EP2213869B1 - Air filter device for a combustion engine of a motor vehicle and support for supporting an air filter - Google Patents

Air filter device for a combustion engine of a motor vehicle and support for supporting an air filter Download PDF

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Publication number
EP2213869B1
EP2213869B1 EP10000670.9A EP10000670A EP2213869B1 EP 2213869 B1 EP2213869 B1 EP 2213869B1 EP 10000670 A EP10000670 A EP 10000670A EP 2213869 B1 EP2213869 B1 EP 2213869B1
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EP
European Patent Office
Prior art keywords
air filter
air
support
filter housing
shaft
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.)
Not-in-force
Application number
EP10000670.9A
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German (de)
French (fr)
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EP2213869A2 (en
EP2213869A3 (en
Inventor
Ralf Ziegler
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Audi AG
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Audi AG
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Publication of EP2213869A2 publication Critical patent/EP2213869A2/en
Publication of EP2213869A3 publication Critical patent/EP2213869A3/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
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • F02M35/02416—Fixing, mounting, supporting or arranging filter elements; Filter element cartridges
    • 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
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • F02M35/02416—Fixing, mounting, supporting or arranging filter elements; Filter element cartridges
    • F02M35/02433—Special alignment with respect to the air intake flow, e.g. angled or in longitudinal flow direction
    • 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
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • F02M35/02475—Air cleaners using filters, e.g. moistened characterised by the shape of the filter element
    • F02M35/02483—Cylindrical, conical, oval, spherical or the like filter elements; wounded filter 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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like

Definitions

  • the invention relates to an air filter device for an internal combustion engine of a motor vehicle and a support for supporting an air filter in an air filter housing.
  • an air filter for an internal combustion engine of a motor vehicle.
  • an air filter comprises a wire mesh with a circumferential seal, which is defined between a lower part and a removable upper part of an air filter housing.
  • the wire mesh carries a folded filter material which is arranged on a supply air side of the air filter.
  • Inside the air filter housing a partial housing is delimited by two integrally formed with this transverse walls.
  • An outer wall of the sub-housing comprises an air outlet formed as a connecting piece.
  • the sub-housing has a further air inlet arranged in the bottom of the air filter housing. A filter unit inserted into the sub-housing ensures that filtered air flows into the connecting piece when the air-filtering device is operated.
  • WO 03/048557 A1 relates to an intake air filter for an internal combustion engine, with a filter housing having a Rohlufteinlass and a clean air inlet, and arranged in the filter housing, radially from outside to flow through the ring filter insert having at one axial end a first end plate having at least one opening through which the clean air outlet communicates with an interior of the ring filter cartridge.
  • the filter housing has a clean-side Sekundär Kunststoffauslass, wherein the ring filter insert at a distal end of the first end axial end has a second end plate having at least one opening through which communicates the Sekundär Kunststoffauslass with the interior of the annular filter insert.
  • the object of the present invention is to provide an air filter device for an internal combustion engine of a motor vehicle with an extended functionality.
  • the support is at least partially traversed by air and has a connection area for connecting a line for this air.
  • the support serves on the one hand to reduce vibration of the air filter due to vibrations of the air filter device. As a result, a permanently secure sealing seat of the air filter on the air filter housing can be reached. Furthermore, air can be taken from the air filter housing via the support, which can be flowed through at least in regions by air.
  • the connection area can be designed to connect another air-using or air-consuming system.
  • the system may be a secondary air system with a secondary air duct and a conveyor for conveying air. Thus, no additional component must be provided for connecting the secondary air line.
  • Air can be supplied to the secondary air system via the secondary air line, which air is supplied to a catalytic converter in the warm-up operation of the internal combustion engine for the afterburning of exhaust gas constituents.
  • the provision of the through-flow of the air and the connection area having support thus allows a comparatively space-saving accommodation of components for the further air system, in particular secondary air system, in the motor vehicle.
  • the support is a different component of the air filter housing, wherein an opening of the air filter housing is closed by means of a bottom plate of the support.
  • the complex-to-produce air filter housing does not need to be modified for this purpose.
  • the air filter housing can thus be used in an intake air system in which, instead of the support, a connection piece for discharging air filtered by the air filter out of the air filter housing can be fixed to the opening. So can be realized with one and the same air filter housing different spatial arrangements of components of the intake air system.
  • the support comprises an at least partially hollow shaft with at least one air inlet opening, which is covered by a filter element.
  • the filter element may in this case be designed as a filter sleeve attachable to the shaft.
  • the support has a separate filter element from the air filter.
  • the air filter does not need to be airtight to sit on the shaft. This embodiment is thus less susceptible to manufacturing tolerances.
  • the at least one air inlet opening is spaced from the base plate of the support which closes the opening of the air filter housing. This ensures that water deposited in the air filter housing, which is possibly introduced with the unfiltered outside air into the air filter housing, does not penetrate into the at least one air inlet opening of the support even if the air filter device is in a tilted position, for example as a result of cornering of the motor vehicle.
  • a, in particular rotationally symmetrical, mounting part is arranged, which is inclined with respect to a central region of the shaft. Due to the inclined design of the end region of the shaft, an air filter arranged inclined in the air filter housing is supported particularly securely and precisely by means of the support.
  • the attachment member may be specifically locatable at the end portion of the shaft for a specific air filter. If the attachment part is rotationally symmetrical, for example hemispherical, then tolerances of the air filter can be compensated. At the same time a secure support of the air filter is ensured by means of the hemispherical Aufmineils.
  • an air filter device with an extended functionality can be provided by a support for supporting an air filter in an air filter housing, which has a hollow, at least partially hollow, air-flowable shaft with at least one Has air inlet opening.
  • the support further comprises a bottom plate, by means of which an opening of the air filter housing can be closed.
  • the support also includes a connection area for connecting a conduit for this air.
  • Fig. 1 shows an air filter device 10 for an internal combustion engine of a motor vehicle.
  • An air cleaner housing 12 has an air inlet 14 and an air outlet 16.
  • An air filter 18 is set tightly on the outlet side of the air filter housing 12 and arranged obliquely in the air filter housing 12.
  • the air filter 18 is cylindrical, wherein a lateral surface of the cylinder can be traversed by air. From the inside of the cylindrical air filter 18, the filtered air is supplied to the air outlet 16. A rigid, made of plastic bottom 20 of the air filter 18 is supported by a support 22 in the air filter housing 12. By the support 12 it is avoided that vibrations of the air filter device 10 lead to a reduction of the tightness in the seat of the air filter 18 on the air filter housing 12.
  • the support 22 includes a hollow shaft 24, which continues outside the air filter housing 12 as a connecting piece 26. Over the connecting piece 26, air is removable from the support 22.
  • the connecting piece 26 of the support 22 protrudes from an opening of the air filter housing 12, which is hermetically sealed by means of a bottom plate 28 of the support 22.
  • the bottom plate 28 of the support 22 has three attachment flanges (not shown).
  • a line of a secondary air pump is connected to the connecting piece 26, by means of which upstream of a catalyst secondary air is supplied to an exhaust gas stream.
  • exhaust gas components such as carbon monoxide and hydrocarbons, can be fed to an afterburner, whereby pollutant emissions can be reduced during warm-up of the internal combustion engine.
  • a central region of the shaft 24 of the support 22 is surrounded by a filter sleeve 30.
  • the removable filter sleeve 30 is constructed in two layers, wherein the two layers are formed for the separation of particles of different particle size.
  • the filter sleeve 30 may be single-layered or have more than two layers.
  • the at least one layer of the filter sleeve 30 may have a gradient with respect to the deposition of particles of different particle size within the layer.
  • a Aufmeneil 32 which is attached to an end portion 34 of the shaft 24, is formed hemispherical.
  • the attachment part 32 is arranged in regions in a recess which is arranged centrally in the bottom 20 of the air filter 18.
  • a center axis M of the landing part 32 coincides with a center axis of the air filter 18 and is inclined with respect to the central axis A of the shaft 24.
  • the relative to the central region of the shaft 24 inclined end portion 34 of the shaft 24 has a circumferential collar 40, which engages when attaching the Aufmaneils 32 in a recess 32 formed in the mounting groove.
  • the bottom plate 28 Opposite the central axis A of the shaft 24, the bottom plate 28 is inclined, so that in the air filter housing 12 separated water to a water drain 36 of the support 22 can run out.
  • the water outlet 36 has a valve.
  • the length of the water outlet 36 is dimensioned such that, despite the negative pressure prevailing during operation of the air filter device 10 within the air filter housing 12, water is prevented from flowing out of the water outlet 36 into the connecting piece 26.
  • the middle region of the shaft 24, on which the filter sleeve 30 can be pushed, is formed as a grid, through which several air inlet openings 38 are provided in the shaft 24 (FIG. Fig. 3 ).
  • the distance d between the air inlet openings 38 and the bottom plate 28 of the support 22 is in this case dimensioned such that even in cornering of the motor vehicle no water deposited in the air filter housing 12 can penetrate into the inlet openings 38.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Exhaust Gas After Treatment (AREA)

Description

Die Erfindung betrifft eine Luftfiltereinrichtung für eine Verbrennungskraftmaschine eines Kraftfahrzeugs sowie eine Stütze zum Abstützen eines Luftfilters in einem Luftfiltergehäuse.The invention relates to an air filter device for an internal combustion engine of a motor vehicle and a support for supporting an air filter in an air filter housing.

