EP1172547B1 - Intake system for a vehicle - Google Patents

Intake system for a vehicle Download PDF

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Publication number
EP1172547B1
EP1172547B1 EP01115421A EP01115421A EP1172547B1 EP 1172547 B1 EP1172547 B1 EP 1172547B1 EP 01115421 A EP01115421 A EP 01115421A EP 01115421 A EP01115421 A EP 01115421A EP 1172547 B1 EP1172547 B1 EP 1172547B1
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EP
European Patent Office
Prior art keywords
additional opening
automotive vehicle
intake system
passenger compartment
vehicle according
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
Application number
EP01115421A
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German (de)
French (fr)
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EP1172547A3 (en
EP1172547A2 (en
Inventor
Matthias Alex
Mathias Schuster
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.)
Mann and Hummel GmbH
Original Assignee
Filterwerk Mann and Hummel GmbH
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Publication of EP1172547A2 publication Critical patent/EP1172547A2/en
Publication of EP1172547A3 publication Critical patent/EP1172547A3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/161—Arrangement of the air intake system in the engine compartment, e.g. with respect to the bonnet or the vehicle front face
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10013—Means upstream of the air filter; Connection to the ambient air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1205—Flow throttling or guiding
    • F02M35/1227—Flow throttling or guiding by using multiple air intake flow paths, e.g. bypass, honeycomb or pipes opening into an expansion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • F02M35/1266—Intake silencers ; Sound modulation, transmission or amplification using resonance comprising multiple chambers or compartments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1294—Amplifying, modulating, tuning or transmitting sound, e.g. directing sound to the passenger cabin; Sound modulation

