DE69807942T2 - MUFFLER - Google Patents

MUFFLER

Info

Publication number
DE69807942T2
DE69807942T2 DE69807942T DE69807942T DE69807942T2 DE 69807942 T2 DE69807942 T2 DE 69807942T2 DE 69807942 T DE69807942 T DE 69807942T DE 69807942 T DE69807942 T DE 69807942T DE 69807942 T2 DE69807942 T2 DE 69807942T2
Authority
DE
Germany
Prior art keywords
silencing
gas
pipe
subflows
duct system
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
DE69807942T
Other languages
German (de)
Other versions
DE69807942D1 (en
Inventor
Svend Frederiksen
D W Bingham
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.)
SILENTOR HOLDING AS HEDEHUSENE
Original Assignee
SILENTOR HOLDING AS HEDEHUSENE
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 SILENTOR HOLDING AS HEDEHUSENE filed Critical SILENTOR HOLDING AS HEDEHUSENE
Application granted granted Critical
Publication of DE69807942D1 publication Critical patent/DE69807942D1/en
Publication of DE69807942T2 publication Critical patent/DE69807942T2/en
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
    • F01N1/08—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
    • F01N1/02—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
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
    • 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
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • F01N3/2885—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices with exhaust silencers in a single housing
    • 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
    • F01N2470/30—Tubes with restrictions, i.e. venturi or the like, e.g. for sucking air or measuring mass flow
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Silencers (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pipe Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

A silencing apparatus which is throughflowed by a gas and which is arranged within a pipe or duct system, the gas flow at one or more stages within the apparatus being divided into three or more preferably substantially parallel subflows, each or substantially each subflow throughflowing a silencing element (6a...) causing reflective silencing provided by changes in cross section area, said silencing elements being arranged beside each other within an outer envelope, at least 80 % of the volume inside said envelope being constituted by air, gas and/or solid materials, and at least a major part of said volume having silencing functions, said subflows merging downstream of said silencing elements, either within said apparatus or further downstream in said pipe or duct system.
DE69807942T 1997-12-30 1998-12-30 MUFFLER Expired - Lifetime DE69807942T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK155997 1997-12-30
PCT/DK1998/000588 WO1999035378A1 (en) 1997-12-30 1998-12-30 A silencer

Publications (2)

Publication Number Publication Date
DE69807942D1 DE69807942D1 (en) 2002-10-17
DE69807942T2 true DE69807942T2 (en) 2003-04-30

Family

ID=8106064

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69807942T Expired - Lifetime DE69807942T2 (en) 1997-12-30 1998-12-30 MUFFLER

Country Status (5)

Country Link
EP (1) EP1060328B1 (en)
AT (1) ATE224003T1 (en)
AU (1) AU1869699A (en)
DE (1) DE69807942T2 (en)
WO (1) WO1999035378A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9904504D0 (en) * 1999-12-09 1999-12-09 Abb Ab Device and method of silencing
DE10042542A1 (en) * 2000-08-30 2002-03-14 Eberspaecher J Gmbh & Co Exhaust gas cleaning system for motor vehicles, in particular diesel commercial vehicles
DK200300343A (en) * 2003-03-05 2004-09-06 Chris Invest As An exhaust system component for a combustion engine exhaust system
NL1026879C2 (en) * 2004-08-19 2006-02-21 Aarding Thermal Acoustics B V Silencer, profile part and method for manufacturing a panel.
GB2444274A (en) * 2006-12-01 2008-06-04 Bbt Thermotechnology Uk Ltd Thermal acoustic baffle
GB2468850B8 (en) * 2009-03-23 2012-09-05 Vortex Performance Exhausts Ltd An improved exhaust filter
GB2487320B (en) * 2009-03-23 2013-09-25 Vortex Performance Exhausts Ltd An improved exhaust filter
CN104952440B (en) * 2015-06-30 2019-01-11 成都普创通信技术股份有限公司 Array type silencer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO56196C (en) * 1933-11-21
US4105089A (en) * 1975-11-24 1978-08-08 Judd Frederick V H Flow distributor for gas turbine silencers
PL135373B1 (en) * 1981-03-10 1985-10-31 Inst Chemii Nieorganicznej Piston-type silencer
GB8307371D0 (en) * 1983-03-17 1983-04-27 Chillcotts Ltd Exhaust silencer
JPH0814033A (en) * 1994-06-24 1996-01-16 Caterpillar Inc Module catalytic converter for internal combustion engine and muffler
PL180270B1 (en) * 1995-04-11 2001-01-31 Silentor As Combined heat exchanger and sound damping device

Also Published As

Publication number Publication date
EP1060328B1 (en) 2002-09-11
EP1060328A1 (en) 2000-12-20
AU1869699A (en) 1999-07-26
ATE224003T1 (en) 2002-09-15
WO1999035378A1 (en) 1999-07-15
DE69807942D1 (en) 2002-10-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition