EP1691050B1 - Muffler - Google Patents

Muffler Download PDF

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Publication number
EP1691050B1
EP1691050B1 EP05111847A EP05111847A EP1691050B1 EP 1691050 B1 EP1691050 B1 EP 1691050B1 EP 05111847 A EP05111847 A EP 05111847A EP 05111847 A EP05111847 A EP 05111847A EP 1691050 B1 EP1691050 B1 EP 1691050B1
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EP
European Patent Office
Prior art keywords
shells
muffler
housing
opening
shell
Prior art date
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Application number
EP05111847A
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German (de)
French (fr)
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EP1691050A1 (en
EP1691050B2 (en
Inventor
Friedrich Schlenker
Peter Gorke
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.)
Eberspaecher Climate Control Systems GmbH and Co KG
Original Assignee
J Eberspaecher GmbH and Co KG
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Application filed by J Eberspaecher GmbH and Co KG filed Critical J Eberspaecher GmbH and Co KG
Publication of EP1691050A1 publication Critical patent/EP1691050A1/en
Publication of EP1691050B1 publication Critical patent/EP1691050B1/en
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Classifications

    • 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
    • F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
    • 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
    • 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
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells

Definitions

  • the present invention relates to a silencer for an exhaust system of an internal combustion engine, in particular of a motor vehicle.
  • the present invention also relates to a modular system for producing such a silencer.
  • a common silencer of this type (such as in EP 0 856 647 A1 shown) has a housing which has an upper shell and a lower shell and at least one inlet opening and at least one outlet opening.
  • An inlet tube can be connected to each inlet opening, and an outlet tube can be connected to each outlet opening.
  • the muffler can be installed in an exhaust system.
  • the respective inlet opening and / or the respective outlet opening is located in the region of a parting line along which the two shells are fastened to one another. The respective opening is thus arranged between the two shells and partially covered by the two shells.
  • the upper shell and lower shell must be adapted in a corresponding manner. Since the trays are usually formed sheet metal parts, this adaptation involves considerable tooling costs.
  • the present invention is concerned with the problem of finding a way for a muffler of the type mentioned, which in particular simplifies the formation of variants.
  • the invention is based on the general idea to equip the housing additionally with a bottom which is inserted between the upper shell and lower shell and which contains at least one of the openings of the housing.
  • a bottom which is inserted between the upper shell and lower shell and which contains at least one of the openings of the housing.
  • only the floor needs to be adapted in the silencer according to the invention, while the upper shell and lower shell can remain unchanged.
  • the relatively expensive tools for the production of the shells can thus continue to be used, while only a relatively inexpensive tool for the production of the soil must be adapted.
  • proposed Construction can thus relatively inexpensive different types of silencers realize that are adapted to different exhaust systems.
  • At least one of the other of these openings is formed in one of the shells and spaced from a parting line along which the shells are attached to each other.
  • this embodiment uses the knowledge that the different exhaust systems usually differ from one another only on the inlet side or exhaust side. Accordingly, in the variants, the same opening can be formed in one of the shells.
  • this has the advantage that the dividing line is geometrically particularly simple and the connection of the two shells along the dividing line can be correspondingly easily realized. This also has a simplified, in particular automated, and thus cheaper production of the muffler result.
  • the floor is designed just and equipped with a circumferential and angled outer edge. Along this outer edge of the soil is then attached to the shells.
  • This embodiment has a simple geometry, can therefore be easily manufactured, while at the same time the tool required for this purpose is comparatively inexpensive feasible.
  • the bottom has a greater wall thickness than the shells.
  • a silencer 1 according to the invention comprises a housing 2 for accommodating a conventional silencer structure (not shown).
  • the muffler 1 is suitable for installation in an exhaust system, not shown, of an internal combustion engine, in particular of a motor vehicle.
  • its housing 2 is equipped with at least one inlet opening 3 and with at least one outlet opening 4.
  • At least one inlet pipe of the exhaust system can be connected to the at least one inlet opening 3.
  • at least one outlet pipe of the exhaust system can be connected to the at least one outlet opening 4.
  • the housing 2 has an upper shell 5 and a lower shell 6, which are fastened to one another along a parting line 7, preferably by a welded joint and / or solder joint.
  • the terms "upper shell” and “lower shell” do not necessarily refer to the respective installation situation, but to the illustration reproduced in FIG. 1, in which the upper shell 5 above and the lower shell 6 are arranged below.
  • an outwardly angled collar 8 is formed on each shell 5, 6, over which the shells 5, 6 abut each other along the dividing line 7 and are fastened to one another.
  • the housing 2 is also provided with a bottom 9, which here contains the at least one inlet opening 3.
  • the bottom 9 may contain the at least one outlet opening 4.
