EP0047678B1 - Abgas-Schalldämpfer mit innenliegender Resonanzkammer für Brennkraftmaschinen - Google Patents

Abgas-Schalldämpfer mit innenliegender Resonanzkammer für Brennkraftmaschinen Download PDF

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Publication number
EP0047678B1
EP0047678B1 EP81401055A EP81401055A EP0047678B1 EP 0047678 B1 EP0047678 B1 EP 0047678B1 EP 81401055 A EP81401055 A EP 81401055A EP 81401055 A EP81401055 A EP 81401055A EP 0047678 B1 EP0047678 B1 EP 0047678B1
Authority
EP
European Patent Office
Prior art keywords
resonator
stage
silencer
case
chamber
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
Application number
EP81401055A
Other languages
English (en)
French (fr)
Other versions
EP0047678A1 (de
Inventor
Jean Rauch
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0047678A1 publication Critical patent/EP0047678A1/de
Application granted granted Critical
Publication of EP0047678B1 publication Critical patent/EP0047678B1/de
Expired 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
    • F01N1/02—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
    • 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
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • 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
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/15—Plurality of resonance or dead chambers
    • F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction

Definitions

  • the field concerned by this invention is that of exhaust silencers intended to equip internal combustion engines.
  • FIG. 1 attached shows a known silencer comprising an envelope E separated by a transverse partition C into two parts: a first, located on the left in the drawing, in which are arranged the means fulfilling the functions of reflection and interference, and a second located on the right, which is the Helmholz resonator.
  • This arrangement known for example from FR-A-2 131 431 has the drawback of shortening, for a given total length of silencer, the length of the stage with reflection and interference by the length of the resonator stage.
  • the attenuation of the components of medium frequencies whose energy lies midway between those of the bass and treble, obtained in the reflection and interference stage is all the more effective as the length of this floor is more important.
  • FR-A-1263608 a silencer in which is incorporated a Helmholtz type resonator.
  • this silencer comprises, apart from this resonator, only a succession of resonators whose speakers are arranged in series.
  • This arrangement is cumbersome in length and does not make it possible to accommodate a reflection and / or interference stage long enough to attenuate the medium frequencies.
  • this device results in a significant load loss due to the numerous baffles that constitute the relatively close partitions and the non-perforated tubes.
  • the object of this invention is therefore to provide a silencer of the type comprising a reflection and interference stage and at least one Helmholtz resonator, which, with equal total dimensions, offers improved attenuation characteristics.
  • an exhaust silencer for an internal combustion engine comprising an envelope formed by a side wall and two end walls and in which are arranged at least a first reflection attenuation stage and / or interference and at least a second stage constituting a Helmholtz resonator, formed by an enclosure and a neck constituting a pressure tap communicating with the first stage, characterized in that the pressure tap of the second stage is carried out from of an end wall of the envelope by means of a neck located at least partially outside the envelope, and the enclosure of the resonator is crossed by tubes forming part of the first stage.
  • the latter relates to a silencer comprising a casing 1 closed at its two ends by two walls 2 and 3. Furthermore, this casing is separated by three partitions 4, 5 and 6 into four chambers respectively bearing the references 7, 8, 9 and 10. It is completed by three tubes or pipes, an inlet tube 11, an intermediate tube 12 and an outlet tube 13 which are provided, in a conventional manner, with orifices or openings as designated for example by the references 14, 15 and 16.
  • the orifices 14 constitute, with an outer tube section 17, a high frequency resonator, the assembly of the three tubes 11, 12, 13, with their orifices and the volumes which surround them also constitute a stage d attenuation with reflection and interference.

Landscapes

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

Claims (4)

1. Auspuff-Vorschalldämpfer für einen Motor mit innerer Verbrennung, mit einem Gehäuse, das von einer Seitenwand (1:31) und zwei Endwänden (2, 3; 32, 33) gebildet ist und in dem zumindest eine erste Abschwächungsstufe für Reflexion und/oder Interferenz und mindestens eine einen Helmholtz-Resonator bildende zweite Stufe angeordnet sind, der von einer Kammer und einem Hals gebildet ist und einen Druckabgriff bildet, der mit der ersten Stufe in Verbindung steht, dadurch gekennzeichnet, daß sich der Druckabgriff der zweiten Stufe von der einen Endwand (3; 33) des Gehäuses mittels eins Halses (19; 48) vollzieht, der zumindest teilweise ausserhalb des Gehäuses liegt, und daß die Kammer (9; 42) des Resonators von Rohren (11, 12, 13; 45, 46, 47) durchdrungen ist, die Teil der ersten Stufe sind.
2. Schalldämpfer nach Anspruch 1, dadurch gekennzeichnet, daß der Druckabgriff des Resonators in der Außenwand (3; 33) des Gehäuses dem Gaseintritt gegenüberliegend und mit einem Eintrittsrohr (11; 45) fluchtend angeordnet ist.
3. Schalldämpfer nach Anspruch 1, dadurch gekennzeichnet, daß die Kammer (9; 42) des Resonators zwischen zwei Kammern (8, 10; 41, 430 angeordnet und Teil der ersten Stufe ist.
4. Schalldämpfer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der den Druckabgriff des Helmholtz-Resonators bildende Hals (19; 48) einen gekrümmten Teil enthält, der außerhalb des Gehäuses liegt,. und einen geradlinigen Teil (19b) aufweist, der sich bis in die Kammer (9; 42) des Resonators erstreckt.
EP81401055A 1980-09-08 1981-07-01 Abgas-Schalldämpfer mit innenliegender Resonanzkammer für Brennkraftmaschinen Expired EP0047678B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8019339A FR2489881A1 (fr) 1980-09-08 1980-09-08 Silencieux d'echappement a resonateur incorpore, pour moteur a combustion
FR8019339 1980-09-08

