸声单元

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Also Published As

Publication number Publication date
DE602004008774T2 (de) 2008-06-12
US7281605B2 (en) 2007-10-16
ES2293303T3 (es) 2008-03-16
EP1633958A1 (de) 2006-03-15
JP4675887B2 (ja) 2011-04-27
JP2006525471A (ja) 2006-11-09
US20040262077A1 (en) 2004-12-30
EP1633958B1 (de) 2007-09-05
WO2004099576A1 (en) 2004-11-18
ATE372447T1 (de) 2007-09-15
KR20060008972A (ko) 2006-01-27

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