  • the bottom 9 is inserted between the upper shell 5 and the lower shell 6 and forms part of the housing 2. That is, the outer skin of the housing 2 is thus formed by the upper shell 5, lower shell 6 and bottom 9.
  • the bottom 9 is preferably flat and thus extends in an unspecified ground plane.
  • the bottom 9 has an outer edge 10, which is angled outwardly and closed circumferentially arranged.
  • the outer edge 10 lies on the collar 8 of the upper shell 5 and the collar 8 of the lower shell 6 and is attached via these collars 8 to the shells 5, 6, suitably by means of soldered connection and / or welded connection.
  • the at least one other opening that is to say here the at least one outlet opening 4 in one of the two shells 5, 6, is formed here in the lower shell 6 and arranged so that it is spaced from the parting line 7. This results in a particularly simple geometry for the dividing line 7. At the same time thereby making a connection between the upper shell 5 and lower shell 6 along the dividing line 7 is simplified.
  • the dividing line 7 extends outside of the bottom 9 preferably in a parting plane 11, which is indicated in Fig. 1 by a dashed line.
  • the bottom 9 is integrated into the housing 2 such that the bottom plane extends substantially perpendicular to the parting plane 11.
  • the ground plane is thus inclined relative to the parting plane 11 approximately at 90 °. Other steep angles of inclination between 75 ° to 105 °, preferably between 80 ° and 100 °, are also conceivable.
  • the shells 5, 6 and the bottom 9 are preferably designed as shaped sheet metal parts.
  • the shells 5, 6 have a smaller wall thickness than the bottom 9.
  • the weight of the housing 2 can be significantly reduced. This is possible this by the associated with the installation of the bottom 9 stiffening of the housing 2, which allows a reduction of the wall thickness in the shells 5, 6, without a desired minimum stiffness or minimum strength for the housing 2 is exceeded.
  • the wall thickness of the bottom 9 is 50% to 100% greater than the wall thickness of the shells 5, 6.
  • an outwardly flared collar 12 is formed to surround the at least one outlet opening 4.
  • inner lying outlet pipe section is used and firmly connected to the collar 12, z. B. by soldering and / or by welding.
  • the at least one inlet opening 3 is bordered by a collar 13, which protrudes outwardly from the bottom 9.
  • an inwardly designated inlet pipe section is inserted into the at least one inlet opening 3 or into its collar 13, which is firmly connected to the collar 13, for example by soldering and / or welding.
  • the silencer 1 according to the invention can preferably be produced as follows:
  • the complete muffler structure is used, wherein at least one inner outlet pipe section is inserted from the inside into the at least one outlet opening 4 and in the collar 12 thereof.
  • the bottom 9 is attached, wherein it is placed on at least one inner inlet pipe section so that the respective inlet pipe section is inserted into the respective inlet opening 3 of the bottom 9 or in the collar 13 thereof.
  • the upper shell 5 is placed.
  • the superposed frets 8 along the dividing line 7 can be interconnected.
  • the collars 8 can also be connected to the outer edge 10.
  • the at least one inner inlet pipe section can be connected to the collar 12 of the at least one outlet opening 4 and the at least one inner inlet pipe section can be connected to the collar 13 of the at least one inlet opening 3.
  • the respective inlet opening 3 at the bottom 9 is arranged so that it or its collar 13 is spaced in each direction from the outer edge 10. This simplifies the formation of the outer edge 10 and the preparation of the connection between the outer edge 10 and the collars 8 of the shells 5 and 6.
  • FIGS. 2 and 3 at least two different trays 9 can be provided for realizing a modular system with the aid of which different variants of the silencer 1 can be produced.
  • the Both bottoms 9 differ from each other by the number and / or by the geometry and / or by the position of the respective bottom 9 associated, at least one opening, here the at least one inlet opening 3.
  • Fig. 2 bottom 9 only an inlet opening 3, which has a comparatively large cross-section.
  • Fig. 3 shows another bottom 9, which has two inlet openings 3, each having a smaller cross section than in the variant shown in Fig. 2.
  • the two inlet openings 3 are arranged somewhat further down than the one inlet opening 3 in the variant according to FIG. 2.
  • FIG. 2 can thus be used in a single-flow exhaust system
  • FIG. 3 is suitable for a dual-flow exhaust system.
  • a dual-flow exhaust system lead two separate exhaust pipes, here inlet pipes to the muffler 1, wherein the separate exhaust gas streams suitably unite in the muffler 1, which is preferably designed here as a rear muffler to a common exhaust stream. Accordingly, only a single outlet opening 4 is then required both in the single-flow exhaust system and in the twin-flow exhaust system.
  • the modular system according to the invention makes it possible now, the muffler 1 either with the bottom 9 shown in FIG. 2 for adaptation to a single-flow exhaust system or with the in Fig. 3 shown to assemble floor 9 for adaptation to a dual-flow exhaust system.
  • the bottom 9 is conceivable.
  • the at least one inlet opening 3 have an elliptical cross section.
  • the trays 9 of the modular system are characterized by the fact that, despite all the differences in the at least one opening (here the at least one inlet opening 3) formed therein, they always have the same outer edge 10 geometrically. This makes it possible to install the different trays 9 alternatively between the shells 5, 6 in the housing 2, without requiring the shells 5, 6 must be adapted. It is clear that the muffler structure to be installed in the housing 2 may be modified differently depending on the floor 9. However, an adaptation in this regard is comparatively inexpensive, at least in comparison to the costs that arise when changing the tools for producing the shells 5, 6.

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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)
  • Surgical Instruments (AREA)

Abstract

The muffler has a housing (2) with an upper shell (5), a lower shell (6), an intake opening (3) and an exhaust opening (4). The intake opening that is formed in a base (9) is introduced between the upper and lower shells and forms an integral part of the housing. The exhaust opening that is formed in the lower shell is arranged along a dividing line (7), at which the shells are attached together. An independent claim is also included for a modular system for manufacturing a muffler.

Description

Die vorliegende Erfindung betrifft einen Schalldämpfer für eine Abgasanlage einer Brennkraftmaschine, insbesondere eines Kraftfahrzeugs. Die vorliegende Erfindung betrifft außerdem ein Baukastensystem zum Herstellen eines derartigen Schalldämpfers.The present invention relates to a silencer for an exhaust system of an internal combustion engine, in particular of a motor vehicle. The present invention also relates to a modular system for producing such a silencer.

Ein üblicher Schalldämpfer dieser Art (wie z.B. in EP 0 856 647 A1 gezeigt) besitzt ein Gehäuse, das eine Oberschale und eine Unterschale sowie wenigstens eine Einlassöffnung und wenigstens eine Auslassöffnung aufweist. An jede Einlassöffnung ist ein Einlassrohr anschließbar, und an jede Auslassöffnung ist ein Auslassrohr anschließbar. Auf diese Weise kann der Schalldämpfer in eine Abgasanlage eingebaut werden. Üblicherweise befindet sich die jeweilige Einlassöffnung und/oder die jeweilige Auslassöffnung im Bereich einer Trennlinie, entlang der die beiden Schalen aneinander befestigt sind. Die jeweilige Öffnung ist somit zwischen den beiden Schalen angeordnet und von beiden Schalen teilweise umfasst.A common silencer of this type (such as in EP 0 856 647 A1 shown) has a housing which has an upper shell and a lower shell and at least one inlet opening and at least one outlet opening. An inlet tube can be connected to each inlet opening, and an outlet tube can be connected to each outlet opening. In this way, the muffler can be installed in an exhaust system. Usually, the respective inlet opening and / or the respective outlet opening is located in the region of a parting line along which the two shells are fastened to one another. The respective opening is thus arranged between the two shells and partially covered by the two shells.

Um einen derartigen Schalldämpfer an unterschiedliche Abgasanlagen, die sich durch Anzahl und/oder Geometrie und/oder Positionierung der Einlassrohre und/oder der Auslassrohre voneinander unterscheiden, anpassen zu können, müssen Oberschale und Unterschale in entsprechender Weise adaptiert werden. Da es sich bei den Schalen üblicherweise um Blechformteile handelt, sind mit dieser Adaption erhebliche Werkzeugkosten verbunden.To such a muffler to different exhaust systems, which differ by number and / or geometry and / or To be able to adjust the positioning of the inlet pipes and / or the outlet pipes from one another, the upper shell and lower shell must be adapted in a corresponding manner. Since the trays are usually formed sheet metal parts, this adaptation involves considerable tooling costs.

Die vorliegende Erfindung beschäftigt sich mit dem Problem, für einen Schalldämpfer der eingangs genannten Art einen Weg aufzuzeigen, der insbesondere die Variantenbildung vereinfacht.The present invention is concerned with the problem of finding a way for a muffler of the type mentioned, which in particular simplifies the formation of variants.

Dieses Problem wird erfindungsgemäß durch die Gegenstände der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This problem is solved according to the invention by the subject matters of the independent claims. Advantageous embodiments are the subject of the dependent claims.

Die Erfindung beruht auf dem allgemeinen Gedanken, das Gehäuse zusätzlich mit einem Boden auszustatten, der zwischen Oberschale und Unterschale eingesetzt ist und der zumindest eine der Öffnungen des Gehäuses enthält. Um nun unterschiedliche Konfigurationen der dem Boden zugeordneten wenigstens einen Öffnung hinsichtlich Anzahl und/oder Geometrie und/oder Positionierung zu realisieren, muss beim erfindungsgemäßen Schalldämpfer nur noch der Boden adaptiert werden, während Oberschale und Unterschale unverändert bleiben können. Die relativ teuren Werkzeuge zur Herstellung der Schalen können somit weiter genutzt werden, während lediglich ein relativ preiswertes Werkzeug zur Herstellung des Bodens adaptiert werden muss. Durch die erfindungsgemäß vorgeschlagene Bauweise lassen sich somit relativ preiswert unterschiedliche Schalldämpfer-Typen realisieren, die an unterschiedliche Abgasanlagen angepasst sind.The invention is based on the general idea to equip the housing additionally with a bottom which is inserted between the upper shell and lower shell and which contains at least one of the openings of the housing. In order to realize different configurations of the at least one opening associated with the floor in terms of number and / or geometry and / or positioning, only the floor needs to be adapted in the silencer according to the invention, while the upper shell and lower shell can remain unchanged. The relatively expensive tools for the production of the shells can thus continue to be used, while only a relatively inexpensive tool for the production of the soil must be adapted. By the invention proposed Construction can thus relatively inexpensive different types of silencers realize that are adapted to different exhaust systems.

Bei einer bevorzugten Weiterbildung ist zumindest eine der anderen dieser Öffnungen in einer der Schalen ausgebildet und von einer Trennlinie, entlang der die Schalen aneinander befestigt sind, beabstandet angeordnet. Diese Ausführungsform nutzt zum einen die Erkenntnis, dass sich die unterschiedlichen Abgasanlagen in der Regel nur einlassseitig oder auslassseitig voneinander unterscheiden. Dementsprechend kann die bei den Varianten gleich bleibende Öffnung in einer der Schalen ausgebildet werden. Dies hat zum anderen den Vorteil, dass die Trennlinie geometrisch besonders einfach ausfällt und die Verbindung der beiden Schalen entlang der Trennlinie entsprechend einfach realisiert werden kann. Dies hat ebenfalls eine vereinfachte, insbesondere automatisierte, und somit preiswertere Herstellung des Schalldämpfers zur Folge.In a preferred development, at least one of the other of these openings is formed in one of the shells and spaced from a parting line along which the shells are attached to each other. On the one hand, this embodiment uses the knowledge that the different exhaust systems usually differ from one another only on the inlet side or exhaust side. Accordingly, in the variants, the same opening can be formed in one of the shells. On the other hand, this has the advantage that the dividing line is geometrically particularly simple and the connection of the two shells along the dividing line can be correspondingly easily realized. This also has a simplified, in particular automated, and thus cheaper production of the muffler result.

Bei einer besonders preiswerten Ausführungsform ist der Boden eben ausgestaltet und mit einem umlaufenden und abgewinkelten Außenrand ausgestattet. Entlang diesem Außenrand ist der Boden dann an den Schalen befestigt. Diese Ausführungsform besitzt eine einfache Geometrie, lässt sich daher einfach herstellen, wobei gleichzeitig das hierzu erforderliche Werkzeug vergleichsweise preiswert realisierbar ist.In a particularly low-cost embodiment, the floor is designed just and equipped with a circumferential and angled outer edge. Along this outer edge of the soil is then attached to the shells. This embodiment has a simple geometry, can therefore be easily manufactured, while at the same time the tool required for this purpose is comparatively inexpensive feasible.

Bei einer anderen, besonders vorteilhaften Ausführungsform besitzt der Boden eine größere Wandstärke als die Schalen. Diese Bauweise nutzt die Erkenntnis, dass der Boden das Gehäuse im Bereich der zugeordneten, wenigstens einen Öffnung signifikant aussteift. Diese Verstärkung in der Struktur des Gehäuses durch den Boden kann durch eine Reduzierung der Materialstärke bei den Schalen zu einer erheblichen Gewichtseinsparung beim erfindungsgemäßen Schalldämpfer genutzt werden.In another, particularly advantageous embodiment, the bottom has a greater wall thickness than the shells. This design makes use of the knowledge that the bottom significantly reinforces the housing in the region of the associated, at least one opening. This reinforcement in the structure of the housing through the floor can be used by reducing the material thickness of the shells to a considerable weight saving in the silencer according to the invention.

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
eine vereinfachte Seitenansicht auf einen Schalldämpfer nach der Erfindung,
Fig. 2
eine Draufsicht auf einen Boden eines Gehäuses des Schalldämpfers,
Fig. 3
eine Ansicht wie in Fig. 2, jedoch bei einer anderen Ausführungsform.
Show, in each case schematically,
Fig. 1
a simplified side view of a muffler according to the invention,
Fig. 2
a plan view of a bottom of a housing of the muffler,
Fig. 3
a view as in Fig. 2, but in another embodiment.

Entsprechend Fig. 1 umfasst ein erfindungsgemäßer Schalldämpfer 1 ein Gehäuse 2 zur Unterbringung einer nicht gezeigten, konventionellen Schalldämpferstruktur. Der Schalldämpfer 1 ist für den Einbau in eine nicht gezeigte Abgasanlage einer Brennkraftmaschine, insbesondere eines Kraftfahrzeugs, geeignet. Zu diesem Zweck ist sein Gehäuse 2 mit wenigstens einer Einlassöffnung 3 und mit wenigstens einer Auslassöffnung 4 ausgestattet. An die wenigstens eine Einlassöffnung 3 ist wenigstens ein Einlassrohr der Abgasanlage anschließbar. In entsprechender Weise ist an die wenigstens eine Auslassöffnung 4 wenigstens ein Auslassrohr der Abgasanlage anschließbar.According to FIG. 1, a silencer 1 according to the invention comprises a housing 2 for accommodating a conventional silencer structure (not shown). The muffler 1 is suitable for installation in an exhaust system, not shown, of an internal combustion engine, in particular of a motor vehicle. For this purpose, its housing 2 is equipped with at least one inlet opening 3 and with at least one outlet opening 4. At least one inlet pipe of the exhaust system can be connected to the at least one inlet opening 3. In a corresponding manner, at least one outlet pipe of the exhaust system can be connected to the at least one outlet opening 4.

Das Gehäuse 2 weist eine Oberschale 5 und eine Unterschale 6 auf, die entlang einer Trennlinie 7 aneinander befestigt sind, vorzugsweise durch eine Schweißverbindung und/oder Lötverbindung. Die Begriffe "Oberschale" und "Unterschale" beziehen sich nicht zwangsläufig auf die jeweilige Einbausituation, sondern auf die in Fig. 1 wiedergegebene Darstellung, in der die Oberschale 5 oben und die Unterschale 6 unten angeordnet sind.The housing 2 has an upper shell 5 and a lower shell 6, which are fastened to one another along a parting line 7, preferably by a welded joint and / or solder joint. The terms "upper shell" and "lower shell" do not necessarily refer to the respective installation situation, but to the illustration reproduced in FIG. 1, in which the upper shell 5 above and the lower shell 6 are arranged below.

