EP3039257B1 - Schalldämpfer für eine abgasleitung einer wärmekraftmaschine - Google Patents

Schalldämpfer für eine abgasleitung einer wärmekraftmaschine Download PDF

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Publication number
EP3039257B1
EP3039257B1 EP14741344.7A EP14741344A EP3039257B1 EP 3039257 B1 EP3039257 B1 EP 3039257B1 EP 14741344 A EP14741344 A EP 14741344A EP 3039257 B1 EP3039257 B1 EP 3039257B1
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EP
European Patent Office
Prior art keywords
silencer
volume
upstream
downstream
conduit
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.)
Not-in-force
Application number
EP14741344.7A
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English (en)
French (fr)
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EP3039257A1 (de
Inventor
Laurent Gagliardini
Philippe VANNIER
Michel Caruel
Cedric DUMONT
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Technoboost SAS
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Technoboost SAS
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Publication date
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Publication of EP3039257A1 publication Critical patent/EP3039257A1/de
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Publication of EP3039257B1 publication Critical patent/EP3039257B1/de
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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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • F01N1/023—Helmholtz resonators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • 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
    • F01N13/009—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 having two or more separate purifying devices arranged in series
    • F01N13/0097—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 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • F01N13/02—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 having two or more separate silencers in series
    • 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
    • F01N2470/22—Inlet and outlet tubes being positioned on the same side of the apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes
    • F01N2490/06—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet in opposite directions