Definitions

  • the invention relates to a motor vehicle with an intake system, which additionally has an additional opening to the suction opening for the combustion air, which via a branch communicates with the intake system, according to the genus of Claim 1.
  • the acoustic measure described is universal for damping noise emissions to be used in the intake or exhaust system.
  • the requirements to effectively influence the noise emissions of motor vehicles however, often more targeted measures than using broadband Damping effects.
  • DE 197 04 376 discloses an air filter arrangement for an internal combustion engine a motor vehicle.
  • the air filter arrangement is acoustically connected to a via a line Connected vehicle interior, which means that the driver even in low-noise Vehicles are informed about the operating state of the engine. Through the line the sound is transmitted directly to the vehicle interior.
  • the object of the invention is to provide a motor vehicle with an intake system To create internal combustion engine, with the help of the same intake noise can be influenced optimally. This object is achieved by the features of the claim 1 solved.
  • the intake system according to the invention is characterized in that the additional opening, which is attached to the junction, is aligned such that at installation of the intake system in the engine compartment of the internal combustion engine, the muzzle sound, which starts from the additional opening, primarily to stimulate the Passenger cell leads.
  • priority is meant that the arrangement of the additional opening is aimed at an acoustic effect that can be achieved in the passenger compartment.
  • the intake noise can be independent are influenced by the driving noise of the vehicle emitted into the environment.
  • acoustic effects can be achieved, which dampen the intake noise in the passenger compartment, e.g. B. lead by phase-shifted excitation can.
  • the muzzle sound of the additional opening can also be used to to influence the characteristics of the interior noise.
  • Combustion air can enter through the additional opening as through the intake opening Suction system.
  • An introduction in front of the air filter is therefore a good idea the combustion air drawn in through the additional opening is also filtered becomes.
  • the branch is also arranged in the clean air area of the intake system possible if the air sucked in through the additional opening is separate is cleaned.
  • the intake system can contain other components, their use in the intake tract the internal combustion engine is common.
  • a suction pipe and one Actuator e.g. B. to call a throttle valve.
  • the junction can also consist of several branches and also have several additional openings. These have different acoustic effects, which taken together lead to the desired sound pattern of the intake noise.
  • the acoustic devices can have no significant effect on the Intake behavior of the internal combustion engine can be arranged.
  • the suction characteristic is primarily determined by the intake system with the intake opening. Only a secondary air flow is transported through the branch, so that a change in the geometry to adapt the intake noise to the desired characteristic does not significantly affect. In particular, larger ones Avoid performance losses in the intake tract due to acoustic measures.
  • the branch can be made with the aid of a plug connection be attached to the intake system.
  • This enables better customization the intake system z. B. to different types of internal combustion engines.
  • the intake characteristic can be changed by changing the attached branch adapt to the individual case. Also customer requests, e.g. B. for a sportier Sound of the internal combustion engine can be made using different branches be taken into account.
  • Another variant of the invention proposes to construct the branch modularly.
  • the various modules have connection points, so that the Junction can be assembled. With a small number of identical parts can be created in this way a modular system, which in individual cases an optimal adaptation of the branch to the acoustic framework allows. If several additional openings are used, must these are not all geared towards giving priority to the passenger compartment become. Rather, additional acoustic effects can be used if they are different Have alignments.
  • the branch can be opened be installed in different ways in the engine compartment of the motor vehicle.
  • a The first possibility is to align the additional opening to a part of the Body, which enables good sound conduction to the passenger compartment.
  • the wheel arch of the front wheel, which is nearby should be mentioned of the intake system. Because of the sound conduction, this will be in the passenger compartment located volumes excited to vibrations, which with a suitable design the branch to the desired acoustic effects that result from the vehicle occupants are noticed.
  • Another option is to open the additional opening directly onto the partition between the passenger compartment and the engine compartment.
  • the muzzle sound of the additional opening then acts directly on this partition of the engine compartment, causing this is excited to vibrate, which is in the interior of the passenger compartment procreate.
  • the additional opening is also possible for the additional opening to align with a reflective surface. This is part of the engine compartment to understand and leads to a deflection of the muzzle sound in the direction the passenger compartment, whereby the acoustic effects mentioned are achieved.
  • the additional opening communicates directly or indirectly with the volume of the passenger compartment. It is advantageous here Connect the additional opening to the fresh air supply for the passenger compartment. This can e.g. B. via the duct system of ventilation or air conditioning. By the channel system becomes the muzzle sound emanating from the additional opening passed into the passenger compartment, which has the acoustic effects already described brings itself.
  • a motor vehicle with an engine compartment 10 and a passenger compartment 11 has an intake system 12, which supplies an internal combustion engine 13 with intake air.
  • the Intake system leads from an intake opening 14 for combustion air to the cylinder side Exits 15, which are attached to a cylinder head 16 of the internal combustion engine 13 are.
  • Various branches 17 branch off from the intake system 12, which have additional openings 18a to d are provided, so that combustion air through these additional openings can be sucked in.
  • the additional opening 18a is directed directly at a partition 19, which is the passenger compartment 11 separates from the engine compartment 10.
  • the one starting from the additional opening 18a Muzzle sound is symbolically represented by an arrow. This affects directly the partition, creating a sound transmission between the engine compartment and passenger compartment he follows. In this respect, the additional opening 18a directly affects that in the passenger compartment perceivable noise of the internal combustion engine.
  • the additional opening 18b is directed to a wheel arch 20.
  • the muzzle sound also indicated by an arrow, leads to a vibration excitation of the Wheel arch, which transmits the muzzle sound to the passenger compartment.
  • Another possibility is the alignment of the additional opening on a reflection surface 21.
  • This is in the exemplary embodiment by an underbody paneling formed on a front apron 22 of the motor vehicle.
  • the reflective surface Through the reflective surface the sound is reflected in the direction of the passenger compartment 11 (indicated by a corresponding arrow). This also reduces the noise in the passenger compartment influence.
  • a last possibility is to connect the additional opening 18d to one Fresh air supply 23 of the motor vehicle. Through ventilation slots 24 in the passenger compartment, but also by vibrating the duct system Fresh air supply 23, the mouth noise of the additional opening 18d in the Passenger cell transported.
  • the different orientations can be used to influence the intake noise the additional opening 18a to d provided individually, in groups or together become.
  • the overall effect on the intake noise prevailing in the passenger compartment must be determined experimentally. Here certain frequency ranges are canceled or their vibration characteristics are influenced in this way be less in the subjective perception of vehicle occupants attract attention.
  • a kit for a branch 17 which consists of modules is composed.
  • the modules have connection points 25, via which they communicate with each other.
  • the connection points are shown schematically.
  • the modules can be freely connected to one another combine.
  • Possible configurations of the modules are covers 30 for side openings 31, which, for. B. can be used to connect Lambda Virtel tubes, Resonance rooms 33 and line sections 34, which with additional openings 18a, b can be provided.

Abstract

Intake system for an internal combustion engine in a motor vehicle comprises at least one intake opening (14) and an outlet (15) on the cylinder side for the combustion air. A junction (17) with an additional opening (18a-d) is attached to the intake system, which communicates with the combustion air. The additional opening is oriented so that on incorporation of the intake system into an engine space (10) of the motor vehicle the noise radiated from it primarily excites the passenger compartment (11). An Independent claim is also included for a motor vehicle comprising an intake system built into the engine space. Preferred Features: The junction is fixed to the intake system using a socket connection.