Im Bereich der Trennlinie 7 ist an jeder Schale 5, 6 ein nach außen abgewinkelter Bund 8 ausgeformt, über die die Schalen 5, 6 entlang der Trennlinie 7 aneinander anliegen und aneinander befestigt sind.In the region of the dividing line 7, an outwardly angled collar 8 is formed on each shell 5, 6, over which the shells 5, 6 abut each other along the dividing line 7 and are fastened to one another.

Erfindungsgemäß ist das Gehäuse 2 außerdem mit einem Boden 9 ausgestattet, der hier die wenigstens eine Einlassöffnung 3 enthält. Grundsätzlich kann bei einer alternativen Ausführungsform der Boden 9 die wenigstens eine Auslassöffnung 4 enthalten. Ebenso ist es grundsätzlich möglich, einen die wenigstens eine Einlassöffnung 3 aufweisenden Einlassboden 9 sowie einen die wenigstens eine Auslassöffnung 4 enthaltenden Auslassboden vorzusehen. Bevorzugt wird jedoch die hier gezeigte Ausführungsform, bei welcher nur ein Boden 9 vorgesehen ist, der die wenigstens eine Einlassöffnung 3 enthält.According to the invention, the housing 2 is also provided with a bottom 9, which here contains the at least one inlet opening 3. In principle, in an alternative embodiment, the bottom 9 may contain the at least one outlet opening 4. Likewise, it is basically possible to provide an inlet bottom 9 having the at least one inlet opening 3 and an outlet floor containing the at least one outlet opening 4. However, preferred is the embodiment shown here, in which only one bottom 9 is provided which contains the at least one inlet opening 3.

Der Boden 9 ist zwischen Oberschale 5 und Unterschale 6 eingesetzt und bildet einen Bestandteil des Gehäuses 2. Das heißt, die Außenhaut des Gehäuses 2 wird somit durch Oberschale 5, Unterschale 6 und Boden 9 gebildet.The bottom 9 is inserted between the upper shell 5 and the lower shell 6 and forms part of the housing 2. That is, the outer skin of the housing 2 is thus formed by the upper shell 5, lower shell 6 and bottom 9.

Der Boden 9 ist vorzugsweise eben und erstreckt sich somit in einer nicht näher bezeichneten Bodenebene. Der Boden 9 weist einen Außenrand 10 auf, der nach außen abgewinkelt und geschlossen umlaufend angeordnet ist. Der Außenrand 10 liegt dabei am Bund 8 der Oberschale 5 sowie am Bund 8 der Unterschale 6 an und ist über diese Bünde 8 an den Schalen 5, 6 befestigt, zweckmäßig mittels Lötverbindung und/oder Schweißverbindung.The bottom 9 is preferably flat and thus extends in an unspecified ground plane. The bottom 9 has an outer edge 10, which is angled outwardly and closed circumferentially arranged. The outer edge 10 lies on the collar 8 of the upper shell 5 and the collar 8 of the lower shell 6 and is attached via these collars 8 to the shells 5, 6, suitably by means of soldered connection and / or welded connection.

Bei der hier gezeigten, bevorzugten Ausführungsform ist die wenigstens eine andere Öffnung, also hier die wenigstens eine Auslassöffnung 4 in einer der beiden Schalen 5, 6, hier in der Unterschale 6 ausgebildet und dabei so angeordnet, dass sie von der Trennlinie 7 beabstandet ist. Hierdurch ergibt sich für die Trennlinie 7 eine besonders einfache Geometrie. Gleichzeitig wird dadurch das Herstellen einer Verbindung zwischen Oberschale 5 und Unterschale 6 entlang der Trennlinie 7 vereinfacht.In the preferred embodiment shown here, the at least one other opening, that is to say here the at least one outlet opening 4 in one of the two shells 5, 6, is formed here in the lower shell 6 and arranged so that it is spaced from the parting line 7. This results in a particularly simple geometry for the dividing line 7. At the same time thereby making a connection between the upper shell 5 and lower shell 6 along the dividing line 7 is simplified.

Die Trennlinie 7 erstreckt sich außerhalb des Bodens 9 vorzugsweise in einer Trennebene 11, die in Fig. 1 durch eine strichpunktierte Linie angedeutet ist. Zweckmäßig ist der Boden 9 so in das Gehäuse 2 integriert, dass sich die Bodenebene im wesentlichen senkrecht zur Trennebene 11 erstreckt. Die Bodenebene ist somit gegenüber der Trennebene 11 etwa um 90° geneigt. Andere steile Neigungswinkel zwischen 75° bis 105°, vorzugsweise zwischen 80° und 100°, sind ebenfalls denkbar.The dividing line 7 extends outside of the bottom 9 preferably in a parting plane 11, which is indicated in Fig. 1 by a dashed line. Suitably, the bottom 9 is integrated into the housing 2 such that the bottom plane extends substantially perpendicular to the parting plane 11. The ground plane is thus inclined relative to the parting plane 11 approximately at 90 °. Other steep angles of inclination between 75 ° to 105 °, preferably between 80 ° and 100 °, are also conceivable.

