EP1371056B2 - Sound transmission device for a motor vehicle - Google Patents

Sound transmission device for a motor vehicle Download PDF

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Publication number
EP1371056B2
EP1371056B2 EP02724120A EP02724120A EP1371056B2 EP 1371056 B2 EP1371056 B2 EP 1371056B2 EP 02724120 A EP02724120 A EP 02724120A EP 02724120 A EP02724120 A EP 02724120A EP 1371056 B2 EP1371056 B2 EP 1371056B2
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EP
European Patent Office
Prior art keywords
resonator
transmission line
chambers
resonator chambers
sound
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
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EP02724120A
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German (de)
French (fr)
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EP1371056A1 (en
EP1371056B1 (en
Inventor
Reinhard Hoffmann
Kay Brodesser
Udo Lindner
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.)
Bayerische Motoren Werke AG
Mahle Filtersysteme GmbH
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Bayerische Motoren Werke AG
Mahle Filtersysteme GmbH
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Application filed by Bayerische Motoren Werke AG, Mahle Filtersysteme GmbH filed Critical Bayerische Motoren Werke AG
Publication of EP1371056A1 publication Critical patent/EP1371056A1/en
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    • 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 targeted sound transmission from an intake tract of an internal combustion engine of a motor vehicle, in particular a passenger car, to an interior of the motor vehicle, having the features of the preamble of claim 1.
  • Such a sound transmission device is for example from the DE 199 22 216 A1 known and has a hollow transmission line, which is connected on the input side communicating with the intake tract of the internal combustion engine and to which a resonator chamber is connected.
  • This resonator chamber is tuned to a specific frequency or to a specific frequency band and is thereby aligned so that it emits a sound supplied via the transmission line to the vehicle interior.
  • the present invention is concerned with the problem of specifying an embodiment for a sound transmission device of the type mentioned, in which the possibility for the targeted generation of a desired sound effect or sound in the vehicle interior is improved.
  • a plurality of parallel-acting resonator chambers are provided, of which at least two differ from each other in terms of their frequency tuning.
  • the invention uses the knowledge that the sound transmission system of the device according to the invention operates with resonances, wherein resonance effects usually occur only in relatively narrow frequency ranges.
  • a plurality of different resonance frequencies can thus be utilized in order to generate the desired noise effect.
  • different frequencies of the sound generated by the internal combustion engine can be purposefully intensified in order to produce the desired sound impression in the vehicle interior.
  • the sound transmission paths from the intake tract to the individual resonator chambers can be formed as ⁇ / 2 resonators or have a section designed as a ⁇ / 2 resonator, with at least two differing from the ⁇ / 2 resonators with respect to their frequency tuning.
  • each resonator chamber is preceded by a ⁇ / 2 resonator, which allows additional frequency amplification to be achieved.
  • each resonator chamber may be associated with a membrane, which is excited to vibrate by the supplied sound.
  • at least one of the membranes in the associated resonator chamber separates an input-side first space from an output-side second space.
  • the first space forms a so-called "Helmholtz resonator" whose characteristics can be influenced by the volume of the second space.
  • At least two of the membranes may differ from one another with regard to their frequency tuning. Accordingly, there are many possibilities for frequency tuning of the individual resonator chambers.
  • switching means may be provided with which the individual resonator chambers can be activated and deactivated.
  • the individual resonator chambers can thereby be activated in succession, so that only one resonator chamber is always activated, while all the others are deactivated. It is also possible to activate several, in particular all, resonator chambers. Different combinations can be switched to generate different sound effects.
  • the switching means for activating or deactivating the individual resonator chambers are preferably actuated in such an internal combustion engine as a function of the respective switching state of the switching suction system. In this way, changes in the sound radiation characteristic of the internal combustion engine can be compensated and / or influenced when the shift intake system is switched such that a desired listening impression is produced in the vehicle interior in each switching state of the shift intake system.
  • an air intake tract 1 of an internal combustion engine 2 has an air filter 3 in which a filter element 4 separates a raw side 5 from a clean side 6.
  • a sound field is formed during the operation of the internal combustion engine 2, whose sound or noise characteristic correlates with a power provided by the internal combustion engine 2, in particular with its rotational speed.
  • the motor vehicle not shown otherwise, which is in particular a passenger car, preferably a sports car, has a in the FIGS. 2 and 3 illustrated sound transmission device 10th
  • an input side 11 of this sound transmission device 10 is preferably connected to the connecting line 7 of the intake tract 1.
  • the input side 11 ' is connected to the clean side 6 of the air filter 3.
  • the input side 11 '" may be connected to the raw side 5 of the air filter 3.
  • the input side 11 '''' upstream of the air filter 3 to connect to the raw side of the intake manifold 1.
  • Corresponding Fig. 2 has the sound transmission device 10 according to the invention, for example, three hollow transmission lines 12, which are connected here relatively close to each other to the connecting line 7. It is also possible that the various transmission lines 12 are connected at different points to the intake tract 1. For this purpose, reference is made to the connection possibilities of the input side 11 to 11 "", listed above by way of example.
  • Each transmission line 12 leads to a resonator chamber 13.
  • Each resonator chamber 13 is separated on the input side via a membrane 14 from the associated transmission line 12 in a gastight manner and connected on the output side to an outlet tube 15.
  • all outlet pipes 15 are connected to a common collector 16, which has a common sound outlet pipe 17 for all resonator chambers 13, which is here equipped with a funnel-shaped outlet 18.
  • This outlet 18 is positioned frontally in front of a partition wall 19, the so-called “bulkhead", which separates an engine compartment 20 from a vehicle interior 21. Accordingly, the sound transmission takes place through this partition 19 therethrough.
  • the individual sound transmission systems are preferably tuned with respect to different frequencies so as to realize a desired broadband effect for the sound transmission device 10. At least two of the resonator chambers 13 are accordingly designed differently with regard to their frequency tuning. For example, they differ in their volume.
  • the individual membranes 14 may be designed differently with respect to their frequency tuning each other. For example, the individual membranes can differ from each other in terms of their diameter. Likewise, different materials, different thicknesses and mass assignments can be selected.
  • the individual transmission lines 12 may differ from each other, for example with respect to their diameter and / or in terms of their length.
  • At least one of the transmission lines 12 is formed as a so-called " ⁇ / 2 resonator". If a plurality of transmission lines 12 are formed as ⁇ / 2 resonators, they may be formed with respect to different resonance frequencies.
  • Fig. 2 shows a preferred embodiment in which the sound transmission device 10 according to the invention comprises switching means 22 with which the individual sound transmission systems or the individual resonator chambers 13 can be activated and deactivated.
  • the switching means 22 in this case have in each transmission line 12 a flap 23 which is pivotally adjustable in each case by way of example about a pivot axis 24 extending perpendicular to the plane of the drawing.
  • actuators 25 are provided, each driving one of the flaps 23 for adjustment.
  • the individual actuators 25 are connected via corresponding control lines 26 with a controller 27 which actuates the individual actuators 25 in response to predetermined parameters.
  • each resonator chamber 13 is connected via a separate connecting line 28 to a common transmission line 29, which in turn is connected with its input side 11 to the intake tract 1, here to the air line 7.
  • the individual connection lines 28 may be connected to the common transmission line 29 at different locations 30 and 31. It is also possible for all connecting lines 28 to branch off from the common transmission line 29 at about the same point.
  • connection lines 28 may differ from one another, preferably with regard to their diameter and / or their length.
  • the connection lines 28 may also be formed as ⁇ / 2 resonator.
  • connection lines 28 or the resonator chambers 13 coupled thereto are designed to be switchable, that is, switching means 22 with flap 23 and actuator 25 are provided.
  • the flaps 23 can be pivoted to the cross section of the transmission line 12 (in the example according to FIG Fig. 2 ) or the connecting line 28 (in the example according to Fig. 3 ) to activate the respective resonator chamber 13 to open and close to deactivate the respective resonator 13. Accordingly, in Fig. 2 the upper and the middle resonator chamber 13 is activated while the lower resonator chamber 13 is deactivated. In contrast, in the embodiment according to Fig. 3 the upper and lower resonator chambers 13 are activated while the central resonator chamber 13 is deactivated.
  • resonator chambers 13 are different from those of Fig. 2 by the arrangement of the membranes 14.
  • the membranes are arranged within the resonator chambers 13, that the membrane 14 there separates an input-side first space 32 from an output-side second space 33.
  • the respective first space 32 forms a so-called "Helmholtz resonator".
  • the individual resonator chambers 13 may be configured differently with respect to their frequency tuning, wherein the individual sound transmission systems with respect to the configuration of the connecting lines 28, and the volumes of the resonator chambers 13 may differ from each other.
  • the membranes 14 may be formed differently.
  • Different frequency responses may also result from variations in the size of the first space 32 and / or the second space 33.
  • a damping body 34 may be used, for example, in the second chamber 33, which is formed for example of an open-cell foam. It is also possible to accommodate such a damping material in the respective outlet tube 15 or in the first space 32 or in the connecting line 28. By way of example, this damping body 34 is in Fig. 3 only used in the lower sound transmission system. Likewise, such or another damping material can also be arranged in the other sound transmission systems.
  • a diaphragm 35 is arranged in the sound outlet tube 17 of the upper sound transmission system whose diaphragm cross-section is smaller than the tube cross-section of the outlet tube 15.
  • each outlet pipe 15 has its own sound outlet 18; these are each positioned near the partition 19. Again, it is possible to arrange the sound exits 18 in or beyond the partition 19.
  • the sound transmission device 10 is designed to amplify different frequencies or frequency bands, there are relatively diverse design options for the generation and modulation of a desired engine sound in the vehicle interior 21.
  • the controller 27 can Actuate switching means 22, for example, depending on the current operating state of the internal combustion engine 2. It is possible to activate or deactivate the resonator chambers 13 individually. In particular, two or more resonator chambers can be activated in parallel. Likewise, all resonator chambers can be activated or deactivated. It is basically possible to design two of several sound transmission systems with respect to the same frequency, wherein in a first operating point only one of these sound transmission systems is active, while in a second operating point both sound transmission systems are activated in parallel in order to reinforce the assigned frequency again.
  • connection lines 28 of the upper and lower sound transmission system are connected to the common transmission line 29 so that they open substantially perpendicularly in this.
  • the connecting line 28 of the central sound transmission system is a coaxial extension of the common transmission line 29. In principle, however, other, in particular any, connection angle are possible.
  • connection lines 28 of the upper and lower sound transmission system can each be formed as a ⁇ / 2 resonator. Due to the aligned arrangement of the connection line 28 of the middle sound transmission system, this connection line 28 together with the common transmission line 29 also form a ⁇ / 2 resonator.
  • the collector 16 may be equipped with a plurality of, here two, common outlet pipes 17 'and 17 ", which differ in terms of their dimensions from one another.
  • Fig. 5 can in accordance with a development of the device 10 Fig. 3 at least one of the resonator chambers 13 with a plurality, here three, outlet tubes 15 ', 15''and15''' be equipped, which differ from each other in terms of their dimensions.
  • the characteristic of the radiated sound can be influenced within a resonator 13.

