EP3828396B1 - Silencieux de gaz d'échappement - Google Patents
Silencieux de gaz d'échappement Download PDFInfo
- Publication number
- EP3828396B1 EP3828396B1 EP20203191.0A EP20203191A EP3828396B1 EP 3828396 B1 EP3828396 B1 EP 3828396B1 EP 20203191 A EP20203191 A EP 20203191A EP 3828396 B1 EP3828396 B1 EP 3828396B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer shell
- muffler
- shell
- inner shell
- accordance
- 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.)
- Active
Links
- 230000003584 silencer Effects 0.000 title description 23
- 238000005192 partition Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 22
- 230000002093 peripheral effect Effects 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000002845 discoloration Methods 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000008093 supporting effect Effects 0.000 description 3
- 238000005494 tarnishing Methods 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 230000006735 deficit Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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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
- 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
- F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
-
- 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
- F01N13/007—Apparatus used as intake or exhaust silencer
-
- 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
-
- 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
- F01N1/08—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
- F01N13/14—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 thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
-
- 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
- F01N13/14—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 thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
- F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
- F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/02—Tubes being perforated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/08—Two or more expansion chambers in series separated by apertured walls only
-
- 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
- F01N2490/14—Dead or resonance chambers connected to gas flow tube by relatively short side-tubes
Definitions
- the present invention relates to an exhaust gas silencer according to the preamble of claim 1, which can be used, for example, in the exhaust system of an internal combustion engine in a motor vehicle.
- the hot combustion exhaust gases emitted by an internal combustion engine flow through the mufflers used in exhaust systems of internal combustion engines.
- These combustion exhaust gases can have a temperature in the range of several 100° C. and thus lead to a comparatively high thermal load on the system areas of an exhaust system through which they flow. This can lead to tarnishing, ie thermally induced discoloration, which is undesirable in particular when system areas of an exhaust system, such as in particular exhaust silencers used as rear silencers, are installed in a vehicle in a visible manner.
- An exhaust silencer is from EP 0 523 008 A1 known.
- an outer shell is completely covered by an inner shell on its inside facing the muffler interior.
- the inner shell has formations providing support areas, in which the partitions are supported on the inner shell on the one hand and the inner shell on the outer shell on the other hand.
- the inner shell is firmly connected to the outer shell together with end walls fixed to the outer shell by flanging.
- an exhaust gas muffler whose outer shell is completely covered on its inside by an inner shell arranged at a distance from the outer shell. In its end areas, the inner shell, together with end walls, is firmly connected to the outer shell by flanging.
- the DE 12 68 434 B discloses an exhaust muffler in which an outer shell has indentations supporting the dividing walls in longitudinal regions in which partitions arranged in a muffler interior are carried on it. Between these indentations of the outer shell and the partition walls, the end regions of an inner shell covering the outer shell in the longitudinal region between the partition walls are held on its inside.
- the U.S. 2004/0178016 A1 discloses an exhaust gas muffler in which an inner shell covering an outer shell on its inside has support regions in its end regions with which the inner shell is supported on the inside of the outer shell. In holding areas located between the end areas, the inner shell is held at a distance from the outer shell by holding material positioned between it and the outer shell.
- an exhaust gas muffler for an exhaust system of an internal combustion engine according to claim 1.
- This includes muffler housing with an outer shell enclosing a muffler interior through which exhaust gas can flow and an inner shell arranged in the muffler interior and at least partially covering the outer shell on an inside facing the muffler interior.
- the outer shell can comprise an outer peripheral wall that is elongated in the direction of a longitudinal axis of the muffler and surrounds it, and an end wall connected to the outer peripheral wall on both axial end regions of the outer peripheral wall, and the inner shell can, at least in association with the outer peripheral wall, comprise at least one inner shell part that at least partially covers the outer peripheral wall on its inside .
- a stable structure of the muffler housing that surrounds the interior of the muffler and in which a thermally induced discoloration of the outer shell can be ruled out can alternatively be provided in that the outer shell comprises two outer shell parts connected to one another in a connecting edge area, and that the inner shell, in association with at least one preferably each outer shell part comprises an inner shell part that at least partially covers it on its inside.
- an intermediate space is formed between the outer shell and the inner shell, with the inner shell being supported directly on the outer shell in at least one support area.
- At least one intermediate wall dividing the muffler interior into a plurality of chambers can be provided in the muffler interior.
- at least one partition wall can be supported in a peripheral edge area with respect to the outer shell with the inner shell being supported in between.
