CA2039745A1 - Single cavity automobile muffler - Google Patents

Single cavity automobile muffler

Info

Publication number
CA2039745A1
CA2039745A1 CA 2039745 CA2039745A CA2039745A1 CA 2039745 A1 CA2039745 A1 CA 2039745A1 CA 2039745 CA2039745 CA 2039745 CA 2039745 A CA2039745 A CA 2039745A CA 2039745 A1 CA2039745 A1 CA 2039745A1
Authority
CA
Canada
Prior art keywords
noise
mixing chamber
single cavity
automobile muffler
generator
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
CA 2039745
Other languages
French (fr)
Other versions
CA2039745C (en
Inventor
John J. Cain
Dennis Barnes
David Dye
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.)
Noise Cancellation Technologies Inc
Original Assignee
Active Noise and Vibration Technologies Inc
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 Active Noise and Vibration Technologies Inc filed Critical Active Noise and Vibration Technologies Inc
Publication of CA2039745A1 publication Critical patent/CA2039745A1/en
Application granted granted Critical
Publication of CA2039745C publication Critical patent/CA2039745C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/20—Silencing apparatus characterised by method of silencing by using movable parts having oscillating or vibrating movement
    • 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
    • F01N1/065—Silencing apparatus characterised by method of silencing by using interference effect by using an active noise source, e.g. speakers
    • 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
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/22—Silencing apparatus characterised by method of silencing by using movable parts the parts being resilient walls
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3227—Resonators
    • G10K2210/32272—Helmholtz resonators

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

A noise suppression system for use on internal combustion engines and small enough for use in automotive applications is disclosed. A cancellation noise generator and actuator speakers produce a noise to combine with and cancel the engine noise carried in exhaust gases in a mixing chamber.
The resultant noise leaving the mixing chamber is measured by a circulr tubular microphone array to control the noise generator.
CA 2039745 1990-04-09 1991-04-04 Single cavity automobile muffler Expired - Fee Related CA2039745C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50736690A 1990-04-09 1990-04-09
US507,366 1990-04-09

Publications (2)

Publication Number Publication Date
CA2039745A1 true CA2039745A1 (en) 1991-10-10
CA2039745C CA2039745C (en) 2001-06-12

Family

ID=24018364

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2039745 Expired - Fee Related CA2039745C (en) 1990-04-09 1991-04-04 Single cavity automobile muffler

Country Status (5)

Country Link
EP (1) EP0542749B1 (en)
AU (1) AU7572191A (en)
CA (1) CA2039745C (en)
DE (1) DE69128352T2 (en)
WO (1) WO1991015666A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0817165B1 (en) * 1992-05-01 2000-08-23 Fujitsu Ten Limited Noise control device
US5325438A (en) * 1993-02-01 1994-06-28 At&T Bell Laboratories Active noise-cancellation system for automotive mufflers
JPH08512410A (en) * 1993-07-07 1996-12-24 ライストリッツ アクチェンゲゼルシャフト ウント コンパニー アップガーステヒニク Active silencer
IT1267402B1 (en) * 1994-02-22 1997-02-05 Electronic Sound Attenuation S ACTIVE SILENCER FOR EXHAUST GAS.
DE102009045999A1 (en) * 2009-10-26 2011-04-28 J. Eberspächer GmbH & Co. KG Vehicle heating system for use in motor vehicle, comprises burner area for combustion of fuel and combustion air mixture, and exhaust arrangement for guiding burnt fuel and combustion air mixture
DE102013005147A1 (en) 2013-03-26 2014-10-02 Mann + Hummel Gmbh Active muffler device for an internal combustion engine
DE102014001786A1 (en) 2013-03-26 2014-10-02 Mann + Hummel Gmbh Active muffler device for an internal combustion engine
DE102014001721A1 (en) 2013-03-26 2014-10-02 Mann+Hummel Gmbh Active muffler device for an internal combustion engine
FR3005993B1 (en) * 2013-05-23 2015-06-26 Dcns ACTIVE SILENT SYSTEM FOR THE EXHAUST LINE OF A DIESEL ENGINE, IN PARTICULAR A NAVAL PLATFORM
DE102015212041A1 (en) * 2015-06-29 2016-12-29 Mahle International Gmbh Gas-carrying facility

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712412A (en) * 1971-11-18 1973-01-23 Environeering Sound suppressing system
US3936606A (en) * 1971-12-07 1976-02-03 Wanke Ronald L Acoustic abatement method and apparatus
US3789166A (en) * 1971-12-16 1974-01-29 Dyna Magnetic Devices Inc Submersion-safe microphone
US4044203A (en) * 1972-11-24 1977-08-23 National Research Development Corporation Active control of sound waves
FR2385972A2 (en) * 1977-04-01 1978-10-27 Anvar ACTIVE ACOUSTICAL ABSORBERS FOR DUCTS
ZA825676B (en) * 1981-08-11 1983-06-29 Sound Attenuators Ltd Method and apparatus for low frequency active attennuation
US4665549A (en) * 1985-12-18 1987-05-12 Nelson Industries Inc. Hybrid active silencer
GB2204916B (en) * 1987-05-19 1991-10-16 British Gas Plc A silencer
BR8905996A (en) * 1988-02-19 1990-11-20 Noise Cancellation Tech ACTIVE SOUND ATTENUATION SYSTEM FOR ENGINE DISCHARGE AND SIMILAR SYSTEMS

Also Published As

Publication number Publication date
DE69128352T2 (en) 1998-06-10
AU7572191A (en) 1991-10-30
DE69128352D1 (en) 1998-01-15
WO1991015666A1 (en) 1991-10-17
EP0542749A4 (en) 1994-05-25
CA2039745C (en) 2001-06-12
EP0542749B1 (en) 1997-12-03
EP0542749A1 (en) 1993-05-26

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed