EP1138887A2 - Transducteur acoustique pour les pulsations de gaz d'échappement - Google Patents

Transducteur acoustique pour les pulsations de gaz d'échappement Download PDF

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Publication number
EP1138887A2
EP1138887A2 EP01108092A EP01108092A EP1138887A2 EP 1138887 A2 EP1138887 A2 EP 1138887A2 EP 01108092 A EP01108092 A EP 01108092A EP 01108092 A EP01108092 A EP 01108092A EP 1138887 A2 EP1138887 A2 EP 1138887A2
Authority
EP
European Patent Office
Prior art keywords
sound
sound transducer
transducer according
motor vehicle
internal combustion
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
EP01108092A
Other languages
German (de)
English (en)
Other versions
EP1138887B1 (fr
EP1138887A3 (fr
Inventor
Anton Dr. Wolf
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.)
Woco Franz Josef Wolf and Co GmbH
Original Assignee
Woco Franz Josef Wolf and Co GmbH
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 Woco Franz Josef Wolf and Co GmbH filed Critical Woco Franz Josef Wolf and Co GmbH
Publication of EP1138887A2 publication Critical patent/EP1138887A2/fr
Publication of EP1138887A3 publication Critical patent/EP1138887A3/fr
Application granted granted Critical
Publication of EP1138887B1 publication Critical patent/EP1138887B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking 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
    • 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

