EP1538329A2 - Air filter for an internal combustion engine - Google Patents

Air filter for an internal combustion engine Download PDF

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Publication number
EP1538329A2
EP1538329A2 EP04026359A EP04026359A EP1538329A2 EP 1538329 A2 EP1538329 A2 EP 1538329A2 EP 04026359 A EP04026359 A EP 04026359A EP 04026359 A EP04026359 A EP 04026359A EP 1538329 A2 EP1538329 A2 EP 1538329A2
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EP
European Patent Office
Prior art keywords
air filter
air
resonator
internal combustion
combustion engine
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.)
Granted
Application number
EP04026359A
Other languages
German (de)
French (fr)
Other versions
EP1538329A3 (en
EP1538329B1 (en
Inventor
Roger Holle
Michael Wessels
Bernd Müller
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP1538329A2 publication Critical patent/EP1538329A2/en
Publication of EP1538329A3 publication Critical patent/EP1538329A3/en
Application granted granted Critical
Publication of EP1538329B1 publication Critical patent/EP1538329B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M35/14—Combined air cleaners and silencers
    • 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
    • F02M35/02—Air cleaners
    • F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
    • F02M35/0205—Details, e.g. sensors or measuring devices
    • F02M35/0207—Details, e.g. sensors or measuring devices on the clean air side
    • 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
    • F02M35/1222—Flow throttling or guiding by using adjustable or movable elements, e.g. valves, membranes, bellows, expanding or shrinking elements
    • 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

Definitions

  • the invention relates to an air filter for internal combustion engine according to the features of Preamble of claim 1.
  • an air filter for an internal combustion engine in which in the air filter housing an insert made of an air-permeable and fine-meshed textured fabric or a thin-walled sound element in the air filter housing covered opening covers. This can over the protected housing opening to Generating attractive exterior and interior noise on the vehicle Sound components off be emitted to the intake system.
  • the object of the invention is even better at the effect of the sound device to adapt to the respective operating state of the internal combustion engine.
  • the resonator volume which can be switched on or off by the resonator is advantageous and way integrated in the clean air bowl and is about a pipe section with a pipeline leading to the intake tract of the internal combustion engine, wherein in the pipe section a resonator volume on or off switchable Control is arranged.
  • the controlling body is for example as formed vacuum-controlled flap element. Other embodiments of the Control body, such.
  • the Resonatorvolumen controlling valves or membranes are also possible.
  • tissue or the sound element is accommodated in a frame, which as Insert is secured in the housing opening introduced in the air filter housing.
  • the resonator is disabled in the lower and middle speed range to the excitation of the higher engine orders for sound transmission with a discrete Frequency in the interior to use.
  • the resonator active to lower the interior noise level, as in this area Resonance phenomena by the dominant gas exchange orders particularly strong emerge.
  • the air filter housing 2 shown schematically in Fig. 1 consists of a Rohluftschale 4 and a clean air tray 6, both of which are tightly interconnected.
  • an air filter 8 is arranged between these two shells 4 and 6, between these two shells 4 and 6, an air filter 8 is arranged.
  • the feeder of unfiltered air LR in the housing 2 via a with the raw air space 4a in conjunction standing supply line 10 and then via the air filter 8 in the clean air space 6a and from there from the clean air LM via a supply line 12 to the intake of the Internal combustion engine supplied.
  • an opening 13 is introduced into which a with a fabric structure provided insert member 14 is attached.
  • the frame-like Insert 14 has a plurality of window-like openings 14a to 14e, of the technical tissue are covered.
  • the technical fabric can be used on the Insert 14 sprayed on, welded, glued or clamped to the frame of Insert 14 to be attached.
  • the insert 14 in turn can by means of a screw or Clip connection 16 to be attached to the clean air tray 4.
  • the fabric ensures that by the swinging of the air column in the intake tract of the internal combustion engine On the other hand, it prevents sound components from being conducted to the outside Water, dirt or the like. From the outside via the opening 13 in the air filter housing. 2 can get.
  • the tissue can optionally additionally be coated hydrophobic.
  • the housing opening 13 through a thin-walled sound element is covered, the same or similar characteristics as having the tissue.
  • the fabric or the sound element can oscillate in the process Insert 14 to be attached.
  • a resonator 18 is integrated, the volume 20 via a pipe section 22 with the intake tract of the internal combustion engine leading supply line 12 is in communication.
  • a Shut-off 24 arranged in the present embodiment as a flap formed and in its open position the resonator 20 with the Feed line 12 connects and in the closed state, the resonator 20 of the supply line 12 and thus separated from the intake of the engine.
  • the flap member 24 via a linkage 26 with a Vacuum box 28 connected.
  • the vacuum unit 28 is connected via a pressure line 30 with a vacuum accumulator, not shown, connected by a in the Pressure line 30 arranged switching valve 32, the connection between the pressure box 28th and vacuum reservoir is switched on or off.
  • the resonator volume 20 is in the lower and middle speed range by closing the flap 24 separated from the intake of the engine to the excitation of the higher engine orders for sound transmission at a discrete frequency in the Interior to use.
  • the flap 24 is opened and thus the resonator activates to the outgoing sound or sound level lower in this speed range due to resonance phenomena, stimulated by the dominant gas exchange regulations, especially in the intake system is highly trained.

