AU5286699A - Device and method for reducing the noise emissions of internal combustion engines and for diagnosing the same - Google Patents

Device and method for reducing the noise emissions of internal combustion engines and for diagnosing the same

Info

Publication number
AU5286699A
AU5286699A AU52866/99A AU5286699A AU5286699A AU 5286699 A AU5286699 A AU 5286699A AU 52866/99 A AU52866/99 A AU 52866/99A AU 5286699 A AU5286699 A AU 5286699A AU 5286699 A AU5286699 A AU 5286699A
Authority
AU
Australia
Prior art keywords
signals
sound waves
internal combustion
diagnosing
combustion engines
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.)
Abandoned
Application number
AU52866/99A
Inventor
Friedmund Nagel
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19832979A external-priority patent/DE19832979C1/en
Priority claimed from DE1998143615 external-priority patent/DE19843615C2/en
Application filed by Individual filed Critical Individual
Publication of AU5286699A publication Critical patent/AU5286699A/en
Abandoned legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
    • F02C7/045—Air intakes for gas-turbine plants or jet-propulsion plants having provisions for noise suppression
    • 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
    • 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
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
    • G10K11/17825—Error signals
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1783—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase handling or detecting of non-standard events or conditions, e.g. changing operating modes under specific operating conditions
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/96—Preventing, counteracting or reducing vibration or noise
    • F05D2260/962—Preventing, counteracting or reducing vibration or noise by means of "anti-noise"

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (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)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Testing Of Engines (AREA)

Abstract

The invention relates to a device and a method for actively reducing the noise emissions of internal combustion engines (1) in an exhaust pipe (2) which guides a stream of exhaust gas (3). To this end, the device has at least one first electroacoustic transducer (3) for converting the sound waves (30) into first signals (31) which are a measure of the frequency, amplitude and phase of the sound waves (30). An electronic control unit (14) converts the first signals (31) into second signals (32). At least one second electroacoustic transducer (15), which is situated centrally in the stream of exhaust gas (3), converts the second signals (32) into compensating sound waves (33) which have a frequency, amplitude and phase so that the sound waves (30) and the compensating sound waves (33) at least partially cancel each other out. The device can also be used for diagnosing the status or functioning of the internal combustion engine and to this end, has a comparison unit (23) in which the first signals (31) of the first electroacoustic transducer (13) are compared with specified signals.
AU52866/99A 1998-07-22 1999-07-22 Device and method for reducing the noise emissions of internal combustion engines and for diagnosing the same Abandoned AU5286699A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19832979 1998-07-22
DE19832979A DE19832979C1 (en) 1998-07-22 1998-07-22 Exhaust noise suppresser for motor vehicle
DE19843615 1998-09-23
DE1998143615 DE19843615C2 (en) 1998-09-23 1998-09-23 Device and method for diagnosing combustion engines
PCT/EP1999/005251 WO2000005489A1 (en) 1998-07-22 1999-07-22 Device and method for reducing the noise emissions of internal combustion engines and for diagnosing the same

Publications (1)

Publication Number Publication Date
AU5286699A true AU5286699A (en) 2000-02-14

Family

ID=26047606

Family Applications (1)

Application Number Title Priority Date Filing Date
AU52866/99A Abandoned AU5286699A (en) 1998-07-22 1999-07-22 Device and method for reducing the noise emissions of internal combustion engines and for diagnosing the same

Country Status (6)

Country Link
EP (1) EP1099045B1 (en)
JP (1) JP2002521601A (en)
AT (1) ATE226684T1 (en)
AU (1) AU5286699A (en)
DE (1) DE59903183D1 (en)
WO (1) WO2000005489A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000030548A (en) * 2000-03-06 2000-06-05 윤선용 Total banking service using service-point on internet
DE10021031A1 (en) * 2000-05-02 2001-11-08 Mann & Hummel Filter Line system with electromechanical transducer for generating a correction noise
US20020039422A1 (en) * 2000-09-20 2002-04-04 Daly Paul D. Driving mode for active noise cancellation
FR2843999B1 (en) 2002-09-03 2006-01-27 Comptoir De La Technologie ACTIVE MOUTH NOISE ATTENUATION DEVICE AT AN EXHAUST OR ADMISSION PIPE
DE10257245A1 (en) * 2002-12-07 2004-07-15 Alstom Technology Ltd Method and device for influencing thermoacoustic vibrations in combustion systems
AT414307B (en) * 2004-06-08 2006-12-15 Reineke Horst DEVICE FOR NOISE REDUCTION
TR200800740A2 (en) * 2008-02-06 2008-06-23 Özel Zafer Silencer that creates a vacuum in the combustion engine exhaust.
EP2293288A1 (en) 2009-09-07 2011-03-09 Remus Innovation Forschungs- und Abgasanlagen-Produktionsgesellschaft m.b.H. Device for discharging acoustic signals for vehicles
DE102011106647A1 (en) * 2011-07-05 2013-01-10 J. Eberspächer GmbH & Co. KG ANTISCHALL SYSTEM FOR EXHAUST SYSTEMS AND METHOD FOR CONTROLLING THE SAME
DE102014015762B4 (en) 2014-10-27 2016-10-13 Mtu Friedrichshafen Gmbh Emission signature modification device
BR112017012808A2 (en) * 2014-12-19 2018-01-02 Gen Electric active noise control system
DE102016002449A1 (en) * 2016-02-27 2017-08-31 Audi Ag Motor vehicle with a control device for at least one speaker of an exhaust system of the motor vehicle
CN109478402B (en) 2016-04-20 2023-07-21 通用电气公司 Active noise cancellation system and apparatus
CN112523851A (en) * 2020-12-23 2021-03-19 湖州力椿汽车零部件有限公司 Environment-friendly secondary muffler with tail gas treatment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE218185C (en)
US4665549A (en) * 1985-12-18 1987-05-12 Nelson Industries Inc. Hybrid active silencer
US5222148A (en) * 1992-04-29 1993-06-22 General Motors Corporation Active noise control system for attenuating engine generated noise
US5377275A (en) * 1992-07-29 1994-12-27 Kabushiki Kaisha Toshiba Active noise control apparatus
JPH0764568A (en) * 1993-08-24 1995-03-10 Nippondenso Co Ltd Sounding body for active silencing device
JPH0798591A (en) * 1993-09-29 1995-04-11 Fujitsu Ten Ltd Duct speaker arrangement for canceling noise
US5828759A (en) * 1995-11-30 1998-10-27 Siemens Electric Limited System and method for reducing engine noise

Also Published As

Publication number Publication date
WO2000005489A1 (en) 2000-02-03
JP2002521601A (en) 2002-07-16
DE59903183D1 (en) 2002-11-28
ATE226684T1 (en) 2002-11-15
EP1099045A1 (en) 2001-05-16
EP1099045B1 (en) 2002-10-23

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase