EP1114919B1 - Muffler device for exhaust systems of automotive vehicles - Google Patents

Muffler device for exhaust systems of automotive vehicles Download PDF

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Publication number
EP1114919B1
EP1114919B1 EP00127423A EP00127423A EP1114919B1 EP 1114919 B1 EP1114919 B1 EP 1114919B1 EP 00127423 A EP00127423 A EP 00127423A EP 00127423 A EP00127423 A EP 00127423A EP 1114919 B1 EP1114919 B1 EP 1114919B1
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EP
European Patent Office
Prior art keywords
housing
silencer according
silencer
connection piece
polyphthalamide
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EP00127423A
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German (de)
French (fr)
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EP1114919A1 (en
Inventor
Karl Heinrich Amft
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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
    • F01N13/16—Selection of particular materials

Definitions

  • the invention relates to a silencer for exhaust systems of motor vehicles, especially passenger and Trucks and buses, with a housing that one and can be connected on the outlet side to pipes of the exhaust system is, and functional elements that are inside the housing are included.
  • the invention has for its object a silencer for exhaust systems of motor vehicles to create the one hand is reduced in weight and on the other hand better than known from the prior art Silencers can be recycled, being beyond its corrosion resistance and impact resistance and its other thermal and mechanical properties all requirements in the operation of the motor vehicle have to suffice.
  • the Housing of the silencer made of a glass fiber reinforced and heat-stabilized polyphthalamide (PPA) is formed.
  • PPA polyphthalamide
  • Such a design of the silencer can Housing of the silencer can be easily recycled, the same procedures can be used as they do for bumpers made of appropriate materials are common.
  • polyphthalamide for the housing of a Silencer has proven to be a polyphthalamide (PPA) which contains 45% by mass of reinforcing glass fibers.
  • the material can be used as polyphthalamide (PPA) "AMODEL AS-1145 HS” from Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA.
  • PPA polyphthalamide
  • AMODEL AS-1145 HS Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA.
  • this additional thermal insulation layer preferably can be formed from rock wool.
  • the housing made of the said polyphthalamide can expediently into a central section and two end sections structure, depending on the requirement profile, which any given by the exhaust system Design of the end sections is possible and one Basic shape of a middle section can be used.
  • the end sections of the housing can each muffler a receptacle for an input or output side Train the exhaust system pipe.
  • At least one of these receiving ports is arranged eccentrically.
  • both receptacles can also be arranged eccentrically.
  • Embodiments of the silencer according to the invention realized be in which at least one end portion of the housing forms a double intake port in which two one or exhaust pipes on the outlet side can be accommodated are.
  • both end sections can also train such a double intake port.
  • cross section of the housing of the invention Different designs are possible, such a cross section round, approximately oval or can be configured appropriately in another way.
  • This heat and squeeze ring can preferably be made of Teflon be trained.
  • the functional elements accommodated within the housing The silencer can be used in a state of the art be known manner, all of known in the art suitable for silencers Functional elements can be used.
  • a first embodiment shown in Figure 1 of an inventive Silencer 1 is used for installation in exhaust systems of motor vehicles, it being the motor vehicles both for cars and trucks and also for buses or the like. Special vehicles can act.
  • the silencer 1 shown in Figure 1 has a housing 2, in which the usual functional elements for silencers are included.
  • the housing 2 is divided into that shown in Figure 1 Embodiment of the silencer 1 in a central section 3 and two adjoining the central section 3 on both sides End sections 4, 5.
  • the left end portion 4 in FIG. 1 forms a receptacle 6 in which the silencer 1 facing end of a pipeline 7 not otherwise Exhaust system shown is added.
  • the right or output end portion 5 of the Silencer 1 forms a receptacle 8 in which the end facing the muffler 1 on the output side of the silencer 1 arranged pipeline 9 the exhaust system, not shown in the rest is.
  • the housing 2 of the silencer 1 is made of a glass fiber reinforced and heat or heat stabilized polyphthalamide (PPA) trained. This contains polyphthalamide (PPA) too 45% by mass of reinforcing glass fibers.
  • the material can preferably be such a polyphthalamide (PPA) "AMODEL AS-1145HS” from Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA.
  • PPA polyphthalamide
  • AMODEL AS-1145HS polyphthalamide
  • This material is a glass fiber reinforced heat-stabilized engineering plastic, the one high heat resistance, a high flexural modulus and a has great tensile strength and is also characterized by excellent Creep resistance and low moisture absorption distinguished.
  • Its tensile strength is 259 MPa, its elongation at break 2.6%, its flexural strength 362 MPa, its flexural modulus 13600 MPa, its shear strength 108 MPa, its compressive strength 314 MPa, its Poisson number 0.41, its Izod impact strength at 3.2 mm 133 J / m, its Izod impact strength 12.9 kJ / m 2 , its Izod impact strength 72.5 kJ / m 2 , its Charpy impact strength 14.8 kJ / m 2 , its Charpy impact strength 81.2 kJ / m 2 and its Rockwell hardness 125 R.
  • the housing can be used to further limit the temperature load 2 have an additional thermal insulation layer, the can preferably be formed from rock wool.
  • Silencers are the intake port on the inlet side 6 and the outlet-side receptacle 8 of the respective End sections 4, 5 arranged eccentrically.
  • FIG. 2 differs from this of the silencer 1 according to the invention, in which both the input-side intake port 6 and the output-side receptacle 8 centrally with respect to the End sections 4, 5 are arranged.
  • Silencer 1 forms the input side End section 4 of the muffler 1 an external intake port 6, whereas the output end section 5 of the silencer 1 has a concentric receptacle 8 formed.
  • Silencer 1 forms both the input side End section 4 and the end section on the output side 5 from a double intake port 10 or 11, in which two ends of one with respect to the silencer 1 on the input side Pipe system 12 or output-side pipe system 13 are included.
  • the embodiment shown in Figure 5 of the silencer 1 according to the invention has an input side End section 4 with a central receptacle 6, whereas the output-side end section 5 has a double receptacle 11 trains, in which two ends one with respect on the silencer 1 on the outlet pipe system 13 are supported.
  • Figures 7 and 9 is one with several rounded and straight cross-section of the silencer 1 provided, the embodiment according to FIG has single receiving nozzle 6, whereas the embodiment 9 has a double intake port 10.
  • Figure 10 of the muffler according to the invention has a circular Cross-section, with a centrally arranged receptacle 6 is provided.