Description

Stand der TechnikState of the art

Die Erfindung betrifft ein Kraftfahrzeug mit einem Ansaugsystem, welches zusätzlich zur Ansaugöffnung für die Verbrennungsluft eine Zusatzöffnung aufweist, welche über eine Abzweigung mit dem Ansaugsystem kommuniziert, nach der Gattung des Patentanspruches 1.The invention relates to a motor vehicle with an intake system, which additionally has an additional opening to the suction opening for the combustion air, which via a branch communicates with the intake system, according to the genus of Claim 1.

Ansaugsysteme bzw. Abgasanlagen der eingangs beschriebenen Art und deren Verwendung in Kraftfahrzeugen sind bekannt. Die US 3 396 812 zeigt ein Beispiel. In einem Abgastrakt 14 gemäß Figur 2 dieses Dokumentes ist ein Rohr 16 als Abzweigung vorgesehen, welches mit Hilfe einer Endkappe 18 verschlossen ist. Die Endkappe 18 weist weiterhin eine Bohrung 20 auf, welche mit der Umgebung kommuniziert. Durch diese Bohrung 20 wird die punktuell wirkende Dämpfung des Geräuschpegels durch das Rohr 16 auf einen größeren Frequenzbereich verteilt, wodurch insgesamt eine wirksamere Dämpfung des Geräuschpegels gelingt.Intake systems or exhaust systems of the type described above and their Use in motor vehicles is known. US 3,396,812 shows an example. In An exhaust tract 14 according to FIG. 2 of this document is a pipe 16 as a branch provided which is closed by means of an end cap 18. The end cap 18 furthermore has a bore 20 which communicates with the surroundings. Through this bore 20, the selective damping of the noise level distributed through the tube 16 over a larger frequency range, which makes overall more effective attenuation of the noise level is achieved.

Die beschriebene akustische Maßnahme ist universell zur Dämpfung der Geräuschemission im Ansaugtrakt oder Abgastrakt zu verwenden. Die Anforderungen an eine wirksame Beeinflussung der Geräuschemission von Kraftfahrzeugen erfordert jedoch häufig zielgerichtetere Maßnahmen als die Nutzung breitbandiger Dämpfungseffekte.The acoustic measure described is universal for damping noise emissions to be used in the intake or exhaust system. The requirements to effectively influence the noise emissions of motor vehicles however, often more targeted measures than using broadband Damping effects.

Die DE 197 04 376 offenbart eine Luftfilteranordnung für einen Verbrennungsmotor eines Kraftfahrzeugs. Die Luftfilteranordnung ist über eine Leitung akustisch mit einem Fahrzeuginnenraum verbunden, wodurch der Fahrer auch bei geräuscharmen Fahrzeugen über den Betriebszustand des Motors informiert wird. Durch die Leitung wird der Schall direkt auf den Fahrzeuginnenraum übertragen. DE 197 04 376 discloses an air filter arrangement for an internal combustion engine a motor vehicle. The air filter arrangement is acoustically connected to a via a line Connected vehicle interior, which means that the driver even in low-noise Vehicles are informed about the operating state of the engine. Through the line the sound is transmitted directly to the vehicle interior.

Aufgabe der Erfindung ist es, ein Kraftfahrzeug mit einem Ansaugsystem für eine Brennkraftmaschine zu schaffen, mit dessen Hilfe das Ansauggeräusch derselben optimal beeinflusst werden kann. Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. The object of the invention is to provide a motor vehicle with an intake system To create internal combustion engine, with the help of the same intake noise can be influenced optimally. This object is achieved by the features of the claim 1 solved.

