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WO2003100764A1 - Device for modulating noise in a motor vehicle - Google Patents

Device for modulating noise in a motor vehicle Download PDF

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Publication number
WO2003100764A1
WO2003100764A1 PCT/EP2003/003479 EP0303479W WO03100764A1 WO 2003100764 A1 WO2003100764 A1 WO 2003100764A1 EP 0303479 W EP0303479 W EP 0303479W WO 03100764 A1 WO03100764 A1 WO 03100764A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
motor vehicle
interior
line
noise
Prior art date
Application number
PCT/EP2003/003479
Other languages
German (de)
French (fr)
Inventor
Marcus Hofmann
Roudolf Starobinski
Original Assignee
Daimlerchrysler 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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Priority to EP03720415A priority Critical patent/EP1508137A1/en
Priority to JP2004508331A priority patent/JP2005527862A/en
Publication of WO2003100764A1 publication Critical patent/WO2003100764A1/en
Priority to US10/998,359 priority patent/US20050133300A1/en

Links

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

Definitions

  • the invention relates to a device for noise design in a motor vehicle according to the kind defined in the preamble of claim 1.
  • a generic device is known from DE 44 35 296 AI. Such devices are intended to provide the driver of the motor vehicle, particularly when accelerating, with increased transmission of the noises generated by the internal combustion engine, on the one hand to enable a more intensive driving experience and on the other hand to pass on more information about the load state of the internal combustion engine.
  • the output line according to the invention By branching the output line according to the invention with the at least two branch lines extending therefrom, it is possible to direct the noises generated or amplified within the hollow body of the device to different locations in or on the motor vehicle. This results in a wide variety of options for changing the generation of noise for the occupants of the motor vehicle, for example depending on the type of vehicle or also at the request of the buyer.
  • noise or signal amplification is achieved in that the branch lines lead to different locations, which also leads to a spatial sound.
  • the single figure shows a schematic representation of the device for noise design according to the invention.
  • a device 4 for designing the noise of the internal combustion engine 2 is attached via an input line 3, the basic structure and mode of operation of which are described, for example, in DE 100 42 012 AI can be known.
  • the device 4, like the gas-carrying line 1, the internal combustion engine 2 and the input line 3, is not shown in its entirety in a set motor vehicle and is able to influence both the noise in an interior 5 of the motor vehicle and in the vicinity thereof.
  • the device 4 has a hollow body 6, which is divided into two rooms, namely an input room 8 and an output room 9, by a sound transmission device designed in the present case as an oscillatable, gas-tight membrane 7.
  • the input space 8 is connected to the input line 3, whereas the output space 9 is connected to an output line 10.
  • the noises caused by pressure surges or pressure differences in the gas-carrying line 1 are introduced via the input line 3 into the input space 8 of the hollow body 6, as a result of which the membrane 7 is acted upon and excited to vibrate.
  • the membrane 7 vibrates at a natural frequency which is typical of it and which is passed on to the output line 10 by the air in the output space 9.
  • the membrane 7 consists of a gas-tight material in order to prevent gases from flowing over from the gas-carrying line 1 into the outlet line 10.
  • the output line 10 has a branch 11, from which in the present case two branch lines 12 and 13 continue to the interior 5 of the motor vehicle.
  • the two locations at which the branch lines 12 and 13 open into the interior 5 can be, for example, the driver's footwell and the front passenger's footwell. It is ensured that the driver and the passenger experience the same sound impression.
  • a spatial noise is generated in the interior 5 of the motor vehicle, which depends on the driving noise or the operating noise of the internal combustion engine 2 and thus provides the driver of the motor vehicle with acoustic information about the load state of the internal combustion engine 2 and at the same time conveys a spatial sense of sound.
  • a larger number of branch lines to branch off from the branch 11 and / or for a larger number of branches 11 to be provided in the output line 10.
  • the two branch lines 12 and 13 are of different lengths, which leads to interference in the two branch lines 12 and 13, as a result of which different interference patterns arise and individual frequencies of the noise transmitted through the output line 10 are reduced and others are amplified.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Exhaust Silencers (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

Disclosed is a device for modulating noise in a motor vehicle, comprising a hollow body which is separated into at least two chambers by means of at least one sound-transmitting device. One chamber is connected to a gas-containing part of an internal combustion engine that is disposed in the vehicle via an intake pipe while the other chamber is acoustically coupled to an interior space of the vehicle and/or the space surrounding the vehicle by means of a discharge pipe. Said discharge pipe comprises at least one bifurcation from which at least two branch pipes run to different locations in the interior space and/or the space surrounding the vehicle.