Definitions

  • the invention relates to a sound converter for exhaust gas pulsations.
  • the character of a motor vehicle is determined by a complex variety of perceptions certainly. Some of these perceptions are visual, others are tangible and after all, some may be audible. This is from an internal combustion engine emitted sound from a mixture of its basic firing frequency, higher harmonics this frequency and resonances of all its components are determined. Since the beginning of In the last century, generations of automotive developers have been concerned with the audible sound generated by a motor vehicle through targeted reduction condition, the developers of sound attenuation essentially three after different damper types acting physical principles are available, namely Helmholtz resonators, dissipation dampers and absorption dampers. For example from DE 196 15 917 A1 an intake silencer is known, while in the not previously published DE 199 48 146 describes an exhaust silencer.
  • the object of the invention is therefore to dynamically and acoustically an internal combustion engine sporty design, especially in the engine compartment and thus in the vehicle interior and exterior noise to sound engine-dependent airborne sound.
  • this object is achieved by a sound transducer with a branching element, that with an exhaust system of an internal combustion engine, in particular a motor vehicle, is connected to branch off exhaust gas pulsations, and a transducer head, over the airborne sound based at least on the exhaust gas pulsations in the room of Internal combustion engine is radiated.
  • the transducer head is designed as a resonance body is, preferably comprising a support frame and a membrane clamped therein.
  • the transducer head at least partially can be placed in the space of the internal combustion engine and / or in the vehicle interior.
  • the frequency characteristic and / or amplitude of the radiated airborne sound can or can according to the invention by the coupling point of the branch member to the exhaust system, such as to a specific exhaust manifold area, an exhaust pipe or the like, the placement of the transducer head, the geometry and / or dimensioning of the Sound transducer, such as its pipes, the resonance body of the sound transducer head or the like, and / or the elastic properties of the membrane of the resonance body can be determined his.
  • a valve for switching on and off, in particular stepwise, can also be used of the sound converter, preferably operable by the driver of the motor vehicle and / or automatically controlled depending on the speed of the internal combustion engine and / or a noise level, outside and / or inside the motor vehicle his.
  • valve is connected to an audio system such as a stereo, a hands-free system or the like, coupled to the motor vehicle.
  • an audio system such as a stereo, a hands-free system or the like
  • Embodiments with at least one filter and / or an amplifier for setting, preferably regulating, the frequency characteristic and / or amplitude of the radiated airborne sound is proposed.
  • the filter and / or the amplifier have higher harmonics Highlight or highlight the basic firing frequency of the internal combustion engine.
  • An attenuator can also be used to absorb selected mechanical vibrations be provided.
  • a sound transducer with a modulation element via which the Position of the transducer head is variable and / or that the filter, the amplifier and / or comprises the attenuator, proposed, the modulator preferably is arranged between the branch member and the valve.
  • the modulation element by the driver of the motor vehicle is adjustable and / or automatically controllable.
  • the transducer head, the valve and / or the modulation element in each case at least one electrical and / or electronic component, preferably controllable via a microcontroller, comprises or comprise.
  • the exhaust gas pulsations and / or the airborne sound into an electrical signal is or can be converted, the electrical signal being modulatable and, preferably can be played back via an audio system.
  • the invention is therefore based on the surprising finding that by means of a sound transducer for exhaust gas pulsations of an internal combustion engine, so to speak, an impedance converter is provided, in particular by coupling to the pulsations of an exhaust gas flow in the engine compartment and / or interior of a motor vehicle depending on engine regulations Airborne sound emits.
  • the pulsations are preferably via a membrane of a resonance body emitted as airborne sound.
  • the impedance converter can be connected depending on the desired frequency characteristic different coupling points of the exhaust system happen.
  • the sound radiating Component in the form of a resonator-like transducer head with an integrated Membrane can be made in a wide variety of designs and from a wide variety of materials further adjustment of the volume and the sound of a motor vehicle are produced, the size and positioning of the transducer head in the engine compartment and / or in Vehicle interior is also relevant for coordination.
  • the processing of vibrations in the transducer, especially in electrical signals converted, can also via a microcontroller and / or using at least one Amplifiers, filters and / or the like, automatically and / or by a driver Motor vehicle be controllable.
  • An exhaust system 2 is conventionally attached to an engine 1 of a motor vehicle, which in turn exhaust manifold branches 3, 3 ', 3 ", 3' '', the number of which depends on the number of Cylinder of the engine 1 depends, and includes an exhaust pipe 4, among other things, as in Figure 1 shown.
  • a sound converter 10 according to the invention is attached to such an exhaust system 2 connectable, namely via a branch pipe, such as that connected to the exhaust pipe 4 and thus connected to the four exhaust manifold branches 3, 3 ', 3 "and 3"' ' 11, the branch pipe 11 'connected to two exhaust manifold branches 3, 3' or the branch pipe 11 ′′ connected to an exhaust manifold branch 3, the branch pipe 11, 11 'or 11 "via a modulation element 12, a valve 13 and a guide tube 14 in turn connected to a transducer head 15 arranged in the motor area is.
  • a branch pipe such as that connected to the exhaust pipe 4 and thus connected to the four exhaust manifold branches 3, 3 ', 3 "and 3"' ' 11, the branch pipe 11 'connected to two exhaust manifold branches 3, 3' or the branch pipe 11 ′′ connected to an exhaust manifold branch 3, the branch pipe 11, 11 'or 11 "via a modulation element 12, a valve 13 and a guide tube 14 in turn connected to a transducer head 15 arranged in
  • the coupling point of the branch pipe 11, 11 'or 11 "of the sound transducer 10 to the Exhaust system 2 determines the basic frequency of the exhaust gas pulsations of the engine 1, which in the Sound converter 10 is coupled.
  • Mechanical can be via the modulation element 12 Partially absorb vibrations, the position of the transducer head 15 in the engine compartment adjust and filter out frequencies in at least a first frequency range and in amplify at least a second frequency range.
  • the valve 13 allows the transducer 10, depending on the driver's wish and also automatically depending on, for example, the state of a stereo, a hands-free system or the like, zu0. switch off.
  • the guide tube 14 can also be the frequency characteristic and / or Modulate the amplitude of the vibrations transferred in the transducer 10. Finally allows the configuration of the transducer head 15 as a resonance body further modulation the vibrations and a radiation of the set airborne sound.
  • FIGS. 2a, 2b and 2c show alternative configurations of the transducer head 15a, 15b and 15c.
  • each transducer head 15a, 15b and 15c comprises a support frame 16a, 16b and 16c, in which a membrane 17a, 17b and 17c is clamped.
  • the material of the membrane 17a, 17b or 17c which is an elastomer, a plastic or Sheet metal can include, and the type of clamping the membrane 17a, 17b and 17c in the Carrier frame 16a, 16b and 16c can finally be the airborne sound to be radiated in his Adjust sound and volume.
  • the sound transducer according to the invention can also be electrical and electronic Components for further tuning the frequency characteristic and / or the level of sound included.
  • the sound transducer according to the invention thus gives the possibility for the first time not only to attenuate certain frequency characteristics from the noise of a vehicle, but specifically desired sounds in a certain area of a vehicle, for example, under the bonnet to emit. It is not just an easy one Transfer of vibrations possible, but also processing them at the same time for setting an individually desired "sound”.
  • This "sound" is special Engine order dependent, including the possibility of suggesting a higher one Number of cylinders by, for example, a four-cylinder engine due to an eight-cylinder engine emphasizing higher harmonics sounds.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Exhaust Silencers (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
EP01108092A 2000-03-29 2001-03-29 Transducteur acoustique pour les pulsations de gaz d'échappement Expired - Lifetime EP1138887B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10015697A DE10015697C1 (de) 2000-03-29 2000-03-29 Schallwandler für Abgaspulsationen
DE10015697 2000-03-29