- the intermediate wall is supported in the area of a support area with respect to the outer shell.
- the intermediate wall is stably supported where the inner shell is also in direct contact with the outer shell.
- a defined holding of the inner shell can be achieved without involving a material-locking connection with the outer shell, in that the inner shell is held on the outer shell by the intermediate wall.
- a further improved supporting effect for the inner shell can be achieved by providing a plurality of intermediate walls arranged one after the other in the direction of a longitudinal axis of the silencer in the silencer interior, and by the inner shell in the area of several, preferably all, intermediate walls in a respective support area of the inner shell with respect to the outer shell is supported.
- the outer shell can be covered by the inner shell essentially on its entire inside. This is particularly useful when there is a risk over the entire length of the outer shell that thermal stress will cause discoloration of the outer shell.
- the inner shell In order to be able to prevent the inner shell from hitting the outer shell caused by vibrations even in areas in which direct support of the inner shell in relation to the outer shell is not to be implemented, the inner shell is in holding areas in its end areas that do not have a support area in relation to the outer shell is held at a distance from the outer shell by a holding material.
- the holding material can, for example, comprise wire material, such as wire mesh, woven wire, knitted wire or nonwoven wire.
- At least one recess can be provided in the inner shell.
- a pipe arranged in the interior of the outer shell can be positioned such that it engages in such a recess, or there is the possibility of conducting exhaust gas flowing into or out of the silencer interior through such recesses.
- a design that is easy and inexpensive to implement and resistant to exhaust gases and the thermal stress generated by them can be implemented, for example, in that the inner shell is constructed from sheet metal material.
- the invention also relates to an exhaust system for an internal combustion engine, comprising at least one exhaust silencer according to one of the preceding claims.
- the exhaust silencer 10 shown in longitudinal section has a silencer housing 12 with an outer shell, generally designated 14 .
- the outer shell 14 comprises an outer peripheral wall 16 that extends in the direction of a longitudinal axis A of the muffler and surrounds it.
- the outer peripheral wall 16 is firmly connected to an end wall 24, 26 axially closing off a muffler interior 22, for example by welding and/or flanging.
- a plurality of intermediate walls 28, 30, 32 are provided in succession in the direction of the longitudinal axis A of the muffler.
- the intermediate walls 28, 30 arranged closest to the end walls 24, 26 form respective end intermediate walls.
- a plurality of axially consecutive chambers 34, 36, 38, 40 are formed in the interior space 22 of the silencer.
- An inlet tube 42 passes through end wall 24 and intermediate wall 28 and extends through chamber 34 to chamber 36 and is open to it. In the area of the chamber 34 , the inlet pipe 42 can be open to the chamber 34 via a plurality of openings 44 .
- An outlet tube 46 passes through end wall 26 and intermediate walls 32, 30 and extends into chamber 36 and is open to it. In the area of the chamber 38 the outlet pipe 46 is open to the chamber 38 via a plurality of openings 48 .
- the chamber 38 and the chamber 40 are connected to one another via a tube 50 which acts as a resonator tube and thus provides a resonator neck, so that the chamber 40 can act in conjunction with the tube 50 as a Helmholtz resonator.
- the basic structure of the exhaust gas silencer 10 with its silencer housing 12 described above only is shown as an example. It could be more or less than that in 1 shown partitions may be provided. Likewise, more or fewer inlet pipes and/or outlet pipes could be provided, and the chambers formed in the interior of the silencer could communicate with one another in a different way.
- the muffler housing 12 could be formed with two half-shells, each of which may provide part of the outer peripheral wall and part of the two end walls. Such half-shells, which can be designated as outer shell parts, for example, can be firmly connected to one another in a connecting edge region by material connection, for example welding, and/or by flanging.
- such half-shells of a muffler housing can also be provided as sheet metal formed parts and can be provided in the area of the outer peripheral wall provided by this or also in the area provided by this End walls have respective openings for the passage of one or more inlet pipes and one or more outlet pipes, respectively.
- the exhaust-gas muffler 10 comprises an inner shell 54 that at least partially covers an inside 52 of the outer shell 14 or the outer peripheral wall 16.
- the inner shell 54 is preferably constructed with one or more inner shell parts 56 provided as sheet metal formed parts, which, for example, in the circumferential direction around the muffler Longitudinal axis A can be arranged one after the other or, in the case of the design of the outer shell with two outer shell parts, each provided in association with one of the two outer shell parts and this can be arranged at least partially overlapping on its inside.
