EP3481081A1 - Exhaust finisher with sound wave source - Google Patents

Exhaust finisher with sound wave source Download PDF

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Publication number
EP3481081A1
EP3481081A1 EP18203237.5A EP18203237A EP3481081A1 EP 3481081 A1 EP3481081 A1 EP 3481081A1 EP 18203237 A EP18203237 A EP 18203237A EP 3481081 A1 EP3481081 A1 EP 3481081A1
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EP
European Patent Office
Prior art keywords
exhaust
sound
panel
sound generating
cover
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Granted
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EP18203237.5A
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German (de)
French (fr)
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EP3481081B1 (en
Inventor
Frank Lorenz
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Cisma Solutions ApS
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Cisma Solutions ApS
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Publication of EP3481081A1 publication Critical patent/EP3481081A1/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
    • F01N1/065—Silencing apparatus characterised by method of silencing by using interference effect by using an active noise source, e.g. speakers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
    • F01N2560/12—Other sensor principles, e.g. using electro conductivity of substrate or radio frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

Definitions

  • the invention relates to an exhaust panel with a sound source for a motor vehicle.
  • the invention further relates to an exhaust system with such an exhaust panel.
  • the invention further relates to the provision of a method for sound emission with such an exhaust panel.
  • the exhaust cover according to the invention for a motor vehicle has a tubular inner insert. It is characterized in that it is equipped with a controllable sound generating device for sound output from the exhaust panel.
  • Sounds or sound waves can advantageously be brought about by a sound generating device in addition to the sounds which are generated by the motor vehicle itself during its use.
  • acoustic effects can be produced, for example, to increase road safety, including in the form of warning signals.
  • the sound generating device is particularly preferably designed in the form of a loudspeaker diaphragm.
  • different acoustic signals can be used, so that individual vehicles based on these signals can be distinguished.
  • the sound or "sound" of a motor can be amplified.
  • the exhaust panel of the inner insert is designed in the form of a sound body for sound output.
  • the sounds generated by the sound generating device can then be directed into the indoor use and amplified and / or focused there.
  • tones may be generated by the inner liner and optionally other acoustic means, such as further amplifiers, which are deep compared to noises generated by the automotive vehicle during its use.
  • the temperature at the loudspeaker, the inner insert and the further acoustic means can hereby be maintained by air currents in a range which is appropriate for the functioning of the loudspeaker and the acoustic means.
  • the inner insert has a recess, in particular in the form of a through-hole, in which the sound generating device is arranged. Then the sound generated by the sound generating device can be passed directly into the indoor use.
  • the exhaust panel for direct or indirect power supply of the sound generating device comprises a battery and / or an accumulator. In this way, an independent supply of the sound generating device can be ensured with electrical energy.
  • the exhaust panel for direct or indirect power supply of the sound generating means comprises a converter for the conversion of heat in electrical voltage, in particular in the form of a piezoelectric element.
  • the heat generated in the motor vehicle during its use for example exhaust gas heat, can be used to provide electrical energy for the sound generating device.
  • the exhaust cover on a control unit for driving the sound generating means wherein the control unit preferably comprises a digital playback device. Then sounds generated by the sound generating device can be selectively selected and stored in advance.
  • control unit can be controlled by a radio-remote connection, in particular via WLAN.
  • the sounds generated by the sound generating means may be sent from outside the exhaust panel and / or the motor vehicle, or may be downloaded from a user from an external data source.
  • the exhaust panel has a vibration sensor, in particular on the inner insert.
  • the sounds or the sound can be adjusted depending on the vibration of the indoor use. This vibration can cause a coupling of the generated sound to the speed of the motor vehicle.
  • the exhaust cover in particular on the inner insert, a gas flow sensor.
  • the gas flow sensor can be designed for air mass measurement and / or for air volume measurement.
  • the sounds or the sound can be adjusted depending on the exhaust flow through the exhaust panel.
  • the flow or volume flow of the Exhaust gases from the engine can cause a coupling of the generated sound to the speed of the motor vehicle.
  • An exhaust system has an exhaust pipe and a exhaust pipe mounted on the exhaust pipe according to the invention.
  • an exhaust system of a motor vehicle may cause controlled acoustic effects in addition to the noise generated during use of the vehicle.
  • the sound of the engine of a motor vehicle can be amplified and / or modified.
  • other road users can be warned against acceleration or deceleration of the motor vehicle.
  • the emitted tones can be customized for individual vehicles.
  • a method for sound emission at an exhaust panel sound is emitted at this exhaust panel via a controlled sound generation device.
  • the method preferably amplifies and / or modifies the sound of the engine of a motor vehicle.
  • traffic safety can be increased if a motor vehicle, which has such a sound generating device accelerates or decelerates.
  • Fig. 1 a longitudinal section through a motor vehicle 10 with an exhaust system 12 is shown.
  • the exhaust system 12 has an exhaust pipe 14 .
  • the motor vehicle 10 is further equipped with a motor 16 .
  • a fluidic connection 18 is arranged, through which exhaust gases from the engine 16 to the exhaust system 12 can flow.
  • Fig. 2a shows a front view of an exhaust panel 20 according to the invention , which on the exhaust pipe 14 (see Fig. 1 ) can be mounted.
  • the exhaust cover 20 has an outer tube 22 for protection and or for decorating the exhaust pipe 14.
  • the exhaust panel 20 further includes an inner insert 24 for sound emission, which is disposed within the outer tube 22 and has the shape of a tube.
  • Fig. 2b shows a longitudinal section of the exhaust panel 20, according to the Fig. 2a shown line A-A '.
  • the inner insert 24 is pushed onto the exhaust pipe 14 for mounting the exhaust panel 20. It is fixed to the exhaust pipe 14 with a clamp 26 .
  • the inner insert 24 has a first through-passage 28 .
  • a sound generating device 30 is arranged, which is in particular controllable.
  • the sound generating device 30 serves to generate sounds or sound waves, which can move through the inner insert 24 designed as a sound body and can be focused and / or amplified there.
  • the inner insert 24 has a second passage recess 32 .
  • a gas flow sensor 34 is arranged in this second passage recess 32 .
  • the gas flow sensor 34 may measure the flow of exhaust through the exhaust panel 20.
  • the generation of sound by the sound generating device 30 can be effected as a function of this exhaust gas flow. In particular, the sound can be amplified when the exhaust gas flow is increased.
  • a vibration sensor 36 for measuring the vibration of the inner insert 24 is arranged on the inner insert 24, a vibration sensor 36 for measuring the vibration of the inner insert 24 is arranged.
  • the vibration sensor 36 is disposed on a portion 38 of the inner liner 24 which abuts the exhaust pipe 14, wherein the vibration sensor 36 is preferably positioned at this portion 38 in the radial direction opposite the exhaust pipe 14.
  • the generation of sound by the sound generating device 30 can be effected in dependence on the vibration of the inner insert 24. In particular, the sound can be amplified when the vibration is increased.
  • a battery 40 is attached on the outer tube 22 of the exhaust panel 20, a battery 40 is attached.
  • the battery 40 serves, in particular, for the power supply of the sound generating device 30.
  • a control unit 42 fastened to the outer pipe 22 of the exhaust panel 20, it is possible in particular to control the sound generating device 30.
  • the control unit 42 preferably has a digital playback device. Then, the sounds can be adjusted, which are generated by the sound generating device 30.
  • the control unit 42 for this purpose on a radio-remote connection and is in particular controlled by WLAN.
  • Fig. 3 is a method 100 for sound emission of an exhaust panel shown schematically.
  • a step 102 sound is emitted at the exhaust panel 20 via a controlled sound generating device 30.
  • the invention in summary relates to an exhaust cover 20 for a motor vehicle 10 having an inner insert 24, which has the shape of a tube.
  • the exhaust panel 20 is preferably by a Sound generating device 30 for generating and emitting sound characterized, which forms part of the exhaust panel 20 and is controllable.

Abstract

Die Erfindung betrifft eine Auspuffblende (20) für ein Kraftfahrzeug mit einem Inneneinsatz (24), welcher die Form eines Rohres aufweist. Die Auspuffblende (20) ist vorzugsweise durch eine Lautsprechermembran (30) zur Erzeugung und Abgabe von Schall gekennzeichnet, welche einen Teil der Auspuffblende (20) bildet und ansteuerbar ist.The invention relates to an exhaust cover (20) for a motor vehicle with an inner insert (24), which has the shape of a tube. The exhaust panel (20) is preferably characterized by a loudspeaker diaphragm (30) for generating and emitting sound, which forms part of the exhaust panel (20) and is controllable.

Description

Technisches GebietTechnical area

Die Erfindung betrifft eine Auspuffblende mit einer Schallquelle für ein Kraftfahrzeug. Die Erfindung betrifft ferner eine Auspuffanlage mit einer solchen Auspuffblende. Die Erfindung betrifft weiterhin die Bereitstellung eines Verfahrens zur Schallabgabe mit einer solchen Auspuffblende.The invention relates to an exhaust panel with a sound source for a motor vehicle. The invention further relates to an exhaust system with such an exhaust panel. The invention further relates to the provision of a method for sound emission with such an exhaust panel.

Stand der TechnikState of the art

Es ist aus dem Stand der Technik bekannt, Auspuffblenden zum Schutz und zur Verzierung von Auspuffrohren von Kraftfahrzeugen zu verwenden, wie unter anderem in der DE 10 2004 038 782 A1 und DE 10 2014 208 722 A1 angeführt ist.It is known from the prior art to use exhaust panels for the protection and decoration of exhaust pipes of motor vehicles, as inter alia in the DE 10 2004 038 782 A1 and DE 10 2014 208 722 A1 is cited.

Bei den aus dem Stand der Technik bekannten Auspuffblenden treten keine kontrolliert unterscheidbaren akustischen Effekte zusätzlich zu denen auf, welche durch das Kraftfahrzeug bei dessen Gebrauch erzeugt werden, wie zum Beispiel Motorgeräusche.In the exhaust fins known from the prior art, no audibly distinguishable acoustic effects occur in addition to those generated by the motor vehicle in its use, such as engine noise.

Es ist daher Aufgabe der Erfindung, eine Auspuffblende bereitzustellen, mit welcher solche zusätzlichen akustischen Effekte kontrolliert erzeugt werden können, zum Beispiel Warnsignale für andere Verkehrsteilnehmer bei Beschleunigung oder Abbremsung des Kraftfahrzeugs oder Erkennungssignale für ein individuelles Kraftfahrzeug, z.B. ein motorspezifischer Sound. Es ist ferner Aufgabe der Erfindung, eine Auspuffanlage mit einer solchen Auspuffblende bereitzustellen. Es ist weiter Aufgabe der Erfindung, ein Verfahren zur Schallabgabe mit einer solchen Auspuffblende anzugeben.It is therefore an object of the invention to provide an exhaust panel, with which such additional acoustic effects can be generated in a controlled manner, for example warning signals for other road users when accelerating or decelerating the motor vehicle or detection signals for an individual motor vehicle, e.g. a engine-specific sound. It is a further object of the invention to provide an exhaust system with such an exhaust panel. It is a further object of the invention to provide a method for sound emission with such an exhaust panel.

Die Aufgabe wird durch eine Auspuffblende gemäß Anspruch 1 gelöst. Die erfindungsgemäße Auspuffanlage weist die in Anspruch 10 angegebenen Merkmale auf. Die Merkmale des erfindungsgemäßen Verfahrens sind in Anspruch 11 angegeben. Vorteilhafte Ausgestaltungen ergeben sich aus den jeweils rückbezogenen Unteransprüchen.The object is achieved by an exhaust panel according to claim 1. The exhaust system according to the invention has the features specified in claim 10. The features of the method according to the invention are specified in claim 11. Advantageous embodiments will be apparent from the respective dependent claims.

Offenbarung der ErfindungDisclosure of the invention

Die erfindungsgemäße Auspuffblende für ein Kraftfahrzeug weist einen röhrenförmigen Inneneinsatz auf. Sie ist dadurch gekennzeichnet, dass sie mit einer ansteuerbaren Schallerzeugungseinrichtung zur Schallabgabe aus der Auspuffblende ausgestattet ist.The exhaust cover according to the invention for a motor vehicle has a tubular inner insert. It is characterized in that it is equipped with a controllable sound generating device for sound output from the exhaust panel.

Vorteilhaft lassen sich durch eine Schallerzeugungseinrichtung Töne bzw. Schallwellen kontrolliert zusätzlich zu den Geräuschen bewirken, welche von dem Kraftfahrzeug selber während dessen Gebrauch erzeugt werden. Dadurch können akustische Effekte zum Beispiel zu einer Erhöhung der Sicherheit im Straßenverkehr hervorgebracht werden, unter anderem in Form von Warnsignalen. Die Schallerzeugungseinrichtung ist besonders bevorzugt in Form einer Lautsprechermembran ausgebildet. Für verschiedene Kraftfahrzeuge können verschiedene akustische Signale verwendet werden, sodass einzelne Kraftfahrzeuge anhand dieser Signale unterschieden werden können. Weiterhin kann der Klang bzw. "Sound" eines Motors verstärkt werden.Sounds or sound waves can advantageously be brought about by a sound generating device in addition to the sounds which are generated by the motor vehicle itself during its use. As a result, acoustic effects can be produced, for example, to increase road safety, including in the form of warning signals. The sound generating device is particularly preferably designed in the form of a loudspeaker diaphragm. For different motor vehicles, different acoustic signals can be used, so that individual vehicles based on these signals can be distinguished. Furthermore, the sound or "sound" of a motor can be amplified.

