EP3014081B1 - Schalldämpfer zur montage im abgasstrang eines verbrennungsmotors - Google Patents

Schalldämpfer zur montage im abgasstrang eines verbrennungsmotors Download PDF

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Publication number
EP3014081B1
EP3014081B1 EP14731755.6A EP14731755A EP3014081B1 EP 3014081 B1 EP3014081 B1 EP 3014081B1 EP 14731755 A EP14731755 A EP 14731755A EP 3014081 B1 EP3014081 B1 EP 3014081B1
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EP
European Patent Office
Prior art keywords
volume
muffler
upstream
envelope
downstream
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Active
Application number
EP14731755.6A
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English (en)
French (fr)
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EP3014081A1 (de
Inventor
Laurent Gagliardini
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Technoboost SAS
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Technoboost SAS
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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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers 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
    • 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

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.
  • the invention firstly relates to a silencer intended to equip an exhaust line of a heat engine, silent which comprises one or more envelope (s) which delimits (s) three volumes, said upstream, intermediate and downstream , successively arranged and traversed by a plurality of ducts, of which: a supply duct bringing the exhaust gases from the engine into the intermediate volume through the upstream volume, a so-called “go" duct leading the gases exhaust from the intermediate volume in the downstream volume, - a so-called “return” path conduit leading the exhaust gas from the downstream volume to the upstream volume through the intermediate volume, and - an evacuation pipe arranged predominantly outside the envelope or envelopes and opening upstream volume along the upstream volume of the muffler out of said envelope or envelopes.
  • the silencer therefore has the particularity of having a discharge duct which is disposed substantially outside the casings, which is very interesting in terms of dimensioning: one can thus maintain a sufficient level of free volume in the envelopes to ensure the attenuation acoustically required, by "exiting" the exhaust duct, which, in fact, can then be dimensioned more free, in terms of length, shape (rectilinear or not) and orientation, according to, for example, that it runs along the envelope or envelopes "down” towards the downstream or being oriented upstream of the silencer, in "Going up” to the exhaust line on the engine side.
  • 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 has three volumes divided into one, two or three envelopes.
  • 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 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 so to reduce 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 the consistency of the whole without having to foresee (in any case more so mandatory) specific mechanical means to maintain correct relative positioning of the envelopes relative to each other.
  • the exhaust duct runs along the intermediate volume and also possibly also the downstream volume over at least part of their length.
  • the evacuation duct opens out of the upstream end transverse wall of the upstream envelope.
  • This choice proved to be the most advantageous from the dimensional point of view, even if it may be surprising, since, in fact, the duct "leaves" the silencer in its most upstream part, before, for example, to follow towards the downstream, the silencer on an appropriate length.
  • the exhaust duct opens from the upstream cup of the envelope defining the upstream volume of the silencer.
  • the silencer according to the invention may comprise several, in particular two exhaust ducts, in particular parallel to each other over at least part of their lengths. They may follow symmetrically the upstream envelope, on each side thereof, for example in the lower part.
  • the silencer according to the invention may also comprise several, in particular two, "go” path conduits, and / or more, in particular two "return” path conduits.
  • 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 have a smaller section than a unit duct, so as to keep the same gas channeling capacity at a given flow rate, and to maintain a similar pressure drop.
  • the intermediate volume of the silencer according to the invention is substantially equal to or close to the downstream volume thereof.
  • the upstream volume of the silencer according to the invention is substantially twice as large as the intermediate volume and / or the downstream volume thereof. It is thus preferably equal to the sum of the intermediate and downstream volumes.
  • the so-called “go" path duct is of a length less than that of the so-called “return” path duct, itself of shorter length than that of the evacuation duct.
  • 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.
  • a great advantage of the silencer according to the invention is that it can easily be arranged in the tunnel.
  • the space between the two envelopes, in the configuration with several envelopes, which makes, in fact, in this zone 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 house for example internal mechanical reinforcements of the tunnel, for example. And it is compact enough to occupy only part of the length of the tunnel available, which makes it possible to consider also housing in the tunnel other organs, such as gas tanks or electrical machines.
  • 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.
  • the figure 1 and the figure 2 represent a first example of a silencer S 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, and these two figures will be described together.
  • the arrow F indicates the direction general flow of the exhaust gas from the engine M, the terms "upstream” and “downstream” referring to said general direction of flow.
  • the silencer according to the invention incorporates what is generally referred to in the field of mufflers under the terms of intermediate silencer and rear silencer.
  • 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 silencer S according to this example 1 comprises two envelopes: an upstream envelope E1 and a downstream envelope E2, both substantially aligned and arranged along the longitudinal axis X of the vehicle.
  • the upstream envelope E1 comprises a side wall 5 which defines a substantially parallelepipedal volume, and which is closed at its transverse ends (along the transverse Y axis, perpendicular to the X axis) by upstream end transverse partitions 3 and downstream 4, also called cups.
  • the Z axis is the vertical.