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  • 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)
  • Characterised By The Charging Evacuation (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur gezielten Schallübertragung von einem Ansaugtrakt einer Brennkraftmaschine eines Kraftfahrzeugs, insbesondere eines Personenkraftwagens, zu einem Innenraum des Kraftfahrzeugs, mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a device for targeted sound transmission from an intake tract of an internal combustion engine of a motor vehicle, in particular a passenger car, to an interior of the motor vehicle, having the features of the preamble of claim 1.

Eine derartige Schallübertragungsvorrichtung ist beispielsweise aus der DE 199 22 216 A1 bekannt und weist eine hohle Übertragungsleitung auf, die eingangsseitig mit dem Ansaugtrakt der Brennkraftmaschine kommunizierend verbunden ist und an die eine Resonatorkammer angeschlossen ist. Diese Resonatorkammer ist auf eine bestimmte Frequenz oder auf ein bestimmtes Frequenzband abgestimmt und ist dabei so ausgerichtet, dass sie einen über die Übertragungsleitung zugeführten Schall zum Fahrzeuginnenraum abstrahlt.Such a sound transmission device is for example from the DE 199 22 216 A1 known and has a hollow transmission line, which is connected on the input side communicating with the intake tract of the internal combustion engine and to which a resonator chamber is connected. This resonator chamber is tuned to a specific frequency or to a specific frequency band and is thereby aligned so that it emits a sound supplied via the transmission line to the vehicle interior.

Es hat sich gezeigt, dass sich mit Hilfe der bekannten Schallübertragungsvorrichtung bei bestimmten Brennkraftmaschinen bzw. bei bestimmten Fahrzeugen nur ein unzureichender Geräuscheffekt bzw. Sound im Fahrzeuginnenraum erzielen lässt. Die Möglichkeiten zur gezielten Generierung eines gewünschten Sounds im Fahrzeuginnenraum sind bei der bekannten Schallübertragungsvorrichtung relativ eingeschränkt.It has been shown that with the help of the known sound transmission device with certain internal combustion engines or with certain vehicles only an insufficient noise effect or sound in the vehicle interior can be achieved. The possibilities for the targeted generation of a desired sound in the vehicle interior are relatively limited in the known sound transmission device.

Die vorliegende Erfindung beschäftigt sich mit dem Problem, für eine Schallübertragungsvorrichtung der eingangs genannten Art eine Ausführungsform anzugeben, bei der die Möglichkeit zur gezielten Generierung eines gewünschten Geräuscheffekts oder Sounds im Fahrzeuginnenraum verbessert ist.The present invention is concerned with the problem of specifying an embodiment for a sound transmission device of the type mentioned, in which the possibility for the targeted generation of a desired sound effect or sound in the vehicle interior is improved.

Dieses Problem wird erfindungsgemäß dadurch gelöst, dass mehrere, parallel wirkende Resonatorkammern vorgesehen sind, von denen sich mindestens zwei hinsichtlich ihrer Frequenzabstimmung voneinander unterscheiden. Die Erfindung nutzt dabei die Erkenntnis, dass das Schallübertragungssystem der erfindungsgemäßen Vorrichtung mit Resonanzen arbeitet, wobei Resonanzeffekte üblicherweise nur in relativ engen Frequenzbereichen auftreten. Durch die Schaffung mehrerer Resonatorkammern können somit mehrere, verschiedene Resonanzfrequenzen ausgenutzt werden, um den gewünschten Geräuscheffekt zu generieren. Durch mehrere, unterschiedliche Resonatorkammern, können verschiedene Frequenzen des von der Brennkraftmaschine erzeugten Schalls gezielt verstärkt werden, um im Fahrzeuginnenraum den gewünschten Geräuscheindruck herzustellen.This problem is inventively solved in that a plurality of parallel-acting resonator chambers are provided, of which at least two differ from each other in terms of their frequency tuning. The invention uses the knowledge that the sound transmission system of the device according to the invention operates with resonances, wherein resonance effects usually occur only in relatively narrow frequency ranges. By creating a plurality of resonator chambers, a plurality of different resonance frequencies can thus be utilized in order to generate the desired noise effect. By means of a plurality of different resonator chambers, different frequencies of the sound generated by the internal combustion engine can be purposefully intensified in order to produce the desired sound impression in the vehicle interior.

Bei einer Weiterbildung können die Schallübertragungsstrekken vom Ansaugtrakt zu den einzelnen Resonatorkammern als λ/2-Resonatoren ausgebildet sein oder einen als λ/2-Resonator ausgebildeten Abschnitt aufweisen, wobei sich von den λ/2-Resonatoren zumindest zwei hinsichtlich ihrer Frequenzabstimmung voneinander unterscheiden. Durch diese Maßnahmen wird jeder Resonatorkammer ein λ/2-Resonator vorgeschaltet, wodurch sich eine zusätzliche Frequenzverstärkung erzielen lässt. Durch unterschiedliche Längen der Schallübertragungsstrecken können dabei verschiedene Resonanzfrequenzen eingestellt werden.In one development, the sound transmission paths from the intake tract to the individual resonator chambers can be formed as λ / 2 resonators or have a section designed as a λ / 2 resonator, with at least two differing from the λ / 2 resonators with respect to their frequency tuning. As a result of these measures, each resonator chamber is preceded by a λ / 2 resonator, which allows additional frequency amplification to be achieved. By different lengths of the sound transmission paths while different resonance frequencies can be adjusted.

Bei einer anderen Weiterbildung kann jeder Resonatorkammer eine Membran zugeordnet sein, die durch den zugeführten Schall zu Schwingungen angeregt wird. Zweckmäßig trennt mindestens eine der Membranen in der zugehörigen Resonatorkammer einen eingangsseitigen ersten Raum von einem ausgangsseitigen zweiten Raum. Der erste Raum bildet dabei einen sogenannten "Helmholtz-Resonator", dessen Charakteristik durch das Volumen des zweiten Raums beeinflussbar ist.In another development, each resonator chamber may be associated with a membrane, which is excited to vibrate by the supplied sound. Expediently, at least one of the membranes in the associated resonator chamber separates an input-side first space from an output-side second space. The first space forms a so-called "Helmholtz resonator" whose characteristics can be influenced by the volume of the second space.

Bei einer vorteilhaften Weiterbildung können sich zumindest zwei der Membranen hinsichtlich ihrer Frequenzabstimmung voneinander unterscheiden. Dementsprechend ergeben sich vielfältige Möglichkeiten zur Frequenzabstimmung der einzelnen Resonatorkammern.In an advantageous development, at least two of the membranes may differ from one another with regard to their frequency tuning. Accordingly, there are many possibilities for frequency tuning of the individual resonator chambers.

Bei einer besonderen Ausführungsform können Schaltmittel vorgesehen sein, mit denen die einzelnen Resonatorkammern aktivierbar und deaktivierbar sind. Durch diese Bauweise ist es möglich, einzelne Resonatorkammern anzuschalten und abzuschalten. Insbesondere können die einzelnen Resonatorkammern dadurch nacheinander aktiviert werden, so dass immer nur eine Resonatorkammer aktiviert ist, während alle anderen deaktiviert sind. Ebenso ist es möglich mehrere, insbesondere alle, Resonatorkammern zu aktivieren. Dabei können verschiedene Kombinationen geschaltet werden, um unterschiedliche Soundeffekte zu generieren.In a particular embodiment, switching means may be provided with which the individual resonator chambers can be activated and deactivated. By this construction, it is possible to turn on and off individual resonator chambers. In particular, the individual resonator chambers can thereby be activated in succession, so that only one resonator chamber is always activated, while all the others are deactivated. It is also possible to activate several, in particular all, resonator chambers. Different combinations can be switched to generate different sound effects.

Von besonderer Bedeutung ist die erfindungsgemäße Schallübertragungsvorrichtung bei einer Brennkraftmaschine, die mit einer Schaltsauganlage ausgestattet ist. Die Schaltmittel zur Aktivierung bzw. Deaktivierung der einzelnen Resonatorkammern werden bei einer solchen Brennkraftmaschine vorzugsweise in Abhängigkeit des jeweiligen Schaltzustands der Schaltsauganlage betätigt. Auf diese Weise können Veränderungen der Schallabstrahlungscharakteristik der Brennkraftmaschine beim Schalten der Schaltsauganlage kompensiert und/oder beeinflusst werden, derart, dass im Fahrzeuginnenraum in jedem Schaltzustand der Schaltsauganlage ein gewünschter Höreindruck entsteht.Of particular importance is the sound transmission device according to the invention in an internal combustion engine which is equipped with a Schaltsauganlage. The switching means for activating or deactivating the individual resonator chambers are preferably actuated in such an internal combustion engine as a function of the respective switching state of the switching suction system. In this way, changes in the sound radiation characteristic of the internal combustion engine can be compensated and / or influenced when the shift intake system is switched such that a desired listening impression is produced in the vehicle interior in each switching state of the shift intake system.

Weitere wichtige Merkmale und Vorteile der erfindungsgemäßen Vorrichtung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the device according to the invention will become apparent from the subclaims, from the drawings and from the associated figure description with reference to the drawings.

Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert.Preferred embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description.

Es zeigen, jeweils schematisch,

Fig. 1
eine Prinzipdarstellung eines Ansaugtraktes einer Brennkraftmaschine,
Fig. 2
eine Prinzipdarstellung einer ersten Ausführungsform einer Schallübertragungsvorrichtung nach der Erfindung,
Fig. 3
eine Prinzipdarstellung einer zweiten Ausführungsform der erfindungsgemäßen Schallübertragungsvorrichtung,
Fig. 4
eine Prinzipdarstellung einer besonderen Ausgestaltung der Ausführungsform gemäß Fig. 2 und
Fig. 5
eine Prinzipdarstellung einer besonderen Ausgestaltung der Ausführungsform gemäß Fig. 3.
Show, in each case schematically,
Fig. 1
a schematic diagram of an intake tract of an internal combustion engine,
Fig. 2
a schematic diagram of a first embodiment of a sound transmission device according to the invention,
Fig. 3
a schematic diagram of a second embodiment of the sound transmission device according to the invention,
Fig. 4
a schematic diagram of a particular embodiment of the embodiment according to Fig. 2 and
Fig. 5
a schematic diagram of a particular embodiment of the embodiment according to Fig. 3 ,

Entsprechend Fig. 1 weist ein Luftansaugtrakt 1 einer Brennkraftmaschine 2 ein Luftfilter 3 auf, in dem ein Filterelement 4 eine Rohseite 5 von einer Reinseite 6 trennt. Eine Verbindungsleitung 7, die beispielsweise durch ein Rohr gebildet sein kann, verbindet das Luftfilter 3 mit einem Luftsammler 8, der die angesaugte Frischluft auf einzelne Zylinder 9 der Brennkraftmaschine 2 verteilt. Innerhalb dieses Luftansaugtraktes 1 ist während des Betriebs der Brennkraftmaschine 2 ein Schallfeld ausgebildet, dessen Klang- oder Geräuschcharakteristik mit einer von der Brennkraftmaschine 2 erbrachten Leistung, insbesondere mit deren Drehzahl, korreliert. Um den Fahrzeuginsassen, vor allem dem Fahrzeugführer, ein akustisches Feedback der Brennkraftmaschinentätigkeit zu liefern, verfügt das im übrigen nicht dargestellte Kraftfahrzeug, das insbesondere ein Personenkraftwagen, vorzugsweise ein Sportwagen ist, über eine in den Fig. 2 und 3 dargestellte Schallübertragungsvorrichtung 10.Corresponding Fig. 1 For example, an air intake tract 1 of an internal combustion engine 2 has an air filter 3 in which a filter element 4 separates a raw side 5 from a clean side 6. A connecting line 7, which may be formed for example by a pipe, connects the air filter 3 with an air collector 8, which distributes the sucked fresh air to individual cylinders 9 of the internal combustion engine 2. Within this air intake tract 1, a sound field is formed during the operation of the internal combustion engine 2, whose sound or noise characteristic correlates with a power provided by the internal combustion engine 2, in particular with its rotational speed. In order to provide the vehicle occupants, especially the driver, an acoustic feedback of the engine operation, the motor vehicle, not shown otherwise, which is in particular a passenger car, preferably a sports car, has a in the FIGS. 2 and 3 illustrated sound transmission device 10th

Entsprechend Fig. 1 wird eine Eingangsseite 11 dieser Schallübertragungsvorrichtung 10 vorzugsweise an die Verbindungsleitung 7 des Ansaugtraktes 1 angeschlossen. Ebenso sind Ausführungsformen möglich, bei denen die Eingangsseite 11' mit der Reinseite 6 des Luftfilters 3 verbunden ist. Bei manchen Fahrzeugtypen kann es vorteilhaft sein, die Eingangsseite 11'' an den Luftsammler 8 anzuschließen. Bei einer anderen Ausführungsform kann die Eingangsseite 11''' mit der Rohseite 5 des Luftfilters 3 verbunden sein. Ebenso ist es möglich, die Eingangsseite 11'''' stromauf des Luftfilters 3 an die Rohseite des Ansaugtrakts 1 anzuschließen. Bei den Ausführungsformen, bei welchen die Schallübertragungsvorrichtung 10 mit der Reinseite des Luftansaugtrakts 1 kommuniziert, ist darauf zu achten, dass die Schallübertragungsvorrichtung 10 nach außen luftdicht ausgebildet ist.Corresponding Fig. 1 an input side 11 of this sound transmission device 10 is preferably connected to the connecting line 7 of the intake tract 1. Likewise, embodiments are possible in which the input side 11 'is connected to the clean side 6 of the air filter 3. In some types of vehicle, it may be advantageous to connect the input side 11 "to the air collector 8. In another embodiment, the input side 11 '"may be connected to the raw side 5 of the air filter 3. It is also possible, the input side 11 '''' upstream of the air filter 3 to connect to the raw side of the intake manifold 1. In the embodiments in which the sound transmission device 10 communicates with the clean side of the air intake tract 1, care should be taken that the sound transmission device 10 is made airtight to the outside.

Entsprechend Fig. 2 besitzt die erfindungsgemäße Schallübertragungsvorrichtung 10 beispielsweise drei hohle Übertragungsleitungen 12, die hier relativ nahe beieinander an die Verbindungsleitung 7 angeschlossen sind. Ebenso ist es möglich, dass die verschiedenen Übertragungsleitungen 12 an unterschiedlichen Stellen an den Ansaugtrakt 1 angeschlossen sind. Hierzu wird auf die oben, beispielhaft aufgezählten Anschlussmöglichkeiten der Eingangsseite 11 bis 11'''' verwiesen.Corresponding Fig. 2 has the sound transmission device 10 according to the invention, for example, three hollow transmission lines 12, which are connected here relatively close to each other to the connecting line 7. It is also possible that the various transmission lines 12 are connected at different points to the intake tract 1. For this purpose, reference is made to the connection possibilities of the input side 11 to 11 "", listed above by way of example.

Jede Übertragungsleitung 12 führt zu einer Resonatorkammer 13. Jede Resonatorkammer 13 ist eingangsseitig über eine Membran 14 von der zugehörigen Übertragungsleitung 12 gasdicht getrennt und ausgangsseitig mit einem Austrittsrohr 15 verbunden. In der hier dargestellten Ausführungsform sind alle Austrittsrohre 15 an einen gemeinsamen Sammler 16 angeschlossen, der für sämtliche Resonatorkammern 13 ein gemeinsames Schallaustrittsrohr 17 aufweist, das hier mit einem trichterförmigen Austritt 18 ausgestattet ist. Dieser Austritt 18 ist frontal vor einer Trennwand 19, der sogenannten "Spritzwand", positioniert, die einen Motorraum 20 von einem Fahrzeuginnenraum 21 trennt. Dementsprechend erfolgt die Schallübertragung durch diese Trennwand 19 hindurch. Ebenso ist es möglich, den Schallaustritt 18 in der Trennwand 19 auszubilden bzw. das Schallaustrittsrohr 17 durch die Trennwand 19 hindurchzuführen, um so den Schallaustritt 18 direkt im Fahrzeuginnenraum 21 anzuordnen.Each transmission line 12 leads to a resonator chamber 13. Each resonator chamber 13 is separated on the input side via a membrane 14 from the associated transmission line 12 in a gastight manner and connected on the output side to an outlet tube 15. In the embodiment shown here, all outlet pipes 15 are connected to a common collector 16, which has a common sound outlet pipe 17 for all resonator chambers 13, which is here equipped with a funnel-shaped outlet 18. This outlet 18 is positioned frontally in front of a partition wall 19, the so-called "bulkhead", which separates an engine compartment 20 from a vehicle interior 21. Accordingly, the sound transmission takes place through this partition 19 therethrough. Likewise, it is possible to form the sound outlet 18 in the partition wall 19 or to pass the sound outlet pipe 17 through the partition wall 19 so as to arrange the sound outlet 18 directly in the vehicle interior 21.

Jede Übertragungsleitung 12 bildet zusammen mit der zugehörigen Resonatorkammer 13 und der zugehörigen Membran 14 ein Schallübertragungssystem, so dass bei der in Fig. 2 dargestellten Ausführungsform drei solche Schallübertragungssysteme vorliegen, die gleichzeitig oder parallel wirksam sein können. Ebenso sind Ausführungsformen mit mehr oder weniger Schallübertragungssystemen möglich. Die einzelnen Schallübertragungssysteme sind vorzugsweise hinsichtlich unterschiedlicher Frequenzen abgestimmt, um so eine gewünschte Breitbandwirkung für die Schallübertragungsvorrichtung 10 zu realisieren. Wenigstens zwei der Resonatorkammern 13 sind demnach hinsichtlich ihrer Frequenzabstimmung voneinander unterschiedlich ausgebildet. Beispielsweise unterscheiden sie sich hinsichtlich ihres Volumens. Darüber hinaus können auch die einzelnen Membranen 14 hinsichtlich ihrer Frequenzabstimmung voneinander unterschiedlich ausgestaltet sein. Beispielsweise können die einzelnen Membranen sich hinsichtlich ihres Durchmessers voneinander unterscheiden. Ebenso können unterschiedliche Materialien, unterschiedliche Dicken und Massebelegungen gewählt werden. Des weiteren können sich auch die einzelnen Übertragungsleitungen 12 voneinander unterscheiden, z.B. hinsichtlich ihres Durchmessers und/oder hinsichtlich ihrer Länge.Each transmission line 12, together with the associated resonator chamber 13 and the associated membrane 14, a sound transmission system, so that in the in Fig. 2 illustrated embodiment, there are three such sound transmission systems that can be effective simultaneously or in parallel. Likewise, embodiments are possible with more or fewer sound transmission systems. The individual sound transmission systems are preferably tuned with respect to different frequencies so as to realize a desired broadband effect for the sound transmission device 10. At least two of the resonator chambers 13 are accordingly designed differently with regard to their frequency tuning. For example, they differ in their volume. In addition, the individual membranes 14 may be designed differently with respect to their frequency tuning each other. For example, the individual membranes can differ from each other in terms of their diameter. Likewise, different materials, different thicknesses and mass assignments can be selected. Furthermore, the individual transmission lines 12 may differ from each other, for example with respect to their diameter and / or in terms of their length.