Abstract

The air filter has a housing (2) containing an air filter element (8) between a raw air inlet (10) and the clean air outlet (12) in the clean air bowl (6) there is an aperture (13) in the housing, covered by a fine fabric or thin-walled sound element. A resonator (18) is fitted on the clean air side, it is switched on and off, depending on preset engine parameters.

Description

Die Erfindung betrifft einen Luftfilter für Brennkraftmaschine gemäß den Merkmalen des Oberbegriffs des Patentanspruchs 1.The invention relates to an air filter for internal combustion engine according to the features of Preamble of claim 1.

Aus der EP 1 350 945 A2 ist ein Luftfilter für eine Brennkraftmaschine bekannt, bei dem im Luftfiltergehäuse ein Einsatz aus einem luftdurchlässigen und feinmaschig strukturierten Gewebe oder einem dünnwandigen Schallelement eine im Luftfiltergehäuse eingebrachte Öffnung abdeckt. Damit können über die geschützte Gehäuseöffnung zur Erzeugung eines attraktiven Außen- und Innengeräusches am Fahrzeug Schallanteile aus dem Ansaugtrakt abgestrahlt werden.From EP 1 350 945 A2 an air filter for an internal combustion engine is known in which in the air filter housing an insert made of an air-permeable and fine-meshed textured fabric or a thin-walled sound element in the air filter housing covered opening covers. This can over the protected housing opening to Generating attractive exterior and interior noise on the vehicle Sound components off be emitted to the intake system.

Aufgabe der Erfindung ist es, die Wirkung der Schalleinrichtung noch besser an den jeweiligen Betriebszustand der Brennkraftmaschine anzupassen.The object of the invention is even better at the effect of the sound device to adapt to the respective operating state of the internal combustion engine.

Die Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst.The object is solved by the features specified in claim 1.

Durch den zu- bzw. abschaltbaren Resonator kann der über die Gehäuseöffnung des Luftfilters abgestrahlte Schallpegel besser an den Betriebszustand der Brennkraftmaschine angepasst werden.Through the resonator can be switched on or off via the housing opening of the Air filter radiated sound levels better to the operating condition of Internal combustion engine to be adjusted.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung möglich.The measures listed in the dependent claims are advantageous Further developments and embodiments of the invention possible.

Das durch den Resonator zu- bzw. abschaltbare Resonatorvolumen ist auf vorteilhafte Art und Weise in der Reinluftschale integriert und steht über einen Rohrleitungsabschnitt mit einer zum Ansaugtrakt der Brennkraftmaschine führenden Rohrleitung in Verbindung, wobei in dem Rohrleitungsabschnitt ein das Resonatorvolumen zu- bzw. abschaltbares Kontrollorgan angeordnet ist. Das Kontrollorgan ist dabei beispielsweise als unterdruckgesteuertes Klappenelement ausgebildet. Andere Ausführungsformen des Kontrollorgans, wie z. B. das Resonatorvolumen kontrollierende Ventile oder Membranen sind jedoch ebenfalls möglich.The resonator volume which can be switched on or off by the resonator is advantageous and way integrated in the clean air bowl and is about a pipe section with a pipeline leading to the intake tract of the internal combustion engine, wherein in the pipe section a resonator volume on or off switchable Control is arranged. The controlling body is for example as formed vacuum-controlled flap element. Other embodiments of the Control body, such. As the Resonatorvolumen controlling valves or membranes However, they are also possible.

Um zu vermeiden, dass über die im Luftfiltergehäuse angeordnete Öffnung Wasser, Schmutz oder dgl. in das Luftfiltergehäuse eindringen kann, wird vorgeschlagen, das Gewebe oder das Schallelement hydrophob zu beschichten.In order to avoid that over the opening arranged in the air filter housing water, Dirt or the like. Can penetrate into the air filter housing, it is proposed that Tissue or the sound element hydrophobic coat.

