EP0022063A1 - Exhaust gas outlet device for internal combustion engines and method for its manufacture - Google Patents

Exhaust gas outlet device for internal combustion engines and method for its manufacture Download PDF

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Publication number
EP0022063A1
EP0022063A1 EP80810177A EP80810177A EP0022063A1 EP 0022063 A1 EP0022063 A1 EP 0022063A1 EP 80810177 A EP80810177 A EP 80810177A EP 80810177 A EP80810177 A EP 80810177A EP 0022063 A1 EP0022063 A1 EP 0022063A1
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EP
European Patent Office
Prior art keywords
sleeve
exhaust pipe
parts
sleeve parts
silencer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP80810177A
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German (de)
French (fr)
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EP0022063B1 (en
Inventor
Jean Hardt
Jakob Widrig
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
Schweizerische Aluminium AG
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Application filed by Alusuisse Holdings AG, Schweizerische Aluminium AG filed Critical Alusuisse Holdings AG
Priority to AT80810177T priority Critical patent/ATE6290T1/en
Publication of EP0022063A1 publication Critical patent/EP0022063A1/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
    • F01N13/1838—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
    • 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
    • F01N13/16—Selection of particular materials
    • 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
    • F01N13/1844—Mechanical joints
    • F01N13/185—Mechanical joints the connection being realised by deforming housing, tube, baffle, plate, or parts thereof
    • 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
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/28—Methods or apparatus for fitting, inserting or repairing different elements by using adhesive material, e.g. cement
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/08—Surface coverings for corrosion prevention
    • 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
    • F01N2530/00—Selection of materials for tubes, chambers or housings
    • F01N2530/06—Aluminium or alloys thereof

Definitions

  • the invention relates to a device for discharging the exhaust gases of internal combustion engines with at least one sleeve-like muffler comprising an exhaust pipe and forming an interior from at least two interconnected parts, the exhaust pipe possibly having perforations in the interior of the muffler and, if appropriate, sound absorbers being arranged.
  • They usually consist of steel, sheet steel or chrome steel sheet and in some cases are provided with a corrosion-protective surface coating.
  • the inventor has set itself the goal of developing a device of the type mentioned at the outset which is easy and inexpensive to manufacture, is light in weight, shows little susceptibility to corrosion and reduces the number of susceptible weld seams.
  • the sleeve parts of the muffler and possibly the exhaust pipe and / or the sound absorbers consist of aluminum and / or an aluminum alloy.
  • this design has the advantage that the durability of the device is significantly improved by the high corrosion resistance of the aluminum.
  • the lower mass of aluminum compared to the previously used manufacturing materials causes a significant reduction in the problems of vibration fracture.
  • the exhaust pipe is preferably produced by means of extrusion, the sound absorbers by means of cold extrusion or deep drawing or the like.
  • the inventive idea also includes that the Ab - gas pipe and / or optionally of the sound absorbers made of steel or chromium steel with the coating and is used only for the production of the sleeve parts of the silencer aluminum.
  • the sleeve parts consist of preferably extruded hollow bodies with cylindrical or Egyptian shapes, deep-drawing or a grain also being used as the production process combination of deep drawing and ironing techniques comes into question.
  • the sleeve parts are positively and / or non-positively connected to one another. This connection is preferably made radially to the longitudinal axis of the sleeve parts, since the seam is as short as possible and the vibrations can be better absorbed.
  • the sleeve parts are provided at the end with seamless tapering approaches which can be produced both during extrusion and during deep drawing.
  • a sleeve, which surrounds the exhaust pipe, is seamlessly molded onto each of these tapering approaches. This avoids the frequent breaking point between the muffler and the exhaust pipe, which usually consists of a weld seam in the known exhaust systems, and also increases the adhesion of the two parts to one another.
  • a coupling area is preferably formed, in which one sleeve part has a ring edge radially offset on an annular shoulder, against which the edge area of the other sleeve part rests on the inside or outside.
  • the ring shoulder serves as a slide-in limitation.
  • the profiling and thus the connection of the two sleeve parts by means of the Magneform process is carried out either by placing a workpiece with the desired profile on the inner surface of the muffler or by pre-profiling the inserted sleeve part. In both cases, the existing profile is transferred to the non-profiled part (s) by applying the Magneform tool.
  • Magneform process also allows an easy and inexpensive connection of the sleeves and the exhaust pipe, with an adhesive optionally being introduced between the two to produce an airtight seal.
  • a silencer R according to FIG. 2 consists of a sleeve 1 encompassing a tube 4, which can be dismantled into a sleeve part 2 with a wall 6 and a sleeve part 3 with a wall 7.
  • the sleeve parts 2, 3 can have a cylindrical or oval cross section Q, the wall 6 of the sleeve part 2 having a shoulder-like shoulder 9 at one end, through which the opening cross section Q of the sleeve part 2 is increased by approximately the size of a wall thickness and a coupling area B is formed. The sleeve part 3 is inserted into this coupling area B.
  • the opening cross section Q is reduced by tapering shoulders 16, which are followed by sleeves 10, on the inner wall 11 of which part of the tube wall 5 of the tube 4 abuts.
  • a workpiece 14 preferably made of steel, is placed on the inner wall 11 of the sleeve part 3, which has a profile 15 in the coupling region B, which has the walls 6 and 7 of the sleeve parts 2 and match 3.
  • Fig. 3 offers three connection options for both sleeve parts 2 and 3.
  • the wall 7 of the sleeve part 3 is pre-profiled, while the wall 6 of the sleeve part 2 adjusts to this profile or is adjusted by means of magnetic deformation.
  • connection of the two sleeve parts 2 and 3 is produced in a coupling area B 2 by welding or gluing.
  • connection can, however, also be made by laying together and gluing or the like of folded edges of the two sleeve parts 2 and 3 or by taking an impression 20 of the Sleeve part 3 engages in a groove 21 formed by the sleeve part 2.
  • the tube 4 has openings 12 within the interior space encompassed by both sleeve parts.
  • sound absorbers are arranged in the interior 13 - not shown - can also consist of known inserts and other muffler systems known today can also be used.