Die US 4,995,891 A beschreibt eine Luftfiltereinrichtung für eine Verbrennungskraftmaschine eines Kraftfahrzeugs. Hierbei umfasst ein Luftfilter ein Drahtgitter mit einer umlaufenden Dichtung, welche zwischen einem Unterteil und einem abnehmbaren Oberteil eines Luftfiltergehäuses festgelegt ist. Das Drahtgitter trägt ein gefaltetes Filtermaterial, welches auf einer Zuluftseite des Luftfilters angeordnet ist. Im Inneren des Luftfiltergehäuses ist durch zwei einstückig mit diesem ausgebildete Querwände ein Teilgehäuse abgegrenzt. Um sicherzustellen, dass über eine oberseitige Öffnung in das Teilgehäuse einströmende Luft gefiltert wird, grenzt das Teilgehäuse an eine Unterseite des gefalteten Filtermaterials des Luftfilters an. Eine Außenwand des Teilgehäuses umfasst einen als Anschlussstutzen ausgebildeten Luftauslass. Durch Anschließen einer Leitung an den Anschlussstutzen ist über diesen Luftauslass dem Kurbelgehäuse der Verbrennungskraftmaschine Luft zuführbar, welche zum Abführen von Gasen aus dem Kurbelgehäuse dient. Das Teilgehäuse weist einen im Boden des Luftfiltergehäuses angeordneten weiteren Lufteinlass auf. Eine in das Teilgehäuse eingesetzte Filtereinheit sorgt dafür, dass beim Betreiben der Luftfiltereinrichtung gefilterte Luft in den Anschlussstutzen einströmt.The US 4,995,891 A describes an air filter device for an internal combustion engine of a motor vehicle. Here, an air filter comprises a wire mesh with a circumferential seal, which is defined between a lower part and a removable upper part of an air filter housing. The wire mesh carries a folded filter material which is arranged on a supply air side of the air filter. Inside the air filter housing a partial housing is delimited by two integrally formed with this transverse walls. To ensure that air flowing into the sub-housing via a top-side opening is filtered, the sub-housing adjoins an underside of the folded filter material of the air filter. An outer wall of the sub-housing comprises an air outlet formed as a connecting piece. By connecting a line to the connecting piece, air can be supplied to the crankcase of the internal combustion engine via this air outlet, which serves for discharging gases from the crankcase. The sub-housing has a further air inlet arranged in the bottom of the air filter housing. A filter unit inserted into the sub-housing ensures that filtered air flows into the connecting piece when the air-filtering device is operated.

Aus dem Stand der Technik ist weiterhin die Druckschrift WO 03/048557 A1 bekannt. Diese betrifft ein Ansaugluftfilter für eine Brennkraftmaschine, mit einem Filtergehäuse, das einen Rohlufteinlass und einen Reinlufteinlass aufweist, und mit einem im Filtergehäuse angeordneten, radial von außen nach innen durchströmten Ringfiltereinsatz, der an einem axialen Ende eine erste Endscheibe aufweist, die mindestens eine Öffnung aufweist, durch die der Reinluftauslass mit einem Inneren des Ringfiltereinsatzes kommuniziert. Um den Einfluss einer Sekundärluftansaugung auf die Frischluftversorgung der Brennkraftmaschine zu reduzieren, weist das Filtergehäuse einen reinseitigen Sekundärluftauslass auf, wobei der Ringfiltereinsatz an einem von der ersten Endscheibe abgewandten axialen Ende eine zweite Endscheibe aufweist, die mindestens eine Öffnung aufweist, durch die das Sekundärluftauslass mit dem Inneren des Ringfiltereinsatzes kommuniziert.From the prior art is still the document WO 03/048557 A1 known. This relates to an intake air filter for an internal combustion engine, with a filter housing having a Rohlufteinlass and a clean air inlet, and arranged in the filter housing, radially from outside to flow through the ring filter insert having at one axial end a first end plate having at least one opening through which the clean air outlet communicates with an interior of the ring filter cartridge. To the influence of a secondary air intake on the fresh air supply To reduce the internal combustion engine, the filter housing has a clean-side Sekundärluftauslass, wherein the ring filter insert at a distal end of the first end axial end has a second end plate having at least one opening through which communicates the Sekundärluftauslass with the interior of the annular filter insert.

Aufgabe der vorliegenden Erfindung ist es, eine Luftfiltereinrichtung für eine Verbrennungskraftmaschine eines Kraftfahrzeugs mit einer erweiterten Funktionalität bereitzustellen.The object of the present invention is to provide an air filter device for an internal combustion engine of a motor vehicle with an extended functionality.

