EP1371056B1 - Schallübertragungsvorrichtung für ein kraftfahrzeug - Google Patents
Schallübertragungsvorrichtung für ein kraftfahrzeug Download PDFInfo
- Publication number
- EP1371056B1 EP1371056B1 EP02724120A EP02724120A EP1371056B1 EP 1371056 B1 EP1371056 B1 EP 1371056B1 EP 02724120 A EP02724120 A EP 02724120A EP 02724120 A EP02724120 A EP 02724120A EP 1371056 B1 EP1371056 B1 EP 1371056B1
- Authority
- 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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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 targeted sound transmission from an intake tract of an internal combustion engine a motor vehicle, in particular a passenger car, to an interior of the motor vehicle, with the features of the preamble of claim 1.
- Such a sound transmission device is for example known from DE 199 22 216 A1 and has a hollow Transmission line on the input side with the intake the internal combustion engine is communicatively connected and to which a resonator chamber is connected.
- This resonator chamber is on a certain frequency or on one tuned to a specific frequency band and is aligned that they feed one via the transmission line Sound radiates to the vehicle interior.
- the present invention deals with the problem for a sound transmission device of the aforementioned To specify an embodiment in which the possibility for specific generation of a desired sound effect or sounds in the vehicle interior is improved.
- This problem is inventively achieved in that a plurality of parallel-acting resonator chambers are provided, at least two of them with regard to their frequency tuning differ from each other.
- the invention uses Thereby the realization that the sound transmission system of the inventive device operates with resonances, wherein Resonance effects usually only in relatively narrow frequency ranges occur.
- Resonance effects usually only in relatively narrow frequency ranges occur.
- By creating several resonator chambers can thus several, different resonance frequencies be exploited to the desired sound effect to generate.
- different resonator chambers can use different frequencies of the engine generated sound to be amplified in the Vehicle interior to produce the desired sound impression.
- the Schallübertragungsstrekken from the intake tract to the individual resonator chambers as be formed ⁇ / 2 resonators or one as a ⁇ / 2 resonator have trained portion, wherein from the ⁇ / 2 resonators at least two in terms of their frequency tuning differ from each other.
- each resonator chamber is preceded by a ⁇ / 2 resonator, resulting in an additional frequency gain achieve.
- each resonator chamber be associated with a membrane, which is supplied by the Sound is excited to vibrate.
- the first room forms a so-called "Helmholtz resonator", whose characteristic is the volume of the second space can be influenced.
- At least two of the membranes in terms of their frequency tuning differ from each other. Accordingly arise various possibilities for frequency tuning of the individual Resonator.
- switching means be provided with which the individual resonator chambers can be activated and deactivated.
- the individual resonator chambers be activated in succession, so that only one Resonator chamber is activated while all others disabled are. It is also possible several, in particular all to activate resonator chambers. It can be different Combinations are switched to different Generate sound effects.
- the switching means for activation or deactivation of the individual resonator chambers are preferably in such an internal combustion engine depending on the respective switching state of the Switch suction system actuated. That way, changes can happen the Schallabstrahlungs characterizing the internal combustion engine compensated when switching the switch intake system and / or be influenced, such that in the vehicle interior in each switching state of Wennsaugstrom a desired Hearing impression arises.
- an air intake tract 1 of an internal combustion engine 2 an air filter 3, in which a filter element 4 a raw side 5 of a clean side 6 separates.
- a Connecting line 7, for example, formed by a tube can connect the air filter 3 with a Air collector 8, the fresh air sucked on individual Cylinder 9 of the internal combustion engine 2 distributed.
- a sound field is formed whose sound or noise characteristic with one of the internal combustion engine 2 performed power, in particular with their speed, correlated.
- an acoustic feedback of the engine activity by the way, that does not work illustrated motor vehicle, in particular a passenger car, preferably a sports car is, about an in Figs. 2 and 3 illustrated sound transmission device 10th
- an input side 11 of this sound transmission device 10 preferably to the connecting line 7 of the intake tract 1 connected.
- the input side 11 ' is connected to the clean side 6 of the air filter 3. at For some types of vehicles, it may be beneficial to the input side 11 '' to connect to the air collector 8.
- the input side 11 ''' with 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 1. at the embodiments in which the sound transmission device 10 communicates with the clean side of the air intake tract 1, Care must be taken to ensure that the sound transmission device 10 is formed airtight to the outside.
- the sound transmission device has For example, three hollow transmission lines 12, here relatively close to each other Connecting line 7 are connected. It is also possible that the different transmission lines 12 at different Positions connected to the intake 1 are. For this purpose, reference is made to the above, by way of example Connection possibilities of the input side 11 to 11 '' '' referenced.
- Each transmission line 12 leads to a resonator chamber 13.