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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)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

The silencer comprising a housing with inlet and outlet connections is characterized by the fact that the housing is made of glass fiber reinforced, thermally stable polyphthalamide (PPA).

Description

Die Erfindung bezieht sich auf einen Schalldämpfer für Auspuffanlagen von Kraftfahrzeugen, insbesondere Personen- und Lastkraftwagen und Bussen, mit einem Gehäuse, das ein- und ausgangsseitig an Rohrleitungen der Auspuffanlage anschließbar ist, und Funktionselementen, die innerhalb des Gehäuses aufgenommen sind.The invention relates to a silencer for exhaust systems of motor vehicles, especially passenger and Trucks and buses, with a housing that one and can be connected on the outlet side to pipes of the exhaust system is, and functional elements that are inside the housing are included.

Derartige Schalldämpfer kommen praktisch in sämtlichen genannten Auspuffanlagen zum Einsatz. Hierbei handelt es sich um Bauteile, die einerseits mit einem möglichst geringen Gewicht ausgelegt werden müssen, um das Gesamtgewicht des Kraftfahrzeugs niedrig zu halten und die darüber hinaus nach der Nutzungsdauer eines Kraftfahrzeugs in den gesetzlichen Bestimmungen entsprechenderweise recycelt bzw. wiederverwertet werden sollen.Such silencers come in practically all of the above Exhaust systems for use. This is it components that are as light as possible must be designed to accommodate the total weight of the Keep motor vehicle low and beyond the service life of a motor vehicle in the legal Correspondingly, provisions are recycled or reused should be.