Description

Vorrichtung zur Geräuschgestaltung bei einem Kraftfahrzeug Device for designing noise in a motor vehicle
Die Erfindung betrifft eine Vorrichtung zur Geräuschgestaltung bei einem Kraftfahrzeug nach der im Oberbegriff von Anspruch 1 näher definierten Art.The invention relates to a device for noise design in a motor vehicle according to the kind defined in the preamble of claim 1.
Eine gattungsgemäße Vorrichtung ist aus der DE 44 35 296 AI bekannt. Mit solchen Vorrichtungen sollen dem Fahrer des Kraftfahrzeugs insbesondere beim Beschleunigen die von der Brennkraftmaschine erzeugten Geräusche verstärkt übermittelt werden, um zum einen ein intensiveres Pahrerlebnis zu ermöglichen und zum anderen mehr Informationen über den Lastzustand der Brennkraftmaschine weiterzugeben.A generic device is known from DE 44 35 296 AI. Such devices are intended to provide the driver of the motor vehicle, particularly when accelerating, with increased transmission of the noises generated by the internal combustion engine, on the one hand to enable a more intensive driving experience and on the other hand to pass on more information about the load state of the internal combustion engine.
Die Nachteile dieser bekannten Vorrichtung liegen jedoch in ihrem verhältnismäßig geringen Wirkungsgrad sowie dem sehr starren Übertragungsverhalten.However, the disadvantages of this known device are its relatively low efficiency and the very rigid transmission behavior.
In der DE 100 42 012 AI wurde versucht, diesen Wirkungsgrad der gesamten Vorrichtung zu verbessern. Allerdings wird auch dort noch keine optimale Lösung angeboten, insbesondere im Hinblick auf ein flexibleres Übertragungsverhalten.DE 100 42 012 AI tried to improve this efficiency of the entire device. However, an optimal solution is not yet offered there either, particularly with regard to more flexible transmission behavior.
Es ist daher Aufgabe der vorliegenden Erfindung, eine Vorrichtung zur Geräuschgestaltung bei einem Kra tfahrzeug zu schaffen, bei welcher die von der Brennkraftmaschine erzeugten Geräusche mit einfachen Mitteln übertragen werden können, wobei insgesamt eine Verbesserung des Übertragungsverhaltens erreicht werden soll . Erfindungsgemäß wird diese Aufgabe durch die in Anspruch 1 genannten Merkmale gelöst .It is therefore an object of the present invention to provide a device for designing noise in a vehicle, in which the noise generated by the internal combustion engine can be transmitted with simple means, with an overall improvement in the transmission behavior to be achieved. According to the invention, this object is achieved by the features mentioned in claim 1.
Durch die erfindungsgemäße Verzweigung der Ausgangsleitung mit den wenigstens zwei davon ausgehenden Zweigleitungen ist es möglich, die innerhalb des Hohlkörpers der Vorrichtung erzeugten bzw. verstärkten Geräusche an verschiedene Stellen im oder am Kraftfahrzeug zu leiten. Dadurch ergeben sich verschiedenste Möglichkeiten, die Geräuscherzeugung für die Insassen des Kraftfahrzeugs zu verändern, beispielsweise in Abhängigkeit vom Fahrzeugtyp oder auch auf Wunsch des Käufers .By branching the output line according to the invention with the at least two branch lines extending therefrom, it is possible to direct the noises generated or amplified within the hollow body of the device to different locations in or on the motor vehicle. This results in a wide variety of options for changing the generation of noise for the occupants of the motor vehicle, for example depending on the type of vehicle or also at the request of the buyer.
Eine Geräusch- bzw. Signalverstärkung wird erfindungsgemäß dadurch erreicht, daß die Zweigleitungen zu verschiedenen Stellen führen, was außerdem auch zu einem räumlichen Klang führt .According to the invention, noise or signal amplification is achieved in that the branch lines lead to different locations, which also leads to a spatial sound.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen sowie aus dem nachfolgend anhand der Zeichnung prinzipmäßig dargestellten Aus- führungsbeispiel .Advantageous refinements and developments of the invention result from the subclaims and from the exemplary embodiment shown in principle below with reference to the drawing.
Die einzige Figur zeigt eine schematische Darstellung der erfindungsgemäßen Vorrichtung zur Geräuschgestaltung.The single figure shows a schematic representation of the device for noise design according to the invention.
An einer gasführenden Leitung 1 einer lediglich schematisch dargestellten Brennkraftmaschine 2, also z.B. an einer Ansaugleitung oder einer Abgasleitung, ist über eine Eingangsleitung 3 eine Vorrichtung 4 zur Gestaltung des Geräuschs der Brennkraftmaschine 2 angebracht, deren prinzipieller Aufbau und Wirkungsweise beispielsweise aus der DE 100 42 012 AI bekannt sein können. Die Vorrichtung 4 befindet sich, wie auch die gasführende Leitung 1, die Brennkraftmaschine 2 und die Eingangsleitung 3, in einem in seiner Gesamtheit nicht darge- stellten Kraftfahrzeug und ist in der Lage, sowohl das Geräusch in einem Innenraum 5 des Kraftfahrzeugs als auch in der Umgebung desselben zu beeinflussen.On a gas-carrying line 1 of an internal combustion engine 2, which is only shown schematically, for example on an intake line or an exhaust gas line, a device 4 for designing the noise of the internal combustion engine 2 is attached via an input line 3, the basic structure and mode of operation of which are described, for example, in DE 100 42 012 AI can be known. The device 4, like the gas-carrying line 1, the internal combustion engine 2 and the input line 3, is not shown in its entirety in a set motor vehicle and is able to influence both the noise in an interior 5 of the motor vehicle and in the vicinity thereof.
Hierzu weist die Vorrichtung 4 einen Hohlkörper 6 auf, der durch eine im vorliegenden Fall als schwingfähige, gasdichte Membran 7 ausgebildete Schallübertragungseinrichtung in zwei Räume, nämlich einen Eingangsraum 8 und einen Ausgangsraum 9 geteilt ist. Der Eingangsraum 8 ist dabei mit der Eingangsleitung 3 verbunden, wohingegen der Ausgangsraum 9 mit einer Ausgangsleitung 10 verbunden ist. Die in der gasführenden Leitung 1 durch Druckstöße oder Druckunterschiede hervorgerufenen Geräusche werden über die Eingangsleitung 3 in den Eingangsraum 8 des Hohlkörpers 6 eingeleitet, wodurch die Membran 7 beaufschlagt und zum Schwingen angeregt wird. Bei dieser Beaufschlagung schwingt die Membran 7 mit einer für sie typischen Eigenfrequenz, welche durch die in dem Ausgangsraum 9 sich befindliche Luft in die Ausgangsleitung 10 weitergegeben wird. Die Membran 7 besteht, wie bereits erwähnt, aus einem gasdichten Werkstoff, um ein Überströmen von Gasen aus der gasführenden Leitung 1 in die Ausgangsleitung 10 zu verhindern.For this purpose, the device 4 has a hollow body 6, which is divided into two rooms, namely an input room 8 and an output room 9, by a sound transmission device designed in the present case as an oscillatable, gas-tight membrane 7. The input space 8 is connected to the input line 3, whereas the output space 9 is connected to an output line 10. The noises caused by pressure surges or pressure differences in the gas-carrying line 1 are introduced via the input line 3 into the input space 8 of the hollow body 6, as a result of which the membrane 7 is acted upon and excited to vibrate. When this is applied, the membrane 7 vibrates at a natural frequency which is typical of it and which is passed on to the output line 10 by the air in the output space 9. As already mentioned, the membrane 7 consists of a gas-tight material in order to prevent gases from flowing over from the gas-carrying line 1 into the outlet line 10.
Die Ausgangsleitung 10 weist eine Verzweigung 11 auf, von welcher sich im vorliegenden Fall zwei Zweigleitungen 12 und 13 zu dem Innenraum 5 des Kraftfahrzeugs fortsetzen. Dadurch ist es möglich, die beschriebenen Schwingungen der Schallubertragungseinrichtung bzw. Membran 7 an mehrere Stellen im Innenraum 5 des Kraftfahrzeugs zu leiten, wobei die beiden Zweigleitungen 12 und 13 in nicht dargestellter Weise auch zu einem das Fahrzeug umgebenden Raum geführt werden könnten. Bei den beiden Stellen, an denen die Zweigleitungen 12 und 13 in den Innenraum 5 münden, kann es sich beispielsweise um den Fahrerfußraum und den Beifahrerfußraum handeln, wodurch si- chergestellt ist, daß der Fahrer und der Beifahrer denselben Klangeindruck empfinden.The output line 10 has a branch 11, from which in the present case two branch lines 12 and 13 continue to the interior 5 of the motor vehicle. This makes it possible to conduct the described vibrations of the sound transmission device or membrane 7 to a plurality of locations in the interior 5 of the motor vehicle, the two branch lines 12 and 13 also being able to be routed to a space surrounding the vehicle in a manner not shown. The two locations at which the branch lines 12 and 13 open into the interior 5 can be, for example, the driver's footwell and the front passenger's footwell. It is ensured that the driver and the passenger experience the same sound impression.
Auf diese Weise wird im Innenraum 5 des Kraftfahrzeugs ein räumliches Geräusch erzeugt, welches vom Fahrgeräusch bzw. vom Betriebsgeräusch der Brennkraftmaschine 2 abhängt und so dem Fahrer des Kraftfahrzeugs akustische Informationen über den Lastzustand der Brennkraftmaschine 2 gibt und gleichzeitig ein räumliches Klangempfinden vermittelt. In diesem Zusammenhang ist es auch möglich, daß von der Verzweigung 11 eine größere Anzahl an Zweigleitungen abzweigt und/oder daß eine größere Anzahl an Verzweigungen 11 in der Ausgangsleitung 10 vorgesehen ist.In this way, a spatial noise is generated in the interior 5 of the motor vehicle, which depends on the driving noise or the operating noise of the internal combustion engine 2 and thus provides the driver of the motor vehicle with acoustic information about the load state of the internal combustion engine 2 and at the same time conveys a spatial sense of sound. In this context, it is also possible for a larger number of branch lines to branch off from the branch 11 and / or for a larger number of branches 11 to be provided in the output line 10.
Am Ausgang der beiden Zweigleitungen 12 und 13, also im vorliegenden Fall am Übergang derselben in den Innenraum 5, befinden sich jeweils Absorptionsmaterialien 14 und 15, die eine Änderung des Klangmusters durch Hinzufügen eines akustischen Widerstandes erzeugen.At the output of the two branch lines 12 and 13, that is to say in the present case at the transition thereof into the interior 5, there are absorption materials 14 and 15, respectively, which produce a change in the sound pattern by adding an acoustic resistance.
Des weiteren sind im dargestellten Ausführungsbeispiel die beiden Zweigleitungen 12 und 13 unterschiedlich lang, was zu Interferenzen in den beiden Zweigleitungen 12 und 13 führt, wodurch verschiedene Interferenzmuster entstehen und einzelne Frequenzen der durch die Ausgangsleitung 10 übertragenen Geräusche verringert und andere verstärkt werden. Furthermore, in the exemplary embodiment shown, the two branch lines 12 and 13 are of different lengths, which leads to interference in the two branch lines 12 and 13, as a result of which different interference patterns arise and individual frequencies of the noise transmitted through the output line 10 are reduced and others are amplified.

Claims

Patentansprüche claims
1. Vorrichtung zur Geräuschgestaltung bei einem Kraftfahrzeug mit einem Hohlkörper, welcher durch wenigstens eine Schallübertragungseinrichtung in wenigstens zwei Räume geteilt ist, wobei ein Raum über eine Eingangsleitung mit einem gasführenden Teil einer in dem Fahrzeug angeordneten Brennkraftmaschine in Verbindung steht, und wobei der andere Raum mittels einer Ausgangsleitung an einem Innenraum des Fahrzeugs und/oder an den das Fahrzeug umgebenden Raum akustisch gekoppelt ist, dadurch gekennze i chnet , daß die Ausgangsleitung (10) wenigstens eine Verzweigung (11) aufweist, von welcher aus wenigstens zwei Zweigleitungen (12,13) zu unterschiedlichen Stellen in dem Innenraum (5) und/oder dem das Fahrzeug umgebenden Raum verlaufen.1. Device for noise design in a motor vehicle with a hollow body which is divided into at least two rooms by at least one sound transmission device, one room being connected via an input line to a gas-carrying part of an internal combustion engine arranged in the vehicle, and the other room being connected an output line is acoustically coupled to an interior of the vehicle and / or to the space surrounding the vehicle, characterized in that the output line (10) has at least one branch (11) from which at least two branch lines (12, 13) run to different locations in the interior (5) and / or the space surrounding the vehicle.
2. Vorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß am Übergang wenigstens einer Zweigleitung (12,13) in den Innenraum (5) des Fahrzeugs und/oder den das Fahrzeug umgebenden Raum ein Absorptionsmaterial (14,15) angeordnet ist .2. Device according to claim 1, so that an absorption material (14, 15) is arranged at the transition of at least one branch line (12, 13) into the interior (5) of the vehicle and / or the space surrounding the vehicle.
3. Vorrichtung nach Anspruch 1 oder 2 , d a d u r c h g e k e n n z e i c h n e t , daß die Zweigleitungen (12,13) derart unterschiedliche Längen aufweisen, daß durch eine sich dadurch ergebende Interferenz einzelne Frequenzen der durch die Ausgangsleitung (10) übertragenen Geräusche verringert und andere verstärkt werden. Vorrichtung nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet , daß zwei Zweigleitungen (12,13) vorgesehen sind, von denen eine zu einem Fahrerfußraum und die andere zu einem Beifahrerfußraum führt . 3. Apparatus according to claim 1 or 2, characterized in that the branch lines (12,13) have such different lengths that individual frequencies of the noises transmitted through the output line (10) are reduced and others are amplified by a resultant interference. Apparatus according to claim 1, 2 or 3, characterized in that two branch lines (12, 13) are provided, one of which leads to a driver's footwell and the other to a passenger's footwell.
PCT/EP2003/003479 2002-05-29 2003-04-03 Device for modulating noise in a motor vehicle WO2003100764A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03720415A EP1508137A1 (en) 2002-05-29 2003-04-03 Device for modulating noise in a motor vehicle
JP2004508331A JP2005527862A (en) 2002-05-29 2003-04-03 Device for correcting sounds in automobiles
US10/998,359 US20050133300A1 (en) 2002-05-29 2004-11-27 Device for establishing noise in a motor vehicle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10223871.5 2002-05-29
DE2002123871 DE10223871A1 (en) 2002-05-29 2002-05-29 Device for noise shaping in a motor vehicle

