EP1860291B1 - Silencer intermediate wall - Google Patents
Silencer intermediate wall Download PDFInfo
- Publication number
- EP1860291B1 EP1860291B1 EP07106788A EP07106788A EP1860291B1 EP 1860291 B1 EP1860291 B1 EP 1860291B1 EP 07106788 A EP07106788 A EP 07106788A EP 07106788 A EP07106788 A EP 07106788A EP 1860291 B1 EP1860291 B1 EP 1860291B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silencer
- silencer base
- opening
- muffler
- slits
- 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.)
- Active
Links
- 230000003584 silencer Effects 0.000 title claims description 23
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/08—Two or more expansion chambers in series separated by apertured walls only
Definitions
- the present invention relates to a sheet-metal component, namely a silencer bottom, with at least one passage opening for a tubular component, in particular for an exhaust pipe, according to the preamble of claim 1.
- a tubular member In a variety of applications, it is necessary to insert and connect a tubular member through a through hole of a sheet-like member.
- Such an application is for example a muffler bottom of an exhaust system for an internal combustion engine, in particular in a motor vehicle, which is penetrated by an exhaust pipe.
- a mechanical load in the region of the connection of the tubular component to the sheet-shaped component, ie to the muffler floor may occur, with force peaks causing a peripheral edge of the through opening to tear.
- annular leaf spring having an outer ring and an inner ring, the are integrally connected to each other on two rings ringseqmentförmige spring arms connected to each other and are resiliently positioned in two planes relative to each other.
- the present invention addresses the problem of providing an improved embodiment for a silencer floor of the generic type, which is characterized in particular by a better shelf life.
- the invention is based on the general idea, in a muffler bottom, which has a passage opening for a tubular component, in an area adjacent to the through-opening region to provide at least one slot-shaped component penetrating slot, which runs in the circumferential direction of the through hole or tangentially to the same.
- One or more such slots cause the operation of the exhaust system or when heating the tubular member an improved force into the muffler floor and lead to a serpentine flow of force around the arranged in the muffler bottom slots around. Due to the serpentine flow pattern, the force is introduced on a much longer path in the muffler floor, so that it is able to absorb the introduced force in the elastic range and thus without deformation or without damage.
- the at least one slot penetrating the muffler floor can be produced by a suitable cutting operation with or without material removal.
- Such a punching process can be realized without cutting, whereby the tool used in this case can achieve a long service life and thereby reduces the manufacturing cost of the muffler floor.
- the slot has at each end a rounding which enlarges the slot width, or the longitudinal end-side end sections of the slot are bent semicircularly. Both variants cause a favorable flow of force in the longitudinal end region of the slot and thereby reduce the risk of tearing the slot end.
- the described configuration of the longitudinal end regions of the slots thus voltage peaks can be better absorbed and at the same time the life of the muffler floor can be increased.
- At least two slots have different lengths.
- the longitudinal extent of the slots can be adjusted individually to the occurring or expected force flow, whereby the muffler floor can be aligned particularly well in the production of the loads occurring in the later operating state.
- a plurality of slots are arranged along a plurality of radially spaced-apart circles. These circles do not necessarily have the same center and cause a favorable force flow of the force to be introduced in particular in a chosen in the manner of a staggered association arrangement of the slots along the circles.
- the force flow is forced to a serpentine line, whereby the distance traveled extends. This extended force introduction path causes the material to be able to absorb the introduced force in the elastic region, so that there are no, in particular permanent, plastic deformations during operation.
- Fig. 1 has a sheet-metal component, namely a muffler bottom 1 at least one through hole 2, here a total of three through holes 2, 2 ', 2 ", wherein at least one through-hole 2, not shown, tubular member, in particular an exhaust pipe, can be performed the sheet-like member is formed here as a muffler floor 1 and may be part of a muffler, not shown, moreover, an exhaust system for an internal combustion engine, in particular a motor vehicle.
- the muffler floor 1 in a region adjacent to the passage opening 2 a plurality of the muffler floor 1 penetrating slots 3, which extend substantially in the circumferential direction of or tangential to the passage opening 2.
- the slots 3 can have a curved or a straight course.
- the muffler floor 1 further, the muffler floor 1 penetrating openings 4, which according to the Fig. 1 arranged in a grid shape offset from one another.
- the openings 4 are, however, purely exemplary, so that muffler floors 1 according to the Fig. 2 should be included in the invention, which have no additional openings 4.
- the slots 3 can, for example, a slot width-increasing fillet 5 (see. Fig. 2 ), which cause an improved flow of force within the muffler floor 1.
- the longitudinal end-side end portions of the slots 3 may also be bent in a semicircle, which causes the same effect.
- the fillets 5 and the bent end portions are preferably arranged concave to each other and are radially from the respective slot 3 to the outside.
- the slots 3 are arranged along a plurality of radially spaced circles 6, which either, as in Fig. 1 shown, do not have a common center, or, as in Fig. 2 shown concentric to each other are arranged. Regardless of the arrangement of the circles 6 to each other, the slots 3 are preferably arranged in a kind of offset association to each other along the radially spaced-apart circles 6.
- Such a staggered dressing is known, for example from the field of masonry and causes in any layer (here circles 6) butt joints between individual slots 3 are continuous.
- the tubular component (not shown) penetrates at least the passage opening 2 and is fixedly connected to the muffler floor 1 in the region of the passage opening 2, eg by welding or soldering. During operation, this can lead to a heating of the tubular component, so that it expands in the circumferential direction. Such expansion causes a force acting in the circumferential direction on an edge 7 of the through hole 2, which would lead to tearing of the edge 7 in the worst case. In order to prevent such tearing, the slits 3 are provided in the region adjacent to the through-hole 2.
- the slots 3 thereby cause a deflection of the power flow, whereby the path for the introduction of force is extended, preferably such that the muffler bottom 1 can record the example entered due to the thermal expansion force in the elastic range.
- the above-described arrangement of the slots 3 in the manner of a staggered bandage along the radially spaced circles 6 causes a forced, serpentine course of the power flow between the slots 3 and thereby extends the force introduction path in a particularly advantageous manner.
- the arrangement of the slots 3 along the radially spaced circles 6 is to be understood purely as an example, so that, for example, an arrangement of the slots 3 along bent in the circumferential direction of rays is conceivable.
- the slots 3 may have different lengths and thereby be particularly well adapted to the expected force entry. It is also conceivable that the slots 3 are arranged only on a limiting circumferential segment around the passage opening 2 around, as for example in Fig. 1 is shown, or fully around the through hole 2 around, as shown in Fig. 2 is shown.
- the sheet-metal component as described above is designed as a muffler floor 1 and thereby forms part of a muffler, for example, for an exhaust system of a motor vehicle.
- a muffler floor 1 has the task of a partition, which separates two spaces in the muffler from each other.
- one of the rooms may be an absorption space that may be filled with a sound-absorbing substance or with absorption material.
- the muffler floor 1 is fixed in this embodiment to a housing, not shown, of the muffler, in particular welded.
- the Muffler bottom 1 made of a plastic or metal, in particular made of sheet metal, be formed.
- sheet-like is to be understood here merely that in a Cartesian coordinate system, the component 1 has a significantly smaller thickness than its extension in the longitudinal or width direction.
- the sheet-metal component that is to say here the muffler bottom 1
- the invention proposes, in the case of a sheet-metal component 1, namely a silencer base 1 with a passage opening 2 for a tubular component, in the area around the passage opening 2 or in an area adjacent thereto, to provide the silencer floor 1 with penetrating slots 3 are formed and arranged so that an introduction of force through the tubular component, in particular by a thermal expansion thereof, can be accommodated in the elastic region of the silencer bottom 1.
- the slots 3 are arranged to extend essentially in the circumferential direction or tangentially to the passage opening 2.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Description
Die vorliegende Erfindung betrifft ein blechförmiges Bauteil, nämlich einen Schalldämpferboden, mit zumindest einer Durchgangsöffnung für ein rohrförmiges Bauteil, insbesondere für ein Abgasrohr, gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a sheet-metal component, namely a silencer bottom, with at least one passage opening for a tubular component, in particular for an exhaust pipe, according to the preamble of claim 1.
In einer Vielzahl von Anwendungen ist es erforderlich, ein rohrförmiges Bauteil durch eine Durchgangsöffnung eines blechförmigen Bauteils hindurch zustecken und mit diesem zu verbinden. Eine derartige Anwendung ist beispielsweise ein Schalldämpferboden einer Abgasanlage für eine Brennkraftmaschine, insbesondere in einem Kraftfahrzeug, welcher von einem Abgasrohr durchdrungen ist. Beim Betrieb der Abgasanlage kann es aufgrund unterschiedlicher Temperaturdehnungen zu einer mechanischen Belastung im Bereich der Anbindung des rohrförmigen Bauteils an das blechförmige Bauteil, also an den Schalldämpferboden kommen, wobei Kraftspitzen dazu führen können, dass ein Umfangsrand der Durchgangsöffnung einreißt.In a variety of applications, it is necessary to insert and connect a tubular member through a through hole of a sheet-like member. Such an application is for example a muffler bottom of an exhaust system for an internal combustion engine, in particular in a motor vehicle, which is penetrated by an exhaust pipe. During operation of the exhaust system, due to different thermal expansions, a mechanical load in the region of the connection of the tubular component to the sheet-shaped component, ie to the muffler floor, may occur, with force peaks causing a peripheral edge of the through opening to tear.
Aus der
Die vorliegende Erfindung beschäftigt sich mit dem Problem, für einen Schalldämpferboden der gattungsgemäßen Art eine verbesserte Ausführungsform anzugeben, die sich insbesondere durch eine bessere Haltbarkeitsdauer auszeichnet.The present invention addresses the problem of providing an improved embodiment for a silencer floor of the generic type, which is characterized in particular by a better shelf life.
Dieses Problem wird durch den Gegenstand des unabhängigen Anspruchs gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This problem is solved by the subject matter of the independent claim. Advantageous embodiments are the subject of the dependent claims.
Die Erfindung beruht auf dem allgemeinen Gedanken, bei einem Schalldämpferboden, der eine Durchgangsöffnung für ein rohrförmiges Bauteil aufweist, in einem an die Durchgangsöffnung angrenzenden Bereich wenigstens einen das blechförmige Bauteil durchdringenden Schlitz vorzusehen, welcher in Umfangsrichtung der Durchgangsöffnung oder tangential zu derselben verläuft. Ein bzw. mehrere derartiger Schlitze bewirken beim Betrieb der Abgasanlage bzw. beim Erwärmen des rohrförmigen Bauteils eine verbesserte Krafteinleitung in den Schalldämpferboden und führen zu einem schlangenlinienartig verlaufenden Kraftfluss um die im Schalldämpferboden angeordneten Schlitze herum. Aufgrund des schlangenlinienförmigen Kraftflussverlaufs wird die Kraft auf einem deutlich längeren Weg in den Schalldämpferboden eingebracht, so dass dieser in der Lage ist, die eingeleitete Kraft im elastischen Bereich und damit ohne Verformungen bzw. ohne Beschädigungen aufzunehmen. Durch die Beseitigung von Spannungsspitzen, welche den elastischen Bereich des Schalldämpferbodens übersteigen, kann die Lebensdauer der aus dem rohrförmigen und dem blechförmigen Bauteil gebildeten Bauteilanordnung signifikant erhöht werden.The invention is based on the general idea, in a muffler bottom, which has a passage opening for a tubular component, in an area adjacent to the through-opening region to provide at least one slot-shaped component penetrating slot, which runs in the circumferential direction of the through hole or tangentially to the same. One or more such slots cause the operation of the exhaust system or when heating the tubular member an improved force into the muffler floor and lead to a serpentine flow of force around the arranged in the muffler bottom slots around. Due to the serpentine flow pattern, the force is introduced on a much longer path in the muffler floor, so that it is able to absorb the introduced force in the elastic range and thus without deformation or without damage. By eliminating stress peaks that exceed the elastic range of the muffler floor, the life of the component arrangement formed from the tubular and the sheet-metal component can be significantly increased.