Abstract

A device for conducting away exhaust gases from internal combustion engines comprises at least one sleeve-shaped silencer which encloses an exhaust pipe and forms an enclosed space around said exhaust pipe. The silencer is made up of at least two sleeve-shaped parts, or of a sleeve-shaped part and base part, which are joined together. The portion of the exhaust pipe in the space inside the silencer features perforations and/or sound absorbing elements. The inside of the silencer may be fitted with sound absorbers. The sleeve-shaped parts of the silencer and, if desired, the exhaust pipe and/or the sound absorbers are made of aluminum and/or an aluminum alloy. The sleeve-shaped parts of the silencer are manufactured by impact extrusion, deep drawing or a similar method and are joined together preferably radial to their longitudinal axis. The ends these parts taper down to tube-shaped extensions which fit over the exhaust pipe. To join the sleeve-shaped parts and the tube-shaped extensions to the exhaust pipe a region is provided on which an interlocking profile is created by electromagnetic forces.

Description

Die Erfindung betrifft eine Vorrichtung zum Ableiten der Abgase von Verbrennungskraftmaschinen mit mindestens einem ein Abgasrohr umfangenden und einem Innenraum bildenden hülsenartigen Schalldämpfer aus wenigstens zwei miteinander verbundenen Teilen, wobei im Innenraum des Schalldämpfers das Abgasrohr unter Umständen Perforationen aufweist und gegebenenfalls Schallabsorber angeordnet sind.The invention relates to a device for discharging the exhaust gases of internal combustion engines with at least one sleeve-like muffler comprising an exhaust pipe and forming an interior from at least two interconnected parts, the exhaust pipe possibly having perforations in the interior of the muffler and, if appropriate, sound absorbers being arranged.

Auspuffanlagen sind für die meisten Arten von Verbrennungsmotoren bekannt und in einer Vielzahl von Formen und Ausprägungen auf dem Markt erhältlich.Exhaust systems are known for most types of internal combustion engines and are available on the market in a large number of shapes and configurations.

Sie bestehen in der Regel aus Stahl, Stahlblech oder Chromstahl- blech und sind in einigen Fällen mit einer korrosionsschützenden Oberflächenbeschichtung versehen.They usually consist of steel, sheet steel or chrome steel sheet and in some cases are provided with a corrosion-protective surface coating.

Trotz Korrosionsschutz bleibt die Lebensdauer dieser bekannten Auspuffanlagen ungenügend, da zum einen der verwendete Stahl korrosionsanfällig ist, das Gewicht der Anlage wesentlich erhöht und so Schwingungsbruchprobleme mit sich bringt; zum anderen werden die Auspuffanlagen beim Zusammenbau in der Regel mit einigen Schweissnähten versehen, die besonders bruch-und rissanfällig sind. Diese Anfälligkeit betrifft vor allem die in der Regel geschweisste Verbindung von Schalldämpfer und Abgasrohr, da dort die negativen Auswirkungen der Schwingung am grössten sind.Despite corrosion protection, the service life of these known exhaust systems remains inadequate because, on the one hand, the steel used is susceptible to corrosion, the weight of the system is increased significantly and thus brings about problems with vibration breakage; on the other hand, the exhaust systems are usually provided with some weld seams during assembly, which are particularly prone to breakage and cracking. This vulnerability primarily affects the usually welded connection between the muffler and the exhaust pipe, since this is where the negative effects of the vibration are greatest.