Diese Aufgabe wird durch eine Luftfiltereinrichtung mit den Merkmalen des Patentanspruchs 1 gelöst. Des Weiteren wird diese Aufgabe durch eine Stütze zum Abstützen eines Luftfilters in einem Luftfiltergehäuse mit den Merkmalen des Patentanspruchs 6 gelöst. Vorteilhafte Ausgestaltungen mit zweckmäßigen Weiterbildungen der Erfindung sind in den abhängigen Patentansprüchen angegeben.This object is achieved by an air filter device having the features of patent claim 1. Furthermore, this object is achieved by a support for supporting an air filter in an air filter housing having the features of patent claim 6. Advantageous embodiments with expedient developments of the invention are specified in the dependent claims.

Die erfindungsgemäße Luftfiltereinrichtung für eine Verbrennungskraftmaschine eines Kraftfahrzeugs umfasst einen Luftfilter, welcher in einem Luftfiltergehäuse mittels einer Stütze abgestützt ist. Die Stütze ist zumindest bereichsweise von Luft durchströmbar und weist einen Anschlussbereich zum Anschließen einer Leitung für diese Luft auf.The air filter device according to the invention for an internal combustion engine of a motor vehicle comprises an air filter, which is supported in an air filter housing by means of a support. The support is at least partially traversed by air and has a connection area for connecting a line for this air.

Die Stütze dient einerseits dazu, ein Schwingen des Luftfilters infolge von Vibrationen der Luftfiltereinrichtung zu vermindern. Dadurch ist ein dauerhaft sicherer Dichtsitz des Luftfilters an dem Luftfiltergehäuse erreichbar. Des Weiteren kann über die zumindest bereichsweise von Luft durchströmbare Stütze aus dem Luftfiltergehäuse Luft entnommen werden. Beispielsweise kann der Anschlussbereich zum Anschließen eines weiteren Luft einsetzenden bzw. Luft verbrauchenden Systems ausgebildet sein. Bei dem System kann es sich um ein Sekundärluftsystem mit einer Sekundärluftleitung und einer Fördereinrichtung zum Fördern von Luft handeln. Somit muss zum Anschließen der Sekundärluftleitung kein zusätzliches Bauteil vorgesehen werden. Über die Sekundärluftleitung kann dem Sekundärluftsystem Luft bereitgestellt werden, welche einem Katalysator im Warmlaufbetrieb der Verbrennungskraftmaschine zum Nachverbrennen von Abgasbestandteilen zugeführt wird. Das Vorsehen der von der Luft durchströmbaren und den Anschlussbereich aufweisenden Stütze ermöglicht so eine vergleichsweise bauraumsparende Unterbringung von Komponenten für das weitere Luft einsetzende System, insbesondere Sekundärluftsystem, im Kraftfahrzeug.The support serves on the one hand to reduce vibration of the air filter due to vibrations of the air filter device. As a result, a permanently secure sealing seat of the air filter on the air filter housing can be reached. Furthermore, air can be taken from the air filter housing via the support, which can be flowed through at least in regions by air. For example, the connection area can be designed to connect another air-using or air-consuming system. The system may be a secondary air system with a secondary air duct and a conveyor for conveying air. Thus, no additional component must be provided for connecting the secondary air line. Air can be supplied to the secondary air system via the secondary air line, which air is supplied to a catalytic converter in the warm-up operation of the internal combustion engine for the afterburning of exhaust gas constituents. The provision of the through-flow of the air and the connection area having support thus allows a comparatively space-saving accommodation of components for the further air system, in particular secondary air system, in the motor vehicle.

Die Stütze ist ein von dem Luftfiltergehäuse verschiedenes Bauteil, wobei mittels einer Bodenplatte der Stütze eine Öffnung des Luftfiltergehäuses verschlossen ist. Dadurch ist eine erhöhte Flexibilität gegeben, da die Stütze je nach Verwendungszweck, etwa je nach Art der an den Anschlussbereich anzuschließenden Leitung, spezifisch gestaltbar ist. Das aufwendiger herzustellende Luftfiltergehäuse braucht hierzu nicht modifiziert zu werden. Des Weiteren kann so das Luftfiltergehäuse in einem Ansaugluftsystem zum Einsatz kommen, bei welchem anstelle der Stütze ein Anschlussstück zum Abführen von mittels des Luftfilters gefilterter Luft aus dem Luftfiltergehäuse an der Öffnung festlegbar ist. So können mit ein und demselben Luftfiltergehäuse unterschiedliche räumliche Anordnungen von Komponenten des Ansaugluftsystems realisiert werden.The support is a different component of the air filter housing, wherein an opening of the air filter housing is closed by means of a bottom plate of the support. As a result, an increased flexibility is given, since the support depending on the intended use, such as depending on the nature of the line to be connected to the connection area, can be designed specifically. The complex-to-produce air filter housing does not need to be modified for this purpose. Furthermore, the air filter housing can thus be used in an intake air system in which, instead of the support, a connection piece for discharging air filtered by the air filter out of the air filter housing can be fixed to the opening. So can be realized with one and the same air filter housing different spatial arrangements of components of the intake air system.