Grundsätzlich kann der wenigstens eine den Schalldämpferboden durchdringende Schlitz durch einen geeigneten Schneidvorgang mit oder ohne Materialabtragung hergestellt werden. Bevorzugt wird eine Ausführungsform, bei welcher der jeweilige Schlitz dadurch hergestellt wird, dass ein Bereich des Schalldämpferbodens, der im an die Durchgangsöffnung angrenzenden Bereich liegt, ausgestellt bzw. durchgestellt wird, z.B. durch einen entsprechenden Stanzvorgang. Ein derartiger Stanzvorgang lässt sich spanlos realisieren, wodurch das dabei verwendete Werkzeug eine hohe Standzeit erreichen kann und dadurch die Herstellungskosten für den Schalldämpferboden reduziert.In principle, the at least one slot penetrating the muffler floor can be produced by a suitable cutting operation with or without material removal. Preferred is an embodiment in which the respective slot is made by exposing a portion of the muffler floor lying in the area adjacent to the passage opening, e.g. by a corresponding punching process. Such a punching process can be realized without cutting, whereby the tool used in this case can achieve a long service life and thereby reduces the manufacturing cost of the muffler floor.
Zweckmäßig weist der Schlitz jeweils endseitig eine die Schlitzweite vergrößernde Ausrundung auf oder es sind die längsendseitigen Endabschnitte des Schlitzes halbkreisförmig gebogen. Beide Varianten bewirken einen günstigen Kraftfluss im längsendseitigen Bereich des Schlitzes und vermindern dadurch die Gefahr des Einreißens des Schlitzendes. Durch die beschriebene Ausgestaltung der längsendseitigen Bereiche der Schlitze können somit Spannungsspitzen besser aufgenommen werden und gleichzeitig die Lebensdauer des Schalldämpferbodens erhöht werden.Expediently, the slot has at each end a rounding which enlarges the slot width, or the longitudinal end-side end sections of the slot are bent semicircularly. Both variants cause a favorable flow of force in the longitudinal end region of the slot and thereby reduce the risk of tearing the slot end. The described configuration of the longitudinal end regions of the slots thus voltage peaks can be better absorbed and at the same time the life of the muffler floor can be increased.
Bei einer vorteilhaften Ausführungsform der erfindungsgemäßen Lösung weisen zumindest zwei Schlitze unterschiedliche Längen auf. Die Längserstreckung der Schlitze kann dabei individuell an den auftretenden bzw. erwartenden Kraftfluss angepasst werden, wodurch der Schalldämpferboden bereits in der Fertigung besonders gut auf die im späteren Betriebszustand auftretenden Belastungen ausgerichtet werden kann.In an advantageous embodiment of the solution according to the invention, at least two slots have different lengths. The longitudinal extent of the slots can be adjusted individually to the occurring or expected force flow, whereby the muffler floor can be aligned particularly well in the production of the loads occurring in the later operating state.