Verbesserungen am Stahl bezüglich dieser Nachteile, sei es durch eine Beimengung eines Legierungsstoffes oder eine Beschichtung, verteuern aber die Herstellung wiederum wesentlich, während die erreichten Vorteile gering sind.Improvements to the steel with regard to these disadvantages, be it through the addition of an alloy substance or a coating, however, make the production considerably more expensive, while the advantages achieved are small.

Der Erfinder hat sich zum Ziel gesetzt, eine Vorrichtung der eingangs erwähnten Art zu entwickeln, die leicht und preisgünstig herzustellen ist, ein geringes Gewicht aufweist, wenig Korrosionsanfälligkeit zeigt und die Anzahl der anfälligen Schweissnähte reduziert.The inventor has set itself the goal of developing a device of the type mentioned at the outset which is easy and inexpensive to manufacture, is light in weight, shows little susceptibility to corrosion and reduces the number of susceptible weld seams.

Die Lösung dieser Aufgabe wird dadurch bewerkstelligt, dass die Hülsenteile des Schalldämpfers und gegebenenfalls das Abgasrohr und/oder die Schallabsorber aus Aluminium und/oder einer Aluminiumlegierung bestehen.This object is achieved in that the sleeve parts of the muffler and possibly the exhaust pipe and / or the sound absorbers consist of aluminum and / or an aluminum alloy.

Diese Ausführung bringt zum einen den Vorteil mit, dass durch die hohe Korrosionbeständigkeit des Aluminiums die Lebensdauer der Vorrichtung wesentlich verbessert wird. Zum anderen bewirkt die gegenüber den bisher verwendeten Herstellungsstoffen geringere Masse von Aluminium eine erhebliche Verminderung der Schwingungsbruchprobleme.On the one hand, this design has the advantage that the durability of the device is significantly improved by the high corrosion resistance of the aluminum. On the other hand, the lower mass of aluminum compared to the previously used manufacturing materials causes a significant reduction in the problems of vibration fracture.

Aluminium und seine Legierungen sind ausserdem besonders gut verformbar, sodass auch die Herstellung kostengünstig erfolgt. Das Abgasrohr wird vorzugsweise mittels Strangpressen, die Schallabsorber mittels Kalt-Fliesspressen oder Tiefziehen oder dergleichen hergestellt.Aluminum and its alloys are also particularly easy to deform, so that they can also be manufactured inexpensively. The exhaust pipe is preferably produced by means of extrusion, the sound absorbers by means of cold extrusion or deep drawing or the like.

Der erfindungsgemässe Gedanke umfasst aber auch, dass das Ab- gasrohr und/oder die Schallabsorber aus Stahl oder Chromstahl gegebenenfalls mit Beschichtung bestehen und nur zur Herstellung der Hülsenteile des Schalldämpfers Aluminium verwendet wird.But the inventive idea also includes that the Ab - gas pipe and / or optionally of the sound absorbers made of steel or chromium steel with the coating and is used only for the production of the sleeve parts of the silencer aluminum.

Die Hülsenteile bestehen aus vorzugsweise fliessgepressten Hohlkörpern mit zylindrischen oder elyptischen Formen, wobei als Herstellungsverfahren auch die Tiefziehung oder eine Kombination von Tiefzieh- und Abstreckungstechniken in Frage kommt. Die Hülsenteile sind form- und/oder kraftschlüssig miteinander verbunden. Vorzugsweise geschieht diese Verbindung radial zur Längsachse der Hülsenteile, da damit die Nahtstelle eine möglichst geringe Länge aufweist und die Schwingungen besser abgefangen werden können.The sleeve parts consist of preferably extruded hollow bodies with cylindrical or Egyptian shapes, deep-drawing or a grain also being used as the production process combination of deep drawing and ironing techniques comes into question. The sleeve parts are positively and / or non-positively connected to one another. This connection is preferably made radially to the longitudinal axis of the sleeve parts, since the seam is as short as possible and the vibrations can be better absorbed.