Als weiter vorteilhaft hat es sich gezeigt, wenn die Stütze einen zumindest bereichsweise hohlen Schaft mit wenigstens einer Lufteinlassöffnung umfasst, welche von einem Filterelement überdeckt ist. Das Filterelement kann hierbei als auf den Schaft aufsteckbare Filtermanschette ausgebildet sein. Bei dieser Ausführungsform weist somit die Stütze ein von dem Luftfilter verschiedenes, eigenes Filterelement auf. Im Gegensatz zu einer alternativen Ausführungsform, bei welcher der Schaft der Stütze durchgängig hohl ausgebildet ist und in den Luftfilter hineinragt, braucht bei dieser Ausführungsform der Luftfilter nicht luftdicht an dem Schaft zu sitzen. Diese Ausführungsform ist somit weniger anfällig gegenüber Fertigungstoleranzen.As a further advantage, it has been shown that the support comprises an at least partially hollow shaft with at least one air inlet opening, which is covered by a filter element. The filter element may in this case be designed as a filter sleeve attachable to the shaft. In this embodiment, therefore, the support has a separate filter element from the air filter. In contrast to an alternative embodiment in which the shaft of the support is hollow throughout and protrudes into the air filter, in this embodiment, the air filter does not need to be airtight to sit on the shaft. This embodiment is thus less susceptible to manufacturing tolerances.

Von Vorteil ist es weiterhin, wenn die wenigstens eine Lufteinlassöffnung von der die Öffnung des Luftfiltergehäuses verschließenden Bodenplatte der Stütze beabstandet ist. Dadurch ist sicherstellbar, dass in dem Luftfiltergehäuse abgeschiedenes Wasser, welches gegebenenfalls mit der ungefilterten Außenluft in das Luftfiltergehäuse eingetragen wird, auch bei einer Schieflage der Luftfiltereinrichtung, etwa infolge einer Kurvenfahrt des Kraftfahrzeugs, nicht in die wenigstens eine Lufteinlassöffnung der Stütze eindringt.It is furthermore advantageous if the at least one air inlet opening is spaced from the base plate of the support which closes the opening of the air filter housing. This ensures that water deposited in the air filter housing, which is possibly introduced with the unfiltered outside air into the air filter housing, does not penetrate into the at least one air inlet opening of the support even if the air filter device is in a tilted position, for example as a result of cornering of the motor vehicle.

Schließlich hat es sich als vorteilhaft gezeigt, wenn an einem Endbereich des Schafts ein, insbesondere rotationssymmetrisches, Aufsetzteil angeordnet ist, welches gegenüber einem Mittelbereich des Schafts geneigt ist. Durch die geneigte Ausbildung des Endbereichs des Schafts ist ein geneigt in dem Luftfiltergehäuse angeordneter Luftfilter besonders sicher und genau mittels der Stütze abgestützt. Das Aufsetzteil kann für einen spezifischen Luftfilter spezifisch an dem Endbereich des Schafts anordenbar sein. Ist das Aufsetzteil rotationssymmetrisch, beispielsweise halbkugelförmig, ausgebildet, so sind Toleranzen des Luftfilters ausgleichbar. Gleichzeitig ist mittels des halbkugelförmigen Aufsetzteils ein sicheres Abstützen des Luftfilters gewährleistet.Finally, it has proven to be advantageous if, at an end region of the shaft, a, in particular rotationally symmetrical, mounting part is arranged, which is inclined with respect to a central region of the shaft. Due to the inclined design of the end region of the shaft, an air filter arranged inclined in the air filter housing is supported particularly securely and precisely by means of the support. The attachment member may be specifically locatable at the end portion of the shaft for a specific air filter. If the attachment part is rotationally symmetrical, for example hemispherical, then tolerances of the air filter can be compensated. At the same time a secure support of the air filter is ensured by means of the hemispherical Aufsetzteils.