Definitions

  • the present invention relates to a silencer intended to equip an exhaust line of a heat engine.
  • the invention also relates to an exhaust line of the type comprising such a silencer, as well as the vehicle that embodies it.
  • Vehicles powered by a combustion engine also called internal combustion, have at least one exhaust line of the combustion gases.
  • the exhaust line comprises in known manner a silencer. It is fixed under the vehicle body and terminates at one of its ends by a discharge pipe, also called cannula, which sometimes slightly exceeds the rear bumper when it comes to vehicles powered solely by a heat engine .
  • the vehicle is also powered by a second power unit using an energy other than heat, such as an electric machine (hybrid electric vehicle) or a hydraulic motor (hybrid-air vehicle), or when the heat engine is connected to a compressed air tank (pneumatic hybrid vehicle), or when the heat engine also uses gaseous fuel of the natural gas type, it is necessary to house one or more additional tanks / devices in the vehicle, in particular under the box.
  • the line can then be shortened in such a way that the exhaust pipe which terminates it, at the outlet of the silencer, is under the body, at the front of the rear axle of the vehicle, for example at the second row of the vehicle.
  • the object of the invention is then the development of an improved engine exhaust system silencer.
  • These include designing a muffler more compact, or at least more adaptable dimensionally, while having acoustic performance at least as good.
  • upstream and downstream are understood by reference to the general direction of flow of the exhaust gases from the exhaust manifold of the engine to the outside of the vehicle. In the same way, “successively” is to be understood according to this direction of general flow. All the present text includes “low”, “high” and “vertical” spatial positioning indications such as the indications relating to the positioning of the muffler once mounted in the vehicle, itself positioned at a standstill. horizontal plane.
  • the silencer according to the invention therefore has the particularity of implanting the acoustic schema of the silencer with at least three separate volumes, connected by ducts that provide the guiding of the exhaust gases inside these volumes.
  • the exhaust duct can define a so-called "round-trip" path by presenting a bend in the downstream volume: in this configuration, the exhaust gases enter the exhaust duct in the upstream volume and remain guided in the duct to lead directly to the outside of the silencer at the same volume upstream.
  • the silencer has three volumes divided into one, two or three envelopes.
  • the exhaust gases will go back and forth via predefined ducts (as detailed below), the ducts then fulfilling their usual role of guiding the exhaust gases in closed volumes in order to mitigate the sound impact. But these conduits, or at least some of them, also play a mechanical role of linking the two envelopes together. This ensures coherence of the assembly without having to foresee (in any case more compulsorily) specific mechanical means to maintain correct relative positioning of the envelopes relative to each other
  • the volumes of the silencer are distributed in several envelopes delimited by lateral walls and transverse end walls called cups, said envelopes being connected to each other by at least two ducts passing through at least two cups next to two successive envelopes.
  • the evacuation duct opens up from the upstream cup of the envelope defining the upstream volume of the silencer (configuration with the so-called "round-trip" path of the evacuation duct).
  • This variant is particularly suitable when the muffler is intended to be oriented substantially along the longitudinal axis of the vehicle, and for example at least partially housed in the tunnel of the vehicle body.
  • the evacuation duct opens out from the transverse wall of the envelope defining the upstream volume of the silencer (configuration with the so-called "round trip" path of the evacuation duct).
  • This variant is particularly suitable in the case where the silencer is in transverse position, that is to say disposed perpendicular to the longitudinal axis of the vehicle, to facilitate the connection of the silencer to the rest of the exhaust line in part swallows.
  • the supply duct can thus enter the upstream volume not by its upstream cup but through its side wall.
  • the silencer is mounted in transverse configuration, it is also possible to maintain arrivals of the supply and evacuation ducts via the cups, in a more conventional way, by elbowing the ducts coming out of the ducts. volumes to allow the connection with the exhaust line which can, she, usually have an orientation along the longitudinal axis of the vehicle.
  • the silencer according to the invention may comprise several, in particular two, “go” and / or several path ducts, in particular two, “return” path ducts, and / or more, in particular two, evacuation ducts, in particular parallel ducts. them on at least a part of their lengths.
  • each of the muffler ducts in particular to give more flexibility in the sizing of the muffler as a whole.
  • the ducts thus split will advantageously have a smaller section than a unit duct, so as to keep the same pipe capacity gas flow rate given, and keep a similar pressure drop.
  • the silencer according to the invention has its intermediate volume substantially equal to or adjacent to the downstream volume.
  • the silencer according to the invention has its upstream volume is substantially twice as large as the intermediate volume and / or the downstream volume. It is thus preferably equal to the sum of the intermediate and downstream volumes.
  • the silencer according to the invention has a so-called “go" path duct of a length less than that of the so-called “return” path duct, which itself is shorter than the duct length. evacuation.