Das erfindungsgemäße Ansaugsystem ist dadurch gekennzeichnet, dass die Zusatzöffnung, welche an der Abzweigung angebracht ist, derart ausgerichtet ist, dass bei einem Einbau des Ansaugsystems im Motorraum der Brennkraftmaschine der Mündungsschall, der von der Zusatzöffnung ausgeht, vorrangig zu einer Anregung der Fahrgastzelle führt. Mit vorrangig ist gemeint, dass die Anordnung der Zusatzöffnung auf einen akustischen Effekt ausgerichtet wird, der im Fahrgastraum zu erzielen ist. Durch eine Anregung des Fahrgastraumes kann das Ansauggeräusch unabhängig von dem in die Umwelt emittierten Fahrgeräusch des Fahrzeugs beeinflusst werden. Hierbei lassen sich akustische Effekte erzielen, die zu einer Dämpfung des Ansauggeräusches in der Fahrgastzelle, z. B. durch phasenverschobene Anregung, führen kann. Der Mündungsschall der Zusatzöffnung kann aber auch verwendet werden, um die Charakteristik des Innenraumgeräusches zu beeinflussen. Hierbei lassen sich Geräuschcharakteristiken erzielen, die durch die Fahrgäste des Kraftfahrzeuges als angenehmer empfunden werden, als die Geräuschcharakteristik ohne die beschriebene akustische Maßnahme.The intake system according to the invention is characterized in that the additional opening, which is attached to the junction, is aligned such that at installation of the intake system in the engine compartment of the internal combustion engine, the muzzle sound, which starts from the additional opening, primarily to stimulate the Passenger cell leads. By priority is meant that the arrangement of the additional opening is aimed at an acoustic effect that can be achieved in the passenger compartment. By stimulating the passenger compartment, the intake noise can be independent are influenced by the driving noise of the vehicle emitted into the environment. Here acoustic effects can be achieved, which dampen the intake noise in the passenger compartment, e.g. B. lead by phase-shifted excitation can. The muzzle sound of the additional opening can also be used to to influence the characteristics of the interior noise. Here you can Achieve noise characteristics caused by the passengers of the motor vehicle be felt more pleasant than the noise characteristics without the described acoustic measure.

Durch die Zusatzöffnung kann wie durch die Ansaugöffnung Verbrennungsluft in das Ansaugsystem gelangen. Sinnvoll ist daher eine Einleitung vor dem Luftfilter, wodurch die durch die Zusatzöffnung angesaugte Verbrennungsluft ebenfalls gefiltert wird. Eine Anordnung der Abzweigung ist jedoch auch im Reinluftbereich des Ansaugsystems möglich, wenn die durch die Zusatzöffnung angesaugte Luft gesondert gereinigt wird.Combustion air can enter through the additional opening as through the intake opening Suction system. An introduction in front of the air filter is therefore a good idea the combustion air drawn in through the additional opening is also filtered becomes. However, the branch is also arranged in the clean air area of the intake system possible if the air sucked in through the additional opening is separate is cleaned.

Das Ansaugsystem kann weitere Bauteile enthalten, deren Verwendung im Ansaugtrakt der Brennkraftmaschine üblich ist. Hier sind als Beispiele ein Saugrohr und eine Stelleinrichtung, z. B. eine Drosselklappe zu nennen. Außerdem kann die Abzweigung aus mehreren Zweigen bestehen und auch mehrere Zusatzöffnungen aufweisen. Diese bewirken für sich genommen verschiedene akustische Effekte, welche zusammen genommen zum gewünschten Klangbild des Ansauggeräusches führen.The intake system can contain other components, their use in the intake tract the internal combustion engine is common. Here are examples of a suction pipe and one Actuator, e.g. B. to call a throttle valve. The junction can also consist of several branches and also have several additional openings. These have different acoustic effects, which taken together lead to the desired sound pattern of the intake noise.

Dabei können die akustischen Einrichtungen ohne wesentliche Auswirkung auf das Ansaugverhalten der Brennkraftmaschine angeordnet werden. Die Ansaugcharakteristik wird in erster Linie durch das Ansaugsystem mit der Ansaugöffnung bestimmt. Durch die Abzweigung wird lediglich ein Nebenluftstrom transportiert, so dass sich eine Änderung der Geometrie zwecks Anpassung des Ansauggeräusches an die gewünschte Charakteristik nicht wesentlich auswirkt. Insbesondere lassen sich größere Leistungsverluste im Ansaugtrakt auf Grund akustischer Maßnahmen vermeiden.The acoustic devices can have no significant effect on the Intake behavior of the internal combustion engine can be arranged. The suction characteristic is primarily determined by the intake system with the intake opening. Only a secondary air flow is transported through the branch, so that a change in the geometry to adapt the intake noise to the desired characteristic does not significantly affect. In particular, larger ones Avoid performance losses in the intake tract due to acoustic measures.