Vorteilhafterweise ist vorgesehen, die Hülsenteile endseitig mit nahtlosen Verjüngungsansätze zu versehen, die sowohl beim Fliesspressen als auch beim Tiefziehen erzeugt werden können. An diese Verjüngungsansätze ist jeweils nahtlos eine Manschette angeformt, welche das Abgasrohr umgibt. Dadurch wird diehäufige Bruchstelle zwischen Schalldämpfer und Abgasrohr, die bei den bekannten Auspuffanlagen in der Regel aus einer Schweissnaht besteht, umgangen und zudem die Haftfähigkeit beider Teile zueinander erhöht.It is advantageously provided that the sleeve parts are provided at the end with seamless tapering approaches which can be produced both during extrusion and during deep drawing. A sleeve, which surrounds the exhaust pipe, is seamlessly molded onto each of these tapering approaches. This avoids the frequent breaking point between the muffler and the exhaust pipe, which usually consists of a weld seam in the known exhaust systems, and also increases the adhesion of the two parts to one another.

Zur Verbindung der Hülsenteile wird vorzugsweise ein Kupplungsbereich gebildet, in dem ein Hülsenteil einen an einer Ringschulter radial versetzten Ringrand aufweist, dem der Randbereich des anderen Hülsenteiles innen oder aussen anliegt. Dabei dient die Ringschulter als Einschubbegrenzung.To connect the sleeve parts, a coupling area is preferably formed, in which one sleeve part has a ring edge radially offset on an annular shoulder, against which the edge area of the other sleeve part rests on the inside or outside. The ring shoulder serves as a slide-in limitation.

An Stelle der erwähnten 2 Hülsenteile kann auch nur ein Hülsenteil und ein Bodenteil verwendet werden. Die Teile können nach erwähnter Art hergestellt und verbunden werden.Instead of the two sleeve parts mentioned, only one sleeve part and one base part can be used. The parts can be manufactured and connected in the manner mentioned.

Als besonders vorteilhaft erweist sich für die Verbindung beider Hülsenteile miteinander, für die Verbindung der Hülsenteile bzw. des Schalldämpfers mit dem Abgasrohr und/oder für die Verbindung der Schallabsorber mit dem Abgasrohr bzw. den Hülsenteilen die Anwendung des sogenannten Magneform-Verfahrens. Bei diesem Verfahren wird in einem Ladegerät elektrische Energie gespeichert und einem Werkzeug zugeführt, das dadurch für die Dauer von ca. 10 - 20 Mikrosekunden ein magnetisches Feld mit magnetischen Kräften von bis zu 50 000 PSI erzeugen kann und elektrisch leitendes Metall verformt.It has been found to be particularly advantageous for the connection of the two sleeve parts to one another, for the connection of the sleeve parts or the muffler to the exhaust pipe and / or for the connection of the sound absorbers to the exhaust pipe or the sleeve parts, the use of the so-called Magneform process. In this process, electrical energy is stored in a charger and fed to a tool, which can generate a magnetic field with magnetic forces of up to 50,000 PSI for a period of approx. 10 - 20 microseconds and deform electrically conductive metal.

Die Profilierung und damit Verbindung beider Hülsenteile mittels des Magneform-Verfahrens erfolgt entweder durch Anlegen eines mit dem gewünschten Profil versehenen Werkstückes an die Innenfläche des Schalldämpfers oder durch Vprprofilieruns des eingeschobenen Hülsenteils. In beiden Fällen wird durch Anlegung des Magneform-Werkzeuges das vorhandene Profil auf den bzw. die nichtprofilierten Teile übertragen.The profiling and thus the connection of the two sleeve parts by means of the Magneform process is carried out either by placing a workpiece with the desired profile on the inner surface of the muffler or by pre-profiling the inserted sleeve part. In both cases, the existing profile is transferred to the non-profiled part (s) by applying the Magneform tool.

Es ist aber auch vorgesehen, die Hülsenteile zu verkleben oder zu verschweissen bzw. durch Falzbildung oder Nut- und Federbildung zu verbinden.But it is also envisaged to glue or weld the sleeve parts or to connect them by forming folds or tongue and groove.