- Each resonator chamber 13 is on the input side via a Membrane 14 gas-tight from the associated transmission line 12 separated and output side with an outlet pipe 15th connected.
- all outlet pipes 15 are connected to a common collector 16, the one for all resonator 13 a common Sound outlet tube 17 has, here with a funnel-shaped outlet 18 is equipped.
- This exit 18 is frontal in front of a partition wall 19, the so-called "Bulkhead", which positions an engine compartment 20 from one Vehicle interior 21 separates. Accordingly, the Sound transmission through this partition 19 therethrough.
- the sound outlet 18 in the partition wall 19th form or the sound outlet tube 17 through the partition 19 pass, so the sound outlet 18 directly to arrange in the vehicle interior 21.
- Each transmission line 12 forms together with the associated Resonator chamber 13 and the associated membrane 14 a Sound transmission system, so that in the illustrated in Fig. 2 Embodiment three such sound transmission systems which may be active simultaneously or in parallel can. Likewise, embodiments are more or less Sound transmission systems possible.
- the individual sound transmission systems are preferably different in terms of Frequencies tuned to a desired Broadband effect for the sound transmission device 10 to realize.
- At least two of the resonator chambers 13 are therefore with regard to their frequency tuning each other designed differently. For example, differentiate they are in terms of their volume.
- the individual membranes can with regard to differ in diameter from each other. As well can use different materials, different thicknesses and mass assignments are selected.
- they can also the individual transmission lines 12 differ from each other, e.g. in terms of their diameter and / or in terms of their length.
- Fig. 2 shows a preferred embodiment in which the Sound transmission device 10 according to the invention switching means 22, with which the individual sound transmission systems or the individual resonator chambers 13 can be activated and can be deactivated.
- the switching means 22 have in each transmission line 12, a flap 23, respectively for example, a perpendicular to the plane of the drawing Swivel axis 24 is pivotally adjustable.
- Actuators 25 are provided, each one of the flaps 23 for adjustment.
- the individual actuators 25 are via corresponding control lines 26 with a Control 27 connected to the individual actuators 25 operated in response to predetermined parameters.
- Fig. 3 is in another embodiment the sound transmission device 10 according to the invention each Resonator chamber 13 via a separate connecting line 28 at a common transmission line 29 connected to the in turn with its input side 11 to the intake tract 1, here to the air line 7, is connected.
- each Resonator chamber 13 via a separate connecting line 28 at a common transmission line 29 connected to the in turn with its input side 11 to the intake tract 1, here to the air line 7, is connected.
- the individual connecting lines 28 at different Set 30 and 31 to the common transmission line 29 connected It is also possible that all connecting lines 28 approximately at the same point of the common transmission line 29 branch off or go out.
- connection lines 28 may be different from each other differ, preferably in terms of their diameter and / or their length. Also, the connection lines 28 can be formed as a ⁇ / 2 resonator.
- the flaps 23 are pivoted to the cross section of the transmission line 12 (in the example of FIG. 2) or the connecting line 28 (in the example of FIG. 3) for activating the respective Resonator chamber 13 to open and to disable the close each resonator chamber 13.
- the upper and the middle resonator chambers 13 while the lower resonator chamber 13 is deactivated is.
- the embodiment according to FIG. 3 activates the upper and lower resonator chambers 13, FIG. while the central resonator chamber 13 is deactivated is.
- the resonator chambers 13 shown in FIG. 3 differ from those of Fig. 2 by the arrangement of the membranes 14.
- the membranes are so within the resonator chambers 13 arranged that the membrane 14 there a input-side first space 32 from an output side second room 33 separates.
- the respective first forms Room 32 is a so-called "Helmholtz resonator".
- the individual resonator chambers 13 different in terms of their frequency tuning be configured, with the individual sound transmission systems with regard to the configuration of the connection lines 28, as well as the volumes of the resonator chambers 13 can differ from each other.
- the membranes can 14 may be formed differently.
- different frequency adjustments can occur also by variations of the size of the first one Room 32 and / or the second room 33 result.
- a damping body 34 may be used, for example is formed of an open-cell foam.
- a damping material in the respective Exhaust pipe 15 or in the first room 32 or in accommodate the connecting line 28 Exemplary this damping body 34 in Fig. 3 only in the lower sound transmission system used.
- a or another damping material in the other Sound transmission systems are arranged.
- the sound outlet tube 17 of the upper Sound transmission system arranged a diaphragm 35, whose Aperture cross section is smaller than the tube cross section of the Outlet pipe 15.
- the aperture cross section can also be the acoustic behavior of the resonance system be varied.
- each outlet pipe 15 has its own Sound exit 18 on; These are each near the partition 19 positioned. Again, it is possible the sound leaks 18 in or beyond the partition 19 to order.