Das Gewebe bzw. das Schallelement ist in einem Rahmen aufgenommen, der als Einsatzteil in der im Luftfiltergehäuse eingebrachten Gehäuseöffnung befestigt ist.The tissue or the sound element is accommodated in a frame, which as Insert is secured in the housing opening introduced in the air filter housing.

Der Resonator wird im unteren und mittleren Drehzahlbereich funktionslos geschaltet, um die Anregung der höheren Motorordnungen für die Schallübertragung mit einer diskreten Frequenz in den Innenraum zu nutzen. Im oberen Drehzahlbereich wird der Resonator aktiv geschaltet, um den Innengeräuschpegel abzusenken, da in diesem Bereich Resonanzerscheinungen durch die dominierenden Gaswechselordnungen besonders stark hervortreten.The resonator is disabled in the lower and middle speed range to the excitation of the higher engine orders for sound transmission with a discrete Frequency in the interior to use. In the upper speed range, the resonator active to lower the interior noise level, as in this area Resonance phenomena by the dominant gas exchange orders particularly strong emerge.

Die Erfindung wird nachfolgend anhand der Beschreibung und den Zeichnungen näher erläutert.The invention will be more apparent from the description and the drawings explained.

Es zeigen:

Fig. 1
eine schematische Darstellung eines Luftfiltergehäuses mit integriertem Resonator,
Fig. 2
eine Draufsicht auf das Luftfiltergehäuse,
Fig. 3
einen Schnitt entlang der Linie III - III in Fig. 2 und
Fig. 4
eine Innenansicht auf die Reinluftschale des Luftfiltergehäuses
Show it:
Fig. 1
a schematic representation of an air filter housing with integrated resonator,
Fig. 2
a top view of the air filter housing,
Fig. 3
a section along the line III - III in Fig. 2 and
Fig. 4
an inside view of the clean air bowl of the air filter housing

Das in Fig. 1 schematisch dargestellte Luftfiltergehäuse 2 besteht aus einer Rohluftschale 4 und einer Reinluftschale 6, die beide dicht miteinander verbunden sind. The air filter housing 2 shown schematically in Fig. 1 consists of a Rohluftschale 4 and a clean air tray 6, both of which are tightly interconnected.

Zwischen diesen beiden Schalen 4 und 6 ist ein Luftfilter 8 angeordnet. Die Zuführung von Rohluft LR in das Gehäuse 2 erfolgt über eine mit dem Rohluftraum 4a in Verbindung stehende Zuleitung 10 und dann über den Luftfilter 8 in den Reinluftraum 6a und von dort aus wird die Reinluft LM über eine Zuführleitung 12 dem Ansaugtrakt der Brennkraftmaschine zugeführt.Between these two shells 4 and 6, an air filter 8 is arranged. The feeder of unfiltered air LR in the housing 2 via a with the raw air space 4a in conjunction standing supply line 10 and then via the air filter 8 in the clean air space 6a and from there from the clean air LM via a supply line 12 to the intake of the Internal combustion engine supplied.

In der Gehäusewand der Rohluftschale 4 ist eine Öffnung 13 eingebracht, in die ein mit einer Gewebestruktur versehenes Einsatzteil 14 befestigt ist. Das rahmenartige Einsatzteil 14 weist mehrere fensterartige Öffnungen 14a bis 14e auf, die von dem technischen Gewebe überdeckt sind. Das technische Gewebe kann dabei auf dem Einsatzteil 14 aufgespritzt, aufgeschweißt, aufgeklebt oder klemmend am Rahmen des Einsatzteils 14 befestigt sein. Das Einsatzteil 14 wiederum kann mit Hilfe einer Schrauboder Clipsverbindung 16 an der Reinluftschale 4 befestigt sein. Das Gewebe stellt sicher, dass durch das Schwingen der Luftsäule im Ansaugtrakt der Brennkraftmaschine Schallanteile nach außen geleitet werden können, verhindert aber andererseits, dass Wasser, Schmutz oder dgl. von außen über die Öffnung 13 in das Luftfiltergehäuse 2 gelangen kann. Zu diesem Zweck kann das Gewebe wahlweise noch zusätzlich hydrophob beschichtet werden.In the housing wall of the raw air shell 4, an opening 13 is introduced into which a with a fabric structure provided insert member 14 is attached. The frame-like Insert 14 has a plurality of window-like openings 14a to 14e, of the technical tissue are covered. The technical fabric can be used on the Insert 14 sprayed on, welded, glued or clamped to the frame of Insert 14 to be attached. The insert 14 in turn can by means of a screw or Clip connection 16 to be attached to the clean air tray 4. The fabric ensures that by the swinging of the air column in the intake tract of the internal combustion engine On the other hand, it prevents sound components from being conducted to the outside Water, dirt or the like. From the outside via the opening 13 in the air filter housing. 2 can get. For this purpose, the tissue can optionally additionally be coated hydrophobic.

