EP1114919A1 - 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
EP1114919A1
EP1114919A1 EP00127423A EP00127423A EP1114919A1 EP 1114919 A1 EP1114919 A1 EP 1114919A1 EP 00127423 A EP00127423 A EP 00127423A EP 00127423 A EP00127423 A EP 00127423A EP 1114919 A1 EP1114919 A1 EP 1114919A1
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EP
European Patent Office
Prior art keywords
housing
silencer
silencer according
heat
polyphthalamide
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Granted
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EP00127423A
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German (de)
French (fr)
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EP1114919B1 (en
Inventor
Karl Heinrich Amft
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Individual
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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 is 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.
  • a polyphthalamide (PPA) compared to the conventionally for housing from Muffler materials used easily, being about corrosion resistance that meets all requirements and impact resistance is guaranteed.
  • 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.
  • the housing according to an advantageous embodiment of the invention Muffler has an additional thermal insulation layer, this additional thermal insulation layer preferably can be formed from rock wool.
  • the housing made of the polyphthalamide mentioned can expediently in a middle 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.
  • Muffler can the end portions of the housing, respectively 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 in which at least one end portion of the housing forms a double intake port in which two one or Exhaust pipes of the exhaust system 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 suitably configured 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 end section 4 on the left or on the input side 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 end portion 5 in FIG 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. This includes the processing of the material mentioned comparatively with conventional methods and machines not very expensive.
  • 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 inlet connection 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 trains.
  • Silencer 1 forms both the input side End section 4 and the end section on the output side 5 from a double receptacle 10 or 11, in which two ends of one with respect to the silencer 1 on the input side Pipe system 12 or the output 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 end section 5 on the output side 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.
  • the front and back are more 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.
  • 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 silencer according to the invention has a circular shape Cross-section, with a centrally arranged receptacle 6 is provided.

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 is 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 vehicle low and beyond the service life of a motor vehicle in the legal Regulations appropriately recycled or recycled 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 Muffler materials used 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 thermal 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 polyphthalamide mentioned can expediently in a middle 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 Muffler can the end portions of the housing, respectively 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 in which at least one end portion of the housing forms a double intake port in which two one or Exhaust pipes of the exhaust system 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 möglich, 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 suitably configured 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 of one fitted between itself and the intake port 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 erfindungsgemaßen 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 of with respect to the Muffler 1 inlet and outlet pipes 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 end section 4 on the left or on the input side 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 end portion 5 in FIG 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. This includes 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 is 1.87 MPa 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 10-5 1/Grad C, in Querrichtung 5,0 x 10-5 1/Grad C, in einem Temperaturbereich von 100 bis 250 Grad C in Längsrichtung 1,0 x 10-5 1/Grad C und in Querrichtung 10,0 x 10-5 1/Grad C.With a wall thickness of 3.17 mm, its fire behavior can be classified in HB. Its linear thermal expansion coefficient is at a temperature range of 0 to 100 degrees C in the longitudinal direction 1.5 x 10 -5 1 / degrees C, in the transverse direction 5.0 x 10 -5 1 / degrees C, in a temperature range from 100 to 250 degrees C. in the longitudinal direction 1.0 x 10 -5 1 / degree C and in the transverse direction 10.0 x 10 -5 1 / 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 inlet connection 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 trains.

Im Falle der in Figur 4 dargestellten Ausführungsform des erfindungsgemäßen 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 Figure 4 Silencer 1 forms both the input side End section 4 and the end section on the output side 5 from a double receptacle 10 or 11, in which two ends of one with respect to the silencer 1 on the input side Pipe system 12 or the output 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 end section 5 on the output side 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 erfindungsgemäßer 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 more 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 silencer according to the invention has a circular shape Cross-section, with a centrally arranged receptacle 6 is provided.