- the sound transmission device 10 for Amplification of different frequencies or frequency bands is formed, resulting in relatively diverse design options for the generation and modulation of a desired engine sounds in the vehicle interior 21.
- the controller 27 the Switching means 22, for example, depending on the current Operate state of the internal combustion engine 2.
- the resonator chambers 13 individually or disable.
- two or more Resonator chambers are activated in parallel.
- all resonator chambers are activated or deactivated.
- two of several sound transmission systems to be interpreted in terms of 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 in parallel to activate the assigned frequency again strengthen.
- connection lines are 28 of the upper and lower sound transmission system so connected to the common transmission line 29, that they lead substantially perpendicularly in this.
- the connecting line 28 the middle acoustic transmission system a coaxial extension the common transmission line 29.
- the connecting cables 28 of the upper and lower sound transmission system each formed as a ⁇ / 2 resonator.
- the collector 16 in a particular Embodiment with several, here two, common outlet tubes 17 'and 17 "equipped with regard to their dimensions differ from each other. Also by this measure, the spectrum of the radiated Sound frequencies are affected.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Exhaust Silencers (AREA)
- Characterised By The Charging Evacuation (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
- 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.
Claims (17)
- Vorrichtung zur gezielten Schallübertragung von einem Ansaugtrakt (1) einer Brennkraftmaschine (2) eines Kraftfahrzeugs zu einem Innenraum (21) des Kraftfahrzeugs, mit mindestens einer hohlen Übertragungsleitung (12; 29), die eingangsseitig mit dem Ansaugtrakt (1) kommunizierend verbunden ist und an die mindestens eine Resonatorkammer (13) angeschlossen ist, die den Schall zum Fahrzeuginnenraum (21) abstrahlt,
dadurch gekennzeichnet, dass mehrere, parallel wirkende Resonatorkammern (13) vorgesehen sind, von denen sich mindestens zwei hinsichtlich ihrer Frequenzabstimmung voneinander unterscheiden. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass jede Resonatorkammer (13) über eine separate Übertragungsleitung (12) an den Ansaugtrakt (1) angeschlossen ist. - Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass alle Resonatorkammern (13) über eine gemeinsame Übertragungsleitung (29) an den Ansaugtrakt (1) angeschlossen sind, derart, dass jede Resonatorkammer (13) über eine separate Anschlussleitung (28) an die gemeinsame Übertragungsleitung (29) angeschlossen ist. - Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass die Anschlussleitungen (28) an unterschiedlichen Stellen (30, 31) an die gemeinsame Übertragungsleitung (29) angeschlossen sind. - Vorrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Schallübertragungsstrecken vom Ansaugtrakt (1) zu den Resonatorkammern (13) als λ/2-Resonatoren ausgebildet sind oder einen als λ/2-Resonator ausgebildeten Abschnitt aufweisen, wobei sich von den λ/2-Resonatoren zumindest zwei hinsichtlich ihrer Frequenzabstimmung voneinander unterscheiden. - Vorrichtung zumindest nach den Ansprüchen 3 und 5,
dadurch gekennzeichnet, dass wenigstens eine der Anschlussleitungen (28) als λ/2-Resonator ausgebildet ist. - Vorrichtung zumindest nach den Ansprüchen 3 und 5,
dadurch gekennzeichnet, dass mindestens eine der Anschlussleitungen (28) zusammen mit der gemeinsamen Übertragungsleitung (29) als λ/2-Resonator ausgebildet ist. - Vorrichtung nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass jeder Resonatorkammer (13) eine Membran (14) zugeordnet ist. - Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet, dass mindestens eine der Membranen (14) in der zugehörigen Resonatorkammer (13) einen eingangsseitigen ersten Raum (32) von einem ausgangsseitigen zweiten Raum (33) trennt. - Vorrichtung nach Anspruch 8 oder 9,