  • This choice (according to the conventions of acoustic diagrams) is optimal in terms of acoustic performance for the proposed silencer architecture.
  • the invention also relates to the body structure of a motor vehicle comprising a cockpit floor having a tunnel, such that said tunnel houses at least a portion of the silencer described above.
  • the muffler thus has a configuration where the single envelope or the successive envelopes can be aligned longitudinally along the axis of the tunnel, which is coincident with or parallel to the longitudinal axis of the vehicle.
  • the silencer can also be provided for transverse implantation in the vehicle.
  • the envelope, or at least one of the envelopes in the case where there are several may be doubled, preferably internally, a soundproofing layer of a material supporting high temperatures. It may for example be glass wool or rock wool.
  • a great advantage of the silencer according to the invention is that it can easily be arranged in the tunnel (in its longitudinal implantation).
  • the space between the two envelopes, in the configuration with several envelopes, which, in fact, makes in this area the quieter muffler in its section (its bulk was defined only by the section of the ducts which connect the two envelopes ), can be exploited to accommodate for example internal mechanical reinforcements of the tunnel, for example.
  • the invention also relates to any motor vehicle, comprising the body structure described above, and a heat engine associated with another mode of propulsion such as an electric machine, a hydraulic motor, or a hybrid heat-pneumatic engine or an engine operating on gaseous fuel.
  • a heat engine associated with another mode of propulsion such as an electric machine, a hydraulic motor, or a hybrid heat-pneumatic engine or an engine operating on gaseous fuel.
  • FIGS. 2 and 3 are examples of silencers - respectively referenced S2 and S3 - according to the invention integrated in an exhaust line L of a heat engine M of a hybrid vehicle having another means of non-thermal propulsion.
  • the arrow F indicates the general flow direction of the exhaust gases from the engine M, the terms "upstream” and "downstream” referring to said general direction of flow.
  • These examples of silencers according to the invention incorporate what is generally referred to in the field of mufflers under the terms of intermediate silencer and rear silencer.
  • Various methods can be used to manufacture the envelopes and ducts of the examples of silencers, described below, which are made of metal: one can use the technique of stamping, or the so-called "rolled-crimped" technique.
  • the invention is not limited to an application to hybrid vehicles, and is also advantageously applicable for vehicles only equipped with a heat engine.
  • the figure 1 represents a first example of S1 silencer according to the state of the art which comprises two envelopes: an upstream envelope E1 and a downstream envelope E2, both substantially aligned and arranged along the longitudinal axis of the vehicle.
  • the upstream envelope E1 comprises a side wall which defines a so-called upstream volume 1a substantially parallelepipedic, and which is closed at its transverse ends by upstream end 3 and downstream transverse transverse partitions 4, also called cups.
  • the envelopes define a substantially parallelepipedal volume, with a substantially rectangular or square section, here slightly frustoconical. Alternatively, their section can be circular for define a cylindrical volume, or be oval or have another shape, as long as the envelope in question defines an elongated geometric shape for accommodating conduits.
  • the downstream envelope E2 is disposed at a distance from the upstream envelope E1. It comprises a lateral wall and transverse end partitions or cups upstream 7 and downstream 8. It is partitioned by an intermediate partition 9, so as to define an intermediate volume 1b and a downstream volume 2.
  • the envelopes E1, E2 of the silencer thus define three volumes: the volume 1a of the upstream envelope E1, and the intermediate volume 1b and the downstream volume 2 of the downstream envelope E2.
  • an optional, highly perforated, non-acoustically active intermediate cup may be installed to hold the end of the "go" and "return” tubes (described later) in the middle of the envelope E1.
  • the silencer S1 comprises an exhaust gas supply pipe 10, which is connected upstream to the exhaust line L, and which opens into the volume 1b through the volume 1a through the cup 3 and the cup 4 of the envelope E1 then the upstream cup 7 of the envelope E2.
  • the duct portion 10 in the volume 1b is provided with perforations 11 distributed over its substantially cylindrical periphery.
  • This duct 10 is extended by a "go" duct 12 which passes through the intermediate cup 9 to open inside the volume 2 of the downstream envelope E2, approximately half (between one third and two thirds) of the length of volume 2.
  • the silencer also comprises a "return" conduit 13 under the conduit "go" 12. It opens, downstream side, in the volume 2 of the downstream envelope E2 about half (between one third and two thirds of the length of the volume 2), in a similar way to the duct 12. It opens, upstream side, in the upstream volume 1a of the upstream envelope E1 to approximately half (between the third and the two third), the length of the volume 1a, through the intermediate partition 9, the intermediate volume 1b and the cups 7 and 4.
  • the silencer S1 comprises a discharge duct 14, which opens, on the upstream side to approximately half (between the third and two thirds), the length of the volume 1a of the upstream envelope E1 and downstream side to the outside the downstream casing E2, passing through the cups 4, 7, 9 and 8 successively.
  • ducts pass through walls, here, in this case cups