Gemäß einer besonderen Ausgestaltung kann die Abzweigung mit Hilfe einer Steckverbindung am Ansaugsystem befestigt werden. Dies ermöglicht eine bessere Anpassung des Ansaugsystems z. B. an verschiedene Brennkraftmaschinentypen. Durch Auswechseln der aufgesteckten Abzweigung lässt sich die Ansaugcharakteristik an den Einzelfall anpassen. Auch Kundenwünsche, z. B. nach einem sportlicheren Sound der Brennkraftmaschine können mit Hilfe unterschiedlicher Abzweigungen berücksichtigt werden.According to a special embodiment, the branch can be made with the aid of a plug connection be attached to the intake system. This enables better customization the intake system z. B. to different types of internal combustion engines. The intake characteristic can be changed by changing the attached branch adapt to the individual case. Also customer requests, e.g. B. for a sportier Sound of the internal combustion engine can be made using different branches be taken into account.

Eine weitere Variante der Erfindung schlägt vor, die Abzweigung modular aufzubauen. Die verschiedenen Module weisen Verbindungsstellen auf, so dass aus ihnen die Abzweigung zusammengesetzt werden kann. Mit einer geringen Zahl an Gleichteilen kann auf diese Weise ein Baukastensystem geschaffen werden, welches im Einzelfall eine optimale Anpassung der Abzweigung an die akustischen Rahmenbedingungen ermöglicht. Sofern dabei mehrere Zusatzöffnungen zum Einsatz kommen, müssen diese nicht alle auf eine vorrangige Anregung der Fahrgastzelle hin ausgerichtet werden. Vielmehr lassen sich zusätzlich akustische Effekte nutzen, wenn diese unterschiedliche Ausrichtungen aufweisen.Another variant of the invention proposes to construct the branch modularly. The various modules have connection points, so that the Junction can be assembled. With a small number of identical parts can be created in this way a modular system, which in individual cases an optimal adaptation of the branch to the acoustic framework allows. If several additional openings are used, must these are not all geared towards giving priority to the passenger compartment become. Rather, additional acoustic effects can be used if they are different Have alignments.

Um die beschriebenen akustischen Effekte zu erzielen, kann die Abzweigung auf unterschiedliche Weise in den Motorraum des Kraftfahrzeugs eingebaut werden. Eine erste Möglichkeit besteht in der Ausrichtung der Zusatzöffnung auf einen Teil der Karosserie, welcher eine gute Schallleitung hin zur Fahrgastzelle ermöglicht. Als Beispiel hierfür ist der Radkasten des Vorderrades zu nennen, welcher sich in der Nähe des Ansaugsystems befindet. Aufgrund der Schallleitung wird das in der Fahrgastzelle befindliche Volumen zu Schwingungen angeregt, welche bei geeigneter Auslegung der Abzweigung zu den gewünschten akustischen Effekten führen, die durch die Fahrzeuginsassen wahrgenommen werden. To achieve the acoustic effects described, the branch can be opened be installed in different ways in the engine compartment of the motor vehicle. A The first possibility is to align the additional opening to a part of the Body, which enables good sound conduction to the passenger compartment. As an an example the wheel arch of the front wheel, which is nearby, should be mentioned of the intake system. Because of the sound conduction, this will be in the passenger compartment located volumes excited to vibrations, which with a suitable design the branch to the desired acoustic effects that result from the vehicle occupants are noticed.

Eine andere Möglichkeit besteht darin, die Zusatzöffnung direkt auf die Trennwand zwischen Fahrgastzelle und Motorraum auszurichten. Der Mündungsschall der Zusatzöffnung wirkt dann direkt auf diese Trennwand des Motorraums, wodurch diese zu Schwingungen angeregt wird, welche sich in den Innenraum der Fahrgastzelle fortpflanzen.Another option is to open the additional opening directly onto the partition between the passenger compartment and the engine compartment. The muzzle sound of the additional opening then acts directly on this partition of the engine compartment, causing this is excited to vibrate, which is in the interior of the passenger compartment procreate.

Es ist gemäß einer besonderen Ausgestaltung der Erfindung auch möglich, die Zusatzöffnung auf eine Reflektionsfläche hin auszurichten. Diese ist als Teil des Motorraums aufzufassen und führt zu einer Umlenkung des Mündungsschalls in Richtung der Fahrgastzelle, wodurch die genannten akustischen Effekte erzielt werden.According to a special embodiment of the invention, it is also possible for the additional opening to align with a reflective surface. This is part of the engine compartment to understand and leads to a deflection of the muzzle sound in the direction the passenger compartment, whereby the acoustic effects mentioned are achieved.