Der Erfindung liegt die Aufgabe zugrunde, einen Schalldämpfer für Auspuffanlagen von Kraftfahrzeugen zu schaffen, der einerseits hinsichtlich seines Gewichts reduziert ist und andererseits besser als aus dem Stand der Technik bekannte Schalldämpfer wiederverwertet werden kann, wobei darüber hinaus seine Korrosionsfestigkeit und Schlagfestigkeit und seine weiteren wärmetechnischen und mechanischen Eigenschaften allen im Betrieb des Kraftfahrzeugs gestellten Anforderungen genügen müssen.The invention has for its object a silencer for exhaust systems of motor vehicles to create the one hand is reduced in weight and on the other hand better than known from the prior art Silencers can be recycled, being beyond its corrosion resistance and impact resistance and its other thermal and mechanical properties all requirements in the operation of the motor vehicle have to suffice.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Gehäuse des Schalldämpfers aus einem glasfaserverstärkten und hitzestabilisierten Polyphthalamid (PPA) ausgebildet ist. Bei einer derartigen Ausgestaltung des Schalldämpfers kann das Gehäuse des Schalldämpfers in einfacher Weise recycelt werden, wobei die gleichen Verfahren zum Einsatz kommen können, wie sie für aus entsprechenden Werkstoffen gefertigte Stoßstangen gängig sind. Ein derartiges Polyphthalamid (PPA) ist im Vergleich zu den herkömmlicherweise für Gehäuse von Schalldämpfern eingesetzten Werkstoffen leicht, wobei darüber hinaus eine jedweden Anforderungen genügende Korrosionsfestigkeit und Schlagfestigkeit gewährleistet ist.This object is achieved in that the Housing of the silencer made of a glass fiber reinforced and heat-stabilized polyphthalamide (PPA) is formed. at Such a design of the silencer can Housing of the silencer can be easily recycled, the same procedures can be used as they do for bumpers made of appropriate materials are common. Such is a polyphthalamide (PPA) compared to the conventionally for housing from Mufflers used materials easily, being about corrosion resistance that meets all requirements and impact resistance is guaranteed.

Als besonders geeignetes Polyphthalamid für das Gehäuse eines Schalldämpfers hat sich ein Polyphthalamid (PPA) erwiesen, welches zu 45 Massen-% verstärkende Glasfasern enthält.As a particularly suitable polyphthalamide for the housing of a Silencer has proven to be a polyphthalamide (PPA) which contains 45% by mass of reinforcing glass fibers.

Insbesondere kann als Polyphthalamid (PPA) der Werkstoff "AMODEL AS-1145 HS" der Firma Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA, zum Einsatz kommen.In particular, the material can be used as polyphthalamide (PPA) "AMODEL AS-1145 HS" from Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA.

Zur weiteren Begrenzung der das Gehäuse des Schalldämpfers belastenden Temperatur ist es zweckmäßig, wenn das Gehäuse gemäß einer vorteilhaften Ausführungsform des erfindungsgemäßen Schalldämpfers eine zusätzliche Wärmedämmungsschicht aufweist, wobei diese zusätzliche Wärmedämmungsschicht bevorzugterweise aus Steinwolle ausgebildet sein kann. To further limit the housing of the muffler stressful temperature, it is useful if the housing according to an advantageous embodiment of the invention Muffler has an additional insulation layer, this additional thermal insulation layer preferably can be formed from rock wool.

Das aus dem genannten Polyphthalamid gefertigte Gehäuse kann sich zweckmäßigerweise in einen Mittelabschnitt und zwei Endabschnitte gliedern, wobei je nach Anforderungsprofil, welches durch die Auspuffanlage vorgegeben wird, eine beliebige Gestaltung der Endabschnitte möglich ist und eine einzige Grundform eines Mittelabschnitts eingesetzt werden kann.The housing made of the said polyphthalamide can expediently into a central section and two end sections structure, depending on the requirement profile, which any given by the exhaust system Design of the end sections is possible and one Basic shape of a middle section can be used.

Gemäß einer weiteren Ausführungsform des erfindungsgemäßen Schalldämpfers können die Endabschnitte des Gehäuses jeweils einen Aufnahmestutzen für eine ein- bzw. ausgangsseitige Rohrleitung der Auspuffanlage ausbilden.According to a further embodiment of the invention The end sections of the housing can each muffler a receptacle for an input or output side Train the exhaust system pipe.

Hierbei ist es möglich, daß zumindest einer dieser Aufnahmestutzen exzentrisch angeordnet ist. Alternativ können jedoch auch beide Aufnahmestutzen exzentrisch angeordnet sein.It is possible that at least one of these receiving ports is arranged eccentrically. Alternatively, however both receptacles can also be arranged eccentrically.