  • the downstream envelope E2 is disposed at a distance from the upstream envelope E1, it has a substantially frustoconical cross section. It comprises a side wall 6 and transverse end bulkheads or cups upstream 7 and downstream 8 and defines a volume 2. For mechanical strength issues, an intermediate cup strongly perforated and without acoustic role can be installed to maintain the end of the tubes "go" and "return" in the middle of the envelope E2.
  • the upstream envelope E1 is partitioned by an intermediate partition 9, so as to delimit an upstream volume 1a and an intermediate volume 1b.
  • the envelopes E1, E2 of the silencer thus define three volumes: the volume 1a and the intermediate volume 1b of the upstream envelope E1, and the volume 2 of the downstream envelope E2.
  • the silencer S comprises an exhaust gas supply duct 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 9.
  • the duct portion 10 in the volume 1b is provided with perforations 11 distributed throughout its substantially cylindrical periphery.
  • This duct 10 is extended by a "go" duct 12 which passes through the downstream cup 4 of the upstream casing E1 and which then passes through the downstream casing E2 through an opening in its upstream end wall 7. It opens at the end interior of the volume 2 of the downstream envelope E2 to approximately half of its length.
  • the muffler also comprises two "return" conduits 13, 13 ', arranged side by side, parallel to the longitudinal axis X, and under the conduit "go" 12. They open, downstream, in the volume 2 of the envelope downstream E2 approximately to half or two thirds of its length, similarly to the conduit 12. They open, upstream side, in the upstream volume 1a of the upstream envelope E1 (approximately half or one third of the length of the 1a), passing through the volume 1b and the intermediate partition 9. They therefore cross the intermediate partition 9 and the downstream partition 4 of the upstream envelope E1 and the upstream partition 4 of the downstream envelope E2 by openings made in those -this.
  • the silencer S comprises two evacuation conduits 14, 14 ', arranged symmetrically on either side of the envelopes E1, E2. They open at their first ends in the volume 1a of the upstream envelope E1 through an opening in the partition 3. (They can extend or not in said volume 1a, without crossing the intermediate partition 9).
  • the partition 3 is thus provided with two symmetrical openings for these evacuation conduits, and with an opening for the supply duct 10.
  • the openings for the evacuation ducts 14, 14 ' are at above the opening for the supply duct 10.
  • the ducts 14, 14 ' make an elbow at the outlet of the partition 3 and along each side the upstream envelope E1 then at least a portion of the downstream envelope E2 , to open on either side of the downstream envelope E2 approximately in the middle of its length. They can also open upstream, or at the level of the cup 8 or beyond.
  • the ducts 10, 12, 13, 13 ', 14, 14' are here all cylindrical, but their section could be of different shape, oval for example.
  • the section of conduits 10 and 12 is greater than that of each of the other conduits 13,13 ', 14, 14', and this, to maintain substantially constant passage sections throughout the path of the gas.
  • Other dimensional or positioning choices or number of conduits can be made while remaining within the scope of the invention.
  • the section of the evacuation duct 14 (or the sum of the ducts) sections of the ducts 14 and 14 'when they are two) may 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 noise .
  • the duct 12 is in the extension of the duct 1, beyond the perforations 11 of 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 gases in the silencer is more particularly illustrated in the figure 2 the gases enter the silencer S through the supply duct 10 in a direction represented by the arrow f1, then follow the duct "go 12 disposed in the extension of the duct 10. They therefore cross the volume 1a and open into the volume 1b in the duct 10, then the duct 12 brings them into the volume 2 of the downstream envelope E2 in a first "go" path. Then, as indicated by the arrow f2, they start in the opposite direction, according to a second path "return” in the conduits "return” 13,13 'arranged above the ducts 10 and 12 in a direction represented by the arrow f3 and open into the volume 1a of the upstream envelope E1.
  • 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 is located in the tunnel of a vehicle underbody, and the zone between the two envelopes, less congested, of the silencer will be able to be, in the tunnel, exploited for example so that the ceiling or the sides Tunnel interiors accommodate mechanical reinforcements.
  • the figure 3 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 according to the approximate distribution where the volume 1a is about 3 liters, the volume 1b about 3 liters also, and the volume 2 about 6 liters, with therefore preferably the relation 1a substantially equal to 1b and 2 greater than 1a and 1b and approximately corresponding to the sum 1a + 1b.
  • the ducts 12, 13 and 13 ', 14 and 14' are arranged in such a way that their lengths increase when the flow of exhaust gas is followed: the length of the "go" duct 12 is less than that of the "return” ducts 13, 13 ', themselves lower than those of the exhaust ducts 14, 14'.
  • This distribution makes it possible to obtain resonance frequencies of the Helmholtz resonators resulting from the coupling of the ducts (masses) and volumes (stiffness) given, with the duct lengths 12, 13 and 13 ', 14 and 14' minimum for one section. given.
  • the volume is thus maximally used for the desired function of the noise filtering by these volumes, above the selected resonant frequencies.
  • This architecture is particularly favorable when the silencer is intended to be housed at least partly in the tunnel of the vehicle body, because the available volume under the tunnel is extended, as the general form of the silencer of the invention. It can be viewed with the figure 4 , which represents a vehicle body structure C seen from below at its tunnel T, with the silencer S of Example 1 housed in the tunnel (the downstream envelope E2 is truncated in its downstream part, and the simplified representation to be clearer).
  • FIG. 5 corresponds to an example 2 which differs from Example 1 in that the volumes 1a, 1b and 2 are distributed differently in the two envelopes.
  • the figure 6 corresponds to an example 3, which differs from Example 1 in that 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 figure 7 corresponds to an example 4, which differs from Example 1 in that the volumes 1a, 1b and 2 are each delimited by an envelope E1 ", E2" and E3.
  • 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 final one-way trip through the out-of-envelope 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 (10)