Gemäß einem weiteren Aspekt der Erfindung ist eine Luftfiltereinrichtung mit einer erweiterten Funktionalität bereitstellbar durch eine Stütze zum Abstützen eines Luftfilters in einem Luftfiltergehäuse, welche einen zumindest bereichsweise hohlen, von Luft durchströmbaren Schaft mit wenigstens einer Lufteinlassöffnung aufweist. Die Stütze weist des Weiteren eine Bodenplatte auf, mittels welcher eine Öffnung des Luftfiltergehäuses verschließbar ist. Die Stütze umfasst darüber hinaus einen Anschlussbereich zum Anschließen einer Leitung für diese Luft.According to a further aspect of the invention, an air filter device with an extended functionality can be provided by a support for supporting an air filter in an air filter housing, which has a hollow, at least partially hollow, air-flowable shaft with at least one Has air inlet opening. The support further comprises a bottom plate, by means of which an opening of the air filter housing can be closed. The support also includes a connection area for connecting a conduit for this air.

Die für die erfindungsgemäße Luftfiltereinrichtung beschriebenen bevorzugten Ausführungsformen und Vorteile gelten auch für die erfindungsgemäße Stütze.The preferred embodiments and advantages described for the air filter device according to the invention also apply to the support according to the invention.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie anhand der Zeichnungen. Dabei zeigen:

Fig. 1
eine perspektivische, teilweise geschnittene Ansicht einer Luftfiltereinrichtung für eine Verbrennungskraftmaschine eines Kraftfahrzeugs, bei welcher ein Luftfilter in einem Luftfiltergehäuse mittels einer Stütze abgestützt ist;
Fig. 2
eine perspektivische, vergrößerte Ansicht der Stütze; und
Fig. 3
die Stütze aus Fig. 2, von welcher ein Aufsetzteil und ein Filterelement abgenommen sind.
Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawings. Showing:
Fig. 1
a perspective, partially sectioned view of an air filter device for an internal combustion engine of a motor vehicle, in which an air filter is supported in an air filter housing by means of a support;
Fig. 2
a perspective, enlarged view of the support; and
Fig. 3
the prop out Fig. 2 from which a Aufsetzteil and a filter element are removed.

Fig. 1 zeigt eine Luftfiltereinrichtung 10 für eine Verbrennungskraftmaschine eines Kraftfahrzeugs. Ein Luftfiltergehäuse 12 weist einen Lufteinlass 14 und einen Luftauslass 16 auf. Ein Luftfilter 18 ist auslassseitig an dem Luftfiltergehäuse 12 dicht sitzend festgelegt und schräg in dem Luftfiltergehäuse 12 angeordnet. Fig. 1 shows an air filter device 10 for an internal combustion engine of a motor vehicle. An air cleaner housing 12 has an air inlet 14 and an air outlet 16. An air filter 18 is set tightly on the outlet side of the air filter housing 12 and arranged obliquely in the air filter housing 12.

Der Luftfilter 18 ist zylindrisch ausgebildet, wobei eine Mantelfläche des Zylinders von Luft durchströmbar ist. Aus dem Inneren des zylindrischen Luftfilters 18 wird die gefilterte Luft dem Luftauslass 16 zugeführt. Ein steifer, aus Kunststoff gefertigter Boden 20 des Luftfilters 18 ist mittels einer Stütze 22 in dem Luftfiltergehäuse 12 abgestützt. Durch die Stütze 12 ist vermieden, dass Vibrationen der Luftfiltereinrichtung 10 zu einem Verringern der Dichtigkeit beim Sitz des Luftfilters 18 an dem Luftfiltergehäuse 12 führen.The air filter 18 is cylindrical, wherein a lateral surface of the cylinder can be traversed by air. From the inside of the cylindrical air filter 18, the filtered air is supplied to the air outlet 16. A rigid, made of plastic bottom 20 of the air filter 18 is supported by a support 22 in the air filter housing 12. By the support 12 it is avoided that vibrations of the air filter device 10 lead to a reduction of the tightness in the seat of the air filter 18 on the air filter housing 12.

Die Stütze 22 umfasst einen hohlen Schaft 24, welcher sich außerhalb des Luftfiltergehäuses 12 als Anschlussstutzen 26 fortsetzt. Über den Anschlussstutzen 26 ist Luft aus der Stütze 22 abziehbar. Der Anschlussstutzen 26 der Stütze 22 ragt aus einer Öffnung des Luftfiltergehäuses 12 hervor, welche mittels einer Bodenplatte 28 der Stütze 22 luftdicht verschlossen ist. Zum Befestigen der Stütze 22 an dem Luftfiltergehäuse 12 weist die Bodenplatte 28 der Stütze 22 drei (nicht gezeigte) Befestigungsflansche auf.The support 22 includes a hollow shaft 24, which continues outside the air filter housing 12 as a connecting piece 26. Over the connecting piece 26, air is removable from the support 22. The connecting piece 26 of the support 22 protrudes from an opening of the air filter housing 12, which is hermetically sealed by means of a bottom plate 28 of the support 22. To fix the support 22 to the air cleaner housing 12, the bottom plate 28 of the support 22 has three attachment flanges (not shown).

