EP0274659A1 - Silencieux à absorption/réflexion - Google Patents

Silencieux à absorption/réflexion Download PDF

Info

Publication number
EP0274659A1
EP0274659A1 EP87118057A EP87118057A EP0274659A1 EP 0274659 A1 EP0274659 A1 EP 0274659A1 EP 87118057 A EP87118057 A EP 87118057A EP 87118057 A EP87118057 A EP 87118057A EP 0274659 A1 EP0274659 A1 EP 0274659A1
Authority
EP
European Patent Office
Prior art keywords
resonator
exhaust
silencer
muffler
section
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.)
Granted
Application number
EP87118057A
Other languages
German (de)
English (en)
Other versions
EP0274659B1 (fr
Inventor
Hermann Dipl.-Ing. Ermer
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.)
Leistritz AG
Original Assignee
Leistritz AG
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 Leistritz AG filed Critical Leistritz AG
Priority to AT87118057T priority Critical patent/ATE63973T1/de
Publication of EP0274659A1 publication Critical patent/EP0274659A1/fr
Application granted granted Critical
Publication of EP0274659B1 publication Critical patent/EP0274659B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with 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
    • 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
    • F01N2210/00—Combination of methods of silencing
    • F01N2210/04—Throttling-expansion and 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
    • 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 invention relates to an absorption exhaust silencer, in particular a multi-stage exhaust silencer with a main silencer upstream of a secondary silencer with a resonator.
  • a similar vibration structure is already known from DE-GM 17 12 462.
  • the resonator provided there is used for power tuning to support the charge exchange process, especially in single-cylinder engines, with a special pressure increase to be fed back.
  • the resonator coupled there has nothing to do with acoustic attenuation of certain frequencies.
  • V is the volume of the resonator
  • 1 is the length of the resonator tube
  • A is the cross section of the resonator tube
  • optimal damping ratios result in an embodiment in which the ratio of the cross section A R of the resonator tube to the cross section A AK of the exhaust gas duct in the region of the mouth of the resonator tube in the exhaust gas duct is approximately 1: 3 and if the distance between them is also greater the resonator tube and the exhaust duct inlet cross section is approximately equal to its diameter.
  • the perforated exhaust pipe passing through the absorber part should be designed as curved as possible, and it has also proven to be advantageous if the exhaust pipe has a counter cone downstream of the mouth of the resonator pipe.
  • absorption exhaust muffler with an additional built-in special resonator can also be used on its own, it has proven to be particularly effective to use it as part of a multi-stage exhaust muffler system, and because of its very favorable damping properties it is sufficient to have a rear muffler connected downstream to be designed as a simple Helmholtz resonator, whereas in the case of previous multi-stage exhaust silencers it was usually necessary to design the rear silencer in a very complex manner in order to achieve the desired damping values. It is up to the particular engine conditions whether a front silencer is used or not, the structure of the front silencer being relatively uncritical with regard to the damping properties of the main silencer.
  • the muffler shown in FIGS. 1 and 2 which is particularly suitable as a center muffler in multi-stage exhaust muffler systems, comprises a preferably made of drawn Half-shell muffler housing 1, in which a first absorber-muffler chamber 2 is arranged, which is penetrated by a curved exhaust pipe 3 provided with gas outlet bores 4, which are only indicated in the drawing. From the inlet pipe 5, which can be coupled, for example, to the outlet of a pre-silencer, the exhaust pipe initially widens to a nominal exhaust duct inlet cross section D.
  • the arrangement is chosen such that the central section 9 of the U-shaped resonator tube runs essentially closely adjacent to one of the narrow sides of the flat muffler housing 1, so that it lies between this narrow side and a corresponding indentation 10 between the absorber section 2 and the Resonator space 8 arranged lid 11 can be inserted.
  • a counter cone 12 is provided downstream of the mouth of the resonator tube 7, the distance of which from the point 6, at which the nominal exhaust gas duct cross section D is reached, should correspond approximately to this diameter D.
  • the frequency F at which the start-up hum occurs is determined by the basic motor frequency at the corresponding speed n and results in which means a frequency of about 50 Hz for a 4-cylinder engine and a frequency of 75 Hz for a 6-cylinder engine.
  • the frequency of the resonator formed by the resonator tube 7 and the resonance chamber 8 is placed on this corresponding frequency value, this frequency resulting where V is the resonator volume, A is the cross-sectional area of the resonator tube and 1 is its length.
  • V is the resonator volume
  • A is the cross-sectional area of the resonator tube and 1 is its length.
  • ratio of the resonator tube cross-section to the exhaust duct inlet cross-section D was chosen to be about 1: 3, which - as was proven by extensive tests - results in particularly good damping properties.
  • a simple Helmholtz resonator is shown as it can be used in connection with a silencer according to Figures 1 and 2 as a rear silencer. Due to the particularly advantageous damping properties of the resonator according to FIGS. 1 and 2, no complicated rear silencer is required, but a simple rear silencer such as that shown in FIG. 3 is sufficient for practically all applications.