Die Schalen 5, 6 und der Boden 9 sind vorzugsweise als Blechformteile ausgestaltet. Gemäß einer vorteilhaften Ausgestaltungsform weisen die Schalen 5, 6 eine kleinere Wandstärke auf als der Boden 9. Hierdurch kann das Gewicht des Gehäuses 2 signifikant reduziert werden. Ermöglicht wird dies durch die mit dem Einbau des Bodens 9 einhergehende Versteifung des Gehäuses 2, was eine Reduzierung der Wandstärke bei den Schalen 5, 6 zulässt, ohne dass eine gewünschte Mindeststeifigkeit oder Mindestfestigkeit für das Gehäuse 2 unterschritten wird. Beispielsweise ist die Wandstärke des Bodens 9 50% bis 100% größer als die Wandstärke der Schalen 5, 6.The shells 5, 6 and the bottom 9 are preferably designed as shaped sheet metal parts. According to an advantageous embodiment, the shells 5, 6 have a smaller wall thickness than the bottom 9. In this way, the weight of the housing 2 can be significantly reduced. This is possible this by the associated with the installation of the bottom 9 stiffening of the housing 2, which allows a reduction of the wall thickness in the shells 5, 6, without a desired minimum stiffness or minimum strength for the housing 2 is exceeded. For example, the wall thickness of the bottom 9 is 50% to 100% greater than the wall thickness of the shells 5, 6.

An der Unterschale 6 ist zur Einfassung der wenigstens einen Auslassöffnung 4 ein nach außen ausgestellter Kragen 12 ausgeformt. In die wenigstens eine Auslassöffnung 4 bzw. in deren Kragen 12 ist jeweils ein hier nicht erkennbarer, innen liegender Auslassrohrabschnitt eingesetzt und fest mit dem Kragen 12 verbunden, z. B. durch Verlöten und/oder durch Verschweißen.On the lower shell 6, an outwardly flared collar 12 is formed to surround the at least one outlet opening 4. In the at least one outlet opening 4 or in the collar 12 each one not visible here, inner lying outlet pipe section is used and firmly connected to the collar 12, z. B. by soldering and / or by welding.

In entsprechender Weise ist auch die wenigstens eine Einlassöffnung 3 von einem Kragen 13 eingefasst, der nach außen vom Boden 9 absteht. Im montierten Zustand ist in die wenigstens eine Einlassöffnung 3 bzw. in deren Kragen 13 jeweils ein hier nicht näher bezeichneter, innen liegender Einlassrohrabschnitt eingesteckt, der mit dem Kragen 13 fest verbunden ist, beispielsweise durch Verlöten und/oder Verschweißen.In a corresponding manner, the at least one inlet opening 3 is bordered by a collar 13, which protrudes outwardly from the bottom 9. In the mounted state, in each case an inwardly designated inlet pipe section is inserted into the at least one inlet opening 3 or into its collar 13, which is firmly connected to the collar 13, for example by soldering and / or welding.

Der erfindungsgemäße Schalldämpfer 1 kann vorzugsweise wie folgt hergestellt werden:The silencer 1 according to the invention can preferably be produced as follows:

In die Unterschale 6 wird die komplette Schalldämpferstruktur eingesetzt, wobei wenigstens ein innen liegender Auslassrohrabschnitt von innen in die wenigstens eine Auslassöffnung 4 bzw. in deren Kragen 12 eingesetzt wird. Anschlie-βend wird der Boden 9 angesetzt, wobei er auf wenigstens einen innen liegenden Einlassrohrabschnitt so aufgesetzt wird, dass der jeweilige Einlassrohrabschnitt in die jeweilige Einlassöffnung 3 des Bodens 9 bzw. in deren Kragen 13 eingesteckt ist. Anschließend wird die Oberschale 5 aufgesetzt. Danach können die aufeinander liegenden Bünde 8 entlang der Trennlinie 7 miteinander verbunden werden. Die Bünde 8 können außerdem mit dem Außenrand 10 verbunden werden. Des Weiteren können der wenigstens eine innere Einlassrohrabschnitt mit dem Kragen 12 der wenigstens einen Auslassöffnung 4 und der wenigstens eine innere Einlassrohrabschnitt mit dem Kragen 13 der wenigstens einen Einlassöffnung 3 verbunden werden.In the lower shell 6, the complete muffler structure is used, wherein at least one inner outlet pipe section is inserted from the inside into the at least one outlet opening 4 and in the collar 12 thereof. Subsequently, the bottom 9 is attached, wherein it is placed on at least one inner inlet pipe section so that the respective inlet pipe section is inserted into the respective inlet opening 3 of the bottom 9 or in the collar 13 thereof. Subsequently, the upper shell 5 is placed. Thereafter, the superposed frets 8 along the dividing line 7 can be interconnected. The collars 8 can also be connected to the outer edge 10. Furthermore, the at least one inner inlet pipe section can be connected to the collar 12 of the at least one outlet opening 4 and the at least one inner inlet pipe section can be connected to the collar 13 of the at least one inlet opening 3.