Claims (13)

Schalldämpfer für Auspuffanlagen von Kraftfahrzeugen, insbesondere Personen- und Lastkraftwagen und Bussen, mit einem Gehäuse (2), das ein- und ausgangsseitig an Rohrleitungen (7, 9, 12, 13) der Auspuffanlage anschließbar ist, und Funktionselementen, die innerhalb des Gehäuses (2) aufgenommen sind, dadurch gekennzeichnet, daß das Gehäuse (2) aus einem glasfaserverstärkten und hitzestabilisierten Polyphthalamid (PPA) ausgebildet ist.Silencers for exhaust systems of motor vehicles, especially cars and trucks and buses, with a housing (2) on the inlet and outlet side of pipes (7, 9, 12, 13) of the exhaust system can be connected is, and functional elements that are inside the housing (2) are included, characterized in that the housing (2) from a glass fiber reinforced and heat stabilized Polyphthalamide (PPA) is formed. Schalldämpfer nach Anspruch 1, bei dem das Polyphthalamid (PPA) des Gehäuses (2) zu 45 Massen-% verstärkende Glasfasern enthält.The silencer of claim 1, wherein the polyphthalamide (PPA) of the housing (2) to 45 mass% reinforcing glass fibers contains. Schalldämpfer nach Anspruch 2, bei dem als Polyphthalamid (PPA) der Werkstoff "AMODEL AS-1145HS" der Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA, vorgesehen ist.Silencer according to claim 2, in which as polyphthalamide (PPA) the material "AMODEL AS-1145HS" from Amoco Polymers, Inc., Alpharetta, Georgia 30202, USA is. Schalldämpfer nach einem der Ansprüche 1 bis 3, dessen Gehäuse (2) eine zusätzliche Wärmedämmungsschicht aufweist.Silencer according to one of claims 1 to 3, the Housing (2) has an additional insulation layer. Schalldämpfer nach Anspruch 4, bei dem die zusätzliche Wärmedämmungsschicht aus Steinwolle ausgebildet ist.A silencer according to claim 4, wherein the additional Thermal insulation layer is formed from rock wool. Schalldämpfer nach einem der Ansprüche 1 bis 5, bei dem das Gehäuse (2) in einen Mittelabschnitt (3) und zwei Endabschnitte (4, 5) gegliedert ist. Silencer according to one of claims 1 to 5, in which the housing (2) into a central section (3) and two end sections (4, 5) is structured. Schalldämpfer nach Anspruch 6, bei dem die Endabschnitte (4, 5) des Gehäuses (2) jeweils einen Aufnahmestutzen (6) bzw. (8) für eine ein- bzw. ausgangsseitige Rohrleitung (7) bzw. (9) ausbilden.A silencer according to claim 6, wherein the end portions (4, 5) of the housing (2) each have a receiving connector (6) or (8) for an inlet or outlet pipe Form (7) or (9). Schalldämpfer nach Anspruch 7, bei dem zumindest ein Aufnahmestutzen (6, 8) exzentrisch angeordnet ist.Muffler according to claim 7, in which at least one receiving nozzle (6, 8) is arranged eccentrically. Schalldämpfer nach einem der Ansprüche 6 bis 8, bei dem zumindest ein Endabschnitt (4, 5) des Gehäuses (2) einen Doppelaufnahmestutzen (10, 11) ausbildet, in dem zwei ein- oder ausgangsseitige Rohrleitungen (12, 13) der Auspuffanlage aufnehmbar sind.Silencer according to one of claims 6 to 8, in which at least one end section (4, 5) of the housing (2) one Forms double intake socket (10, 11) in which two pipes on the inlet or outlet side (12, 13) of the exhaust system are recordable. Schalldämpfer nach einem der Ansprüche 1 bis 9, dessen Gehäuse (2) einen runden, etwa ovalen oder anderen geeigneten Querschnitt aufweist.Silencer according to one of claims 1 to 9, the Housing (2) a round, approximately oval or other suitable Has cross section. Schalldämpfer nach einem der Ansprüche 1 bis 10, bei dem jedes in einem Aufnahmestutzen (6, 8, 10, 11) aufgenommene Ende einer Rohrleitung (7, 9, 12, 13) von einem zwischen sich und dem Aufnahmestutzen eingepaßten Hitze- und Quetschring umgeben ist.Silencer according to one of claims 1 to 10, in which each received in a receptacle (6, 8, 10, 11) End of a pipe (7, 9, 12, 13) from one between himself and the intake neck fitted heat and Crush ring is surrounded. Schalldämpfer nach Anspruch 11, dessen Hitze- und Quetschringe aus Teflon ausgebildet sind.Silencer according to claim 11, the heat and Crimp rings are made of Teflon. Schalldämpfer nach Anspruch 12, dessen Hitze- und Quetschringe aus einem verdichteten und gepreßten Drahtgestrick ausgebildet sind.Muffler according to claim 12, the heat and Crimp rings made of a compressed and pressed wire mesh are trained.
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 2000-01-06
DE20000155U DE20000155U1 (en) 2000-01-06 2000-01-06 Exhaust silencers for motor vehicles