Bei einer weiteren vorteilhaften Ausführungsform der erfindungsgemäßen Lösung sind mehrere Schlitze entlang mehrerer, radial zueinander beabstandeter Kreise angeordnet. Diese Kreise müssen nicht unbedingt denselben Mittelpunkt haben und bewirken insbesondere bei einer in der Art eines versetzten Verbandes gewählten Anordnung der Schlitze entlang der Kreise einen günstigen Kraftfluss der einzuleitenden Kraft. Durch die in der Art des versetzten Verbandes angeordneten Schlitze wird der Kraftfluss auf eine Schlangenlinie gezwungen, wodurch sich der zurückgelegte Weg verlängert. Dieser verlängerte Krafteinleitungsweg bewirkt, dass das Material in der Lage ist, die eingeleitete Kraft im elastischen Bereich aufnehmen zu können, so dass es zu keinen, insbesondere bleibenden, plastischen Verformungen während des Betriebs kommt.In a further advantageous embodiment of the solution according to the invention a plurality of slots are arranged along a plurality of radially spaced-apart circles. These circles do not necessarily have the same center and cause a favorable force flow of the force to be introduced in particular in a chosen in the manner of a staggered association arrangement of the slots along the circles. By arranged in the manner of the staggered association slots the force flow is forced to a serpentine line, whereby the distance traveled extends. This extended force introduction path causes the material to be able to absorb the introduced force in the elastic region, so that there are no, in particular permanent, plastic deformations during operation.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.
Es zeigen, jeweils schematisch,
- Fig. 1
- ein Schalldämpferboden mit den dieses durchdringenden, erfindungsgemäßen Schlitzen,
- Fig. 2
- eine Darstellung wie in
Fig. 1 , jedoch bei einer anderen Ausführungsform.
- Fig. 1
- a muffler floor with the slits penetrating this invention,
- Fig. 2
- a representation like in
Fig. 1 but in another embodiment.
Entsprechend
Längsendseitig der Schlitze 3 können diese beispielsweise eine die Schlitzweite vergrößernde Ausrundung 5 (vgl.
Dabei sind die Schlitze 3 entlang mehrerer, radial zueinander beabstandeter Kreise 6 angeordnet, welche entweder, wie in
In montiertem Zustand durchdringt das rohrförmige, nicht gezeigte, Bauteil zumindest die Durchgangsöffnung 2 und ist im Bereich der Durchgangsöffnung 2 fest mit dem Schalldämpferboden 1 verbunden, z.B. durch Verschweißen oder Verlöten. Im Betrieb kann es dabei zu einer Erwärmung des rohrförmigen Bauteils kommen, so dass sich dieses in Umfangsrichtung ausdehnt. Eine derartige Ausdehnung bewirkt eine in Umfangsrichtung wirkende Kraft an einem Rand 7 der Durchgangsöffnung 2, welche im ungünstigsten Fall zu einem Einreißen des Randes 7 führen würde. Um ein derartiges Einreißen zu verhindern, sind die Schlitze 3 im an die Durchgangsöffnung 2 angrenzenden Bereich vorgesehen. Die Schlitze 3 bewirken dabei eine Umlenkung des Kraftflusses, wodurch der Weg zur Krafteinleitung verlängert wird, vorzugsweise derart, dass der Schalldämpferboden 1 die beispielsweise aufgrund der Temperaturdehnung eingetragene Kraft im elastischen Bereich aufnehmen kann. Die oben beschriebene Anordnung der Schlitze 3 in der Art eines versetzten Verbandes entlang der radial zueinander beabstandeten Kreise 6 bewirkt dabei einen erzwungenen, schlangenförmigen Verlauf des Kraftflusses zwischen den Schlitzen 3 hindurch und verlängert dadurch den Krafteinleitungsweg in besonders vorteilhafter Weise. Die Anordnung der Schlitze 3 entlang der radial zueinander beabstandeten Kreise 6 ist dabei rein exemplarisch zu verstehen, so dass beispielsweise auch eine Anordnung der Schlitze 3 entlang von in Umfangsrichtung gebogenen Strahlen denkbar ist.In the assembled state, the tubular component (not shown) penetrates at least the passage opening 2 and is fixedly connected to the muffler floor 1 in the region of the passage opening 2, eg by welding or soldering. During operation, this can lead to a heating of the tubular component, so that it expands in the circumferential direction. Such expansion causes a force acting in the circumferential direction on an edge 7 of the through