Zweckmäßig ist die jeweilige Einlassöffnung 3 am Boden 9 so angeordnet, dass sie bzw. ihr Kragen 13 in jeder Richtung vom Außenrand 10 beabstandet ist. Dies vereinfacht die Ausbildung des Außenrands 10 sowie die Herstellung der Verbindung zwischen dem Außenrand 10 und den Bünden 8 der Schalen 5 und 6.Suitably, the respective inlet opening 3 at the bottom 9 is arranged so that it or its collar 13 is spaced in each direction from the outer edge 10. This simplifies the formation of the outer edge 10 and the preparation of the connection between the outer edge 10 and the collars 8 of the shells 5 and 6.

Entsprechend den Fig. 2 und 3 können zur Realisierung eines Baukastensystems, mit dessen Hilfe unterschiedliche Varianten des Schalldämpfers 1 hergestellt werden können, zumindest zwei verschiedene Böden 9 bereitgestellt werden. Die beiden Böden 9 unterscheiden sich voneinander durch die Anzahl und/oder durch die Geometrie und/oder durch die Position der dem jeweiligen Boden 9 zugeordneten, wenigstens einen Öffnung, hier der wenigstens einen Einlassöffnung 3. Beispielhaft zeigt der in Fig. 2 wiedergegebene Boden 9 nur eine Einlassöffnung 3, die einen vergleichsweise großen Querschnitt aufweist. Im Unterschied dazu zeigt Fig. 3 einen anderen Boden 9, der zwei Einlassöffnungen 3 aufweist, die jeweils einen kleineren Querschnitt als bei der in Fig. 2 gezeigten Variante aufweisen. Des Weiteren sind die beiden Einlassöffnungen 3 bei der Ausführungsform gemäß Fig. 3 etwas weiter unten angeordnet als die eine Einlassöffnung 3 bei der Variante gemäß Fig. 2.According to FIGS. 2 and 3, at least two different trays 9 can be provided for realizing a modular system with the aid of which different variants of the silencer 1 can be produced. The Both bottoms 9 differ from each other by the number and / or by the geometry and / or by the position of the respective bottom 9 associated, at least one opening, here the at least one inlet opening 3. By way of example, reproduced in Fig. 2 bottom 9 only an inlet opening 3, which has a comparatively large cross-section. In contrast, Fig. 3 shows another bottom 9, which has two inlet openings 3, each having a smaller cross section than in the variant shown in Fig. 2. Furthermore, in the embodiment according to FIG. 3, the two inlet openings 3 are arranged somewhat further down than the one inlet opening 3 in the variant according to FIG. 2.

Die Ausführungsform gemäß Fig. 2 lässt sich somit bei einer einflutigen Abgasanlage verwenden, während die Ausführung gemäß Fig. 3 für eine zweiflutige Abgasanlage geeignet ist. Bei einer zweiflutigen Abgasanlage führen zwei separate Abgasrohre, hier Einlassrohre zum Schalldämpfer 1, wobei sich die separaten Abgasströme zweckmäßig im Schalldämpfer 1, der hier vorzugsweise als Nachschalldämpfer ausgebildet ist, zu einem gemeinsamen Abgasstrom vereinen. Dementsprechend ist dann sowohl bei der einflutigen Abgasanlage als auch bei der zweiflutigen Abgasanlage nur eine einzige Auslassöffnung 4 erforderlich.The embodiment of FIG. 2 can thus be used in a single-flow exhaust system, while the embodiment of FIG. 3 is suitable for a dual-flow exhaust system. In a dual-flow exhaust system lead two separate exhaust pipes, here inlet pipes to the muffler 1, wherein the separate exhaust gas streams suitably unite in the muffler 1, which is preferably designed here as a rear muffler to a common exhaust stream. Accordingly, only a single outlet opening 4 is then required both in the single-flow exhaust system and in the twin-flow exhaust system.

Das erfindungsgemäße Baukastensystem ermöglicht es nun, den Schalldämpfer 1 entweder mit dem in Fig. 2 gezeigten Boden 9 zur Anpassung an eine einflutige Abgasanlage oder mit dem in Fig. 3 gezeigten Boden 9 zur Anpassung an eine zweiflutige Abgasanlage zusammenzubauen. Ebenso sind grundsätzlich weitere Varianten für den Boden 9 vorstellbar. Beispielsweise kann bei anderen Varianten die wenigstens eine Einlassöffnung 3 einen elliptischen Querschnitt aufweisen.The modular system according to the invention makes it possible now, the muffler 1 either with the bottom 9 shown in FIG. 2 for adaptation to a single-flow exhaust system or with the in Fig. 3 shown to assemble floor 9 for adaptation to a dual-flow exhaust system. Likewise, in principle, further variants for the bottom 9 are conceivable. For example, in other variants, the at least one inlet opening 3 have an elliptical cross section.