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

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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)

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Publication number Priority date Publication date Assignee Title
US6668972B2 (en) 2000-11-07 2003-12-30 Owens Corning Fiberglas Technology, Inc. Bumper/muffler assembly
WO2008073137A1 (en) * 2006-12-14 2008-06-19 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated reflective chamber
US7730996B2 (en) 2006-04-12 2010-06-08 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated crash management

Families Citing this family (1)

* 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

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DE1939197A1 (en) * 1969-08-01 1971-02-11 Eugen Stier Muffler
GB2143275A (en) * 1983-07-02 1985-02-06 Production Eng Res Silencer for exhaust gases
WO1989004915A2 (en) * 1987-11-17 1989-06-01 Yamato Kogyo Company, Limited Automotive exhaust system with resin muffler associated with exhaust gas cooling system
EP0394451A1 (en) * 1988-07-15 1990-10-31 Nippon Petrochemicals Company, Limited Muffler
US5052513A (en) * 1986-11-26 1991-10-01 Showa Denko Kabushiki Kaisha Noise reductive resin muffler for exhaust system in combustion engine
US5468923A (en) * 1994-02-07 1995-11-21 Kleyn Die Engravers, Inc. Molded muffler
EP0701083A1 (en) * 1994-08-26 1996-03-13 Excell Corporation Hollow plastic product having a sound attenuator

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Publication number Priority date Publication date Assignee Title
DE1939197A1 (en) * 1969-08-01 1971-02-11 Eugen Stier Muffler
GB2143275A (en) * 1983-07-02 1985-02-06 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
WO1989004915A2 (en) * 1987-11-17 1989-06-01 Yamato Kogyo Company, Limited Automotive exhaust system with resin muffler associated with exhaust gas cooling system
EP0394451A1 (en) * 1988-07-15 1990-10-31 Nippon Petrochemicals Company, Limited Muffler
US5468923A (en) * 1994-02-07 1995-11-21 Kleyn Die Engravers, Inc. Molded muffler
EP0701083A1 (en) * 1994-08-26 1996-03-13 Excell Corporation Hollow plastic product having a sound attenuator

Cited By (4)

* 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
WO2008073137A1 (en) * 2006-12-14 2008-06-19 Ocv Intellectual Capital, Llc Long fiber thermoplastic composite muffler system with integrated reflective chamber
CN101578430B (en) * 2006-12-14 2011-10-12 Ocv智识资本有限责任公司 Long fiber thermoplastic composite muffler system with integrated reflective chamber

Also Published As

Publication number Publication date
DE50001603D1 (en) 2003-05-08
PT1114919E (en) 2003-08-29
ATE236350T1 (en) 2003-04-15
EP1114919B1 (en) 2003-04-02
ES2195832T3 (en) 2003-12-16
DE20000155U1 (en) 2000-07-27
DK1114919T3 (en) 2003-07-21

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