Von besonderem Vorteil ist eine Ausführungsform, bei der wenigstens eine der Übertragungsleitungen 12 als sogenannter "λ/2-Resonator" ausgebildet ist. Wenn mehrere Übertragungsleitungen 12 als λ/2-Resonatoren ausgebildet sind, können diese hinsichtlich unterschiedlicher Resonanzfrequenzen ausgebildet sein.Of particular advantage is an embodiment in which at least one of the transmission lines 12 is formed as a so-called "λ / 2 resonator". If a plurality of transmission lines 12 are formed as λ / 2 resonators, they may be formed with respect to different resonance frequencies.

Fig. 2 zeigt eine bevorzugte Ausführungsform, bei der die erfindungsgemäße Schallübertragungsvorrichtung 10 Schaltmittel 22 aufweist, mit denen die einzelnen Schallübertragungssysteme bzw. die einzelnen Resonatorkammern 13 aktivierbar und deaktivierbar sind. Die Schaltmittel 22 weisen dabei in jeder Übertragungsleitung 12 eine Klappe 23 auf, die jeweils beispielhaft um eine senkrecht zur Zeichnungsebene verlaufende Schwenkachse 24 schwenkverstellbar ist. Des weiteren sind Stellglieder 25 vorgesehen, die jeweils eine der Klappen 23 zum Verstellen antreiben. Die einzelnen Stellglieder 25 sind dabei über entsprechende Steuerleitungen 26 mit einer Steuerung 27 verbunden, welche die einzelnen Stellglieder 25 in Abhängigkeit vorbestimmter Parameter betätigt. Fig. 2 shows a preferred embodiment in which the sound transmission device 10 according to the invention comprises switching means 22 with which the individual sound transmission systems or the individual resonator chambers 13 can be activated and deactivated. The switching means 22 in this case have in each transmission line 12 a flap 23 which is pivotally adjustable in each case by way of example about a pivot axis 24 extending perpendicular to the plane of the drawing. Furthermore, actuators 25 are provided, each driving one of the flaps 23 for adjustment. The individual actuators 25 are connected via corresponding control lines 26 with a controller 27 which actuates the individual actuators 25 in response to predetermined parameters.

Entsprechend Fig. 3 ist bei einer anderen Ausführungsform der erfindungsgemäßen Schallübertragungsvorrichtung 10 jede Resonatorkammer 13 über eine separate Anschlussleitung 28 an eine gemeinsame Übertragungsleitung 29 angeschlossen, die ihrerseits mit ihrer Eingangsseite 11 an den Ansaugtrakt 1, hier an die Luftleitung 7, angeschlossen ist. Wie hier dargestellt, können die einzelnen Anschlussleitungen 28 an unterschiedlichen Stellen 30 und 31 an die gemeinsame Übertragungsleitung 29 angeschlossen sein. Ebenso ist es möglich, dass alle Anschlussleitungen 28 etwa an derselben Stelle von der gemeinsamen Übertragungsleitung 29 abzweigen bzw. ausgehen.Corresponding Fig. 3 In another embodiment of the sound transmission device 10 according to the invention, each resonator chamber 13 is connected via a separate connecting line 28 to a common transmission line 29, which in turn is connected with its input side 11 to the intake tract 1, here to the air line 7. As shown here, the individual connection lines 28 may be connected to the common transmission line 29 at different locations 30 and 31. It is also possible for all connecting lines 28 to branch off from the common transmission line 29 at about the same point.

Die einzelnen Anschlussleitungen 28 können sich voneinander unterscheiden, vorzugsweise hinsichtlich ihres Durchmessers und/oder ihrer Länge. Auch die Anschlussleitungen 28 können als λ/2-Resonator ausgebildet sein.The individual connection lines 28 may differ from one another, preferably with regard to their diameter and / or their length. The connection lines 28 may also be formed as λ / 2 resonator.

Auch bei der in Fig. 3 gezeigten Ausführungsform sind die einzelnen Anschlussleitungen 28 bzw. die damit gekoppelten Resonatorkammern 13 schaltbar ausgestaltet, das heißt, es sind Schaltmittel 22 mit Klappe 23 und Stellglied 25 vorgesehen.Also at the in Fig. 3 In the embodiment shown, the individual connection lines 28 or the resonator chambers 13 coupled thereto are designed to be switchable, that is, switching means 22 with flap 23 and actuator 25 are provided.

Durch die-Betätigung der Stellglieder 25 können die Klappen 23 verschwenkt werden, um den Querschnitt der Übertragungsleitung 12 (im Beispiel gemäß Fig. 2) oder der Anschlussleitung 28 (im Beispiel gemäß Fig. 3) zum Aktivieren der jeweiligen Resonatorkammer 13 zu öffnen und zum Deaktivieren der jeweiligen Resonatorkammer 13 zu schließen. Dementsprechend sind in Fig. 2 die obere und die mittlere Resonatorkammer 13 aktiviert, während die untere Resonatorkammer 13 deaktiviert ist. Im Unterschied dazu sind in der Ausführungsform gemäß Fig. 3 die obere und die untere Resonatorkammer 13 aktiviert, während die mittlere Resonatorkammer 13 deaktiviert ist.By the actuation of the actuators 25, the flaps 23 can be pivoted to the cross section of the transmission line 12 (in the example according to FIG Fig. 2 ) or the connecting line 28 (in the example according to Fig. 3 ) to activate the respective resonator chamber 13 to open and close to deactivate the respective resonator 13. Accordingly, in Fig. 2 the upper and the middle resonator chamber 13 is activated while the lower resonator chamber 13 is deactivated. In contrast, in the embodiment according to Fig. 3 the upper and lower resonator chambers 13 are activated while the central resonator chamber 13 is deactivated.

Die in Fig. 3 gezeigten Resonatorkammern 13 unterscheiden sich von denjenigen der Fig. 2 durch die Anordnung der Membranen 14. In Fig. 3 sind die Membranen so innerhalb der Resonatorkammern 13 angeordnet, dass die Membran 14 dort einen eingangsseitigen ersten Raum 32 von einem ausgangsseitigen zweiten Raum 33 trennt. Dabei bildet der jeweilige erste Raum 32 einen sogenannten "Helmholtz-Resonator". Wie bereits oben zu Fig. 2 erläutert, können die einzelnen Resonatorkammern 13 hinsichtlich ihrer Frequenzabstimmung unterschiedlich ausgestaltet sein, wobei sich die einzelnen Schallübertragungssysteme hinsichtlich der Ausgestaltung der Anschlussleitungen 28, sowie der Volumina der Resonatorkammern 13 voneinander unterscheiden können. Ebenso können die Membranen 14 unterschiedlich ausgebildet sein. Bei der Ausführungsform gemäß Fig. 3 können sich unterschiedliche Frequenzabstimmungen auch durch Variationen der Größe des ersten Raums 32 und/oder des zweiten Raums 33 ergeben.In the Fig. 3 shown resonator chambers 13 are different from those of Fig. 2 by the arrangement of the membranes 14. In Fig. 3 the membranes are arranged within the resonator chambers 13, that the membrane 14 there separates an input-side first space 32 from an output-side second space 33. In this case, the respective first space 32 forms a so-called "Helmholtz resonator". As already above Fig. 2 explained, the individual resonator chambers 13 may be configured differently with respect to their frequency tuning, wherein the individual sound transmission systems with respect to the configuration of the connecting lines 28, and the volumes of the resonator chambers 13 may differ from each other. Likewise, the membranes 14 may be formed differently. In the embodiment according to Fig. 3 Different frequency responses may also result from variations in the size of the first space 32 and / or the second space 33.