Im in das Kraftfahrzeug eingebauten Betriebszustand der Luftfiltereinrichtung 10 ist an den Anschlussstutzen 26 eine Leitung einer Sekundärluftpumpe angeschlossen, mittels welcher stromaufwärts eines Katalysators Sekundärluft einem Abgasstrom zuführbar ist. Mittels der Sekundärluft sind nicht vollständig verbrannte Abgasbestandteile, beispielsweise Kohlenmonoxid und Kohlenwasserstoffe, einer Nachverbrennung zuführbar, wodurch während des Warmlaufens der Verbrennungskraftmaschine Schadstoffemissionen verringerbar sind.In installed in the motor vehicle operating state of the air filter device 10, a line of a secondary air pump is connected to the connecting piece 26, by means of which upstream of a catalyst secondary air is supplied to an exhaust gas stream. By means of the secondary air not completely burned exhaust gas components, such as carbon monoxide and hydrocarbons, can be fed to an afterburner, whereby pollutant emissions can be reduced during warm-up of the internal combustion engine.

Ein Mittelbereich des Schafts 24 der Stütze 22 ist von einer Filtermanschette 30 umgeben. Die abnehmbare Filtermanschette 30 ist zweischichtig aufgebaut, wobei die zwei Schichten zum Abscheiden von Partikel unterschiedlicher Partikelgröße ausgebildet sind. Alternativ kann die Filtermanschette 30 einschichtig aufgebaut sein oder mehr als zwei Schichten aufweisen. Ebenso kann die wenigstens eine Schicht der Filtermanschette 30 in Bezug auf das Abscheiden von Partikel unterschiedlicher Partikelgröße innerhalb der Schicht einen Gradienten aufweisen.A central region of the shaft 24 of the support 22 is surrounded by a filter sleeve 30. The removable filter sleeve 30 is constructed in two layers, wherein the two layers are formed for the separation of particles of different particle size. Alternatively, the filter sleeve 30 may be single-layered or have more than two layers. Likewise, the at least one layer of the filter sleeve 30 may have a gradient with respect to the deposition of particles of different particle size within the layer.

Insbesondere aus Fig. 2 geht hervor, dass ein Aufsetzteil 32, welches auf einen Endbereich 34 des Schafts 24 aufgesteckt ist, halbkugelförmig ausgebildet ist. Beim Abstützen des Luftfilters 18 in dem Luftfiltergehäuse 12 ist das Aufsetzteil 32 bereichsweise in einer Vertiefung angeordnet, welche in dem Boden 20 des Luftfilters 18 mittig angeordnet ist.In particular from Fig. 2 shows that a Aufsetzteil 32, which is attached to an end portion 34 of the shaft 24, is formed hemispherical. When supporting the air filter 18 in the air filter housing 12, the attachment part 32 is arranged in regions in a recess which is arranged centrally in the bottom 20 of the air filter 18.

Eine Mittelachse M des Aufsetzteils 32 fällt mit einer Mittelachse des Luftfilters 18 zusammen und ist gegenüber der Mittelachse A des Schafts 24 geneigt. Der gegenüber dem Mittelbereich des Schafts 24 geneigte Endbereich 34 des Schafts 24 weist einen umlaufenden Bund 40 auf, welcher beim Aufstecken des Aufsetzteils 32 in eine in dem Aufsetzteil 32 ausgebildete Nut eingreift.A center axis M of the landing part 32 coincides with a center axis of the air filter 18 and is inclined with respect to the central axis A of the shaft 24. The relative to the central region of the shaft 24 inclined end portion 34 of the shaft 24 has a circumferential collar 40, which engages when attaching the Aufsetzteils 32 in a recess 32 formed in the mounting groove.

Gegenüber der Mittelachse A des Schafts 24 ist die Bodenplatte 28 geneigt, so dass in dem Luftfiltergehäuse 12 abgeschiedenes Wasser zu einem Wasserablauf 36 der Stütze 22 hin ablaufen kann. Zum Ablassen des Wassers weist der Wasserablauf 36 ein Ventil auf. Die Länge des Wasserablaufs 36 ist so bemessen, dass trotz des beim Betreiben der Luftfiltereinrichtung 10 innerhalb des Luftfiltergehäuses 12 herrschenden Unterdrucks ein Übertreten von Wasser aus dem Wasserablauf 36 in den Anschlussstutzen 26 vermieden ist.Opposite the central axis A of the shaft 24, the bottom plate 28 is inclined, so that in the air filter housing 12 separated water to a water drain 36 of the support 22 can run out. To drain the water, the water outlet 36 has a valve. The length of the water outlet 36 is dimensioned such that, despite the negative pressure prevailing during operation of the air filter device 10 within the air filter housing 12, water is prevented from flowing out of the water outlet 36 into the connecting piece 26.