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)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
EP87118057A 1986-12-09 1987-12-07 Silencieux à absorption/réflexion Expired - Lifetime EP0274659B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87118057T ATE63973T1 (de) 1986-12-09 1987-12-07 Absorptions-/reflexions-abgasschalldaempfer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3641942 1986-12-09
DE19863641942 DE3641942A1 (de) 1986-12-09 1986-12-09 Absorptions-abgasschalldaempfer

Publications (2)

Publication Number Publication Date
EP0274659A1 true EP0274659A1 (fr) 1988-07-20
EP0274659B1 EP0274659B1 (fr) 1991-05-29

Family

ID=6315740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118057A Expired - Lifetime EP0274659B1 (fr) 1986-12-09 1987-12-07 Silencieux à absorption/réflexion

Country Status (4)

Country Link
EP (1) EP0274659B1 (fr)
AT (1) ATE63973T1 (fr)
DE (1) DE3641942A1 (fr)
ES (1) ES2022280B3 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0802308A1 (fr) * 1996-04-18 1997-10-22 HEINRICH GILLET GMBH & CO. KG Silencieux
WO2004031545A1 (fr) * 2002-10-02 2004-04-15 Carrier Corporation Silencieux absorbant/reactif pour compresseurs a vitesse variable
CN100365703C (zh) * 2003-06-17 2008-01-30 本田技研工业株式会社 主动振动噪声控制装置
DE102008046870A1 (de) 2008-09-11 2009-11-26 Bombardier Transportation Gmbh Schalldämpfung im Abgasweg eines Schienenfahrzeug-Verbrennungsmotors
US8160266B2 (en) 2003-06-17 2012-04-17 Honda Motor Co. Ltd. Active vibratory noise control apparatus matching characteristics of audio devices
WO2016007609A1 (fr) * 2014-07-09 2016-01-14 Aai Corporation Atténuation du bruit d'un moteur à l'aide d'un résonateur inverse

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330129C2 (de) * 1993-09-06 2002-08-29 Bayerische Motoren Werke Ag Abgasanlage einer Brennkraftmaschine
AU730401B2 (en) * 1996-09-30 2001-03-08 Silentor Notox A/S Gas flow silencer
US6520286B1 (en) 1996-09-30 2003-02-18 Silentor Holding A/S Silencer and a method of operating a vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE727758C (de) * 1940-12-10 1942-11-11 Eberspaecher J Schalldaempferanordnung, bei der die zwischen Motor und Schalldaempfer vorhandene Leitung etwa bei einem Viertel der Wellenlaenge mit der Grundschwingung in Resonanz ist
FR1158585A (fr) * 1956-09-18 1958-06-17 Perfectionnement aux silencieux devant être montés sur un tube d'échappement court de moteur à explosions
DE2115240A1 (de) * 1971-03-30 1972-10-19 Zeuna Starker KG, 8900 Augsburg Schalldampfer
FR2131431A5 (fr) * 1972-02-14 1972-11-10 Motor Condensator Walter
DE2856889A1 (de) * 1978-12-30 1980-11-20 Zeuna Staerker Kg Schalldaempfer in der abgasleitung eines verbrennungsmotors, insbesondere an einem kraftfahrzeug
EP0047678A1 (fr) * 1980-09-08 1982-03-17 Automobiles Peugeot Silencieux d'échappement à résonateur incorporé, pour moteur à combustion

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1712462U (de) * 1954-06-02 1955-12-08 Auto Union Gmbh Auspuffanlage fuer zweitakt-brennkraftmaschinen.
US3209858A (en) * 1963-06-25 1965-10-05 Walker Mfg Co Muffler having depressed channel forming tuning passages
DE2706957C2 (de) * 1977-02-18 1983-04-07 Friedrich Boysen Gmbh & Co Kg, 7272 Altensteig Abgasschalldämpfer
DE2839756C2 (de) * 1978-09-13 1984-08-30 Friedrich Boysen Gmbh & Co Kg, 7272 Altensteig Abgas-Schalldämpfer für Brennkraftmaschinen mit gesonderten Abgasleitungen
DE3035332A1 (de) * 1980-09-19 1982-05-06 Fa. J. Eberspächer, 7300 Esslingen Kombinierter abgasschalldaempfer
FR2502693A1 (fr) * 1981-03-26 1982-10-01 Wissembourg Sa Const Metallurg Silencieux pour moteurs de vehicules automobiles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE727758C (de) * 1940-12-10 1942-11-11 Eberspaecher J Schalldaempferanordnung, bei der die zwischen Motor und Schalldaempfer vorhandene Leitung etwa bei einem Viertel der Wellenlaenge mit der Grundschwingung in Resonanz ist
FR1158585A (fr) * 1956-09-18 1958-06-17 Perfectionnement aux silencieux devant être montés sur un tube d'échappement court de moteur à explosions
DE2115240A1 (de) * 1971-03-30 1972-10-19 Zeuna Starker KG, 8900 Augsburg Schalldampfer
FR2131431A5 (fr) * 1972-02-14 1972-11-10 Motor Condensator Walter
DE2856889A1 (de) * 1978-12-30 1980-11-20 Zeuna Staerker Kg Schalldaempfer in der abgasleitung eines verbrennungsmotors, insbesondere an einem kraftfahrzeug
EP0047678A1 (fr) * 1980-09-08 1982-03-17 Automobiles Peugeot Silencieux d'échappement à résonateur incorporé, pour moteur à combustion