Bei einer vorteilhaften Ausgestaltung der Auspuffblende ist der Inneneinsatz in Form eines Klangkörpers zur Schallabgabe ausgebildet. Die von der Schallerzeugungseinrichtung erzeugten Töne können dann in den Inneneinsatz geleitet und dort verstärkt und/oder fokussiert werden. Insbesondere können durch den Inneneinsatz und gegebenenfalls andere akustische Mittel wie weitere Verstärker Töne erzeugt werden, welche tief sind im Vergleich zu Geräuschen, welche das Kraftfahrzeug bei dessen Gebrauch erzeugt. Die Temperatur am Lautsprecher, dem Innneneinsatz und den weiteren akustischen Mitteln kann hierbei durch Luftströme in einem zum Funktionieren des Lautsprechers und der akustischen Mittel angemessenen Bereich gehalten werden.In an advantageous embodiment of the exhaust panel of the inner insert is designed in the form of a sound body for sound output. The sounds generated by the sound generating device can then be directed into the indoor use and amplified and / or focused there. In particular, tones may be generated by the inner liner and optionally other acoustic means, such as further amplifiers, which are deep compared to noises generated by the automotive vehicle during its use. The temperature at the loudspeaker, the inner insert and the further acoustic means can hereby be maintained by air currents in a range which is appropriate for the functioning of the loudspeaker and the acoustic means.

Vorteilhaft weist der Inneneinsatz eine Ausnehmung auf, insbesondere in Form einer Durchgangsausnehmung, in der die Schallerzeugungseinrichtung angeordnet ist. Dann kann der von der Schallerzeugungseinrichtung erzeugte Schall unmittelbar in den Inneneinsatz geleitet werden.Advantageously, the inner insert has a recess, in particular in the form of a through-hole, in which the sound generating device is arranged. Then the sound generated by the sound generating device can be passed directly into the indoor use.

In einer weiteren Ausgestaltung weist die Auspuffblende zur mittelbaren oder unmittelbaren Spannungsversorgung der Schallerzeugungseinrichtung eine Batterie und/oder einen Akkumulator auf. Hierdurch kann eine unabhängige Versorgung der Schallerzeugungseinrichtung mit elektrischer Energie sichergestellt werden.In a further embodiment, the exhaust panel for direct or indirect power supply of the sound generating device comprises a battery and / or an accumulator. In this way, an independent supply of the sound generating device can be ensured with electrical energy.

Bei einer weiteren Ausführungsform weist die Auspuffblende zur mittelbaren oder unmittelbaren Spannungsversorgung der Schallerzeugungseinrichtung einen Wandler zur Umwandlung von Wärme in elektrische Spannung auf, insbesondere in Form eines Piezoelements. Hierdurch kann die im Kraftfahrzeug während dessen Benutzung entstehende Wärme, zum Beispiel Abgaswärme, zur Bereitstellung elektrischer Energie für die Schallerzeugungseinrichtung verwendet werden.In another embodiment, the exhaust panel for direct or indirect power supply of the sound generating means comprises a converter for the conversion of heat in electrical voltage, in particular in the form of a piezoelectric element. As a result, the heat generated in the motor vehicle during its use, for example exhaust gas heat, can be used to provide electrical energy for the sound generating device.

Vorteilhaft weist die Auspuffblende eine Steuereinheit zum Ansteuern der Schallerzeugungseinrichtung auf, wobei die Steuereinheit vorzugsweise ein digitales Abspielgerät aufweist. Dann können durch die Schallerzeugungseinrichtung erzeugte Töne gezielt vorab ausgewählt und gespeichert werden.Advantageously, the exhaust cover on a control unit for driving the sound generating means, wherein the control unit preferably comprises a digital playback device. Then sounds generated by the sound generating device can be selectively selected and stored in advance.

In einer vorteilhaften Ausgestaltung ist die Steuereinheit durch eine Funk-Fern-Verbindung, insbesondere per WLAN, ansteuerbar. Dann können die Töne, welche durch die Schallerzeugungseinrichtung erzeugt werden, von außerhalb der Auspuffblende und/oder des Kraftfahrzeugs gesendet werden bzw. von einem Nutzer von einer äußeren Datenquelle heruntergeladen werden.In an advantageous embodiment, the control unit can be controlled by a radio-remote connection, in particular via WLAN. Then, the sounds generated by the sound generating means may be sent from outside the exhaust panel and / or the motor vehicle, or may be downloaded from a user from an external data source.

Bei einer weiteren Ausführungsform weist die Auspuffblende einen Vibrationssensor auf, insbesondere am Inneneinsatz. Dadurch lassen sich die Töne bzw. der Schall in Abhängigkeit von der Vibration des Inneneinsatzes einstellen. Durch diese Vibration lässt sich eine Kopplung des erzeugten Schalls an die Geschwindigkeit des Kraftfahrzeugs bewirken.In a further embodiment, the exhaust panel has a vibration sensor, in particular on the inner insert. As a result, the sounds or the sound can be adjusted depending on the vibration of the indoor use. This vibration can cause a coupling of the generated sound to the speed of the motor vehicle.