Wie in den
Generell ist das blechförmige Bauteil wie eingangs beschriebenen als Schalldämpferboden 1 ausgebildet und bildet dadurch einen Teil eines Schalldämpfers, beispielsweise für eine Abgasanlage eines Kraftfahrzeugs. Ein derartiger Schalldämpferboden 1 hat beispielsweise die Aufgabe einer Trennwand, welche zwei Räume im Schalldämpfer voneinander trennt. Dabei kann es sich bei einem der Räume beispielsweise um einen Absorptionsraum handeln, der mit einem Schallschluckstoff oder mit Absorptionsmaterial befüllt sein kann. Der Schalldämpferboden 1 ist bei dieser Ausführungsform an einem nicht gezeigten Gehäuse des Schalldämpfers befestigt, insbesondere angeschweißt. Grundsätzlich kann dabei der Schalldämpferboden 1 aus einem Kunststoff oder aus Metall, insbesondere aus Blech, ausgebildet sein. Unter blechförmig soll hierbei lediglich verstanden werden, dass bei einem kartesischen Koordinatensystem das Bauteil 1 eine deutlich kleinere Dicke aufweist, als dessen Erstreckung in Längs- bzw. Breitenrichtung. Generell kann das blechförmige Bauteil, also hier der Schalldämpferboden 1 grundsätzlich einen beliebigen, dreidimensionalen Verlauf aufweisen und muss sich nicht in einer Ebene erstrecken.In general, the sheet-metal component as described above is designed as a muffler floor 1 and thereby forms part of a muffler, for example, for an exhaust system of a motor vehicle. Such a muffler floor 1, for example, has the task of a partition, which separates two spaces in the muffler from each other. For example, one of the rooms may be an absorption space that may be filled with a sound-absorbing substance or with absorption material. The muffler floor 1 is fixed in this embodiment to a housing, not shown, of the muffler, in particular welded. Basically, while the Muffler bottom 1 made of a plastic or metal, in particular made of sheet metal, be formed. The term sheet-like is to be understood here merely that in a Cartesian coordinate system, the component 1 has a significantly smaller thickness than its extension in the longitudinal or width direction. In general, the sheet-metal component, that is to say here the muffler bottom 1, can in principle have an arbitrary, three-dimensional course and does not have to extend in one plane.
Zusammenfassend lassen sich die wesentlichen Merkmale der erfindungsgemäßen Lösung wie folgt charakterisieren:In summary, the essential features of the solution according to the invention can be characterized as follows:
Die Erfindung schlägt vor, bei einem blechförmigen Bauteil 1, nämlich bei einem Schalldämpferboden 1 mit einer Durchgangsöffnung 2 für ein rohrförmiges Bauteil, im Bereich um die Durchgangsöffnung 2 herum bzw. in einem an diese angrenzenden Bereich, den Schalldämpferboden 1 durchdringende Schlitze 3 vorzusehen, welche so ausgebildet und angeordnet sind, dass eine Krafteinleitung durch das rohrförmige Bauteil, insbesondere durch eine Temperaturdehnung desselben, im elastischen Bereich des Schalldämpferbodens 1 aufgenommen werden kann. Dazu sind die Schlitze 3 im Wesentlichen in Umfangsrichtung oder tangential zur Durchgangsöffnung 2 verlaufend angeordnet.The invention proposes, in the case of a sheet-metal component 1, namely a silencer base 1 with a
Claims (10)
- A silencer base (1), more preferably a silencer base with at least a through opening (2) for a pipe-shaped component, more preferably for an exhaust pipe, characterized in that the silencer base (1) in a region adjoining the through opening (2) comprises at least one slit (3) penetrating the silencer base (1), which substantially runs in circumferential direction of the through opening (2) or tangentially to the through opening (2).