  • the mounting may be forced or around the orifices provided with sealing means to preserve the tightness of the envelope, (especially at least one of the end cups 4, 7 which are facing) or the assembly may leave a certain clearance between the conduit and the orifice to allow a certain movement between the conduit and the wall / the cup through which it passes, which allows the whole envelopes and conduits to know slight dimensional changes in use, especially due to thermal expansion, without the whole is too mechanically stressed.
  • the ducts 10,12,13,14 are here all cylindrical, but their section may be of different shape, oval for example.
  • the section of the ducts 10 and 12 is identical to that of the ducts 13 and 14, in order to maintain substantially constant passage sections all along the path of the gases.
  • the section of the evacuation duct 14 (or the sum of the sections of the evacuation ducts when they are two) may also be greater than that of the supply ducts, "go" and “return” 10,12,13, in order to reduce the speed of the gases and therefore the associated blast sound.
  • the duct 12 is in the extension of the duct 10, beyond the perforations 11 with which the supply duct 10 is provided.
  • the two ducts can be one. They can be attached to each other by any known technique (welding %) by direct contact or at a distance from each other.
  • the path of the exhaust gas in the silencer S1 is as follows: the gases enter the silencer S1 through the supply duct 10 in a direction represented by the arrow f1, then follow the conduit "go" 12 disposed in the extension of conduit 10. They therefore cross the volume 1a and open into the volume 1b in the conduit 10, and the conduit 12 brings them into the volume 2 of the downstream envelope E2 along a first path "go". Then, as indicated by the arrow f2, they start in the opposite direction, according to a second path "return” in the conduit "return” 13 substantially parallel to the conduits 10 and 12 in a direction represented by the arrow f3 and open into the volume 1a of the upstream envelope E1.
  • conduits 12, 13 which ensure the mechanical attachment of the upstream envelopes E1 and downstream E2 between them.
  • the shape of the envelopes may vary, and adapt flexibly both to the size of the conduits that must pass through, but also to the environment of the exhaust line.
  • the silencer S1 is housed in the tunnel of a vehicle underbody, and the zone between the two envelopes, less congested, the silencer will be able, in the tunnel, exploited for example so that the ceiling or the inner sides of the tunnel accommodate mechanical reinforcements.
  • the figure 2 represents a first example of silencer S2 according to the invention. Other things being equal, the silencer S2 has two differences compared to the silencer S1.
  • the volumes 1a, 1b and 2 are delimited by a single envelope E.
  • This single envelope E then has two intermediate partitions 9 and 9 'which partition it into three.
  • the shape of the exhaust duct 14 ' is different, having a bend at the volume 2, so that the exhaust gases are guided by this duct from the volume 1a to the volume 2 in a forward path (arrow f6), then from the volume 2 to the volume 1a again (arrow f7), the conduit 14 'opening out of the envelope E through the cup 3.
  • the figure 3 represents the second example S3 silencer which is a variant of the silencer S2.
  • the noticeable difference from the S2 muffler lies in the way the exhaust gases enter the muffler.
  • the silencer is not intended to be disposed along the longitudinal axis of the vehicle, but along its transverse axis.
  • the upstream part of the exhaust line L to which the silencer S3 must be connected remains orientated along the longitudinal axis of the vehicle.
  • the upstream part of the feed duct 10 is thus bent in the volume 1a, so that the gases coming from the exhaust line along the longitudinal axis can be guided to take a 90 ° orientation (arrow f1 ').
  • the conduit 10 passes through the envelope E not by its upstream cup but through its side wall, near its upstream end, by an opening made for this purpose.
  • the bend of the conduit 10 then being provided outside the envelope E.
  • the outlet of the discharge conduit 14 out of the envelope E is through the upstream cup 3, and has a bend outside the casing to allow connection downstream to the exhaust line (arrow f8 ').
  • the figure 4 represents the acoustic scheme of the silencer according to the invention, with the usual conventions of this type of representation. It is optimal when the total volume corresponding to 1a + 1b + 2 is divided in three in the approximate distribution where the volume 1b is about 3 liters, the volume 2 about 3 liters also, and the volume 1a about 6 liters, so preferably with the relation 2 substantially equal to 1b, and 1a greater than 2 and 1b and approximately corresponding to the sum 2 + 1b.
  • the ducts 12, 13 and 14 are organized in such a way that their lengths increase when the flow of exhaust gas is followed: the length of the "go" duct 12 is smaller than that of the "return” ducts. 13, which itself is smaller than that of the evacuation duct 14.
  • This distribution makes it possible to obtain resonance frequencies of the Helmholtz resonators resulting from the coupling of the ducts (masses) and the volumes (stiffness) given, with the lengths of the duct. 12, 13 and 14 minimum for a given section.
  • the volume is thus maximally used for the desired function of the noise filtering by these volumes, above the selected resonant frequencies.
  • the invention has defined an acoustic scheme allowing a great flexibility of realization, which makes it possible to adapt the external dimensioning of the silencer to environments, in particular under tunnel, varied.
  • the particularity of the path of the exhaust gases that make a return trip in the ducts passing through the envelope or envelopes, then a last return trip through the exhaust ducts contributes to this flexibility, and, overall, to a remarkable compactness of the muffler given the acoustic performance provided by its acoustic scheme.