Die Verwendung des Magneform-Verfahrens erlaubt auch eine leichte und günstige Verbindung von Manschetten und Abgasrohr,wobei gegenbenenfalls zur Herstellung eines luftdichten Abschlusses ein Klebstoff zwischen beiden eingebracht ist.The use of the Magneform process also allows an easy and inexpensive connection of the sleeves and the exhaust pipe, with an adhesive optionally being introduced between the two to produce an airtight seal.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter-Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in

  • Fig.l einen Querschnitt durch einen Teil einer Auspuffanlage, geschnitten nach Linie I - I in Fig. 2
  • Fig.2 eine Seitenansicht eines Schalldämpfers, teilweise geschnitten nach Linie II - II in Fig. 1
  • Fig. 3 einen Ausschnitt aus Fig. 2 in vier Ausführungsbeispielen.
Further advantages, features and details of the invention emerge from the following description of preferred exemplary embodiments and with reference to the drawing; this shows in
  • Fig.l shows a cross section through part of an exhaust system, cut along line I - I in Fig. 2nd
  • 2 shows a side view of a muffler, partially cut along line II - II in Fig. 1st
  • Fig. 3 shows a detail from Fig. 2 in four embodiments.

Ein Schalldämpfer R besteht nach Fig. 2 aus einer ein Rohr 4 umfangenden Hülse 1, welche in einen Hülsenteil 2 mit einer Wandung 6 und einem Hülsenteil 3 mit einer Wandung 7 zerlegbar ist.A silencer R according to FIG. 2 consists of a sleeve 1 encompassing a tube 4, which can be dismantled into a sleeve part 2 with a wall 6 and a sleeve part 3 with a wall 7.

Die Hülsenteile 2,3 können einen zylindrischen oder ovalen Querschnitt Q besitzen, wobei die Wandung 6 des Hülsenteils 2 einends einen schulterartigen Absatz 9 aufweist, durch welchen der Oeffnungsquerschnitt Q des Hülsenteils 2 um etwa das Mass einer Wandstärke vergrössert und ein Kupplungsbereich B gebildet wird. In diesen Kupplungsbereich B ist das Hülsenteil 3 eingeschoben.The sleeve parts 2, 3 can have a cylindrical or oval cross section Q, the wall 6 of the sleeve part 2 having a shoulder-like shoulder 9 at one end, through which the opening cross section Q of the sleeve part 2 is increased by approximately the size of a wall thickness and a coupling area B is formed. The sleeve part 3 is inserted into this coupling area B.

An dem jeweils vom Kupplungsbereich B fernen Ende der Hülsenteile 2 und 3 verkleinert sich der Oeffnungsquerschnitt Q durch Verjüngungsabsätze 16, denen Maschetten 10 folgen, an deren Innenwandung 11 ein Teil der Rohrwandung 5 des Rohres 4 anliegt.At the end of the sleeve parts 2 and 3 which is distant from the coupling area B, the opening cross section Q is reduced by tapering shoulders 16, which are followed by sleeves 10, on the inner wall 11 of which part of the tube wall 5 of the tube 4 abuts.

Zwecks Verbindung beider Hülsenteile 2 und 3 mittels z.B eines Magneform-Verfahrens wird an die Innenwandung 11 des Hülsenteils 3 ein Werkstück 14, vorzugsweise aus Stahl, angelegt, das im Kupplungsbereich B eine Profilierung 15 aufweist, der sich die Wandungen 6 und 7 der Hülsenteile 2 und 3 angleichen.For the purpose of connecting the two sleeve parts 2 and 3 by means of, for example, a Magneform process, a workpiece 14, preferably made of steel, is placed on the inner wall 11 of the sleeve part 3, which has a profile 15 in the coupling region B, which has the walls 6 and 7 of the sleeve parts 2 and match 3.

Fig. 3 bietet drei Verbindungsmöglichkeiten beider Hülsenteile 2 und 3 an.Fig. 3 offers three connection options for both sleeve parts 2 and 3.

Bei einem Kupplungsbereich B1 ist die Wandung 7 des Hülsenteils 3 vorprofiliert, während sich die Wandung 6 des Hülsenteils 2 diesem Profil angleicht bzw. mittels Magneverformung angeglichen wird.In the case of a coupling area B1, the wall 7 of the sleeve part 3 is pre-profiled, while the wall 6 of the sleeve part 2 adjusts to this profile or is adjusted by means of magnetic deformation.

In einem weiteren Ausführungsbeispiels wird die Verbindung beider Hülsenteile 2 und 3 in einem Kupplungsbereich B2 durch Schweissen oder Verkleben hergestellt.In a further exemplary embodiment, the connection of the two sleeve parts 2 and 3 is produced in a coupling area B 2 by welding or gluing.