Alternativ zum Gewebe ist es auch möglich, dass die Gehäuseöffnung 13 durch ein dünnwandiges Schallelement abgedeckt ist, das gleiche oder ähnliche Eigenschaften wie das Gewebe aufweist. Das Gewebe oder das Schallelement kann dabei schwingend im Einsatzteil 14 befestigt sein. Zur weiteren Ausbildung des Gewebes bzw. des Schallelementes wird auf die EP 1 350 945 A2 verwiesen, dessen Offenbarungsgehalt ausdrücklich mit einbezogen ist.As an alternative to the tissue, it is also possible that the housing opening 13 through a thin-walled sound element is covered, the same or similar characteristics as having the tissue. The fabric or the sound element can oscillate in the process Insert 14 to be attached. For further formation of the tissue or the Schallelementes is made to EP 1 350 945 A2, the disclosure of which is explicitly included.

In der Reinluftschale 6 ist ein Resonatorgehäuse 18 integriert, dessen Volumen 20 über einen Rohrleitungsabschnitt 22 mit der zum Ansaugtrakt der Brennkraftmaschine führenden Zuführleitung 12 in Verbindung steht. Im Rohrleitungsabschnitt 22 ist ein Absperrelement 24 angeordnet, das im vorliegenden Ausführungsbeispiel als Klappe ausgebildet und in seiner geöffneten Position das Resonatorvolumen 20 mit der Zuführleitung 12 verbindet und im geschlossenen Zustand das Resonatorvolumen 20 von der Zuführleitung 12 und damit vom Ansaugtrakt der Brennkraftmaschine trennt. Wie aus Fig. 3 ersichtlich, ist das Klappenelement 24 über ein Gestänge 26 mit einer Unterdruckdose 28 verbunden. Die Unterdruckdose 28 ist über eine Druckleitung 30 mit einem nicht dargestellten Unterdruckspeicher verbunden, wobei durch ein in der Druckleitung 30 angeordnetes Umschaltventil 32 die Verbindung zwischen Druckdose 28 und Unterdruckspeicher zu- bzw. abschaltbar ist.In the clean air tray 6, a resonator 18 is integrated, the volume 20 via a pipe section 22 with the intake tract of the internal combustion engine leading supply line 12 is in communication. In the pipe section 22 is a Shut-off 24 arranged in the present embodiment as a flap formed and in its open position the resonator 20 with the Feed line 12 connects and in the closed state, the resonator 20 of the supply line 12 and thus separated from the intake of the engine. How out Fig. 3 can be seen, the flap member 24 via a linkage 26 with a Vacuum box 28 connected. The vacuum unit 28 is connected via a pressure line 30 with a vacuum accumulator, not shown, connected by a in the Pressure line 30 arranged switching valve 32, the connection between the pressure box 28th and vacuum reservoir is switched on or off.

Das Resonatorvolumen 20 wird im unteren und mittleren Drehzahlbereich durch Schließen der Klappe 24 vom Ansaugtrakt der Brennkraftmaschine getrennt, um die Anregung der höheren Motorordnungen für die Schallübertragung mit einer diskreten Frequenz in den Innenraum zu nutzen. Im oberen Drehzahlbereich wird die Klappe 24 geöffnet und somit der Resonator aktiviert, um den nach außen tretenden Geräusch- bzw. Schallpegel abzusenken, der in diesem Drehzahlbereich aufgrund von Resonanzerscheinungen, angeregt durch die dominierenden Gaswechselordnungen, im Ansaugtrakt besonders stark ausgebildet ist.The resonator volume 20 is in the lower and middle speed range by closing the flap 24 separated from the intake of the engine to the excitation of the higher engine orders for sound transmission at a discrete frequency in the Interior to use. In the upper speed range, the flap 24 is opened and thus the resonator activates to the outgoing sound or sound level lower in this speed range due to resonance phenomena, stimulated by the dominant gas exchange regulations, especially in the intake system is highly trained.