Vorteilhaft weist die Auspuffblende, insbesondere am Inneneinsatz, einen Gasflusssensor auf. Der Gasflusssensor kann zur Luftmassenmessung und/oder zur Luftvolumenmessung ausgebildet sein. Dadurch lassen sich die Töne bzw. der Schall in Abhängigkeit von dem Abgasfluss durch die Auspuffblende einstellen. Auch durch den Fluss bzw. Volumenstrom des Abgases aus dem Motor lässt sich eine Kopplung des erzeugten Schalls an die Geschwindigkeit des Kraftfahrzeugs bewirken.Advantageously, the exhaust cover, in particular on the inner insert, a gas flow sensor. The gas flow sensor can be designed for air mass measurement and / or for air volume measurement. As a result, the sounds or the sound can be adjusted depending on the exhaust flow through the exhaust panel. Also by the flow or volume flow of the Exhaust gases from the engine can cause a coupling of the generated sound to the speed of the motor vehicle.

Eine Auspuffanlage weist ein Auspuffrohr und eine an das Auspuffrohr montierte erfindungsgemäße Auspuffblende auf. Vorteilhaft kann eine solche Auspuffanlage eines Kraftfahrzeugs kontrolliert akustische Effekte zusätzlich zu den bei Gebrauch des Fahrzeugs erzeugten Geräuschen bewirken. Der Klang des Motors eines Kraftfahrzeugs kann verstärkt und/oder modifiziert werden. Hierdurch können zum Beispiel andere Verkehrsteilnehmer vor einer Beschleunigung oder Abbremsung des Kraftfahrzeugs gewarnt werden. Die abgegebenen Töne können für einzelne Kraftfahrzeuge individuell gestaltet werden.An exhaust system has an exhaust pipe and a exhaust pipe mounted on the exhaust pipe according to the invention. Advantageously, such an exhaust system of a motor vehicle may cause controlled acoustic effects in addition to the noise generated during use of the vehicle. The sound of the engine of a motor vehicle can be amplified and / or modified. As a result, for example, other road users can be warned against acceleration or deceleration of the motor vehicle. The emitted tones can be customized for individual vehicles.

Bei einem Verfahren zur Schallabgabe an einer Auspuffblende wird an dieser Auspuffblende über eine angesteuerte Schallerzeugungseinrichtung Schall abgegeben. Mit dem Verfahren wird vorzugsweise der Klang des Motors eines Kraftfahrzeugs verstärkt und/oder modifiziert. Durch von der Schallerzeugungseinrichtung abgegebene akustische Signale kann die Verkehrssicherheit erhöht werden, wenn ein Kraftfahrzeug, welches über eine solche Schallerzeugungseinrichtung verfügt, beschleunigt oder abbremst.In a method for sound emission at an exhaust panel, sound is emitted at this exhaust panel via a controlled sound generation device. The method preferably amplifies and / or modifies the sound of the engine of a motor vehicle. By emitted from the sound generating device acoustic signals traffic safety can be increased if a motor vehicle, which has such a sound generating device accelerates or decelerates.

Bei einer vorteilhaften Ausgestaltung des Verfahrens erfolgt die Schallabgabe in Abhängigkeit von

  1. a) einer gemessenen Schwingung der Auspuffblende und/oder eines Teils der Auspuffblende; und/oder
  2. b) in Abhängigkeit von einem gemessenen Abgasfluss durch die Auspuffblende.
In an advantageous embodiment of the method, the sound output is dependent on
  1. a) a measured vibration of the exhaust baffle and / or a part of the exhaust baffle; and or
  2. b) depending on a measured exhaust flow through the exhaust cover.

Vorteilhaft kann auf diese Weise die Schallabgabe an die Erhöhung bzw. Absenkung der Vibrationen der Auspuffblende und/oder des Abgasflusses und damit mittelbar an die Geschwindigkeit des Kraftfahrzeugs gekoppelt werden.Advantageously, in this way the sound output to the increase or decrease in the vibrations of the exhaust cover and / or the exhaust gas flow and thus be indirectly coupled to the speed of the motor vehicle.

Kurze Beschreibung der ZeichnungShort description of the drawing

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden detaillierten Beschreibung eines Ausführungsbeispiels der Erfindung, aus den Patentansprüchen sowie anhand der Figuren der Zeichnung, die erfindungswesentliche Einzelheiten zeigt. Die verschiedenen Merkmale können je einzeln für sich oder zu mehreren in beliebigen Kombinationen bei Varianten der Erfindung verwirklicht sein. Die in der Zeichnung gezeigten Merkmale sind derart dargestellt, dass die erfindungsgemäßen Besonderheiten deutlich sichtbar gemacht werden können.Further features and advantages of the invention will become apparent from the following detailed description of an embodiment of the invention, from the claims and with reference to the figures of the drawing, which shows essential to the invention details. The various features may be implemented individually for themselves or for a plurality of combinations in variants of the invention. The features shown in the drawing are shown such that the features of the invention can be made clearly visible.

