BR0207389A - Aparelho para o amortecimento de ressonância em um conduto - Google Patents

Aparelho para o amortecimento de ressonância em um conduto

Info

Publication number
BR0207389A
BR0207389A BR0207389-7A BR0207389A BR0207389A BR 0207389 A BR0207389 A BR 0207389A BR 0207389 A BR0207389 A BR 0207389A BR 0207389 A BR0207389 A BR 0207389A
Authority
BR
Brazil
Prior art keywords
conduit
perforation
resonance
damping device
resonance damping
Prior art date
Application number
BR0207389-7A
Other languages
English (en)
Inventor
Gert-Ove Wahlstroem
Bjoern Henriksson
Original Assignee
Volvo Lastvagnar Ab
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 Volvo Lastvagnar Ab filed Critical Volvo Lastvagnar Ab
Publication of BR0207389A publication Critical patent/BR0207389A/pt

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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • F01N2470/00—Structure or shape of exhaust gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • F01N2470/04—Tubes being perforated characterised by shape, disposition or dimensions of apertures

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Pipe Accessories (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

"APARELHO PARA O AMORTECIMENTO DE RESSONâNCIA EM UM CONDUTO". A presente invenção se refere a um aparelho para o amortecimento de ressonância em um conduto (10) para transporte de gases de exaustão a partir de um motor de combustão interna. A ressonância é amortecida em virtude do conduto (10) estar proporcionado com pelo menos uma perfuração (14) localizada em uma distância a partir da extremidade externa (11) do conduto e em um ponto no conduto (10) com uma pressão estática comparativamente inferior àquela pressão uma pequena extensão a jusante da perfuração (14). A perfuração (14) forma uma conexão acústica entre o interior do conduto (10) e a atmosfera circundante.
BR0207389-7A 2001-02-21 2002-02-14 Aparelho para o amortecimento de ressonância em um conduto BR0207389A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0100585A SE522546C2 (sv) 2001-02-21 2001-02-21 Anordning för dämpning av resonans i en rörledning
PCT/SE2002/000260 WO2002066798A1 (en) 2001-02-21 2002-02-14 Apparatus for damping resonance in a conduit

Publications (1)

Publication Number Publication Date
BR0207389A true BR0207389A (pt) 2004-02-10

Family

ID=20283074

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0207389-7A BR0207389A (pt) 2001-02-21 2002-02-14 Aparelho para o amortecimento de ressonância em um conduto

Country Status (6)

Country Link
US (1) US20040104071A1 (pt)
EP (1) EP1373689A1 (pt)
JP (1) JP4159032B2 (pt)
BR (1) BR0207389A (pt)
SE (1) SE522546C2 (pt)
WO (1) WO2002066798A1 (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1524415A1 (de) * 2003-10-15 2005-04-20 Zeuna-Stärker Gmbh & Co Kg Abgasschalldämpfer
DE102005006914B4 (de) * 2005-02-16 2008-05-29 Woco Industrietechnik Gmbh Vorrichtung zur Schallkopplung zwischen einem Ansaugtrakt und/oder Motorraum und einem Fahrzeuginnenraum eines Kraftfahrzeuges
JP2008151413A (ja) * 2006-12-18 2008-07-03 Kumagai Gumi Co Ltd ダクト部品
ITTO20070529A1 (it) * 2007-07-17 2009-01-18 Metallurg Cornaglia Sp A Off Dispositivo silenziatore per un condotto atto ad essere percorso da un fluido e suo metodo di realizzazione.
DE112008002339B4 (de) * 2007-08-31 2014-05-22 Tenneco Automotive Operating Company Inc. Fahrzeug-Abgasresonator mit Kühleigenschaft
WO2014141778A1 (ja) * 2013-03-11 2014-09-18 フタバ産業株式会社 排気管
DE102015218394A1 (de) 2015-09-24 2017-03-30 Volkswagen Aktiengesellschaft Vorrichtung zur Verhinderung von Pfeifgeräuschen in gasdurchströmten Systemen mit perforierten Abschnitten
US11225897B2 (en) * 2019-07-23 2022-01-18 Tenneco Automotive Operating Company Inc. Vehicle exhaust system
US11603781B2 (en) * 2020-02-03 2023-03-14 Faurecia Emissions Control Technologies, Usa, Llc Exhaust system component
US11808186B2 (en) 2021-05-12 2023-11-07 Tenneco Automotive Operating Company Inc. Surface component for vehicle exhaust system
US12535027B2 (en) 2022-12-28 2026-01-27 Tenneco Automotive Operating Company Llc Vehicle exhaust system having an integral hood