- An intermediate space 58 is formed between the inner shell 54 and the outer shell 14 or, in the exemplary embodiment shown, the outer peripheral wall 16 .
- the distance D existing between the outer shell 14 and the inner shell 54 can be in the range of 3 mm to 7 mm, preferably about 5 mm.
- the intermediate shell 54 is shaped with radial protrusions 55 extending in the circumferential direction in such a way that, for example, it bears against the inside 52 of the outer shell 14 over its entire extent in the circumferential direction around the longitudinal silencer axis A, and thus directly against the Outer shell 14 is supported.
- These support areas 60 provided by the radial formations 55 can be positioned in such a way that they are located where the intermediate walls 28, 30, 32 are also arranged, so that they are at least in a circumferential area corresponding to the extension area of the inner shell 54 with the inner shell 54 being supported in between the outer shell 14 are supported. In the area of the support areas, the inner shell 54 is held on the outer shell 14 by the radial clamping effect provided by the intermediate walls 28 , 30 , 32 . An additional material connection of the inner shell 54 to the outer shell 14 is not required and is not provided. A material connection of the intermediate walls 28, 30, 32 with the inner shell 54 or the outer shell 14 is also not required or provided.
- the intermediate walls 28, 30, 32 are held axially with respect to the inner shell 54 by their engagement in the radial formations 55 of the inner shell 54.
- the outer shell 14 or the outer peripheral wall 16 can also have corresponding radial formations extending in the circumferential direction, into which the radial formations 55 of the inner shell 54 can partially radially engage and in which, for example, in circumferential areas, in which the outer shell 14 is not covered by the inner shell 54, the intermediate walls 28, 30, 32 can be positioned with their radially outer area engaging, so that a defined radial and axial mounting of the intermediate walls 28, 30, 32 with respect to the Muffler housing 12 is guaranteed.
- the inner shell 54 extends almost over the entire axial expansion area of the outer shell 14 or silencer interior 22 up to close to the end walls 24, 26.
- the inner shell 54 is supported relative to the outer shell 14 in a plurality of retaining regions 62, 64 via retaining material 66, 68 provided there.
- This holding material can, for example, wire material such. B. a wire mesh or a wire fleece or the like, which is also distributed in the circumferential direction in several areas between the outer shell 14 and the inner shell 54 is firmly held.
- the 1 shows in an area between the partitions 30 and 32 indicated by a broken line a recess 70 in the inner shell 54 or in 1 illustrated inner shell part 56.
- a recess 70 of this type can, for example, be engaged by a pipe in the silencer interior 22 that extends close to the outer shell 14 in order to prevent such a pipe from being guided too close to the inner shell 54 and thus during operation by a mutual Contact noises arise.
- the inner shell 54 can also be limited to a partition wall longitudinal area L, which essentially extends over the longitudinal area of the muffler housing 12 extending between the two partition walls or end partition walls 28, 32.
- the inner shell 54 may be shaped such that it at least partially covers at least one of the end walls 24, 26 and thus shields on the inside against the direct flow of exhaust gas.
- the inner shell 54 can be deformed radially inwards at a longitudinal end close to a respective end wall 24 or 26 .
- the provision of the inner shell 54 achieves thermal shielding of the outer shell 14 , in particular in areas of the muffler housing 12 that are subject to high thermal loads from the exhaust gas introduced into the muffler interior 22 .
- This thermal shielding of the outer shell 14 is tarnishing, so a thermally induced discoloration outer shell, avoided.
- This is particularly advantageous where an exhaust muffler 10 is not hidden inside a vehicle, for example under the underbody of a vehicle, but is visible from the outside as an essential part of the visual appearance of a vehicle.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Exhaust Silencers (AREA)
Claims (12)
- Silencieux d'échappement pour un système d'échappement d'un moteur à combustion interne, comprenant un boîtier de silencieux (12) avec une coque extérieure (14) entourant un intérieur de silencieux (22), à travers lequel les gaz d'échappement peuvent s'écouler, et avec une coque intérieure (54) disposée dans l'intérieur du silencieux (22) et recouvrant la coque extérieure (14) au moins dans certaines zones sur un côté intérieur (52) tourné vers l'intérieur du silencieux (22), dans lequel un espace intermédiaire (58) est formé entre la coque extérieure (14) et la coque intérieure (54), la coque intérieure (54) étant soutenue directement sur la coque extérieure (14) dans au moins une zone d'appui (60),
caractérisé en ce que la coque intérieure (54), dans ses zones d'extrémité non soutenues par une zone d'appui (60) par rapport à la coque extérieure (14), est maintenue à distance par rapport à la coque extérieure (14) par un matériau de maintien (66, 68) dans zones de maintien (62, 64). - Silencieux d'échappement selon la revendication 1, caractérisé en ce que la coque extérieure (14) comprend une paroi circonférentielle extérieure (16) allongée dans la direction d'un axe longitudinal (A) du silencieux et entourant celui-ci, et une paroi d'extrémité (24, 28) sur les deux zones d'extrémité axiales (18, 20) de la paroi circonférentielle extérieure (16) reliée à cette paroi circonférentielle extérieure, et en ce que la coque intérieure (54) comprend au moins une partie de coque intérieure (56) recouvrant la paroi circonférentielle extérieure (16) sur son côté intérieur dans au moins certaines zones au moins en association avec la paroi circonférentielle extérieure (16).