In der Zeichnung zeigen:

Fig. 1
einen schematischen Längsschnitt durch ein Kraftfahrzeug mit einer Auspuffanlage;
Fig. 2a
eine Vorderansicht der erfindungsgemäßen Auspuffblende;
Fig. 2b
einen Längsschnitt der Auspuffblende gemäß der Linie A-A' in Fig. 2a; und
Fig. 3
eine schematisierte Darstellung eines Verfahrens zur Schallabgabe an einer Auspuffblende.
In the drawing show:
Fig. 1
a schematic longitudinal section through a motor vehicle with an exhaust system;
Fig. 2a
a front view of the exhaust panel according to the invention;
Fig. 2b
a longitudinal section of the exhaust cover according to the line AA 'in Fig. 2a ; and
Fig. 3
a schematic representation of a method for sound emission at an exhaust panel.

Ausführungsformen der ErfindungEmbodiments of the invention

In Fig. 1 ist ein Längsschnitt durch ein Kraftfahrzeug 10 mit einer Auspuffanlage 12 gezeigt. Die Auspuffanlage 12 weist ein Auspuffrohr 14 auf. Das Kraftfahrzeug 10 ist ferner mit einem Motor 16 ausgestattet. Zwischen dem Motor 16 und der Auspuffanlage 12 ist eine fluidische Verbindung 18 angeordnet, durch welche Abgase von dem Motor 16 zu der Auspuffanlage 12 strömen können.In Fig. 1 a longitudinal section through a motor vehicle 10 with an exhaust system 12 is shown. The exhaust system 12 has an exhaust pipe 14 . The motor vehicle 10 is further equipped with a motor 16 . Between the engine 16 and the exhaust system 12, a fluidic connection 18 is arranged, through which exhaust gases from the engine 16 to the exhaust system 12 can flow.

Fig. 2a zeigt eine Vorderansicht einer erfindungsgemäßen Auspuffblende 20, welche an dem Auspuffrohr 14 (siehe Fig. 1) montiert werden kann. Die Auspuffblende 20 weist ein Außenrohr 22 zum Schutz und oder zur Verzierung des Auspuffrohrs 14 auf. Die Auspuffblende 20 weist ferner einen Inneneinsatz 24 zur Schallabgabe auf, welcher innerhalb des Außenrohrs 22 angeordnet ist und die Form einer Röhre hat. Fig. 2a shows a front view of an exhaust panel 20 according to the invention , which on the exhaust pipe 14 (see Fig. 1 ) can be mounted. The exhaust cover 20 has an outer tube 22 for protection and or for decorating the exhaust pipe 14. The exhaust panel 20 further includes an inner insert 24 for sound emission, which is disposed within the outer tube 22 and has the shape of a tube.

Fig. 2b zeigt einen Längsschnitt der Auspuffblende 20, gemäß der Fig. 2a gezeigte Linie A-A'. Der Inneneinsatz 24 ist zur Montage der Auspuffblende 20 auf das Auspuffrohr 14 aufgeschoben. Er ist mit einer Klammer 26 an dem Auspuffrohr 14 fixiert. Fig. 2b shows a longitudinal section of the exhaust panel 20, according to the Fig. 2a shown line A-A '. The inner insert 24 is pushed onto the exhaust pipe 14 for mounting the exhaust panel 20. It is fixed to the exhaust pipe 14 with a clamp 26 .

Der Inneneinsatz 24 weist eine erste Durchgangsausnehmung 28 auf. In der ersten Durchgangsausnehmung 28 ist eine Schallerzeugungseinrichtung 30 angeordnet, welche insbesondere ansteuerbar ist. Die Schallerzeugungseinrichtung 30 dient der Erzeugung von Tönen bzw. Schallwellen, welche sich durch den als Klangkörper ausgebildeten Inneneinsatz 24 bewegen und dort fokussiert und/oder verstärkt werden können.The inner insert 24 has a first through-passage 28 . In the first through-hole 28, a sound generating device 30 is arranged, which is in particular controllable. The sound generating device 30 serves to generate sounds or sound waves, which can move through the inner insert 24 designed as a sound body and can be focused and / or amplified there.

Ferner weist der Inneneinsatz 24 eine zweite Durchgangsausnehmung 32 auf. In dieser zweiten Durchgangsausnehmung 32 ist ein Gasflusssensor 34 angeordnet. Der Gasflusssensor 34 kann den Abgasfluss durch die Auspuffblende 20 messen. Die Erzeugung von Schall durch die Schallerzeugungseinrichtung 30 kann in Abhängigkeit von diesem Abgasfluss erfolgen. Insbesondere kann der Schall verstärkt werden, wenn der Abgasfluss erhöht wird.Furthermore, the inner insert 24 has a second passage recess 32 . In this second passage recess 32, a gas flow sensor 34 is arranged. The gas flow sensor 34 may measure the flow of exhaust through the exhaust panel 20. The generation of sound by the sound generating device 30 can be effected as a function of this exhaust gas flow. In particular, the sound can be amplified when the exhaust gas flow is increased.