  1. Schalldämpfer (S), der dazu bestimmt ist, einen Abgasstrang (L) eines Verbrennungsmotor (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 dem Motor (M) in das Zwischenvolumen (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, 14'), die hauptsächlich außerhalb des Mantels/der Mäntel angeordnet ist und aus dem stromaufwärtigen Volumen (1a) entlang des stromaufwärtigen Volumens (1a) des Schalldämpfers aus dem Mantel oder den Mänteln mündet.
  2. Schalldämpfer nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die drei Volumen (1a, 1b, 2) auf einen, zwei oder drei Mäntel verteilt sind.
  3. Schalldämpfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Volumen auf mehrere Mäntel verteilt sind, die von Seitenwänden und Querendwänden, die Schalen genannt werden, abgegrenzt sind, wobei die Mäntel miteinander durch mindestens zwei Leitungen verbunden sind, die mindestens zwei Schalen gegenüber von zwei aufeinanderfolgenden Mänteln durchqueren.
  4. Schalldämpfer (S) nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Ableitung (14, 14') auch entlang des Zwischenvolumens (1b) und eventuell auch des stromabwärtigen Volumens (2) auf mindestens einem Teil ihrer Länge verläuft.
  5. Schalldämpfer (S) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Ableitung (14, 14') von der stromaufwärtigen Schale (3) des Mantels, der das stromaufwärtige Volumen (1a) des Schalldämpfers definiert, mündet.
  6. Schalldämpfer (S) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er mehrere, insbesondere zwei Ableitungen (14, 14') umfasst, die insbesondere zueinander auf mindestens einem Teil ihrer Längen parallel sind.
  7. Schalldämpfer (S) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er mehrere, insbesondere zwei "Hinwegleitungen" (12, 12') und/oder mehrere, insbesondere zwei "Rückwegleitungen" (13, 13'), umfasst.
  8. Schalldämpfer (S) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Zwischenvolumen (1b) im Wesentlichen gleich oder ähnlich dem stromabwärtigen Volumen (2) ist.
  9. Schalldämpfer (S) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das stromaufwärtige Volumen (1a) im Wesentlichen zweimal größer ist als das Zwischenvolumen (1b) und/oder als das stromabwärtige Volumen (2).
  10. Schalldämpfer (S) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die "Hinwegleitung" (12) eine Länge (L1) hat, die kleiner ist als die (L2) der "Rückwegleitung" (13), die selbst eine Länge hat, die kleiner ist als die (L3) der Ableitung (14, 14').
EP14731755.6A 2013-06-25 2014-05-28 Schalldämpfer zur montage im abgasstrang eines verbrennungsmotors Active EP3014081B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1356030A FR3007453B1 (fr) 2013-06-25 2013-06-25 Silencieux destine a equiper une ligne d'echappement d'un moteur thermique
PCT/FR2014/051271 WO2014207335A1 (fr) 2013-06-25 2014-05-28 Silencieux destine a equiper une ligne d'echappement d'un moteur thermique

Publications (2)

Publication Number Publication Date
EP3014081A1 EP3014081A1 (de) 2016-05-04
EP3014081B1 true EP3014081B1 (de) 2018-04-04

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EP14731755.6A Active EP3014081B1 (de) 2013-06-25 2014-05-28 Schalldämpfer zur montage im abgasstrang eines verbrennungsmotors

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EP (1) EP3014081B1 (de)
FR (1) FR3007453B1 (de)
WO (1) WO2014207335A1 (de)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP3050530B2 (ja) * 1997-02-14 2000-06-12 フタバ産業株式会社 マフラ構造

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EP3014081A1 (de) 2016-05-04
FR3007453B1 (fr) 2015-06-26
WO2014207335A1 (fr) 2014-12-31
FR3007453A1 (fr) 2014-12-26

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