- The silencer base according to Claim 1, characterized- in that the slit (3) on each longitudinal end side comprises a rounding (5) enlarging the slit width, or- in that the end sections of the slits (3) on the longitudinal end side are bent in the shape of a semicircle.
- The silencer base according to Claim 2, characterized in that the roundings (5) or the bent end sections are arranged concavely to each other and from the slit (3) face radially outward.
- The silencer base according to any one of the Claims 1 to 3, characterized in that a plurality of slits (3) is arranged along a plurality of circles (6) radially spaced from each other.
- The silencer base according to Claim 4, characterized in that the slits (3) are arranged in a kind of offset formation along the circles (6) radially spaced from each other.
- The silencer base according to Claim 5, characterized in that the circles (6) touch one another in a point.
- The silencer base according to any one of the Claims 1 to 6, characterized in that at least two slits (3) have different lengths.
- The silencer base according to any one of the Claims 1 to 7, characterized in that the slits (3) are arranged on a limited circumferential segment about the through opening (2).
- The silencer base according to any one of the Claims 1 to 8, characterized in that a pipe-shaped component is permanently connected with the silencer base (1) in the region of the through opening (2).
- A silencer for a combustion engine with a silencer base (1) according to any one of the Claims 1 to 9 and a pipe-shaped component which in the installed state penetrates the silencer base (1) in the through opening (2) and on the through opening (2) is connected with the silencer base (1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006024576A DE102006024576A1 (en) | 2006-05-23 | 2006-05-23 | Sheet-shaped component |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1860291A1 EP1860291A1 (en) | 2007-11-28 |
EP1860291B1 true EP1860291B1 (en) | 2009-07-22 |
Family
ID=38353905
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07106788A Active EP1860291B1 (en) | 2006-05-23 | 2007-04-24 | Silencer intermediate wall |
Country Status (5)
Country | Link |
---|---|
US (1) | US7543682B2 (en) |
EP (1) | EP1860291B1 (en) |
JP (1) | JP5161487B2 (en) |
CN (1) | CN101078362B (en) |
DE (2) | DE102006024576A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006016095A1 (en) * | 2006-04-04 | 2007-10-11 | J. Eberspächer GmbH & Co. KG | silencer |
DE102014112069A1 (en) * | 2014-08-22 | 2016-02-25 | Friedrich Boysen Gmbh & Co. Kg | Silencer for an exhaust system |
DE102016101693A1 (en) * | 2016-02-01 | 2017-08-03 | Eberspächer Exhaust Technology GmbH & Co. KG | Silencer for an exhaust system |
DE102017124750A1 (en) | 2017-10-23 | 2019-04-25 | Eberspächer Exhaust Technology GmbH & Co. KG | Muffler insert, muffler with this and method of making a muffler insert |
US10787951B2 (en) * | 2017-11-20 | 2020-09-29 | Tenneco Automotive Operating Company Inc. | Pipe and metal sheet subassembly for an exhaust treatment device |
CN109057918A (en) * | 2018-10-15 | 2018-12-21 | 上海天纳克排气系统有限公司 | The partition of silencer |
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US3482649A (en) * | 1968-09-09 | 1969-12-09 | Milo E Murphy | Exhaust muffler for combustion engines |
DE3011638A1 (en) * | 1980-03-26 | 1981-10-01 | Robert Bosch Gmbh, 7000 Stuttgart | CONTROL DEVICE FOR A FUEL METERING SYSTEM OF AN INTERNAL COMBUSTION ENGINE |