Des weiteren können bei besonders gestalteten Auspuffanlagen Ausführungsformen des erfindungsgemäßen Schalldämpfers realisiert werden, bei denen zumindest ein Endabschnitt des Gehäuses einen Doppelaufnahmestutzen ausbildet, in dem zwei einoder ausgangsseitige Rohrleitungen der Auspuffanlage aufnehmbar sind. Selbstverständlich können auch beide Endabschnitte einen derartigen Doppelaufnahmestutzen ausbilden.Furthermore, with specially designed exhaust systems Embodiments of the silencer according to the invention realized be in which at least one end portion of the housing forms a double intake port in which two one or exhaust pipes on the outlet side can be accommodated are. Of course, both end sections can also train such a double intake port.

Auch als Querschnitt des Gehäuses des erfindungsgemäßen Schalldämpfers sind unterschiedliche Ausführungsformen mbglich, wobei ein derartiger Querschnitt rund, etwa oval oder in anderer Weise geeignet ausgestaltet sein kann.Also as a cross section of the housing of the invention Different designs are possible, such a cross section round, approximately oval or can be configured appropriately in another way.

Zur Schaffung einer absolut dichten und widerstandsfähigen Verbindung zwischen den Enden der Rohrleitungen und den Aufnahmestutzen des Schalldämpfers ist es zweckmäßig, wenn jedes in einem Aufnahmestutzen aufgenommene Ende einer Rohrleitung von einem zwischen sich und dem Aufnahmestutzen eingepaßten Hitze- und Quetschring umgeben ist.To create an absolutely dense and resistant Connection between the ends of the pipes and the socket of the silencer, it is useful if each end of a pipeline received in a receptacle from one that fits between itself and the receptacle Heat and crush ring is surrounded.

Dieser Hitze- und Quetschring kann vorzugsweise aus Teflon ausgebildet sein.This heat and squeeze ring can preferably be made of Teflon be trained.

Alternativ ist es auch möglich, den Hitze- und Quetschring aus einem verdichteten und gepreßten Drahtgestrick auszugestalten.Alternatively, it is also possible to use the heat and squeeze ring from a compressed and pressed wire mesh.

Die innerhalb des Gehäuses aufgenommenen Funktionselemente des Schalldämpfers können in einer aus dem Stand der Technik bekannten Art und Weise ausgebildet sein, wobei sämtliche aus dem Stand der Technik bekannte für Schalldämpfer geeignete Funktionselemente zum Einsatz kommen können.The functional elements accommodated within the housing The silencer can be used in a state of the art be known manner, all of known in the art suitable for silencers Functional elements can be used.

Im folgenden wird die Erfindung an Hand von Ausführungsformen unter Bezugnahme auf die Zeichnung näher erläutert.In the following, the invention is illustrated by means of embodiments explained in more detail with reference to the drawing.

Es zeigen:

Figur 1
eine Prinzipdarstellung eines erfindungsgemäßen Schalldämpfers für Auspuffanlagen von Kraftfahrzeugen in einer ersten Ausführungsform;
Figur 2
eine zweite Ausführungsform des erfindungsgemäßen Schalldämpfers;
Figur 3
eine dritte Ausführungsform des erfindungsgemäßen Schalldämpfers;
Figur 4
eine vierte Ausführungsform des erfindungsgemäßen Schalldämpfers;
Figur 5
eine fünfte Ausführungsform des erfindungsgemäßen Schalldämpfers; und
Figuren 6 bis 10
Vorder- bzw. Hinteransichten unterschiedlicher Ausführungsformen des erfindungsgemäßen Schalldämpfers.
Show it:
Figure 1
a schematic diagram of a silencer according to the invention for exhaust systems of motor vehicles in a first embodiment;
Figure 2
a second embodiment of the muffler according to the invention;
Figure 3
a third embodiment of the muffler according to the invention;
Figure 4
a fourth embodiment of the muffler according to the invention;
Figure 5
a fifth embodiment of the muffler according to the invention; and
Figures 6 to 10
Front and rear views of different embodiments of the muffler according to the invention.

Eine in Figur 1 dargestellte erste Ausführungsform eines erfindungsgemäßen Schalldämpfers 1 dient zum Einbau in Auspuffanlagen von Kraftfahrzeugen, wobei es sich bei den Kraftfahrzeugen sowohl um Personen- als auch um Lastkraftwagen und auch um Busse od.dgl. Sonderfahrzeuge handeln kann.A first embodiment shown in Figure 1 of an inventive Silencer 1 is used for installation in exhaust systems of motor vehicles, it being the motor vehicles both for cars and trucks and also for buses or the like. Special vehicles can act.