Die Böden 9 des Baukastensystems charakterisieren sich dadurch, dass sie trotz aller Unterschiede bezüglich der darin ausgestalteten wenigstens einen Öffnung (hier der wenigstens einen Einlassöffnung 3) stets geometrisch denselben Außenrand 10 aufweisen. Dadurch ist es möglich, die unterschiedlichen Böden 9 alternativ zwischen den Schalen 5, 6 in das Gehäuse 2 einzubauen, ohne dass hierzu die Schalen 5, 6 adaptiert werden müssen. Es ist klar, dass die in das Gehäuse 2 einzubauende Schalldämpferstruktur je nach Boden 9 unterschiedlich modifiziert sein kann. Eine diesbezügliche Anpassung ist jedoch vergleichsweise preiswert, zumindest im Vergleich zu den Kosten, die bei einer Änderung der Werkzeuge zum Herstellen der Schalen 5, 6 entstehen.The trays 9 of the modular system are characterized by the fact that, despite all the differences in the at least one opening (here the at least one inlet opening 3) formed therein, they always have the same outer edge 10 geometrically. This makes it possible to install the different trays 9 alternatively between the shells 5, 6 in the housing 2, without requiring the shells 5, 6 must be adapted. It is clear that the muffler structure to be installed in the housing 2 may be modified differently depending on the floor 9. However, an adaptation in this regard is comparatively inexpensive, at least in comparison to the costs that arise when changing the tools for producing the shells 5, 6.

Claims (8)

  1. A muffler for an exhaust system of an internal combustion engine, in particular in a motor vehicle,
    - having a housing (2) which has a top shell (5) and a bottom shell (6) plus at least one inlet opening (3) and at least one outlet opening (4),
    - whereby at least one of these openings (3) is designed in a bottom (9) that is inserted between the top shell (5) and the bottom shell (6) and forms a part of the housing (2).
  2. The muffler according to Claim 1,
    characterized in that
    at least one other of these openings (4) is designed in one of the shells (6) and is arranged at a distance from a dividing line (7) along which the shells (5, 6) are attached to one another.
  3. The muffler according to Claim 1 or 2,
    characterized in that
    the bottom (9) is flat and has a peripheral angled outside edge (10) along which the bottom (9) is attached to the shells (5, 6).
  4. The muffler according to any one of Claims 1 through 3,
    characterized in that
    the bottom (9) contains the at least one inlet opening (3).
  5. The muffler according to any one of Claims 1 through 4,
    characterized in that
    the bottom (9) has a greater wall thickness than the shells (5, 6).
  6. The muffler according to any one of Claims 1 through 5,
    characterized in that
    a dividing line (7) along which the shells (5, 6) are attached to one another is situated in a dividing plane (11).
  7. The muffler according to Claim 6,
    characterized in that
    the bottom (9) is situated in a bottom plane that is inclined by 80° to 100° with respect to the dividing plane (11).
  8. The modular system for manufacturing a muffler (1) according to any one of Claims 1 through 7,
    having at least two different bottoms (9) which can be inserted alternatively between the top shell (5) and the bottom shell (6) and which differ from each other through number and/or geometry and/or position of the at least one opening (3) designed in the respective bottom (9).
EP05111847A 2005-01-17 2005-12-08 Muffler Active EP1691050B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005002290A DE102005002290A1 (en) 2005-01-17 2005-01-17 Muffler for exhaust system of internal combustion engine in motor vehicle, has housing with upper and lower shells, exhaust opening and intake opening, which is formed in base and introduced between upper and lower shells

Publications (3)

Publication Number Publication Date
EP1691050A1 EP1691050A1 (en) 2006-08-16
EP1691050B1 true EP1691050B1 (en) 2007-08-15
EP1691050B2 EP1691050B2 (en) 2011-10-12

Family

ID=35945316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05111847A Active EP1691050B2 (en) 2005-01-17 2005-12-08 Muffler

Country Status (4)

Country Link
EP (1) EP1691050B2 (en)
AT (1) ATE370318T1 (en)
DE (2) DE102005002290A1 (en)
ES (1) ES2290859T5 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012204114B4 (en) * 2012-03-15 2015-03-26 Eberspächer Exhaust Technology GmbH & Co. KG Muffler unit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945460A (en) * 1974-09-03 1976-03-23 Arvin Industries, Inc. Muffler with rupture control means
CA2072947A1 (en) * 1991-07-08 1993-01-09 Willem Denis Maria Stuer Method for producing a device for muffling sound or catalytic treatment of exhaust
EP0856647B1 (en) * 1997-02-04 2003-05-14 Ap Parts Manufacturing Company Muffler with stamped internal plates defining tubes and separating chambers
US5739484A (en) * 1997-03-12 1998-04-14 Jones; Mack L. Exhaust muffler
GB9723148D0 (en) † 1997-11-04 1998-01-07 Eurotex Thermal Engineering Li Sound muffling material and method of making thereof
US6415889B1 (en) * 1998-01-30 2002-07-09 Arvinmeritor, Inc. Stamped-formed muffler apparatus and assembly process

Also Published As

Publication number Publication date
EP1691050A1 (en) 2006-08-16
ES2290859T5 (en) 2012-01-25
ATE370318T1 (en) 2007-09-15
ES2290859T3 (en) 2008-02-16
EP1691050B2 (en) 2011-10-12
DE502005001245D1 (en) 2007-09-27
DE102005002290A1 (en) 2006-07-27

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