US4487289A (en) * | 1982-03-01 | 1984-12-11 | Nelson Industries, Inc. | Exhaust muffler with protective shield |
US4530418A (en) * | 1982-06-01 | 1985-07-23 | Currie Neil L | Automotive exhaust system |
JPS5996391U (en) * | 1982-12-20 | 1984-06-29 | 松下冷機株式会社 | rotary compressor |
JPS61130634A (en) * | 1984-11-29 | 1986-06-18 | Sunstar Giken Kk | Disc for disc brake and its manufacturing method |
DE3514475A1 (en) * | 1985-04-22 | 1986-10-23 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Exhaust silencer for an internal combustion engine |
CN87204375U (en) * | 1987-06-27 | 1988-03-30 | 湘潭市环境保护科学研究所 | Energy-saving exhaust gas purifying damper for motor vehicle |
US4941545A (en) * | 1989-04-28 | 1990-07-17 | Arvin Industries, Inc. | Muffler assembly |
CN2061210U (en) * | 1989-05-09 | 1990-08-29 | 欧阿林 | Cleaning device for automobile exhaust |
CN2052814U (en) * | 1989-06-02 | 1990-02-14 | 湘潭市月华机电厂 | Exhuast muffler for diesel engine |
DE9409952U1 (en) * | 1994-06-20 | 1994-09-01 | Prignitz, Herbert, 22117 Hamburg | Isolation silencer |
GB9414656D0 (en) * | 1994-07-20 | 1994-09-07 | Gracia Albert L | Improvements in or relating to exhaust silencers |
DE69723928T2 (en) | 1996-09-09 | 2004-02-12 | Calsonic Kansei Corp. | Circular plate spring |
US5831223A (en) * | 1997-09-24 | 1998-11-03 | Kesselring; Stephen H. | Self-tuning exhaust muffler |
US6382931B1 (en) * | 1998-02-24 | 2002-05-07 | Respironics, Inc. | Compressor muffler |
US6202785B1 (en) * | 1999-06-02 | 2001-03-20 | 3M Innovative Properties Company | Muffler with acoustic absorption insert for limited clearance pneumatic device applications |
US6220387B1 (en) * | 1999-10-21 | 2001-04-24 | Mathew S. Hoppes | Exhaust muffler |
JP4154098B2 (en) * | 1999-12-02 | 2008-09-24 | 本田技研工業株式会社 | Exhaust muffler for vehicles |
US7316109B2 (en) * | 2006-01-17 | 2008-01-08 | Fleetguard, Inc | Lobed exhaust diffuser apparatus, system, and method |
DE10140435C1 (en) * | 2001-08-17 | 2002-12-12 | Porsche Ag | Exhaust gas system for a motor vehicle has a tail pipe device running adjacent to a wall part of a motor vehicle construction |
JP4486297B2 (en) * | 2002-02-19 | 2010-06-23 | 株式会社ニコン | Semiconductor wafer processing apparatus and semiconductor wafer manufacturing method using the same |
CN2747296Y (en) * | 2004-09-23 | 2005-12-21 | 蒋明生 | Sound-deadening plate |
US20060151238A1 (en) * | 2005-01-11 | 2006-07-13 | Giordano Cal C | Tail gunner exhaust muffler |
US7152710B1 (en) * | 2005-08-16 | 2006-12-26 | Zhenqiu Huang | Self-powered, heat-activated LED vehicle exhaust tip assembly |
-
2006
- 2006-05-23 DE DE102006024576A patent/DE102006024576A1/en not_active Withdrawn
-
2007
- 2007-04-24 EP EP07106788A patent/EP1860291B1/en active Active
- 2007-04-24 DE DE502007001092T patent/DE502007001092D1/en active Active
- 2007-05-23 JP JP2007136154A patent/JP5161487B2/en active Active
- 2007-05-23 CN CN2007101076510A patent/CN101078362B/en active Active
- 2007-05-23 US US11/805,431 patent/US7543682B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102006024576A1 (en) | 2007-11-29 |
JP2007315391A (en) | 2007-12-06 |
JP5161487B2 (en) | 2013-03-13 |
EP1860291A1 (en) | 2007-11-28 |
US20080121460A1 (en) | 2008-05-29 |
CN101078362A (en) | 2007-11-28 |
CN101078362B (en) | 2010-12-08 |
DE502007001092D1 (en) | 2009-09-03 |
US7543682B2 (en) | 2009-06-09 |
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