Von der Auspuffanlage, in die der erfindungsgemäße Schalldämpfer 1 eingebaut wird, sind in den Figuren lediglich die dem Schalldämpfer 1 zugeordneten Enden von in bezug auf den Schalldämpfer 1 eingangs- und ausgangsseitigen Rohrleitungen dargestellt.From the exhaust system into which the silencer according to the invention 1 is installed, are only in the figures the muffler 1 associated ends with respect to the Muffler 1 pipes on the inlet and outlet side shown.

Der in Figur 1 dargestellte Schalldämpfer 1 hat ein Gehäuse 2, in dem die für Schalldämpfer üblichen Funktionselemente aufgenommen sind.The silencer 1 shown in Figure 1 has a housing 2, in which the usual functional elements for silencers are included.

Das Gehäuse 2 gliedert sich bei der in Figur 1 dargestellten Ausführungsform des Schalldämpfers 1 in einen Mittelabschnitt 3 und zwei sich beidseitig an den Mittelabschnitt 3 anschließende Endabschnitte 4, 5.The housing 2 is divided into that shown in Figure 1 Embodiment of the silencer 1 in a central section 3 and two adjoining the central section 3 on both sides End sections 4, 5.

Der in Figur 1 linke bzw. eingangsseitige Endabschnitt 4 bildet einen Aufnahmestutzen 6 aus, in dem das dem Schalldämpfer 1 zugewandte Ende einer Rohrleitung 7 der im übrigen nicht dargestellten Auspuffanlage aufgenommen ist. The left end portion 4 in FIG. 1 forms a receptacle 6 in which the silencer 1 facing end of a pipeline 7 not otherwise Exhaust system shown is added.

Der in Figur 1 rechte bzw. ausgangsseitige Endabschnitt 5 des Schalldämpfers 1 bildet einen Aufnahmestutzen 8 aus, in dem das dem Schalldämpfer 1 zugewandte Ende einer an der Ausgangsseite des Schalldämpfers 1 angeordneten Rohrleitung 9 der im übrigen nicht dargestellten Auspuffanlage aufgenommen ist.The right or output end portion 5 of the Silencer 1 forms a receptacle 8 in which the end facing the muffler 1 on the output side of the silencer 1 arranged pipeline 9 the exhaust system, not shown in the rest is.

Das Gehäuse 2 des Schalldämpfers 1 ist aus einem glasfaserverstärkten und hitze- bzw. wärmestabilisierten Polyphthalamid (PPA) ausgebildet. Diese Polyphthalamid (PPA) enthält zu 45 Massen-% verstärkende Glasfasern.The housing 2 of the silencer 1 is made of a glass fiber reinforced and heat or heat stabilized polyphthalamide (PPA) trained. This contains polyphthalamide (PPA) too 45% by mass of reinforcing glass fibers.

Als derartiges Polyphthalamid (PPA) kann bevorzugt der Werkstoff "AMODEL AS-1145HS" der Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA, zum Einsatz kommen.The material can preferably be such a polyphthalamide (PPA) "AMODEL AS-1145HS" from Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA.

Bei diesem Werkstoff handelt es sich um einen glasfaserverstärkten wärmestabilisierten technischen Kunststoff, der eine hohe Wärmeformbeständigkeit, einen hohen Biegemodul und eine große Zugfestigkeit aufweist und sich außerdem durch hervorragende Kriechfestigkeit und geringe Feuchtigkeitsaufnahme auszeichnet. Dabei ist die Verarbeitung des genannten Werkstoffs mit herkömmlichen Methoden und Maschinen vergleichsweise wenig aufwendig.This material is a glass fiber reinforced heat-stabilized engineering plastic, the one high heat resistance, a high flexural modulus and a has great tensile strength and is also characterized by excellent Creep resistance and low moisture absorption distinguished. Here is the processing of the material mentioned comparatively with conventional methods and machines not very expensive.

Im trockenen Zustand beträgt seine Dichte 1,56 g/cm3, seine Schmelztemperatur 310 Grad C, seine Wasseraufnahme in 24 Stunden 0,12 %, seine Formschwindung in Längs- bzw. Querrichtung 0,2 bzw. 0,6 %.In the dry state, its density is 1.56 g / cm 3 , its melting temperature is 310 degrees C, its water absorption in 24 hours is 0.12%, its shrinkage in the longitudinal and transverse directions is 0.2 and 0.6%.