dadurch gekennzeichnet, dass sich zumindest zwei der Membranen (14) hinsichtlich ihrer Frequenzabstimmung voneinander unterscheiden. - Vorrichtung nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet, dass die Resonatorkammern (13) ausgangsseitig an einen gemeinsamen Sammler (16) angeschlossen sind, über den die Resonatorkammern (13) den Schall zum Fahrzeuginnenraum (21) abstrahlen. - Vorrichtung nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, dass Schaltmittel (22) vorgesehen sind, mit denen wenigstens eine der Resonatorkammern (13) aktivierbar und deaktivierbar ist. - Vorrichtung nach Anspruch 12,
dadurch gekennzeichnet, dass die Schaltmittel (22) zum Schalten einer Resonatorkammer (13) eine Klappe (23) aufweisen, die den Querschnitt der zugehörigen Übertragungsleitung (12) oder Anschlussleitung (28) zum Aktivieren öffnet und zum Deaktivieren schließt. - Vorrichtung nach Anspruch 12 oder 13,
dadurch gekennzeichnet, dass die Schaltmittel (22) in Abhängigkeit des Betriebszustands der Brennkraftmaschine (2) die Resonatorkammern (13) anschalten, abschalten und zuschalten. - Vorrichtung nach einem der Ansprüche 12 bis 14,
dadurch gekennzeichnet, dass die Schaltmittel (22) bei einer Brennkraftmaschine (2), die mit einer Schaltsauganlage ausgestattet ist, die Resonatorkammern (13) in Abhängigkeit des Schaltzustands der Schaltsauganlage an-, ab- und zuschalten. - Vorrichtung nach einem der Ansprüche 1 bis 15,
dadurch gekennzeichnet, dass zumindest eine der Resonatorkammern (13) ausgangsseitig mehrere Austrittsrohre (15', 15'', 15''') mit unterschiedlichen Abmessungen aufweist. - Vorrichtung zumindest nach Anspruch 11,
dadurch gekennzeichnet, dass der Sammler (16) mehrere gemeinsame Austrittsrohre (17', 17'') mit unterschiedlichen Abmessungen aufweist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10114397 | 2001-03-23 | ||
DE10114397A DE10114397A1 (de) | 2001-03-23 | 2001-03-23 | Schallübertragungsvorrichtung für ein Kraftfahrzeug |
PCT/DE2002/001045 WO2002077969A1 (de) | 2001-03-23 | 2002-03-22 | Schallübertragungsvorrichtung für ein kraftfahrzeug |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1371056A1 EP1371056A1 (de) | 2003-12-17 |
EP1371056B1 true EP1371056B1 (de) | 2005-08-03 |
EP1371056B2 EP1371056B2 (de) | 2008-06-18 |
Family
ID=7678793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02724120A Expired - Lifetime EP1371056B2 (de) | 2001-03-23 | 2002-03-22 | Schallübertragungsvorrichtung für ein kraftfahrzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US6848410B2 (de) |
EP (1) | EP1371056B2 (de) |
DE (2) | DE10114397A1 (de) |
ES (1) | ES2246397T3 (de) |
WO (1) | WO2002077969A1 (de) |
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JPH02248610A (ja) | 1989-03-22 | 1990-10-04 | Mazda Motor Corp | エンジンの排気音導入装置 |
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DE4435296C2 (de) * | 1994-10-01 | 2002-04-25 | Bayerische Motoren Werke Ag | Kraftfahrzeug mit einer Brennkraftmaschine |
JP3562235B2 (ja) * | 1997-07-03 | 2004-09-08 | 日産自動車株式会社 | 内燃機関の吸気騒音低減装置 |
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 |
JP4240168B2 (ja) * | 1998-08-18 | 2009-03-18 | 株式会社デンソー | 消音装置 |
DE19922216A1 (de) * | 1999-05-14 | 2000-11-30 | Mahle Filtersysteme Gmbh | Schallübertragungsvorrichtung für ein Kraftfahrzeug |
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-
2001
- 2001-03-23 DE DE10114397A patent/DE10114397A1/de not_active Withdrawn
-
2002
- 2002-03-22 WO PCT/DE2002/001045 patent/WO2002077969A1/de active IP Right Grant
- 2002-03-22 US US10/472,710 patent/US6848410B2/en not_active Expired - Lifetime
- 2002-03-22 ES ES02724120T patent/ES2246397T3/es not_active Expired - Lifetime
- 2002-03-22 DE DE50203827T patent/DE50203827D1/de not_active Expired - Lifetime
- 2002-03-22 EP EP02724120A patent/EP1371056B2/de not_active Expired - Lifetime
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DE19754840C2 (de) * | 1997-12-10 | 2001-01-18 | Mahle Filtersysteme Gmbh | Schalldämpferanordnung, insbesondere Ansaug-Schalldämpferanordnung |
DE10042012B4 (de) * | 1999-11-22 | 2004-08-19 | Daimlerchrysler Ag | Vorrichtung zur Geräuschgestaltung bei einem Kraftfahrzeug |
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Also Published As
Publication number | Publication date |
---|---|
ES2246397T3 (es) | 2006-02-16 |
US20040094112A1 (en) | 2004-05-20 |
EP1371056A1 (de) | 2003-12-17 |
US6848410B2 (en) | 2005-02-01 |
DE10114397A1 (de) | 2002-09-26 |
DE50203827D1 (de) | 2005-09-08 |
WO2002077969A1 (de) | 2002-10-03 |
EP1371056B2 (de) | 2008-06-18 |
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