Der Mittelbereich des Schafts 24, auf welchen die Filtermanschette 30 aufschiebbar ist, ist als Gitter ausgebildet, durch welches mehrere Lufteinlassöffnungen 38 in dem Schaft 24 bereitgestellt sind (Fig. 3). Der Abstand d zwischen den Lufteinlassöffnungen 38 und der Bodenplatte 28 der Stütze 22 ist hierbei so bemessen, dass selbst bei einer Kurvenfahrt des Kraftfahrzeugs kein in dem Luftfiltergehäuse 12 abgeschiedenes Wasser in die Einlassöffnungen 38 eindringen kann.The middle region of the shaft 24, on which the filter sleeve 30 can be pushed, is formed as a grid, through which several air inlet openings 38 are provided in the shaft 24 (FIG. Fig. 3 ). The distance d between the air inlet openings 38 and the bottom plate 28 of the support 22 is in this case dimensioned such that even in cornering of the motor vehicle no water deposited in the air filter housing 12 can penetrate into the inlet openings 38.

Claims (5)

  1. Air filter device for an internal combustion engine in a motor vehicle, comprising an air filter (18) which is supported in an air filter housing (12) by means of a support (22), it being possible for air to flow through the support (22) at least in regions, and the support (22) comprising a connection region (26) for connecting a line for said air, characterised in that the support (22) is a separate component from the air filter housing (12), an opening in the air filter housing (12) being closed by means of a base plate (28) of the support (22).
  2. Air filter device according to claim 1, characterised in that the support (22) comprises a shaft (24) which is hollow at least in regions and has at least one air inlet opening (38) which is covered by a filter element (30).
  3. Air filter device according to claim 2, characterised in that the at least one air inlet opening (38) is spaced apart from the base plate (28) of the support (22) which closes the opening in the air filter housing (12).
  4. Air filter device according to claim 3, characterised in that an attachment part (32), which is in particular rotationally symmetrical, is arranged at an end region (34) of the shaft (24), which attachment part is inclined relative to a central region of the shaft (24).
  5. Support for supporting an air filter (18) in an air filter housing (12), comprising a shaft (24), which is hollow at least in regions, through which air can flow and which has at least one air inlet opening (38), and comprising a connection region (26) for connecting a line for said air, characterised by a base plate (28) by means of which an opening in the air filter housing (12) can be closed.
EP10000670.9A 2009-01-30 2010-01-23 Air filter device for a combustion engine of a motor vehicle and support for supporting an air filter Not-in-force EP2213869B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009006900A DE102009006900A1 (en) 2009-01-30 2009-01-30 Air filter device for an internal combustion engine of a motor vehicle and support for supporting an air filter

Publications (3)

Publication Number Publication Date
EP2213869A2 EP2213869A2 (en) 2010-08-04
EP2213869A3 EP2213869A3 (en) 2014-05-07
EP2213869B1 true EP2213869B1 (en) 2015-08-19

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Application Number Title Priority Date Filing Date
EP10000670.9A Not-in-force EP2213869B1 (en) 2009-01-30 2010-01-23 Air filter device for a combustion engine of a motor vehicle and support for supporting an air filter

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DE (1) DE102009006900A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014006852B4 (en) * 2013-06-20 2022-10-27 Mann+Hummel Gmbh Hollow filter element, filter housing and filter
US9726123B2 (en) 2013-06-20 2017-08-08 Mann+Hummel Gmbh Air filter, filter element and filter housing of an air filter
CN107989722A (en) * 2017-11-08 2018-05-04 余景超 A kind of energy source of car utilization system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240252Y2 (en) * 1973-12-03 1977-09-12
US4995891A (en) 1990-03-05 1991-02-26 Chrysler Corporation Secondary air filter assembly
JP3420471B2 (en) * 1997-07-22 2003-06-23 本田技研工業株式会社 Intake silencer
DE10159097A1 (en) * 2001-12-01 2003-06-12 Mahle Filtersysteme Gmbh Intake air filter for an internal combustion engine
DE202008001819U1 (en) * 2008-02-08 2009-06-10 Mann+Hummel Gmbh Filter device, in particular intake air filter for an internal combustion engine

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EP2213869A3 (en) 2014-05-07
DE102009006900A1 (en) 2010-08-05

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