Seine Zugfestigkeit beträgt 259 MPa, seine Bruchdehnung 2,6 %, seine Biegefestigkeit 362 MPa, sein Biegemodul 13600 MPa, seine Scherfestigkeit 108 MPa, seine Druckfestigkeit 314 MPa, seine Poisson'sche Zahl 0,41, seine Izod-Kerbschlagzähigkeit bei 3,2 mm 133 J/m, seine Izod-Kerbschlagzähigkeit 12,9 kJ/m2, seine Izod-Schlagzähigkeit 72,5 kJ/m2, seine Charpy-Kerbschlagzähigkeit 14,8 kJ/m2, seine Charpy-Schlagzähigkeit 81,2 kJ/m2 und seine Rockwell-Härte 125 R.Its tensile strength is 259 MPa, its elongation at break 2.6%, its flexural strength 362 MPa, its flexural modulus 13600 MPa, its shear strength 108 MPa, its compressive strength 314 MPa, its Poisson number 0.41, its Izod impact strength at 3.2 mm 133 J / m, its Izod impact strength 12.9 kJ / m 2 , its Izod impact strength 72.5 kJ / m 2 , its Charpy impact strength 14.8 kJ / m 2 , its Charpy impact strength 81.2 kJ / m 2 and its Rockwell hardness 125 R.

Seine Wärmeformbeständigkeit beträgt bei 1,82 MPa 287 Grad C, bei 0,45 MPa 301 Grad C. Seine Dauergebrauchstemperatur beträgt bei 5000 Stunden 185 Grad C, bei 20000 Stunden 165 Grad C.Its heat resistance at 1.82 MPa is 287 degrees C, at 0.45 MPa 301 degrees C. Its continuous use temperature is at 5000 hours 185 degrees C, at 20,000 hours 165 degrees C.

Bei einer Wandstärke von 3,17 mm ist sein Brandverhalten in HB einzuordnen. Sein linearer Wärmeausdehnungskoeffizient beträgt bei einem Temperaturbereich von 0 bis 100 Grad C in Längsrichtung 1,5 x 10-51/Grad C, in Querrichtung 5,0 x 10-51/Grad C, in einem Temperaturbereich von 100 bis 250 Grad C in Längsrichtung 1,0 x 10-51/Grad C und in Querrichtung 10,0 x 10-51/Grad C.With a wall thickness of 3.17 mm, its fire behavior can be classified in HB. Its linear coefficient of thermal expansion is 1.5 x 10 -51 / degree C at a temperature range of 0 to 100 degrees C in the longitudinal direction, 5.0 x 10 -51 / degrees C in the transverse direction, in a temperature range of 100 to 250 degrees C in the longitudinal direction 1.0 x 10 -51 / degree C and in the transverse direction 10.0 x 10 -51 / degree C.

Zur weiteren Begrenzung der Temperaturbelastung kann das Gehäuse 2 eine zusätzliche Wärmedämmungsschicht aufweisen, die bevorzugterweise aus Steinwolle ausgebildet sein kann.The housing can be used to further limit the temperature load 2 have an additional thermal insulation layer, the can preferably be formed from rock wool.

Bei der in Figur 1 dargestellten Ausführungsform des erfindungsgemäßen Schalldämpfers sind der eingangsseitige Aufnahmestutzen 6 und der ausgangsseitige Aufnahmestutzen 8 der jeweiligen Endabschnitte 4, 5 exzentrisch angeordnet.In the embodiment of the invention shown in Figure 1 Silencers are the intake port on the inlet side 6 and the outlet-side receptacle 8 of the respective End sections 4, 5 arranged eccentrically.

Hiervon unterscheidet sich die in Figur 2 dargestellte Ausführungsform des erfindungsgemäßen Schalldämpfers 1, bei dem sowohl der eingangsseitige Aufnahmestutzen 6 als auch der ausgangsseitige Aufnahmestutzen 8 zentrisch in bezug auf die Endabschnitte 4, 5 angeordnet sind.The embodiment shown in FIG. 2 differs from this of the silencer 1 according to the invention, in which both the input-side intake port 6 and the output-side receptacle 8 centrally with respect to the End sections 4, 5 are arranged.