- Silencieux d'échappement selon la revendication 1, caractérisé en ce que la coque extérieure (14) comprend deux parties de coque extérieure reliées l'une à l'autre dans une zone de bord de connexion, et en ce que la coque intérieure (54) comprend une partie de coque intérieure recouvrant la partie de coque extérieure sur son côté intérieur dans au moins certaines zones en association avec au moins une partie de coque extérieure, de préférence avec chaque partie de coque extérieure.
- Silencieux d'échappement selon l'une des revendications précédentes, caractérisé en ce qu'une distance (D) entre la coque extérieure (14) et la coque intérieure (54) est comprise entre 3 mm et 7 mm, de préférence environ 5 mm dans la zone de l'espace intermédiaire (58).
- Silencieux selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu dans l'espace intérieur du silencieux (22) au moins une cloison de séparation (28, 30, 32) divisant l'espace intérieur du silencieux (22) en plusieurs chambres (34, 36, 38, 40), dans lequel au moins une cloison de séparation (28, 30, 32) est supportée par rapport à la coque extérieure (14) dans une zone de bord circonférentiel avec un placement intermédiaire de la coque intérieure (54).
- Silencieux d'échappement selon la revendication 5, caractérisé en ce que la cloison (28, 30, 32) est supportée par rapport à la coque extérieure (14) dans la zone d'une zone d'appui (60), ou/et en ce que la coque intérieure (54) est maintenue sur la coque extérieure (14) par la cloison (28, 30, 32).
- Silencieux selon la revendication 5 ou 6, caractérisé en ce que plusieurs cloisons (28, 30, 32) sont prévues dans l'espace intérieur du silencieux (22), lesquelles sont disposées les unes derrière les autres dans la direction de l'axe longitudinal (A) du silencieux, et en ce que la coque intérieure (54) est soutenue par rapport à la coque extérieure (14) dans une zone d'appui (60) respective dans la zone de plusieurs cloisons, de préférence de toutes les cloisons (28, 30, 32).
- Silencieux d'échappement selon l'une des revendications 1 à 7, caractérisé en ce que la coque extérieure (14) est recouverte par la coque intérieure (54) essentiellement sur toute son côté intérieure (52).
- Silencieux d'échappement selon l'une des revendications précédentes, caractérisé en ce que le matériau de maintien (66, 68) comprend un matériau en fil métallique.
- Silencieux d'échappement selon l'une des revendications précédentes, caractérisé en ce qu'au moins un évidement (70) est prévu dans la coque intérieure (54).
- Silencieux d'échappement selon l'une des revendications précédentes, caractérisé en ce que la coque intérieure (54) est réalisée en matériau de tôle.