Gemäß einer anderen Ausgestaltung der Erfindung kommuniziert die Zusatzöffnung direkt oder indirekt mit dem Volumen der Fahrgastzelle. Vorteilhaft ist es dabei, die Zusatzöffnung an die Frischluftzuführung für die Fahrgastzelle anzuschließen. Dies kann z. B. über das Kanalsystem der Belüftung oder der Klimaanlage erfolgen. Durch das Kanalsystem wird der von der Zusatzöffnung ausgehende Mündungsschall direkt in die Fahrgastzelle geleitet, was die bereits beschriebenen akustischen Effekte mit sich bringt.According to another embodiment of the invention, the additional opening communicates directly or indirectly with the volume of the passenger compartment. It is advantageous here Connect the additional opening to the fresh air supply for the passenger compartment. This can e.g. B. via the duct system of ventilation or air conditioning. By the channel system becomes the muzzle sound emanating from the additional opening passed into the passenger compartment, which has the acoustic effects already described brings itself.

Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei der Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird.These and other features of preferred developments of the invention go not only from the claims but also from the description and the drawings, the individual features each individually or in groups in the form of sub-combinations in the embodiment of the invention and on others Areas to be realized and advantageous as well as protective designs can represent, for which protection is claimed here.

Zeichnungdrawing

Weitere Einzelheiten der Erfindung werden in den Zeichnungen anhand von schematischen Ausführungsbeispielen beschrieben. Hierbei zeigen

Figur 1
die Anordnung eines Ansaugsystems mit erfindungsgemäßen Abzweigungen in perspektivischer Darstellung und
Figur 2
ein Baukastensystem für die Abzweigung in perspektivischer Ansicht.
Further details of the invention are described in the drawings using schematic exemplary embodiments. Show here
Figure 1
the arrangement of an intake system with branches according to the invention in a perspective view and
Figure 2
a modular system for the junction in a perspective view.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Ein Kraftfahrzeug mit einem Motorraum 10 und einer Fahrgastzelle 11 besitzt ein Ansaugsystem 12, welches eine Brennkraftmaschine 13 mit Ansaugluft versorgt. Das Ansaugsystem führt von einer Ansaugöffnung 14 für Verbrennungsluft zu zylinderseitigen Austritten 15, die an einem Zylinderkopf 16 der Brennkraftmaschine 13 angebracht sind.A motor vehicle with an engine compartment 10 and a passenger compartment 11 has an intake system 12, which supplies an internal combustion engine 13 with intake air. The Intake system leads from an intake opening 14 for combustion air to the cylinder side Exits 15, which are attached to a cylinder head 16 of the internal combustion engine 13 are.

Vom Ansaugsystem 12 gehen verschiedene Abzweigungen 17 ab, die mit Zusatzöffnungen 18a bis d versehen sind, so dass Verbrennungsluft durch diese Zusatzöffnungen angesaugt werden kann.Various branches 17 branch off from the intake system 12, which have additional openings 18a to d are provided, so that combustion air through these additional openings can be sucked in.

Die Zusatzöffnung 18a ist direkt auf eine Trennwand 19 gerichtet, welche die Fahrgastzelle 11 vom Motorraum 10 abtrennt. Der von der Zusatzöffnung 18a ausgehende Mündungsschall ist durch eine Pfeil symbolisch dargestellt. Dieser wirkt direkt auf die Trennwand, wodurch eine Schallübertragung zwischen Motorraum und Fahrgastzelle erfolgt. Insofern beeinflusst die Zusatzöffnung 18a direkt das in der Fahrgastzelle wahrzunehmende Geräusch der Brennkraftmaschine.The additional opening 18a is directed directly at a partition 19, which is the passenger compartment 11 separates from the engine compartment 10. The one starting from the additional opening 18a Muzzle sound is symbolically represented by an arrow. This affects directly the partition, creating a sound transmission between the engine compartment and passenger compartment he follows. In this respect, the additional opening 18a directly affects that in the passenger compartment perceivable noise of the internal combustion engine.

Die Zusatzöffnung 18b ist auf einen Radkasten 20 gerichtet. Der Mündungsschall, ebenfalls durch einen Pfeil angedeutet, führt zu einer Schwingungsanregung des Radkastens, der damit den Mündungsschall auf die Fahrgastzelle überträgt.The additional opening 18b is directed to a wheel arch 20. The muzzle sound, also indicated by an arrow, leads to a vibration excitation of the Wheel arch, which transmits the muzzle sound to the passenger compartment.