Bei dem in Figur 3 dargestellten Ausführungsbeispiel des erfindungsgemäßen Schalldämpfers 1 bildet der eingangsseitige Endabschnitt 4 des Schalldämpfers 1 einen externen Aufnahmestutzen 6 aus, wohingegen der ausgangsseitige Endabschnitt 5 des Schalldämpfers 1 einen konzentrischen Aufnahmestutzen 8 ausbildet.In the embodiment of the invention shown in Figure 3 Silencer 1 forms the input side End section 4 of the muffler 1 an external intake port 6, whereas the output end section 5 of the silencer 1 has a concentric receptacle 8 formed.

Im Falle der in Figur 4 dargestellten Ausführungsform des erfindungsgemaßen Schalldämpfers 1 bildet sowohl der eingangsseitige Endabschnitt 4 als auch der ausgangsseitige Endabschnitt 5 einen Doppelaufnahmestutzen 10 bzw. 11 aus, in dem zwei Enden eines in bezug auf den Schalldämpfer 1 eingangsseitigen Rohrleitungssystems 12 bzw. ausgangsseitigen Rohrleitungssystems 13 aufgenommen sind.In the case of the embodiment of the invention shown in FIG Silencer 1 forms both the input side End section 4 and the end section on the output side 5 from a double intake port 10 or 11, in which two ends of one with respect to the silencer 1 on the input side Pipe system 12 or output-side pipe system 13 are included.

Schließlich hat die in Figur 5 dargestellte Ausführungsform des erfindungsgemäßen Schalldämpfers 1 einen eingangsseitigen Endabschnitt 4 mit einem zentrischen Aufnahmestutzen 6, wohingegen der ausgangsseitige Endabschnitt 5 einen Doppelaufnahmestutzen 11 ausbildet, in dem zwei Enden eines in bezug auf den Schalldämpfer 1 ausgangsseitigen Rohrleitungssystems 13 gehaltert sind.Finally, the embodiment shown in Figure 5 of the silencer 1 according to the invention has an input side End section 4 with a central receptacle 6, whereas the output-side end section 5 has a double receptacle 11 trains, in which two ends one with respect on the silencer 1 on the outlet pipe system 13 are supported.

In den Figuren 6 und 8 sind die Vorder- bzw. Rückseite erfindungsgemaßer Schalldämpfer 1 dargestellt, die einen in etwa ovalen Querschnitt aufweisen, wobei im Falle des in Figur 6 dargestellten Schalldämpfers 1 ein mittig angeordneter Aufnahmestutzen 6 und im Falle des in Figur 8 dargestellten Schalldämpfers 1 ein Doppelaufnahmestutzen 10 vorgesehen sind.In Figures 6 and 8, the front and back are inventive Silencer 1 shown, the one in about have an oval cross section, wherein in the case of FIG shown muffler 1 is a centrally located receptacle 6 and in the case of that shown in Figure 8 Muffler 1 provided a double intake port 10 are.

In den Figuren 7 und 9 ist ein mit mehreren abgerundeten und geraden Seiten ausgebildeter Querschnitt des Schalldämpfers 1 vorgesehen, wobei die Ausführungsform gemäß Figur 7 einen einzigen Aufnahmestutzen 6 aufweist, wohingegen die Ausführungsform gemäß Figur 9 einen Doppelaufnahmestutzen 10 hat.In Figures 7 and 9 is one with several rounded and straight cross-section of the silencer 1 provided, the embodiment according to FIG has single receiving nozzle 6, whereas the embodiment 9 has a double intake port 10.

Bei der in Figur 10 im Prinzip dargestellten Ausführungsform des erfindungsgemäßen Schalldämpfers hat dieser einen kreisförmigen Querschnitt, wobei ein zentrisch angeordneter Aufnahmestutzen 6 vorgesehen ist.In the embodiment shown in principle in Figure 10 of the muffler according to the invention has a circular Cross-section, with a centrally arranged receptacle 6 is provided.