Publications (3)

Publication Number Publication Date
EP1138887A2 true EP1138887A2 (fr) 2001-10-04
EP1138887A3 EP1138887A3 (fr) 2002-06-19
EP1138887B1 EP1138887B1 (fr) 2003-10-01

Family

ID=7636887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01108092A Expired - Lifetime EP1138887B1 (fr) 2000-03-29 2001-03-29 Transducteur acoustique pour les pulsations de gaz d'échappement

Country Status (2)

Country Link
EP (1) EP1138887B1 (fr)
DE (2) DE10015697C1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002077969A1 (fr) * 2001-03-23 2002-10-03 Mahle Filtersysteme Gmbh Dispositif de transmission de son pour vehicule automobile
WO2003101780A1 (fr) * 2002-05-29 2003-12-11 Daimlerchrysler Ag Dispositif de configuration sonore pour un vehicule automobile
EP1816022A1 (fr) 2006-01-31 2007-08-08 Nissan Motor Company Limited Appareil et procédé de transmission du son de l'entrée d'air
DE102005006914B4 (de) * 2005-02-16 2008-05-29 Woco Industrietechnik Gmbh Vorrichtung zur Schallkopplung zwischen einem Ansaugtrakt und/oder Motorraum und einem Fahrzeuginnenraum eines Kraftfahrzeuges
CN102840023A (zh) * 2011-06-21 2012-12-26 祁成 汽车排气管
ES2405729R1 (es) * 2010-11-30 2013-06-19 Univ Catalunya Politecnica Sistema para modificar la sonoridad de motor endotérmico
EP3156300A1 (fr) * 2015-10-06 2017-04-19 Honda Motor Company Limited Appareil acoustique de véhicule et procédés d'utilisation et fabrication correspondante
GB2556046A (en) * 2016-11-14 2018-05-23 Jaguar Land Rover Ltd Vehicle exhaust system with sound transmission device
DE102017222144A1 (de) 2017-12-07 2019-06-13 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung und Verfahren zum Erzeugen eines Geräusches bei einem Kraftfahrzeug, sowie Kraftfahrzeug
US11028743B2 (en) * 2017-04-21 2021-06-08 Ferrari S.P.A. Road vehicle with an internal combustion engine and provided with an exhaust noise transmission device
US20230039045A1 (en) * 2021-08-03 2023-02-09 Mclaren Automotive Limited Sound bypass

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10221447A1 (de) * 2002-05-15 2003-11-27 Mahle Filtersysteme Gmbh Schallwandler für ein Kraftfahrzeug
DE10259099A1 (de) * 2002-12-18 2004-07-01 Mahle Filtersysteme Gmbh Schallwandler für ein Kraftfahrzeug
US7845466B2 (en) 2007-08-28 2010-12-07 Visteon Global Technologies, Inc. Sound generator with structurally and acoustically coupled sound radiation panel and method for manufacturing the same
DE102011056615A1 (de) * 2011-12-19 2013-06-20 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Geräuschübertragungssystem
DE102012109668A1 (de) 2012-10-11 2014-04-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Vorrichtung zur Geräuschübertragung bei einem Kraftfahrzeug
DE102020007483A1 (de) 2020-12-08 2022-06-09 Mercedes-Benz Group AG Abgastrakt für eine Verbrennungskraftmaschine eines Kraftfahrzeugs

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19615917A1 (de) 1996-04-22 1997-10-30 Wolf Woco & Co Franz J Ansaugschalldämpfer und Kraftfahrzeug
DE19948146A1 (de) 1999-09-28 2001-03-29 Wolf Woco & Co Franz J Abgasschalldämpfer