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1611475A (en) * 1922-03-23 1926-12-21 Maxim Silencer Co Silencer
US2013956A (en) * 1931-11-16 1935-09-10 Laurence R Heath Muffler
US2248456A (en) * 1938-08-19 1941-07-08 Harris Eliot Huntington Muffling and cooling device for internal combustion engines
US2241150A (en) * 1940-01-27 1941-05-06 Reese F Morgan Exhaust muffler
FR988370A (fr) * 1949-04-08 1951-08-27 Pot d'échappement
US3471265A (en) * 1965-01-27 1969-10-07 Grace W R & Co Catalytic muffler device
US3611724A (en) * 1970-01-07 1971-10-12 Gen Electric Choked inlet noise suppression device for a turbofan engine
US3592292A (en) * 1970-06-24 1971-07-13 James H Lavallee Tailpipe extension silencer with venturi air extrainment
US3899923A (en) * 1971-05-13 1975-08-19 Teller Environmental Systems Test process and apparatus for treatment of jet engine exhaust
US3865212A (en) * 1973-12-14 1975-02-11 Hugh C Mcdonald Surveillance aircraft muffler
US4024698A (en) * 1976-07-16 1977-05-24 Allied Chemical Corporation Aspirator muffler
JPS56143310A (en) * 1980-03-17 1981-11-09 Hiruzu Ind Ltd Muffler and silencing method
US4298153A (en) * 1980-05-07 1981-11-03 Allied Corporation Interfloor tube aspirator inlet muffler
US4690245A (en) * 1983-03-17 1987-09-01 Stemco, Inc. Flattened venturi, method and apparatus for making
AT385384B (de) * 1986-07-28 1988-03-25 Stastny & Schroegendorfer Ges Lautsprecherabdeckung
JPH01147110A (ja) * 1987-12-03 1989-06-08 Yoshiaki Tsunoda 吸引式空冷機構に於る負圧空気流の加速装置
US5197509A (en) * 1990-06-06 1993-03-30 Cheng Dah Y Laminar flow elbow system and method
US5550334A (en) * 1991-10-30 1996-08-27 Noise Cancellation Technologies, Inc. Actively sound reduced muffler having a venturi effect configuration
JP3816581B2 (ja) * 1996-06-21 2006-08-30 株式会社共立 内燃エンジンのマフラー
DE19629368A1 (de) * 1996-07-20 1998-01-22 Gillet Heinrich Gmbh Vorrichtung zum Unterdrücken des Entstehens von harmonischen Tönen in perforierten Rohren
US5881554A (en) * 1998-03-23 1999-03-16 Ford Global Technologies, Inc. Integrated manifold, muffler, and catalyst device
US7048229B2 (en) * 2000-09-26 2006-05-23 Techland Research, Inc. Low sonic boom inlet for supersonic aircraft

Also Published As

Publication number Publication date
SE522546C2 (sv) 2004-02-17
JP2004519575A (ja) 2004-07-02
EP1373689A1 (en) 2004-01-02
SE0100585D0 (sv) 2001-02-21
WO2002066798A1 (en) 2002-08-29
SE0100585L (sv) 2002-08-22
US20040104071A1 (en) 2004-06-03
JP4159032B2 (ja) 2008-10-01

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A E 9A ANUIDADE(S).

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O(S) ARTIGO(S) 8O E 13 DA LPI

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.

B15K Others concerning applications: alteration of classification

Ipc: F01N 13/08 (2010.01), F01N 1/02 (2006.01)