Die Verbindung kann aber auch durch ein Aneinanderlegen und Verkleben oder dergleichen von umgefalzten Kanten der beiden Hülsenteile 2 und 3 erfolgen oder indem eine Abformung 20 des Hülsenteils 3 in eine vom Hülsenteil 2 gebildete Nut 21 eingreift.The connection can, however, also be made by laying together and gluing or the like of folded edges of the two sleeve parts 2 and 3 or by taking an impression 20 of the Sleeve part 3 engages in a groove 21 formed by the sleeve part 2.

Das Rohr 4 weist innerhalb des von beiden Hülsenteilen umfangenen Innenraum 13 Durchbrüche 12 auf. Am Rohr 4 und den Wandungen 6,7 sind im Innenraum 13 - nicht dargestellte - Schallabsorber angeordnet, welche z.B. auch aus bekannten Einlagen bestehen können im weiteren können auch andere heute bekannte Schalldämpfersysteme zur Anwendung kommen.The tube 4 has openings 12 within the interior space encompassed by both sleeve parts. On the tube 4 and the walls 6, 7, sound absorbers are arranged in the interior 13 - not shown - can also consist of known inserts and other muffler systems known today can also be used.

Claims (9)

1. Vorrichtung zum Ableiten der Abgase von Verbrennungskraftmaschinen mit mindestens einem ein Abgasrohr umfangenden und einen Innenraum bildenden hülsenartigen Schalldämpfer aus wenigstens zwei miteinander verbundenen Teilen, wobei im Innenraum des Schalldämpfers das Abgasrohr Perforationen aufweist und gegebenenfalls Schallabsorber angeordnet sind,
dadurch gekennzeichnet,
dass die Hülsenteile (2,3) des Schalldämpfers (R) und gegebenenfalls das Abgasrohr (4) und/oder die Schallabsorber aus Aluminium und/oder einer Aluminiumlegierung bestehen.1.Device for discharging the exhaust gases of internal combustion engines with at least one sleeve-like muffler comprising an exhaust pipe and forming an interior from at least two parts connected to one another, the exhaust pipe having perforations in the interior of the muffler and, if appropriate, sound absorbers being arranged,
characterized,
that the sleeve parts (2, 3) of the muffler (R) and optionally the exhaust pipe (4) and / or the sound absorbers consist of aluminum and / or an aluminum alloy. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Hülsenteile (2,3) aus fliessgepressten oder tiefgezogenen bzw. tiefgezogenen abgestreckten Hohlkörpern bestehen sowie formschlüssig und/oder kraftschlüssig miteinander verbunden und mittels Manschetten (10) an das Abgasrohr (4) angelegt sind, welche durch endseitige nahtlose Verjüngungsansätze (16) an den Hohlkörper angeformt sind.2. Device according to claim 1, characterized in that the sleeve parts (2, 3) consist of extruded or deep-drawn or deep-drawn stretched hollow bodies and are connected to one another in a form-fitting and / or non-positive manner and are applied to the exhaust pipe (4) by means of sleeves (10) which are integrally formed on the hollow body by seamless tapering approaches (16) at the ends. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Hülsenteile (2,3) radial zu ihrer Längsachse (17) und dem Abgasrohr (4) miteinander verbunden sind.3. Device according to claim 1 or 2, characterized in that the sleeve parts (2, 3) are connected to one another radially to their longitudinal axis (17) and the exhaust pipe (4). 4. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Verbindung der Hülsenteile (2,3) in einem Kupplungsbereich (B) besteht, in welchem eines der Hülsenteile mit einem an einer Ringschulter (9) radial versetzten Ringrand dem Randbereich des anderen konzentrischen Hülsenteiles innen oder aussen anliegt und die Ringschulter (9) als Einschubbegrenzung dient.4. The device according to at least one of claims 1 to 3, characterized in that the connection of the sleeve parts (2,3) in a coupling region (B), in which one of the sleeve parts with an on a ring shoulder (9) radially offset ring edge the Edge area of the other concentric sleeve part inside or outside is applied and the ring shoulder (9) serves as a slide-in limitation. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Verbindung der Hülsenteile (2,3) aus einer mittels elektromagnetischen Kräften erzeugten Profilierung (15) des Kupplungsbereiches (B, B1) besteht, wobei gegebenenfalls an einer Innenwandung (11) eines Hülsenteiles (3) ein Werkstück (14) mit Profilierung angeordnet ist. 5. The device according to claim 4, characterized in that the connection of the sleeve parts (2, 3) consists of a profile (15) of the coupling region (B, B 1 ) generated by means of electromagnetic forces, optionally on an inner wall (11) of a sleeve part (3) a workpiece (14) with profiling is arranged. 6. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Verbindung der Hülsenteile (2,3) aus einer Schweissung oder Verklebung im Kupplungsbereich (B2) besteht.6. The device according to claim 4, characterized in that the connection of the sleeve parts ( 2, 3 ) consists of welding or gluing in the coupling area (B 2 ). 7. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Hülsenteil (3) mit einer Abformung (20) in eine Nut (21) des Hülsenteiles (2) eingreift.7. The device according to at least one of claims 1 to 3, characterized in that the sleeve part (3) engages with an impression (20) in a groove (21) of the sleeve part (2). 8. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Manschetten (10) am Rohr (4) mittels Profilierung durch elektromagnetische Kräfte festgelegt ist.8. The device according to at least one of claims 1 to 7, characterized in that the sleeves (10) on the tube (4) is fixed by means of profiling by electromagnetic forces. 9. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Schallabsorber am Abgasrohr (4) und/oder an den Hülsenteilen (2,3) mittels Profilierung durch elektromagnetische Kräfte angebracht sind.9. The device according to at least one of claims 1 to 8, characterized in that the sound absorbers on the exhaust pipe (4) and / or on the sleeve parts (2,3) are attached by means of profiling by electromagnetic forces.
EP80810177A 1979-06-06 1980-05-27 Exhaust gas outlet device for internal combustion engines and method for its manufacture Expired EP0022063B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80810177T ATE6290T1 (en) 1979-06-06 1980-05-27 DEVICE FOR DIVING EXHAUST GASES FROM INTERNAL COMBUSTION ENGINES AND METHOD FOR MANUFACTURING THE SAME.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5250/79 1979-06-06
CH5250/79A CH647302A5 (en) 1979-06-06 1979-06-06 DEVICE FOR DISCHARGING EXHAUST GAS FROM COMBUSTION ENGINES.