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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)

Claims (13)

  1. Schalldämpfer (Sl, S2, S3), der dazu bestimmt ist, eine Abgasleitung (L) einer Wärmekraftmaschine (M) auszustatten, dadurch gekennzeichnet, dass er einen oder mehrere Mäntel umfasst, der/die drei Volumen (1a, 1b, 2), stromaufwärtiges (1a), Zwischen- (1b) und stromabwärtiges (2) Volumen genannt, abgrenzt/abgrenzen, die nacheinander angeordnet sind und von einer Vielzahl von Leitungen durchquert werden, darunter: - eine Versorgungsleitung (10), die die Abgase von der Maschine (M) in den Zwischenraum (1b) unter Durchqueren des stromaufwärtigen Volumens (1a) zuführt, - eine Wegleitung, "Hinwegleitung" (12) genannt, die die Abgase von dem Zwischenvolumen (1b) in das stromabwärtige Volumen (2) führt, - eine Wegleitung, "Rückwegleitung" (13) genannt, die die Abgase von dem stromabwärtigen Volumen (2) zu dem stromaufwärtigen Volumen (1a) unter Durchqueren des Zwischenvolumens (1b) führt, und - eine Ableitung (14), die die Abgase aus dem Schalldämpfer über einen Weg, "Hin-Rückweg" genannt, von dem stromaufwärtigen Volumen (1a) zu dem stromabwärtigen Volumen (2) und dann erneut zu dem stromaufwärtigen Volumen (1a) führt, wo sie ins Freie mündet.
  2. Schalldämpfer (S1, S2, S3) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Ableitung (14) einen "Hin-Rückweg" genannten Weg, der ein Winkelrohr in dem stromabwärtigen Volumen (2) aufweist, definiert.
  3. Schalldämpfer (S1, S2, S3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die drei Volumen (1a, 1b, 2) in einen Mantel, zwei oder drei Mäntel verteilt sind.
  4. Schalldämpfer (S1, S2, S3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die drei Volumen (1a, 1b, 2) in mehrere Mäntel (E1, E2) verteilt sind, die von Seitenwänden und Querendwänden, Schalen (3, 4, 7, 8) genannt, abgegrenzt sind, wobei die Mäntel miteinander durch mindestens zwei Leitungen verbunden sind, die mindestens zwei Schalen gegenüber von zwei aufeinanderfolgenden Mänteln durchqueren.
  5. Schalldämpfer (S1, S2, S3) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Ableitung (14) von der stromaufwärtigen Schale (3) des Mantels, der das stromaufwärtige Volumen (1a) des Schalldämpfers bildet, oder von der stromabwärtigen Schale (8) des stromaufwärtigen Volumens (2) des Schalldämpfers mündet.
  6. Schalldämpfer (S1, S2, S3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er mehrere, insbesondere zwei, "Hinwegleitungen" (12) und/oder mehrere, insbesondere zwei "Rückwegleitungen" (13) umfasst, und/oder mehrere, insbesondere zwei, Ableitungen (14, 14'), die insbesondere zueinander auf mindestens einem Teil ihrer Längen parallel sind.
  7. Schalldämpfer (S1, S2, S3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Zwischenvolumen (1b) im Wesentlichen gleich oder ähnlich dem stromabwärtigen Volumen (2) ist.
  8. Schalldämpfer (S1, S2, S3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das stromaufwärtige Volumen (la) im Wesentlichen zweimal größer ist als das Zwischenvolumen (1b) und/oder als das stromabwärtige Volumen (2).
  9. Schalldämpfer (S1, S2, S3) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die "Hinwegleitung" (12) eine Länge kleiner als die der "Rückwegleitung" (13) hat, die selbst eine Länge kleiner als die der Ableitung (14) hat.
  10. Abgasleitung, die einen Schalldämpfer nach einem der vorhergehenden Ansprüche umfasst.
  11. Fahrzeug, das eine Abgasleitung nach dem vorhergehenden Anspruch aufweist, dadurch gekennzeichnet, dass der Schalldämpfer entlang der Längsachse des Fahrzeugs angeordnet ist.
  12. Fahrzeug, das eine Abgasleitung nach Anspruch 10 enthält, dadurch gekennzeichnet, dass der Schalldämpfer entlang der Querachse des Fahrzeugs angeordnet ist.
  13. Fahrzeug nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass es einen Wärmekraftmotor umfasst, der mit einem anderen Antriebsmodus, der aus einer Elektromaschine, einem Hydraulikmotor, einer pneumatischen Hybrid-Wärmekraftmaschine, einer Maschine, die mit gasförmigem Kraftstoff funktioniert, ausgewählt ist, assoziiert ist.
EP14741344.7A 2013-08-29 2014-06-19 Schalldämpfer für eine abgasleitung einer wärmekraftmaschine Not-in-force EP3039257B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1358247A FR3010136B1 (fr) 2013-08-29 2013-08-29 Silencieux destine a equiper une ligne d’echappement d’un moteur thermique
PCT/FR2014/051521 WO2015028727A1 (fr) 2013-08-29 2014-06-19 Silencieux destine a equiper une ligne d'echappement d'un moteur thermique

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US3687637A (en) * 1969-09-18 1972-08-29 Saburo Okamura Combined silencer and exhaust gas cleaner
JP2971341B2 (ja) * 1994-10-19 1999-11-02 本田技研工業株式会社 車両の排気装置
CN2332815Y (zh) * 1997-06-25 1999-08-11 新疆交通科学研究所 高效低耗新型消声器
JP4166593B2 (ja) * 2003-02-20 2008-10-15 カルソニックカンセイ株式会社 消音器
JP4577282B2 (ja) * 2006-08-11 2010-11-10 トヨタ自動車株式会社 エンジンの排気装置、その製造方法、マフラ及び車両
CN202081937U (zh) * 2011-05-05 2011-12-21 北汽福田汽车股份有限公司 用于车辆的消音器
CN202165139U (zh) * 2011-07-18 2012-03-14 湖北通达股份有限公司 一种微型面包车用消声器
CN202673403U (zh) * 2012-06-05 2013-01-16 徐州重型机械有限公司 一种起重机及其排气系统的消声器

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FR3010136A1 (fr) 2015-03-06
FR3010136B1 (fr) 2015-08-21
WO2015028727A1 (fr) 2015-03-05
CN105556074A (zh) 2016-05-04
EP3039257A1 (de) 2016-07-06

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