Eine weitere Möglichkeit ist die Ausrichtung der Zusatzöffnung auf eine Reflektionsfläche 21. Diese wird im Ausführungsbeispiel durch eine Unterbodenverkleidung an einer Frontschürze 22 der Kraftfahrzeugs gebildet. Durch die Reflektionsfläche wird der Schall in Richtung der Fahrgastzelle 11 reflektiert (angedeutet durch einen entsprechenden Pfeil). Dadurch lässt sich das Geräusch in der Fahrgastzelle ebenfalls beeinflussen.Another possibility is the alignment of the additional opening on a reflection surface 21. This is in the exemplary embodiment by an underbody paneling formed on a front apron 22 of the motor vehicle. Through the reflective surface the sound is reflected in the direction of the passenger compartment 11 (indicated by a corresponding arrow). This also reduces the noise in the passenger compartment influence.

Eine letzte Möglichkeit besteht in einem Anschluss der Zusatzöffnung 18d an eine Frischluftzuführung 23 des Kraftfahrzeugs. Durch Lüftungsschlitze 24 im Fahrgastinnenraum, aber auch durch eine Schwingungsanregung des Kanalsystems der Frischluftzuführung 23 wird das Mündungsgeräusch der Zusatzöffnung 18d in die Fahrgastzelle transportiert.A last possibility is to connect the additional opening 18d to one Fresh air supply 23 of the motor vehicle. Through ventilation slots 24 in the passenger compartment, but also by vibrating the duct system Fresh air supply 23, the mouth noise of the additional opening 18d in the Passenger cell transported.

Zur Beeinflussung des Ansauggeräusches können die unterschiedlichen Ausrichtungen der Zusatzöffnung 18a bis d einzeln, in Gruppen oder zusammen vorgesehen werden. Die Gesamtwirkung auf das in der Fahrgastzelle vorherrschende Ansauggeräusch muss experimentell ermittelt werden. Hierbei können bestimmte Frequenzbereiche aufgehoben werden bzw. deren Schwingungscharakteristik derart beeinflusst werden, dass sie in der subjektiven Wahrnehmung der Fahrzeuginsassen weniger störend auffallen.The different orientations can be used to influence the intake noise the additional opening 18a to d provided individually, in groups or together become. The overall effect on the intake noise prevailing in the passenger compartment must be determined experimentally. Here certain frequency ranges are canceled or their vibration characteristics are influenced in this way be less in the subjective perception of vehicle occupants attract attention.

In Figur 2 ist ein Baukasten für eine Abzweigung 17 dargestellt, welche aus Modulen zusammengesetzt ist. Die Module weisen Verbindungsstellen 25 auf, über die sie miteinander kommunizieren. Die Verbindungsstellen sind schematisch dargestellt. Sie können z. B. als Steckverbindung 26 ausgebildet sein, wobei die Abzweigung z. B. eine Rastnase 27 aufweist, die in eine elastische Zunge 28 mit Aufnahme 29 für die Rastnase einrastet.In Figure 2, a kit for a branch 17 is shown, which consists of modules is composed. The modules have connection points 25, via which they communicate with each other. The connection points are shown schematically. You can e.g. B. be designed as a connector 26, the branch z. B. has a locking lug 27 which in an elastic tongue 28 with receptacle 29 for the latch engages.

Bei standardisierten Verbindungsstellen 25 lassen sich die Module frei miteinander kombinieren. Mögliche Ausgestaltungen der Module sind Deckel 30 für Seitenöffnungen 31, die auch z. B. zum Anschluss von Lambda-Virtel-Rohren dienen können, Resonanzräume 33 und Leitungsabschnitte 34, welche mit Zusatzöffnungen 18a, b versehen sein können.With standardized connection points 25, the modules can be freely connected to one another combine. Possible configurations of the modules are covers 30 for side openings 31, which, for. B. can be used to connect Lambda Virtel tubes, Resonance rooms 33 and line sections 34, which with additional openings 18a, b can be provided.