Publications (2)

Publication Number Publication Date
EP0022063A1 true EP0022063A1 (en) 1981-01-07
EP0022063B1 EP0022063B1 (en) 1984-02-15

Family

ID=4290436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80810177A Expired EP0022063B1 (en) 1979-06-06 1980-05-27 Exhaust gas outlet device for internal combustion engines and method for its manufacture

Country Status (12)

Country Link
US (3) US4352408A (en)
EP (1) EP0022063B1 (en)
JP (1) JPS55164718A (en)
AT (1) ATE6290T1 (en)
AU (1) AU5899080A (en)
CA (1) CA1179274A (en)
CH (1) CH647302A5 (en)
DE (2) DE2928989A1 (en)
ES (1) ES257685Y (en)
NO (1) NO801669L (en)
YU (1) YU152180A (en)
ZA (1) ZA803353B (en)

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EP0056604A2 (en) * 1981-01-16 1982-07-28 Alcan Aluminiumwerke GmbH Exhaust silencer for internal combustion engines and method of making same
EP0159468A2 (en) * 1984-04-25 1985-10-30 INTERATOM Gesellschaft mit beschränkter Haftung Exhaust gas catalyst support made of heat-resistant steel sheets containing aluminium and process for its production
EP0391014A2 (en) * 1989-04-07 1990-10-10 Acerbis Italia S.P.A. Absorption silencer for internal combustion engines, especially for all-terrain vehicles
FR2706977A1 (en) * 1993-06-21 1994-12-30 Manuli Automobile France Sa
EP2757235A1 (en) * 2013-01-16 2014-07-23 Henn GmbH & Co.KG Sound muffler and method for producing the same
EP2781707A1 (en) * 2013-03-21 2014-09-24 Honda Motor Co., Ltd. Engine muffler