Um die Schallabstrahlcharakteristik der Resonatorkammern 13 zu verändern, kann beispielsweise in die zweite Kammer 33 ein Dämpfungskörper 34 eingesetzt sein, der beispielsweise aus einem offenporigen Schaumstoff gebildet ist. Ebenso ist es möglich, ein derartiges Dämpfungsmaterial auch im jeweiligen Austrittsrohr 15 oder auch im ersten Raum 32 oder in der Anschlussleitung 28 unterzubringen. Beispielhaft ist dieser Dämpfungskörper 34 in Fig. 3 nur in das untere Schallübertragungssystem eingesetzt. Ebenso kann ein derartiges oder ein anderes Dämpfungsmaterial auch in den anderen Schallübertragungssystemen angeordnet werden.In order to change the Schallabstrahlcharakteristik the resonator 13, a damping body 34 may be used, for example, in the second chamber 33, which is formed for example of an open-cell foam. It is also possible to accommodate such a damping material in the respective outlet tube 15 or in the first space 32 or in the connecting line 28. By way of example, this damping body 34 is in Fig. 3 only used in the lower sound transmission system. Likewise, such or another damping material can also be arranged in the other sound transmission systems.

Ebenso beispielhaft ist im Schallaustrittsrohr 17 des oberen Schallübertragungssystems eine Blende 35 angeordnet, deren Blendenquerschnitt kleiner ist als der Rohrquerschnitt des Austrittsrohrs 15. Durch die Einstellung des Blendenquerschnitts kann ebenfalls das akustische Verhalten des Resonanzsystems variiert werden.Likewise by way of example, a diaphragm 35 is arranged in the sound outlet tube 17 of the upper sound transmission system whose diaphragm cross-section is smaller than the tube cross-section of the outlet tube 15. By adjusting the diaphragm cross section also the acoustic behavior of the resonance system can be varied.

Im Unterschied zur Ausführungsform gemäß Fig. 2 ist bei der Variante gemäß Fig. 3 kein gemeinsamer Sammler 16 vorgesehen, vielmehr weist jedes Austrittsrohr 15 einen eigenen Schallaustritt 18 auf; diese sind jeweils nahe der Trennwand 19 positioniert. Auch hier ist es möglich, die Schallaustritte 18 in oder jenseits der Trennwand 19 anzuordnen.In contrast to the embodiment according to Fig. 2 is in the variant according to Fig. 3 no common collector 16 provided, but each outlet pipe 15 has its own sound outlet 18; these are each positioned near the partition 19. Again, it is possible to arrange the sound exits 18 in or beyond the partition 19.

Da die erfindungsgemäße Schallübertragungsvorrichtung 10 zur Verstärkung unterschiedlicher Frequenzen bzw. Frequenzbänder ausgebildet ist, ergeben sich relativ vielfältige Gestaltungsmöglichkeiten für die Generierung und Modulation eines erwünschten Motorsounds im Fahrzeuginnenraum 21. Von besonderem Interesse ist dabei die Ausführungsform mit schaltbaren Resonatorkammern 13. Hierbei kann die Steuerung 27 die Schaltmittel 22 zum Beispiel in Abhängigkeit des aktuellen Betriebszustands der Brennkraftmaschine 2 betätigen. Dabei ist es möglich, die Resonatorkammern 13 einzeln zu aktivieren bzw. zu deaktivieren. Insbesondere können zwei oder mehr Resonatorkammern parallel aktiviert werden. Ebenso können alle Resonatorkammern aktiviert oder deaktiviert werden. Dabei ist es grundsätzlich möglich, zwei von mehreren Schallübertragungssystemen hinsichtlich derselben Frequenz auszulegen, wobei in einem ersten Betriebspunkt nur eines dieser Schallübertragungssysteme aktiv ist, während in einem zweiten Betriebspunkt beide Schallübertragungssysteme parallel aktiviert werden, um die zugeordnete Frequenz nochmals zu verstärken.Since the sound transmission device 10 according to the invention is designed to amplify different frequencies or frequency bands, there are relatively diverse design options for the generation and modulation of a desired engine sound in the vehicle interior 21. Of particular interest is the embodiment with switchable resonator chambers 13. In this case, the controller 27 can Actuate switching means 22, for example, depending on the current operating state of the internal combustion engine 2. It is possible to activate or deactivate the resonator chambers 13 individually. In particular, two or more resonator chambers can be activated in parallel. Likewise, all resonator chambers can be activated or deactivated. It is basically possible to design two of several sound transmission systems with respect to the same frequency, wherein in a first operating point only one of these sound transmission systems is active, while in a second operating point both sound transmission systems are activated in parallel in order to reinforce the assigned frequency again.

Bei einer Brennkraftmaschine 2, die mit einer Schaltsauganlage ausgestattet ist, kommt es drehzahlabhängig zu Schaltvorgängen, mit denen zur Verbesserung des Ladeverhaltens die Saugrohrlängen verändert werden. Mit diesen Schaltvorgängen geht regelmäßig eine Veränderung der von der Brennkraftmaschine 2 abgestrahlten Schallcharakteristik einher. Um nachteilige Auswirkungen derartiger Schaltvorgänge für die Geräuschentwicklung im Fahrzeuginnenraum 21 zu reduzieren, kann die Betätigung der Schaltmittel 22 bei einer bevorzugten Ausführungsform in Abhängigkeit der Schaltzustände dieser Schaltsauganlage durchgeführt werden.In an internal combustion engine 2, which is equipped with a Schaltsauganlage, it comes speed-dependent switching operations, which are changed to improve the charging behavior, the Saugrohrlängen. With these switching operations is regularly accompanied by a change in the emitted from the internal combustion engine 2 sound characteristic. To reduce adverse effects of such switching operations for the noise in the vehicle interior 21, the actuation of the switching means 22 may be performed in a preferred embodiment, depending on the switching states of this Schaltsauganlage.

Bei der Ausführungsform gemäß Fig. 3 sind die Anschlussleitungen 28 des oberen und des unteren Schallübertragungssystems so an die gemeinsame Übertragungsleitung 29 angeschlossen, dass sie im wesentlichen senkrecht in diese einmünden. Im Unterschied dazu stellt die Anschlussleitung 28 des mittleren Schallübertragungssystems eine koaxiale Verlängerung der gemeinsamen Übertragungsleitung 29 dar. Grundsätzlich sind jedoch auch andere, insbesondere beliebige, Anschlusswinkel möglich.In the embodiment according to Fig. 3 the connection lines 28 of the upper and lower sound transmission system are connected to the common transmission line 29 so that they open substantially perpendicularly in this. In contrast, the connecting line 28 of the central sound transmission system is a coaxial extension of the common transmission line 29. In principle, however, other, in particular any, connection angle are possible.