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/998,359 Continuation-In-Part US20050133300A1 (en) 2002-05-29 2004-11-27 Device for establishing noise in a motor vehicle

Publications (1)

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WO2003100764A1 true WO2003100764A1 (en) 2003-12-04

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PCT/EP2003/003479 WO2003100764A1 (en) 2002-05-29 2003-04-03 Device for modulating noise in a motor vehicle

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EP (1) EP1508137A1 (en)
JP (1) JP2005527862A (en)
DE (1) DE10223871A1 (en)
WO (1) WO2003100764A1 (en)

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JP2006273105A (en) * 2005-03-29 2006-10-12 Fuji Heavy Ind Ltd Engine sound introduction structure of vehicle
JP2006273106A (en) * 2005-03-29 2006-10-12 Fuji Heavy Ind Ltd Engine sound introduction structure of vehicle
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
CN103625361A (en) * 2012-08-24 2014-03-12 F·波尔希名誉工学博士公司 Method and device for generating noise in the vehicle interior and vehicle exterior of a motor vehicle

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US6932189B2 (en) * 2001-09-24 2005-08-23 Daimlerchrysler Ag Device for noise structuring in a motor vehicle
DE102015111054A1 (en) * 2015-07-08 2017-01-12 Dr. Ing. H.C. F. Porsche Aktiengesellschaft A noise transmission system for a motor vehicle and method for a noise transmission system

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DE10042012A1 (en) * 1999-11-22 2001-05-23 Daimler Chrysler Ag Appliance for simulating sound characteristic of engine load in car interior uses vibrating membrane to convert exhaust gas pulsations into sound waves
DE10016104A1 (en) * 2000-03-31 2001-10-04 Audi Ag Sound generation device for automobile passenger compartment has signal sources providing engine operating noise coupled to sound conduction system via sound chambers
DE10114397A1 (en) * 2001-03-23 2002-09-26 Mahle Filtersysteme Gmbh Sound transmission device for motor vehicle has several resonator chambers working in parallel, of which at least two are different from each other in terms of their frequency tuning

Cited By (10)

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Publication number Priority date Publication date Assignee Title
JP2006273105A (en) * 2005-03-29 2006-10-12 Fuji Heavy Ind Ltd Engine sound introduction structure of vehicle
JP2006273106A (en) * 2005-03-29 2006-10-12 Fuji Heavy Ind Ltd Engine sound introduction structure of vehicle
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CN103625361A (en) * 2012-08-24 2014-03-12 F·波尔希名誉工学博士公司 Method and device for generating noise in the vehicle interior and vehicle exterior of a motor vehicle
DE102012107814A1 (en) 2012-08-24 2014-05-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method and device for generating noise in the interior and exterior of a motor vehicle
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CN103625361B (en) * 2012-08-24 2016-01-20 F·波尔希名誉工学博士公司 At the vehicle interior of power actuated vehicle and the method and apparatus of outside vehicle generation noise
DE102012107814B4 (en) 2012-08-24 2024-09-12 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method and device for generating noise in the interior and exterior of a motor vehicle

Also Published As

Publication number Publication date
DE10223871A1 (en) 2003-12-11
EP1508137A1 (en) 2005-02-23
JP2005527862A (en) 2005-09-15

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