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR642008A (fr) * 1927-10-06 1928-08-17 Avertisseur pour véhicules automobiles
JPH02248610A (ja) * 1989-03-22 1990-10-04 Mazda Motor Corp エンジンの排気音導入装置
DE4233252C1 (de) * 1992-10-02 1993-12-16 Bayerische Motoren Werke Ag Kraftfahrzeug, insbesondere PKW
DE4435296C2 (de) * 1994-10-01 2002-04-25 Bayerische Motoren Werke Ag Kraftfahrzeug mit einer Brennkraftmaschine
DE19746523B4 (de) * 1996-11-02 2006-06-08 Volkswagen Ag Verfahren zur Klangerzeugung in Kraftfahrzeugen und eine Schaltungsanordnung zur Durchführung des Verfahrens
DE19704376A1 (de) * 1997-02-06 1998-08-13 Knecht Filterwerke Gmbh Luftfilteranordnung
DE19831576A1 (de) * 1998-07-14 2000-01-20 Tuev Automotive Gmbh Unternehm Verfahren und Vorrichtung zum Erzeugen von den Betrieb eines Verbrennungsmotors entsprechenden Geräuschen im Innenraum eines Kraftfahrzeugs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19615917A1 (de) 1996-04-22 1997-10-30 Wolf Woco & Co Franz J Ansaugschalldämpfer und Kraftfahrzeug
DE19948146A1 (de) 1999-09-28 2001-03-29 Wolf Woco & Co Franz J Abgasschalldämpfer

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6848410B2 (en) 2001-03-23 2005-02-01 Mahle Filtersysteme Gmbh Sound transmission device for a motor vehicle
WO2002077969A1 (fr) * 2001-03-23 2002-10-03 Mahle Filtersysteme Gmbh Dispositif de transmission de son pour vehicule automobile
WO2003101780A1 (fr) * 2002-05-29 2003-12-11 Daimlerchrysler Ag Dispositif de configuration sonore pour un vehicule automobile
DE102005006914B4 (de) * 2005-02-16 2008-05-29 Woco Industrietechnik Gmbh Vorrichtung zur Schallkopplung zwischen einem Ansaugtrakt und/oder Motorraum und einem Fahrzeuginnenraum eines Kraftfahrzeuges
US7487857B2 (en) 2005-02-16 2009-02-10 Woco Industrietchnik Gmbh Sonic coupling between an intake tract or engine compartment and the interior of a motor vehicle
EP1816022A1 (fr) 2006-01-31 2007-08-08 Nissan Motor Company Limited Appareil et procédé de transmission du son de l'entrée d'air
ES2405729R1 (es) * 2010-11-30 2013-06-19 Univ Catalunya Politecnica Sistema para modificar la sonoridad de motor endotérmico
CN102840023A (zh) * 2011-06-21 2012-12-26 祁成 汽车排气管
EP3156300A1 (fr) * 2015-10-06 2017-04-19 Honda Motor Company Limited Appareil acoustique de véhicule et procédés d'utilisation et fabrication correspondante
US9682652B2 (en) 2015-10-06 2017-06-20 Honda Motor Co., Ltd. Vehicle acoustic apparatus, and methods of use and manufacture thereof
GB2556046A (en) * 2016-11-14 2018-05-23 Jaguar Land Rover Ltd Vehicle exhaust system with sound transmission device
GB2556046B (en) * 2016-11-14 2019-12-18 Jaguar Land Rover Ltd Vehicle exhaust system with sound transmission device
US11028743B2 (en) * 2017-04-21 2021-06-08 Ferrari S.P.A. Road vehicle with an internal combustion engine and provided with an exhaust noise transmission device
DE102017222144A1 (de) 2017-12-07 2019-06-13 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung und Verfahren zum Erzeugen eines Geräusches bei einem Kraftfahrzeug, sowie Kraftfahrzeug
US20230039045A1 (en) * 2021-08-03 2023-02-09 Mclaren Automotive Limited Sound bypass

Also Published As

Publication number Publication date
EP1138887B1 (fr) 2003-10-01
DE50100695D1 (de) 2003-11-06
EP1138887A3 (fr) 2002-06-19
DE10015697C1 (de) 2001-12-20

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