An dem Inneneinsatz 24 ist ein Vibrationssensor 36 zur Messung der Vibration des Inneneinsatzes 24 angeordnet. Der Vibrationssensor 36 ist an einem Abschnitt 38 des Inneneinsatzes 24 angeordnet, welcher an dem Auspuffrohr 14 anliegt, wobei der Vibrationssensor 36 vorzugsweise an diesem Abschnitt 38 in radialer Richtung dem Auspuffrohr 14 gegenüberliegend positioniert ist. Die Erzeugung von Schall durch die Schallerzeugungseinrichtung 30 kann in Abhängigkeit von der Vibration des Inneneinsatzes 24 erfolgen. Insbesondere kann der Schall verstärkt werden, wenn die Vibration erhöht wird.On the inner insert 24, a vibration sensor 36 for measuring the vibration of the inner insert 24 is arranged. The vibration sensor 36 is disposed on a portion 38 of the inner liner 24 which abuts the exhaust pipe 14, wherein the vibration sensor 36 is preferably positioned at this portion 38 in the radial direction opposite the exhaust pipe 14. The generation of sound by the sound generating device 30 can be effected in dependence on the vibration of the inner insert 24. In particular, the sound can be amplified when the vibration is increased.

An dem Außenrohr 22 der Auspuffblende 20 ist eine Batterie 40 befestigt. Die Batterie 40 dient insbesondere der Stromversorgung der Schallerzeugungseinrichtung 30. Durch eine an dem Außenrohr 22 der Auspuffblende 20 befestigte Steuereinheit 42 kann insbesondere die Schallerzeugungseinrichtung 30 angesteuert werden. Vorzugsweise weist die Steuereinheit 42 ein digitales Abspielgerät auf. Dann lassen sich die Töne einstellen, welche durch die Schallerzeugungseinrichtung 30 erzeugt werden. Alternativ oder zusätzlich dazu weist die Steuereinheit 42 zu diesem Zweck eine Funk-Fern-Verbindung auf und ist insbesondere per WLAN ansteuerbar.On the outer tube 22 of the exhaust panel 20, a battery 40 is attached. The battery 40 serves, in particular, for the power supply of the sound generating device 30. By means of a control unit 42 fastened to the outer pipe 22 of the exhaust panel 20, it is possible in particular to control the sound generating device 30. The control unit 42 preferably has a digital playback device. Then, the sounds can be adjusted, which are generated by the sound generating device 30. Alternatively or additionally, the control unit 42 for this purpose on a radio-remote connection and is in particular controlled by WLAN.

In Fig. 3 ist ein Verfahren 100 zur Schallabgabe einer Auspuffblende schematisiert dargestellt. In einem Schritt 102 wird an der Auspuffblende 20 über eine angesteuerte Schallerzeugungseinrichtung 30 Schall abgegeben.In Fig. 3 is a method 100 for sound emission of an exhaust panel shown schematically. In a step 102 , sound is emitted at the exhaust panel 20 via a controlled sound generating device 30.

Unter Vornahme einer Zusammenschau aller Figuren der Zeichnung betrifft die Erfindung zusammenfassend eine Auspuffblende 20 für ein Kraftfahrzeug 10 mit einem Inneneinsatz 24, welcher die Form eines Rohres aufweist. Die Auspuffblende 20 ist vorzugsweise durch eine Schallerzeugungseinrichtung 30 zur Erzeugung und Abgabe von Schall gekennzeichnet, welche einen Teil der Auspuffblende 20 bildet und ansteuerbar ist.Taking a synopsis of all the figures of the drawing, the invention in summary relates to an exhaust cover 20 for a motor vehicle 10 having an inner insert 24, which has the shape of a tube. The exhaust panel 20 is preferably by a Sound generating device 30 for generating and emitting sound characterized, which forms part of the exhaust panel 20 and is controllable.