Durch den senkrechten Anschluss können die Anschlussleitungen 28 des oberen und des unteren Schallübertragungssystems jeweils als λ/2-Resonator ausgebildet werden. Durch die fluchtende Anordnung der Anschlussleitung 28 des mittleren Schallübertragungssystems, kann diese Anschlussleitung 28 zusammen mit der gemeinsamen Übertragungsleitung 29 ebenfalls einen λ/2-Resonator ausbilden.Due to the vertical connection, the connection lines 28 of the upper and lower sound transmission system can each be formed as a λ / 2 resonator. Due to the aligned arrangement of the connection line 28 of the middle sound transmission system, this connection line 28 together with the common transmission line 29 also form a λ / 2 resonator.

Entsprechend Fig. 4 kann bei einer Weiterbildung der Vorrichtung 10 gemäß Fig. 2 der Sammler 16 bei einer besonderen Ausführungsform mit mehreren, hier zwei, gemeinsamen Austrittsrohren 17' und 17" ausgestattet sein, die sich hinsichtlich ihrer Abmessungen voneinander unterscheiden. Auch durch diese Maßnahme kann das Spektrum der abgestrahlten Schallfrequenzen beeinflußt werden.Corresponding Fig. 4 can in accordance with a development of the device 10 Fig. 2 in a particular embodiment, the collector 16 may be equipped with a plurality of, here two, common outlet pipes 17 'and 17 ", which differ in terms of their dimensions from one another.

Gemäß Fig. 5 kann bei einer Weiterbildung der Vorrichtung 10 gemäß Fig. 3 zumindest eine der Resonatorkammern 13 mit mehreren, hier drei, Austrittsrohren 15', 15'' und 15''' ausgestattet sein, die sich hinsichtlich ihrer Abmessungen voneinander unterscheiden. Auch hier kann innerhalb einer Resonatorkammer 13 die Charakteristik des abgestrahlten Schalls beeinflußt werden. Insbesondere ergibt sich durch die Anordnung mehrerer Austrittsrohre 15 bzw. 17 (vgl. Fig. 4) eine erhöhte Breitbandigkeit des abgestrahlten Schalls.According to Fig. 5 can in accordance with a development of the device 10 Fig. 3 at least one of the resonator chambers 13 with a plurality, here three, outlet tubes 15 ', 15''and15''' be equipped, which differ from each other in terms of their dimensions. Again, the characteristic of the radiated sound can be influenced within a resonator 13. In particular, results from the arrangement of several outlet pipes 15 and 17 (see. Fig. 4 ) an increased broadband of the radiated sound.

Claims (17)

  1. A device for targeted noise transmission from an intake tract (1) of an internal combustion engine (2) of a motor vehicle to an interior space (21) of the motor vehicle, having at least one hollow transmission line (12; 29), which is connected on the input side to communicate with the intake tract (1) and to which at least one resonator chamber (13) is connected, which emits the noise to the vehicle interior space (21),
    characterized in that
    multiple resonator chambers (13), which act in parallel, are provided, at least two of which differ from one another in regard to their frequency tuning.
  2. The device according to Claim 1,
    characterized in that
    each resonator chamber (13) is connected to the intake tract (1) via a separate transmission line (12).
  3. The device according to Claim 1,
    characterized in that
    all resonator chambers (13) are connected to the intake tract (1) via a joint transmission line (29) in such a way that each resonator chamber (13) is connected via a separate connection line (28) to the shared transmission line (29).
  4. The device according to Claim 3,
    characterized in that
    the connection lines (28) are connected to different points (30, 31) on the joint transmission line (29).
  5. The device according to one of Claims 1 through 4,
    characterized in that
    the noise transmission paths from the intake tract (1) to the resonator chambers (13) are implemented as half-wave resonators or have a section implemented as a half-wave resonator, at least two of the half-wave resonators differing from one another in regard to their frequency tuning.
  6. The device according to at least Claims 3 and 5,
    characterized in that
    at least one of the connection lines (28) is implemented as a half-wave resonator.
  7. The device according to at least Claims 3 and 5,
    characterized in that
    at least one of the connection lines (28) is implemented together with the joint transmission line (29) as a half-wave resonator.
  8. The device according to one of Claims 1 through 7,
    characterized in that
    each resonator chamber (13) is assigned a membrane (14).
  9. The device according to Claim 8,
    characterized in that
    at least one of the membranes (14) separates an input-side first space (32) from an output-side second space (33) in the associated resonator chamber (13).
  10. The device according to Claim 8 or 9,
    characterized in that
    at least two of the membranes (14) differ from one another in regard to their frequency tuning.
  11. The device according to one of Claims 1 to 10,
    characterized in that
    the resonator chambers (13) are connected on the output side to a joint header (16), via which the resonator chambers (13) emit the noise to the vehicle interior space (21).
  12. The device according to one of Claims 1 to 11,
    characterized in that
    switching means (22) are provided, using which at least one of the resonator chambers (13) may be activated and deactivated.
  13. The device according to Claim 12,
    characterized in that
    the switching means (22) for switching a resonator chamber (13) have a flap (23), which opens the cross-section of the associated transmission line (12) or connection line (28) for activation and closes it for deactivation.
  14. The device according to Claim 12 or 13,
    characterized in that
    the switching means (22) switch on, switch off, and connect the resonator chambers (13) as a function of the operating state of the internal combustion engine (2).
  15. The device according to one of Claims 12 through 14,
    characterized in that
    the switching means (22), in an internal combustion engine (2) which is equipped with a active intake system, switch on, switch off, and connect the resonator chambers (13) as a function of the switching state of the active intake system.
  16. The device according to one of Claims 1 through 15,
    characterized in that
    at least one of the resonator chambers (13) has multiple outlet pipes (15', 15", 15"') on the output side having different dimensions.
  17. The device according to at least Claim 11,
    characterized in that
    the header (16) has multiple joint outlet pipes (17', 17") having different dimensions.
EP02724120A 2001-03-23 2002-03-22 Sound transmission device for a motor vehicle Expired - Lifetime EP1371056B2 (en)

Applications Claiming Priority (3)

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DE10114397 2001-03-23
DE10114397A DE10114397A1 (en) 2001-03-23 2001-03-23 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
PCT/DE2002/001045 WO2002077969A1 (en) 2001-03-23 2002-03-22 Sound transmission device for a motor vehicle

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EP1371056A1 EP1371056A1 (en) 2003-12-17
EP1371056B1 EP1371056B1 (en) 2005-08-03
EP1371056B2 true EP1371056B2 (en) 2008-06-18