Claims (13)

  1. Silencer for exhaust systems of motor vehicles, in particular cars and commercial vehicles and buses, having a housing (2) which can be connected at the inlet and outlet side to pipes (7, 9, 12, 13) of the exhaust system, and having function elements which are received inside the housing (2), characterised in that the housing (2) is constructed from a glass-fibre-reinforced and thermally stabilised polyphthalamide (PPA).
  2. Silencer according to claim 1, wherein the polyphthalamide (PPA) of the housing (2) contains 45% by mass of reinforcing glass fibres.
  3. Silencer according to claim 2, wherein the material "AMODEL AS-1145HS" of Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA, is provided as the polyphthalamide (PPA).
  4. Silencer according to any one of claims 1 to 3, whose housing (2) has an additional heat insulation layer.
  5. Silencer according to claim 4, wherein the additional heat insulation layer is in the form of rock wool.
  6. Silencer according to any one of claims 1 to 5, wherein the housing (2) is divided into a central portion (3) and two end portions (4, 5).
  7. Silencer according to claim 6, wherein the end portions (4, 5) of the housing (2) each form a receiving connection piece (6) and (8) for an inlet-side pipe (7) and outlet-side pipe (9), respectively.
  8. Silencer according to claim 7, wherein at least one receiving connection piece (6, 8) is arranged eccentrically.
  9. Silencer according to any one of claims 6 to 8, wherein at least one end portion (4, 5) of the housing (2) forms a double receiving connection piece (10, 11), in which two inlet-side or outlet-side pipes (12, 13) of the exhaust system can be received.
  10. Silencer according to any one of claims 1 to 9, whose housing (2) has a circular, substantially oval or other suitable cross-section.
  11. Silencer according to any one of claims 1 to 10, wherein each end of a pipe (7, 9, 12, 13), which end is received in a receiving connection piece (6, 8, 10, 11), is surrounded by a heat and compression ring which is fitted between the end and the receiving connection piece.
  12. Silencer according to claim 11, whose heat and compression rings are constructed from Teflon.
  13. Silencer according to claim 12, whose heat and compression rings are constructed from a compacted and compressed wire fabric.
EP00127423A 2000-01-06 2000-12-14 Muffler device for exhaust systems of automotive vehicles Expired - Lifetime EP1114919B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20000155U DE20000155U1 (en) 2000-01-06 2000-01-06 Exhaust silencers for motor vehicles
DE20000155U 2000-01-06

Publications (2)

Publication Number Publication Date
EP1114919A1 EP1114919A1 (en) 2001-07-11
EP1114919B1 true EP1114919B1 (en) 2003-04-02

Family

ID=7935587

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Application Number Title Priority Date Filing Date
EP00127423A Expired - Lifetime EP1114919B1 (en) 2000-01-06 2000-12-14 Muffler device for exhaust systems of automotive vehicles

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EP (1) EP1114919B1 (en)
AT (1) ATE236350T1 (en)
DE (2) DE20000155U1 (en)
DK (1) DK1114919T3 (en)
ES (1) ES2195832T3 (en)
PT (1) PT1114919E (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7934580B2 (en) 2006-04-12 2011-05-03 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system
US7942237B2 (en) 2006-04-12 2011-05-17 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated reflective chamber

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6668972B2 (en) 2000-11-07 2003-12-30 Owens Corning Fiberglas Technology, Inc. Bumper/muffler assembly
US7730996B2 (en) 2006-04-12 2010-06-08 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated crash management

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1939197A1 (en) * 1969-08-01 1971-02-11 Eugen Stier Muffler
GB2143275B (en) * 1983-07-02 1987-03-25 Production Eng Res Silencer for exhaust gases
US5052513A (en) * 1986-11-26 1991-10-01 Showa Denko Kabushiki Kaisha Noise reductive resin muffler for exhaust system in combustion engine
JPH01134021A (en) * 1987-11-17 1989-05-26 Daiwa Kogyo Kk Muffler provided with cooler
JPH0663448B2 (en) * 1988-07-15 1994-08-22 日本石油化学株式会社 Silencer
US5468923A (en) * 1994-02-07 1995-11-21 Kleyn Die Engravers, Inc. Molded muffler
JPH0868490A (en) * 1994-08-26 1996-03-12 Excel Kk Hollow molding body with muffler part

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7934580B2 (en) 2006-04-12 2011-05-03 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system
US7942237B2 (en) 2006-04-12 2011-05-17 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated reflective chamber

Also Published As

Publication number Publication date
DE20000155U1 (en) 2000-07-27
EP1114919A1 (en) 2001-07-11
ES2195832T3 (en) 2003-12-16
PT1114919E (en) 2003-08-29
DK1114919T3 (en) 2003-07-21
ATE236350T1 (en) 2003-04-15
DE50001603D1 (en) 2003-05-08

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