Claims (6)

Luftfilter für eine Brennkraftmaschine, mit einem Gehäuse, in dem ein Luftfilterelement angeordnet ist, welches zwischen einem Rohlufteinlass in einer Rohluftschale und einem Reinluftauslass in einer Reinluftschale angeordnet ist, sowie mit einer im Luftfiltergehäuse vorgesehenen Öffnung, die durch ein luftdurchlässiges und feinmaschiges Gewebe oder durch ein dünnwandiges Schallelement abgedeckt ist, dadurch gekennzeichnet, dass zur Optimierung der Schallabstrahlung auf der Reinluftseite ein Resonator (18) vorgesehen ist, der in Abhängigkeit vorgebbarer Motorparameter zu- bzw. abschaltbar ist.Air filter for an internal combustion engine, comprising a housing in which an air filter element is arranged, which is arranged between a Rohlufteinlass in a Rohluftschale and a clean air outlet in a clean air bowl, and provided with an air filter housing opening through an air-permeable and fine-mesh fabric or by a thin-walled sound element is covered, characterized in that for optimizing the sound radiation on the clean air side, a resonator (18) is provided which can be switched on or off in accordance with predefinable engine parameters. Luftfilter nach Anspruch 1, dadurch gekennzeichnet, dass das Resonatorvolumen (20) in der Reinluftschale (6) integriert und über einen Rohrleitungsabschnitt (22) mit einer zum Ansaugtrakt der Brennkraftmaschine führenden Rohrleitung (12) verbunden ist, wobei in dem Rohrleitungsabschnitt (22) ein Absperrelement (24) angeordnet ist.Air filter according to claim 1, characterized in that the resonator volume (20) integrated in the clean air shell (6) and via a pipe section (22) with a leading to the intake tract of the internal combustion engine pipe (12) is connected, wherein in the pipe section (22) Shut-off element (24) is arranged. Luftfilter nach Anspruch 2, dadurch gekennzeichnet, dass das Absperrelement (24) als unterdruckgesteuertes Klappenelement ausgebildet ist.Air filter according to claim 2, characterized in that the shut-off element (24) is designed as a vacuum-controlled flap element. Luftfilter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das die Öffnung (13) abdeckende Gewebe oder das Schallelement hydrophob beschichtet ist.Air filter according to one of the preceding claims, characterized in that the tissue covering the opening (13) or the sound element is hydrophobic coated. Luftfilter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Gewebe oder das Schallelement von einem Rahmen umschlossen ist, der als Einsatzteil (14) in der Gehäuseöffnung (13) eingesetzt ist.Air filter according to one of the preceding claims, characterized in that the fabric or the sound element is enclosed by a frame which is inserted as an insert part (14) in the housing opening (13). Luftfilter nach Anspruch 1, dadurch gekennzeichnet, dass im unteren und mittleren Drehzahlbereich der Resonator (18) deaktiviert und im oberen Drehzahlbereich aktiviert ist.Air filter according to claim 1, characterized in that in the lower and middle speed range of the resonator (18) is deactivated and activated in the upper speed range.
EP20040026359 2003-12-04 2004-11-05 Air filter for an internal combustion engine Expired - Fee Related EP1538329B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10356583 2003-12-04
DE10356583A DE10356583A1 (en) 2003-12-04 2003-12-04 Air filter for an internal combustion engine

Publications (3)

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EP1538329A2 true EP1538329A2 (en) 2005-06-08
EP1538329A3 EP1538329A3 (en) 2010-12-01
EP1538329B1 EP1538329B1 (en) 2014-07-09

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EP (1) EP1538329B1 (en)
DE (1) DE10356583A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017009492A1 (en) 2017-10-12 2019-04-18 Daimler Ag Method for adjusting an engine acoustics of an internal combustion engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007026416B4 (en) 2007-06-06 2014-09-04 Audi Ag Device for influencing the intake noise of an internal combustion engine
DE102019210078A1 (en) * 2019-07-09 2021-01-14 Mahle International Gmbh Air filter module

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1350945A2 (en) 2002-03-27 2003-10-08 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Air cleaner for an internal combustion engine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4538556A (en) * 1983-07-11 1985-09-03 Toyota Jidosha Kabushiki Kaisha Air intake device of an internal combustion engine
JPS6161910A (en) * 1984-08-31 1986-03-29 Nippon Denso Co Ltd Air cleaner for internal-combustion engine
JP2564867B2 (en) * 1987-12-26 1996-12-18 日本電装株式会社 Silencer for internal combustion engine
JP3846569B2 (en) * 2002-03-29 2006-11-15 株式会社デンソー Intake device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1350945A2 (en) 2002-03-27 2003-10-08 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Air cleaner for an internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017009492A1 (en) 2017-10-12 2019-04-18 Daimler Ag Method for adjusting an engine acoustics of an internal combustion engine

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EP1538329A3 (en) 2010-12-01
DE10356583A1 (en) 2005-07-07
EP1538329B1 (en) 2014-07-09

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