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EP (1) EP1371056B2 (en)
DE (2) DE10114397A1 (en)
ES (1) ES2246397T3 (en)
WO (1) WO2002077969A1 (en)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10217760B4 (en) * 2002-04-20 2010-08-12 Mahle Filtersysteme Gmbh Fresh gas supply system for an internal combustion engine
DE10223871A1 (en) * 2002-05-29 2003-12-11 Daimler Chrysler Ag Device for noise shaping in a motor vehicle
DE10223873A1 (en) * 2002-05-29 2003-12-11 Daimler Chrysler Ag Device for noise shaping in a motor vehicle
US20050121254A1 (en) * 2002-05-29 2005-06-09 Marcus Hofmann Device for establishing noise in a motor vehicle
DE10223872A1 (en) * 2002-05-29 2003-12-11 Daimler Chrysler Ag Device for noise shaping in a motor vehicle
JP3815678B2 (en) * 2003-03-19 2006-08-30 豊田合成株式会社 Intake device
DE112004002158T5 (en) * 2003-11-06 2006-11-02 Mahle Filter Systems Japan Corp. Intake device of an internal combustion engine
DE10352704A1 (en) * 2003-11-12 2005-06-16 Mann + Hummel Gmbh Device for transmitting noise in a motor vehicle with internal combustion engine
DE10359093B4 (en) * 2003-12-17 2006-07-27 Dr.Ing.H.C. F. Porsche Ag Device for transmitting sound to the passenger compartment of a motor vehicle
JP2007032427A (en) * 2005-07-27 2007-02-08 Mitsubishi Electric Corp Variable resonator
JP2007231931A (en) * 2006-01-31 2007-09-13 Nissan Motor Co Ltd Intake sound transmission device and intake sound transmission method
US20070186895A1 (en) * 2006-01-31 2007-08-16 Daisuke Ochi Air cleaner box, intake sound control apparatus, and intake sound control method
JP2008002318A (en) * 2006-06-21 2008-01-10 Nissan Motor Co Ltd Intake sound introducing device of vehicle
US7690478B2 (en) * 2006-09-15 2010-04-06 Visteon Global Technologies, Inc. Continuously variable tuned resonator
JP2008185054A (en) * 2007-01-26 2008-08-14 Yamaha Motor Co Ltd Belt-type continuously variable transmission having resin block belt, and motorcycle including it
DE102007026416B4 (en) 2007-06-06 2014-09-04 Audi Ag Device for influencing the intake noise of an internal combustion engine
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
US8009839B2 (en) * 2008-03-13 2011-08-30 Hagen Gary E Automotive sensory enhancement system
JP4993755B2 (en) * 2008-03-18 2012-08-08 日産自動車株式会社 Intake sound generator
US7658263B2 (en) * 2008-04-03 2010-02-09 Mann + Hummel Gmbh Device for noise transmission in a motor vehicle
US7950363B2 (en) * 2008-09-12 2011-05-31 Ford Global Technologies Air inlet system for internal combustion engine
JP5707721B2 (en) * 2009-04-21 2015-04-30 ヤマハ株式会社 Transmission sound control device
US20100314193A1 (en) * 2009-06-12 2010-12-16 Mann+Hummel Gmbh Membrane stiffening through ribbing for engine sound transmission device
US8011469B2 (en) * 2009-12-18 2011-09-06 Mann & Hummel Gmbh Tunable sound transmission device for a motor vehicle
DE102010005067B4 (en) 2010-01-15 2022-10-20 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Device for sound transmission
JP5639794B2 (en) * 2010-06-23 2014-12-10 株式会社マーレ フィルターシステムズ Intake sound generator for internal combustion engine
US8127888B1 (en) * 2011-02-02 2012-03-06 Mann + Hummel, GmbH Engine sound distribution apparatus for a motor vehicle
DE102011051689A1 (en) * 2011-07-08 2013-01-10 Dr. Ing. H.C. F. Porsche Ag Noise transmission system
DE102011051688B4 (en) * 2011-07-08 2022-10-20 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Control device of a noise transmission system
DE102011051691A1 (en) 2011-07-08 2013-01-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Noise transmission system
DE102011051690B4 (en) * 2011-07-08 2023-06-29 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Control device of a motor vehicle with a noise transmission system and an exhaust system
CN202746058U (en) * 2012-08-22 2013-02-20 曼胡默尔滤清器（上海）有限公司 Variable frequency helmholtz resonant cavity
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
DE102014204637B4 (en) * 2013-03-25 2021-10-07 Subaru Corporation Intake sound transmission device
JP2014234810A (en) * 2013-06-05 2014-12-15 株式会社マーレ フィルターシステムズ Intake sound generating device of internal combustion engine
DE102013114502B4 (en) * 2013-12-19 2024-05-16 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Sound transmission device
US9394864B2 (en) * 2014-06-11 2016-07-19 Ford Global Technologies, Llc Multi-frequency quarter-wave resonator for an internal combustion engine vehicle
US10024279B2 (en) * 2015-04-08 2018-07-17 Hyundai Motor Company Apparatus for improving cooling efficiency of engine room in vehicle
EP3112654A1 (en) * 2015-07-03 2017-01-04 Mann+Hummel GmbH Adapter of an acoustic system of a gas-ducting system, acoustic system and gas-ducting system with an acoustic system
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
DE102015121499A1 (en) * 2015-12-10 2017-06-14 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Noise transmission system for a motor vehicle
IT201600103942A1 (en) * 2016-10-17 2018-04-17 Ferrari Spa INTERNAL COMBUSTION ENGINE PROVIDED WITH A SUCTION NOISE AMPLIFICATION DEVICE
US10302052B2 (en) 2016-11-16 2019-05-28 Ford Global Technologies, Llc Vacuum actuated multi-frequency quarter-wave resonator for an internal combustion engine
US10197022B2 (en) * 2016-12-14 2019-02-05 GM Global Technology Operations LLC Adjustable sound distribution system and a vehicle
JP6544368B2 (en) * 2017-02-23 2019-07-17 トヨタ自動車株式会社 Intake sound introduction device
KR102554930B1 (en) * 2018-10-10 2023-07-12 현대자동차주식회사 Exhaust sound control device for vehicle
KR20200121453A (en) * 2019-04-16 2020-10-26 현대자동차주식회사 Device for controlling exhaust sound of vehicle
GB202111213D0 (en) * 2021-08-03 2021-09-15 Mclaren Automotive Ltd Improved sound bypass

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02248610A (en) * 1989-03-22 1990-10-04 Mazda Motor Corp Engine exhaust sound introduction device
US5628287A (en) * 1994-09-30 1997-05-13 Siemens Electric Limited Adjustable configuration noise attenuation device for an air induction system
DE4435296C2 (en) * 1994-10-01 2002-04-25 Bayerische Motoren Werke Ag Motor vehicle with an internal combustion engine
JP3562235B2 (en) * 1997-07-03 2004-09-08 日産自動車株式会社 Intake noise reduction device for internal combustion engine
DE19754840C2 (en) * 1997-12-10 2001-01-18 Mahle Filtersysteme Gmbh Silencer arrangement, in particular intake silencer arrangement
DE19831576A1 (en) * 1998-07-14 2000-01-20 Tuev Automotive Gmbh Unternehm Procedure for generating from operation of IC engine, corresponding noises in cabin of car has pressure variations detected in fresh air flow passed to engine and converted into signals, made audible via loudspeaker(s) in cabin
JP4240168B2 (en) * 1998-08-18 2009-03-18 株式会社デンソー Silencer
DE19922216A1 (en) * 1999-05-14 2000-11-30 Mahle Filtersysteme Gmbh Sound transmission device for a motor vehicle
GB2354986A (en) * 1999-10-08 2001-04-11 Rover Group Transmitting engine intake noise to the passenger compartment in a motor vehicle
DE10042012B4 (en) * 1999-11-22 2004-08-19 Daimlerchrysler Ag Device for noise shaping in a motor vehicle
DE10015697C1 (en) * 2000-03-29 2001-12-20 Wolf Woco & Co Franz J Sound converter for exhaust gas pulsations
DE10016104C2 (en) 2000-03-31 2002-03-21 Audi Ag Device for sound reinforcement in the passenger compartment of a motor vehicle
JP3645864B2 (en) * 2001-03-21 2005-05-11 ダイムラークライスラー アーゲー Equipment for noise configuration in motor vehicles

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DE50203827D1 (en) 2005-09-08
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WO2002077969A1 (en) 2002-10-03
EP1371056A1 (en) 2003-12-17
US6848410B2 (en) 2005-02-01
US20040094112A1 (en) 2004-05-20
EP1371056B1 (en) 2005-08-03

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