- Système d'échappement pour un moteur à combustion interne, comprenant au moins un silencieux d'échappement (10) selon l'une des revendications précédentes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019132097.6A DE102019132097A1 (de) | 2019-11-27 | 2019-11-27 | Abgasschalldämpfer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3828396A1 EP3828396A1 (fr) | 2021-06-02 |
EP3828396B1 true EP3828396B1 (fr) | 2023-01-18 |
Family
ID=73005494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20203191.0A Active EP3828396B1 (fr) | 2019-11-27 | 2020-10-22 | Silencieux de gaz d'échappement |
Country Status (4)
Country | Link |
---|---|
US (1) | US11795847B2 (fr) |
EP (1) | EP3828396B1 (fr) |
CN (1) | CN112855320B (fr) |
DE (1) | DE102019132097A1 (fr) |
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US2950777A (en) * | 1956-08-01 | 1960-08-30 | Oldberg Mfg Company | Silencer or muffler |
DE1268434B (de) * | 1961-12-28 | 1968-05-16 | Friedrich Boysen | Schalldaempfer mit durch Querwaende unterteilten Innenraeumen |
US3709321A (en) | 1971-08-19 | 1973-01-09 | Tenneco Inc | Muffler with longitudinal chamber |
DE8021494U1 (de) * | 1980-08-11 | 1980-11-20 | Fichtel & Sachs Ag, 8720 Schweinfurt | Auspufftopf fuer eine zweitakt- brennkraftmaschine |
DE59100068D1 (de) * | 1990-04-30 | 1993-05-06 | Beidl Christian | Auspuffschalldaempfer, insbesondere fuer zweitakt-brennkraftmaschinen mit nachgeordnetem katalysator. |
US5220137A (en) * | 1990-11-13 | 1993-06-15 | Howerton Kenneth R | Engine exhaust muffler |
CA2072947A1 (fr) * | 1991-07-08 | 1993-01-09 | Willem Denis Maria Stuer | Methode de fabrication d'un dispositif attenuateur de bruit ou d'un convertisseur catalytique |
US5293743A (en) * | 1992-05-21 | 1994-03-15 | Arvin Industries, Inc. | Low thermal capacitance exhaust processor |
US7281606B2 (en) * | 1998-08-18 | 2007-10-16 | Marocco Gregory M | Exhaust sound and emission control systems |
EP0992659B1 (fr) * | 1998-10-05 | 2007-05-02 | Scambia Industrial Developments Aktiengesellschaft | Elément de conduit d'échappement et procédé de préparation d'un élément de conduit d'échappement |
US6408980B1 (en) | 2000-03-02 | 2002-06-25 | Mark W. Dooley | Exhaust pipe and muffler for motorcycle that does not heat discolor |
EP1146206B1 (fr) * | 2000-04-14 | 2006-08-02 | J. Eberspächer GmbH & Co. KG | Silencieux de gaz d'échappement à construction à chambres multiples |
JP4188108B2 (ja) * | 2003-03-10 | 2008-11-26 | 本田技研工業株式会社 | 内燃機関の排気消音器 |
US7273129B2 (en) * | 2003-09-05 | 2007-09-25 | Faurecia Exhaust Systems, Inc. | Muffler with internal heat shield |
JP2006151298A (ja) * | 2004-11-30 | 2006-06-15 | Honda Motor Co Ltd | 燃料電池自動車 |
US7287622B2 (en) * | 2004-12-20 | 2007-10-30 | Arctic Cat Inc. | Exhaust muffler |
JP2007040249A (ja) | 2005-08-04 | 2007-02-15 | Yamaha Motor Co Ltd | 排気ガス浄化機能を有するエンジン及び車両 |
DE102011007856A1 (de) * | 2011-04-21 | 2012-10-25 | J. Eberspächer GmbH & Co. KG | Schalldämpfer |
US8505682B2 (en) * | 2011-04-29 | 2013-08-13 | E I Du Pont De Nemours And Company | Lightweight polymeric exhaust components |
JP6153371B2 (ja) * | 2013-04-15 | 2017-06-28 | ニチアス株式会社 | マフラーカッター |
EP2846010B1 (fr) * | 2013-09-09 | 2019-06-19 | Bosal Emission Control Systems NV | Silencieux à utiliser dans le système d'échappement d'un véhicule |
DE102014217058A1 (de) * | 2014-08-27 | 2016-03-03 | Eberspächer Exhaust Technology GmbH & Co. KG | Schalldämpfer |
BR112018016652A2 (pt) * | 2016-03-17 | 2018-12-26 | Honda Motor Co., Ltd. | dispositivo de escape para motor de combustão interna |
US11319847B2 (en) * | 2018-09-19 | 2022-05-03 | Tenneco Automotive Operating Company Inc. | Exhaust device with noise suppression system |
-
2019
- 2019-11-27 DE DE102019132097.6A patent/DE102019132097A1/de active Pending
-
2020
- 2020-10-22 EP EP20203191.0A patent/EP3828396B1/fr active Active
- 2020-11-20 US US16/953,482 patent/US11795847B2/en active Active
- 2020-11-27 CN CN202011353638.5A patent/CN112855320B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
EP3828396A1 (fr) | 2021-06-02 |
US11795847B2 (en) | 2023-10-24 |
CN112855320A (zh) | 2021-05-28 |
CN112855320B (zh) | 2023-02-28 |
DE102019132097A1 (de) | 2021-05-27 |
US20210156287A1 (en) | 2021-05-27 |
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