Claims (12)

Auspuffblende (20) für ein Kraftfahrzeug (10), wobei die Auspuffblende (20) einen röhrenförmigen Inneneinsatz (24) aufweist,
dadurch gekennzeichnet,
dass die Auspuffblende (20) eine ansteuerbare Schallerzeugungseinrichtung (30), insbesondere in Form einer Lautsprechermembran, zur Schallabgabe aus der Auspuffblende (20) aufweist.Exhaust cover (20) for a motor vehicle (10), wherein the exhaust cover (20) has a tubular inner insert (24),
characterized,
that the exhaust aperture (20) comprises a controllable sound generating device (30), in particular in the form of a speaker diaphragm for sound output from the exhaust aperture (20). Auspuffblende nach Anspruch 1, bei der der Inneneinsatz (24) in Form eines Klangkörpers zur Schallabgabe ausgebildet ist.Exhaust baffle according to claim 1, wherein the inner insert (24) is designed in the form of a sound body for sound output. Auspuffblende nach Anspruch 2, bei der der Inneneinsatz (24) eine Ausnehmung (28), insbesondere in Form einer Durchgangsausnehmung, aufweist, in der die Schallerzeugungseinrichtung (30) angeordnet ist.Exhaust cover according to claim 2, wherein the inner insert (24) has a recess (28), in particular in the form of a passage recess, in which the sound generating means (30) is arranged. Auspuffblende nach einem der vorhergehenden Ansprüche, bei der die Auspuffblende (20) zur mittelbaren oder unmittelbaren Spannungsversorgung der Schallerzeugungseinrichtung (30) eine Batterie (40) und/oder einen Akkumulator aufweist.Exhaust baffle according to one of the preceding claims, wherein the exhaust panel (20) for direct or indirect power supply of the sound generating means (30) comprises a battery (40) and / or an accumulator. Auspuffblende nach einem der vorhergehenden Ansprüche, bei der die Auspuffblende (20) zur mittelbaren oder unmittelbaren Spannungsversorgung der Schallerzeugungseinrichtung einen Wandler, insbesondere in Form eines Piezoelements, zur Umwandlung von Wärme in elektrische Spannung aufweist.Exhaust cover according to one of the preceding claims, wherein the exhaust cover (20) for direct or indirect power supply of the sound generating means comprises a transducer, in particular in the form of a piezoelectric element, for converting heat into electrical voltage. Auspuffblende nach einem der vorhergehenden Ansprüche, bei der die Auspuffblende (20) eine Steuereinheit (42) zum Ansteuern der Schallerzeugungseinrichtung (30) aufweist, wobei die Steuereinheit (42) vorzugsweise ein digitales Abspielgerät aufweist.Exhaust baffle according to one of the preceding claims, in which the exhaust baffle (20) has a control unit (42) for activating the sound generating device (30), wherein the control unit (42) preferably comprises a digital playback device. Auspuffblende nach Anspruch 6, bei der die Steuereinheit (42) durch eine Funk-Fern-Verbindung, insbesondere per WLAN, ansteuerbar ist.Exhaust baffle according to claim 6, wherein the control unit (42) by a radio-remote connection, in particular via WLAN, is controllable. Auspuffblende nach Anspruch 6 oder 7, bei der die Auspuffblende (20), insbesondere am Inneneinsatz (24), einen Vibrationssensor (36) aufweist.Exhaust baffle according to claim 6 or 7, wherein the exhaust cover (20), in particular on the inner insert (24), a vibration sensor (36). Auspuffblende nach einem der Ansprüche 6 bis 8, bei der die Auspuffblende (20), insbesondere am Inneneinsatz (24), einen Gasflusssensor (34) aufweist.Exhaust baffle according to one of claims 6 to 8, wherein the exhaust baffle (20), in particular on the inner insert (24), a gas flow sensor (34). Auspuffanlage mit einem Auspuffrohr (14) und einer an das Auspuffrohr (14) montierten Auspuffblende (20) nach einem der Ansprüche 1 bis 9.Exhaust system comprising an exhaust pipe (14) and an exhaust baffle (20) according to any one of claims 1 to 9 mounted on the exhaust pipe (14). Verfahren zur Schallabgabe an einer Auspuffblende (20), insbesondere an einer Auspuffblende (20) nach einem der Ansprüche 1 bis 9, bei dem an der Auspuffblende (20) über eine angesteuerte Schallerzeugungseinrichtung (30) Schall abgegeben wird.Method for emitting sound at an exhaust panel (20), in particular at an exhaust panel (20) according to one of Claims 1 to 9, in which sound is emitted at the exhaust panel (20) via a controlled sound generating device (30). Verfahren nach Anspruch 11, bei dem die Schallabgabe in Abhängigkeit von a) einer gemessenen Schwingung der Auspuffblende (20) und/oder eines Teils (38) der Auspuffblende (20) erfolgt; und/oder b) in Abhängigkeit von einem gemessenen Abgasfluss durch die Auspuffblende (20) erfolgt. Method according to Claim 11, in which the sound output is dependent on a) a measured vibration of the exhaust cover (20) and / or a part (38) of the exhaust panel (20) takes place; and or b) takes place as a function of a measured exhaust gas flow through the exhaust cover (20).
EP18203237.5A 2017-11-03 2018-10-30 Exhaust finisher with sound wave source Active EP3481081B1 (en)

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