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CH647302A5 (en) * 1979-06-06 1985-01-15 Alusuisse DEVICE FOR DISCHARGING EXHAUST GAS FROM COMBUSTION ENGINES.
US5205719A (en) * 1992-01-13 1993-04-27 Copeland Corporation Refrigerant compressor discharge muffler
US5530213A (en) * 1993-05-17 1996-06-25 Ford Motor Company Sound-deadened motor vehicle exhaust manifold
EP0995018B1 (en) * 1997-07-07 2002-04-10 Nelson Industries, Inc. Modular silencer
DE19751940C1 (en) * 1997-11-24 1999-03-25 Mann & Hummel Filter Intake silencer for motor vehicle internal combustion engine
WO1999040297A2 (en) * 1998-02-09 1999-08-12 Klil Industries Ltd. Aluminum muffler and method of manufacture
US6558137B2 (en) * 2000-12-01 2003-05-06 Tecumseh Products Company Reciprocating piston compressor having improved noise attenuation
US6983820B2 (en) * 2001-09-07 2006-01-10 Avon Polymer Products Limited Noise and vibration suppressors
US20050067217A1 (en) * 2001-11-20 2005-03-31 Hansen Helge Reimer Exhaust system and a method of producing the same
FR2839533B1 (en) * 2002-05-07 2004-11-19 Faurecia Sys Echappement CLEANABLE DEVICE FOR CLEANING EXHAUST GASES FROM AN ENGINE
US8820325B2 (en) * 2002-10-11 2014-09-02 The Regents Of The University Of California Bymixer apparatus and method for fast-response, adjustable measurement of mixed gas fractions in ventilation circuits
US6832872B2 (en) 2002-11-13 2004-12-21 Blaw-Knox Construction Equipment Corporation Gas discharge device for a construction vehicle
US7160519B1 (en) 2003-07-28 2007-01-09 Fleetguard, Inc. Serviceable exhaust aftertreatment device, and configured cylindrical bodies for coupling
DE102004037480A1 (en) * 2004-08-03 2006-03-02 Zeuna-Stärker GmbH & Co KG A vehicle exhaust gas purification device and method of manufacturing the same
FR2879240B1 (en) * 2004-12-10 2010-12-17 Faurecia Sys Echappement DEVICE FOR DEPOLLUTING THE EXHAUST GAS OF A THERMAL ENGINE
US20070116617A1 (en) * 2005-11-21 2007-05-24 Lawrukovich Michael P Exhaust treatment device comprising lock-seam and methods of assembling the same
FR2946120B1 (en) * 2009-05-29 2015-11-06 Hutchinson ACOUSTICAL ATTENUATION DEVICE FOR THE INTAKE LINE OF A THERMAL MOTOR, AND ADMISSION LINE INCORPORATING IT.
AT513955A1 (en) * 2013-01-16 2014-08-15 Henn Gmbh & Co Kg Silencer and process for its production

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EP0056604A2 (en) * 1981-01-16 1982-07-28 Alcan Aluminiumwerke GmbH Exhaust silencer for internal combustion engines and method of making same
EP0056604A3 (en) * 1981-01-16 1982-08-11 Alcan Aluminiumwerke GmbH Exhaust silencer for internal combustion engines and method of making same
EP0159468A2 (en) * 1984-04-25 1985-10-30 INTERATOM Gesellschaft mit beschränkter Haftung Exhaust gas catalyst support made of heat-resistant steel sheets containing aluminium and process for its production
EP0159468B1 (en) * 1984-04-25 1989-04-05 INTERATOM Gesellschaft mit beschränkter Haftung Exhaust gas catalyst support made of heat-resistant steel sheets containing aluminium and process for its production
EP0391014A2 (en) * 1989-04-07 1990-10-10 Acerbis Italia S.P.A. Absorption silencer for internal combustion engines, especially for all-terrain vehicles
EP0391014A3 (en) * 1989-04-07 1990-12-05 Acerbis Plastica Italia S.P.A. Absorption silencer for internal combustion engines, especially for all-terrain vehicles
FR2706977A1 (en) * 1993-06-21 1994-12-30 Manuli Automobile France Sa
WO1995000796A1 (en) * 1993-06-21 1995-01-05 Manuli Automobile France Enclosure for the passage of a pressurized fluid and process for making same
EP2757235A1 (en) * 2013-01-16 2014-07-23 Henn GmbH & Co.KG Sound muffler and method for producing the same
EP2781707A1 (en) * 2013-03-21 2014-09-24 Honda Motor Co., Ltd. Engine muffler

Also Published As

Publication number Publication date
DE3066563D1 (en) 1984-03-22
AU5899080A (en) 1980-12-11
US4446942A (en) 1984-05-08
CA1179274A (en) 1984-12-11
EP0022063B1 (en) 1984-02-15
US4745988A (en) 1988-05-24
ATE6290T1 (en) 1984-03-15
YU152180A (en) 1983-01-21
NO801669L (en) 1980-12-08
ES257685U (en) 1981-11-01
JPS55164718A (en) 1980-12-22
US4352408A (en) 1982-10-05
DE2928989A1 (en) 1980-12-11
ES257685Y (en) 1982-05-01
CH647302A5 (en) 1985-01-15
ZA803353B (en) 1981-06-24

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