Publications (2)

Publication Number Publication Date
EP0047678A1 EP0047678A1 (de) 1982-03-17
EP0047678B1 true EP0047678B1 (de) 1984-09-12

Family

ID=9245729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81401055A Expired EP0047678B1 (de) 1980-09-08 1981-07-01 Abgas-Schalldämpfer mit innenliegender Resonanzkammer für Brennkraftmaschinen

Country Status (4)

Country Link
US (1) US4381832A (de)
EP (1) EP0047678B1 (de)
DE (1) DE3166018D1 (de)
FR (1) FR2489881A1 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3641942A1 (de) * 1986-12-09 1988-06-23 Leistritz Ag Absorptions-abgasschalldaempfer
US5162621A (en) * 1990-10-16 1992-11-10 Siemens Automotive Limited Internal sidebranch resonator
GB2253076B (en) * 1991-02-21 1994-08-03 Lotus Car Method and apparatus for attenuating acoustic vibrations in a medium
US5625172A (en) * 1995-04-18 1997-04-29 Caterpillar Inc. Engine enclosure air inlet/discharge sound attenuator
GB9522724D0 (en) * 1995-11-06 1996-01-10 Acts Ltd A noise attenuator for an induction system or an exhaust system
US7870930B2 (en) * 2005-09-02 2011-01-18 Emcon Technologies Llc Exhaust system with external helmholtz resonator and associated method
US20070125594A1 (en) * 2005-12-01 2007-06-07 Hill William E Muffler assembly with sound absorbing member
US20090000863A1 (en) * 2007-06-28 2009-01-01 Share Win Industry Co., Ltd. Exhaust pipe
KR101251728B1 (ko) * 2010-09-07 2013-04-05 현대자동차주식회사 차량용 소음기
US8191676B2 (en) 2010-11-04 2012-06-05 Ford Global Technologies, Llc Resonator for a dual-flow exhaust system
KR101407222B1 (ko) * 2012-05-11 2014-06-13 손계동 멀티 배기 타입 차량용 머플러
CN103362600A (zh) * 2013-07-25 2013-10-23 成都陵川特种工业有限责任公司 消音筒
KR101526753B1 (ko) * 2013-12-19 2015-06-05 현대자동차주식회사 차량용 소음기
DE102018124198A1 (de) 2017-10-05 2019-04-11 Tenneco Automotive Operating Company Inc. Akustisch abgestimmter Schalldämpfer
US11365658B2 (en) 2017-10-05 2022-06-21 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler
US11199116B2 (en) 2017-12-13 2021-12-14 Tenneco Automotive Operating Company Inc. Acoustically tuned muffler
US11268429B2 (en) 2019-01-17 2022-03-08 Tenneco Automotive Operating Company Inc. Diffusion surface alloyed metal exhaust component with inwardly turned edges
US11268430B2 (en) 2019-01-17 2022-03-08 Tenneco Automotive Operating Company Inc. Diffusion surface alloyed metal exhaust component with welded edges
FR3092361B1 (fr) 2019-02-05 2021-05-21 Akwel Résonateur acoustique
US10975743B1 (en) 2020-03-13 2021-04-13 Tenneco Automotive Operating Company Inc. Vehicle exhaust component
CN111503410A (zh) * 2020-04-01 2020-08-07 西安交通大学 一种赫姆霍兹型消声器
KR20210138910A (ko) * 2020-05-13 2021-11-22 현대자동차주식회사 차량의 배기계 소음 저감 장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1263608A (fr) * 1960-07-22 1961-06-09 Sial S A Dispositif permettant d'améliorer les conditions d'écoulement d'un flux gazeux à caractère périodique
GB1037352A (en) * 1963-03-19 1966-07-27 Walker Mfg Co Improvements in or relating to sound-attenuating mufflers
US3447629A (en) * 1967-02-06 1969-06-03 Arvin Ind Inc Automotive exhaust system and muffler therefor
DE2206875A1 (de) * 1972-02-14 1973-08-16 Motor Condensator Walker Manuf Schalldaempfer
IT1044068B (it) * 1974-11-12 1980-03-20 Renault Silenziatore per motore a combustions
FR2324865A1 (fr) * 1974-11-12 1977-04-15 Peugeot & Renault Silencieux pour moteur a combustion

Also Published As

Publication number Publication date
FR2489881A1 (fr) 1982-03-12
EP0047678A1 (de) 1982-03-17
US4381832A (en) 1983-05-03
FR2489881B1 (de) 1984-04-13
DE3166018D1 (en) 1984-10-18

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