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0802308A1 (fr) * 1996-04-18 1997-10-22 HEINRICH GILLET GMBH & CO. KG Silencieux
WO2004031545A1 (fr) * 2002-10-02 2004-04-15 Carrier Corporation Silencieux absorbant/reactif pour compresseurs a vitesse variable
US6799657B2 (en) 2002-10-02 2004-10-05 Carrier Corporation Absorptive/reactive muffler for variable speed compressors
CN100365703C (zh) * 2003-06-17 2008-01-30 本田技研工业株式会社 主动振动噪声控制装置
US7620188B2 (en) 2003-06-17 2009-11-17 Honda Motor Co., Ltd. Cylinder responsive vibratory noise control apparatus
US8160266B2 (en) 2003-06-17 2012-04-17 Honda Motor Co. Ltd. Active vibratory noise control apparatus matching characteristics of audio devices
DE102008046870A1 (de) 2008-09-11 2009-11-26 Bombardier Transportation Gmbh Schalldämpfung im Abgasweg eines Schienenfahrzeug-Verbrennungsmotors
DE202009012225U1 (de) 2008-09-11 2009-12-24 Bombardier Transportation Gmbh Schalldämpfung im Abgasweg eines Schienenfahrzeug-Verbrennungsmotors
WO2016007609A1 (fr) * 2014-07-09 2016-01-14 Aai Corporation Atténuation du bruit d'un moteur à l'aide d'un résonateur inverse
US9394812B2 (en) 2014-07-09 2016-07-19 Aai Corporation Attenuating engine noise using a reverse resonator

Also Published As

Publication number Publication date
DE3641942C2 (fr) 1992-10-22
ES2022280B3 (es) 1991-12-01
EP0274659B1 (fr) 1991-05-29
ATE63973T1 (de) 1991-06-15
DE3641942A1 (de) 1988-06-23

Similar Documents

Publication Publication Date Title
DE4435296C2 (de) Kraftfahrzeug mit einer Brennkraftmaschine
DE2822701C2 (de) Abgasschalldämpfer für Brennkraftmaschine
DE19956172C5 (de) Doppelkammerdämpfer
EP0573895A1 (fr) Turbocompresseur avec un compresseur radial
EP1352172A1 (fr) Silencieux comportant une pluralite de chambres de resonance
DE19504223A1 (de) Schalldämpfer für den Ansaugkanal einer Brennkraftmaschine
EP0274659A1 (fr) Silencieux à absorption/réflexion
EP0713046B1 (fr) Dispositif de silencieux pour tuyaux
DE102010043267A1 (de) Schalldämpfer für ein Lufteinlasssystem eines Verbrennungsmotors
DE2706957C2 (de) Abgasschalldämpfer
DE2908506A1 (de) Schalldaempfer fuer verbrennungskraftmaschinen
DE19743446A1 (de) Abgasanlage für eine Brennkraftmaschine
DE3034575C2 (fr)
DE7307335U (de) Abgasschalldaempfer fuer zweitakt- motore
DE2206875A1 (de) Schalldaempfer
DE642603C (de) Schalldaempfer, insbesondere fuer Zweitaktbrennkraftmaschinen
DE4140429A1 (de) Schalldaempfer fuer verbrennungsmotore
DE10254631B4 (de) Schalldämpfer für eine Abgasanlage einer Brennkraftmaschine
DE2930668A1 (de) Vorrichtung zur reduzierung der ansaug- und/oder auspuffgeraeusche fuer schnellaufende brennkraftmaschinen, insbesondere fuer brennkraftmaschinenangetriebene kettensaegen, rasenmaeher und kleinkraftraeder
DE60203059T2 (de) Geräuscharmer integrierter Luftfilter
DE102018112963A1 (de) Schalldämpfer für eine Abgasanlage einer Brennkraftmaschine
DE102018132787A1 (de) Fahrzeugrahmen mit akustischem Volumen für eine Abgasanlage
DE3836589A1 (de) Kompaktschalldaempfer fuer nutzfahrzeuge
DE884434C (de) Schalldaempfer, insbesondere fuer Brennkraftmaschinen
EP0163024B1 (fr) Silencieux d'échappement à réflexion

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE ES FR GB IT SE

17P Request for examination filed

Effective date: 19881209

17Q First examination report despatched

Effective date: 19891207

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE ES FR GB IT SE

REF Corresponds to:

Ref document number: 63973

Country of ref document: AT

Date of ref document: 19910615

Kind code of ref document: T

ITF It: translation for a ep patent filed
ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 87118057.6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19981223

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19981228

Year of fee payment: 12

Ref country code: AT

Payment date: 19981228

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19991203

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991208

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19991209

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19991228

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991231

BERE Be: lapsed

Owner name: LEISTRITZ A.G.

Effective date: 19991231

EUG Se: european patent has lapsed

Ref document number: 87118057.6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001207

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20001207

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011208

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20020112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051207