Claims (8)

  1. Automotive vehicle, having an air intake system for an internal combustion engine, said system including at least one intake opening (14) and an outlet (15), on the cylinder side, for the combustion air, a branching-off portion (17) being attached to the air intake system and having an additional opening (18 a-d) which communicates with the combustion air, the additional opening (18 a-d) being orientated in such a manner that, when the air intake system is installed in an engine compartment (10) of the automotive vehicle, the noise at the mouth, which is radiated from said opening, primarily influences a passenger compartment (11) of the automotive vehicle, characterised in that combustion air can be drawn-in by suction through the additional opening.
  2. Automotive vehicle according to claim 1, characterised in that the branching-off portion (17) is mounted on the air intake system by means of a plug-in connection (26).
  3. Automotive vehicle according to one of the previous claims, characterised in that the branching-off portion has a modular construction, the modules having junction points (25) for the mutual securement thereof.
  4. Automotive vehicle according to one of the previous claims, characterised in that the additional opening is directed towards automobile body parts, more especially the wheel housing (20), in the engine compartment, which parts are connected to the passenger compartment (11) of the automotive vehicle in a sound-conducting manner.
  5. Automotive vehicle according to one of the previous claims, characterised in that the additional opening is directed towards a dividing wall (19) between the passenger compartment (11) and the engine compartment (10).
  6. Automotive vehicle according to one of the previous claims, characterised in that the additional opening is directed towards a reflecting surface (21) in the engine compartment (10) for a deflection of the noise at the mouth of the additional opening in a direction towards the passenger compartment (11).
  7. Automotive vehicle according to one of the previous claims, characterised in that the additional opening communicates with the volume of the passenger compartment (11).
  8. Automotive vehicle according to claim 7, characterised in that the additional opening communicates with a means (23) for supplying fresh air to the passenger compartment.
EP01115421A 2000-07-15 2001-06-27 Intake system for a vehicle Expired - Lifetime EP1172547B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10034479 2000-07-15
DE10034479A DE10034479A1 (en) 2000-07-15 2000-07-15 Intake system for a motor vehicle

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EP1172547A2 EP1172547A2 (en) 2002-01-16
EP1172547A3 EP1172547A3 (en) 2002-10-02
EP1172547B1 true EP1172547B1 (en) 2003-11-19

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EP01115421A Expired - Lifetime EP1172547B1 (en) 2000-07-15 2001-06-27 Intake system for a vehicle

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EP (1) EP1172547B1 (en)
AT (1) ATE254719T1 (en)
DE (2) DE10034479A1 (en)
ES (1) ES2211700T3 (en)

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DE10221448B4 (en) * 2002-05-15 2014-02-13 Mahle Filtersysteme Gmbh Fresh air system for a motor vehicle
EP1369576B1 (en) * 2002-06-03 2012-02-08 Siemens VDO Automotive Inc. Integrated engine compartment component and air intake system
DE10357017A1 (en) * 2003-12-05 2005-06-30 Daimlerchrysler Ag Noise generation device for automobile has sound waves generated within engine air intake line propagated in direction of bulkhead between engine compartment and passenger compartment
US20070186895A1 (en) * 2006-01-31 2007-08-16 Daisuke Ochi Air cleaner box, intake sound control apparatus, and intake sound control method
DE102007045927B4 (en) * 2006-12-20 2020-03-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Sound transmission device

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US3396812A (en) * 1967-07-05 1968-08-13 Arvin Ind Inc Acoustic quarter wave tube
JPS61190159A (en) * 1985-02-18 1986-08-23 Honda Motor Co Ltd Intake system silencer for internal-combustion engine
JPH0214912A (en) * 1988-07-04 1990-01-18 Nissan Motor Co Ltd Installing method for resonator for vehicle
DE4233252C1 (en) * 1992-10-02 1993-12-16 Bayerische Motoren Werke Ag Acoustic signalling display indicating engine running noise in car - uses signal representing depression of accelerator pedal to control throttle in pneumatic line leading to oscillating membrane
DE4419219A1 (en) * 1994-06-01 1996-03-07 Mann & Hummel Filter Sound damping assembly for suction manifold air ducts of vehicle IC engine
DE4435296C2 (en) * 1994-10-01 2002-04-25 Bayerische Motoren Werke Ag Motor vehicle with an internal combustion engine
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DE19747271A1 (en) * 1997-10-25 1999-04-29 Bayerische Motoren Werke Ag Motor air intake
DE19915592A1 (en) * 1999-04-07 2000-10-19 Porsche Ag Intake element for an internal combustion engine

Also Published As

Publication number Publication date
DE10034479A1 (en) 2002-01-24
DE50100987D1 (en) 2003-12-24
EP1172547A3 (en) 2002-10-02
ATE254719T1 (en) 2003-12-15
ES2211700T3 (en) 2004-07-16
EP1172547A2 (en) 2002-01-16

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