WO2015164898A1 - Silencieux - Google Patents

Silencieux Download PDF

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Publication number
WO2015164898A1
WO2015164898A1 PCT/AT2015/050104 AT2015050104W WO2015164898A1 WO 2015164898 A1 WO2015164898 A1 WO 2015164898A1 AT 2015050104 W AT2015050104 W AT 2015050104W WO 2015164898 A1 WO2015164898 A1 WO 2015164898A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing part
muffler
beads
bead
silencer according
Prior art date
Application number
PCT/AT2015/050104
Other languages
German (de)
English (en)
Inventor
Christian Hubmann
Original Assignee
Henn Gmbh & Co Kg.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henn Gmbh & Co Kg. filed Critical Henn Gmbh & Co Kg.
Priority to EP15730042.7A priority Critical patent/EP3137752B1/fr
Publication of WO2015164898A1 publication Critical patent/WO2015164898A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/44—Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • F02M35/1261—Helmholtz resonators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • F02M35/1266—Intake silencers ; Sound modulation, transmission or amplification using resonance comprising multiple chambers or compartments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1277—Reinforcement of walls, e.g. with ribs or laminates; Walls having air gaps or additional sound damping layers

Definitions

  • the invention relates to a silencer, in particular vehicle silencer, as well as a vehicle equipped with this silencer, as indicated in claims 1 and 14.
  • a silencer is disclosed in DE 10 2008 001 390 AI.
  • the muffler includes an inner tube in which gas flows, and an outer tube surrounding the inner tube, wherein a gas layer is formed between the outer tube and the inner tube.
  • the inner tube is formed on the peripheral wall of a thin-walled material and therefore as a membrane which is caused to vibrate by the pressure differences of the medium flowing in the inner tube.
  • the inner tube By forming the inner tube as a diaphragm, the sound of the gas flowing in the inner tube can be damped.
  • the pressure fluctuations of the gas flowing in the inner tube are transferred to the gas layer arranged between the inner and outer tube, wherein the vibrations are damped by this gas layer.
  • the embodiment described in DE 10 2008 001 390 A1 has the disadvantage that the muffler is constructed of several parts with a complex geometry. As a result, the production of the muffler is error-prone and the production costs high. Furthermore, the thin-walled material of the inner tube can be damaged at high pressure fluctuations, whereby the life of the muffler will be low.
  • the present invention has for its object to provide a muffler, which is simple in construction and further has a good sound attenuation s effect.
  • a turbocharger muffler with at least one first housing part, which first housing part surrounds at least one first resonator chamber on the outside, is formed.
  • the first housing part has a, a central longitudinal axis sleeve-shaped surrounding outer jacket.
  • the outer casing of the first housing part has a surface contour in the form of indentations or elevations introduced into a cylindrical outer surface of the outer casing, the wall thickness of the outer casing being constant.
  • An advantage of the inventive design of a silencer is that an improved silencer can be created by the recesses or elevations in the outer shell, which is simple in construction and shows an excellent damping effect. Through the depressions or elevations, the sound can be broken.
  • a surprising advantage of the embodiment of the invention is that not only the sound of the gas flowing inside the muffler is attenuated, but also that the noise emission, which is caused by the muffler, is reduced. This is achieved in particular by the fact that the lateral surface of the muffler is reinforced by the depressions or elevations.
  • Another advantage is that the resonator has a low mass due to the constant wall thickness of the outer jacket.
  • the depressions or elevations in the form of deformations simply introduce into the outer shell. In contrast to designs in which contour ribs or sound insulation are applied on the inside, the design according to the invention is simple and therefore inexpensive to produce.
  • the surface contouring is formed in the form of beads introduced into the outer jacket.
  • the advantage here is that particularly beads are easy to bring in the outer shell, as they, for example, in the course of a
  • Deep drawing process can be introduced into the outer jacket.
  • a further advantage of beads is that their shape is well suited for the refraction of the sound and therefore for a sound attenuation.
  • the first housing part is integrally formed from a sheet metal forming part, such as a deep-drawn part, wherein the outer shell in its basic form, at least partially as rotationally symmetrical hollow body, in particular as a cylindrical sleeve, is formed, and wherein the beads in the hollow cylindrical section of the outer jacket are introduced.
  • a sheet metal forming part, in particular a deep-drawn part in mass production is inexpensive to manufacture.
  • a high level of resistance to rejection can be achieved, as a result of which the process reliability for producing a silencer can be increased.
  • the beads are formed as elongated, channel-shaped depressions, wherein a longitudinal axis of a bead extends parallel to the central longitudinal axis.
  • the advantage here is that such trained beads are easy to manufacture, especially in a deep-drawing process.
  • a deep-drawing tool can be used, which has a corresponding contouring.
  • the longitudinal extension of a bead which is introduced into the hollow cylindrical section of the outer shell, is between 50% and 100%, in particular between 80% and 100%, of the longitudinal extent of the hollow cylindrical section .
  • the advantage here is that a large part of the longitudinal extension of the hollow cylindrical section is provided with beads.
  • the beads, which are introduced into a hollow cylindrical portion of the outer shell are formed as circumferentially extending, surveys.
  • the advantage here is that such, extending in the circumferential direction surveys can be well made well in a transverse molding process, such as a pressing process.
  • the hollow cylindrical outer shell is pressed by means of a spinning tool to the outside.
  • the cumulative longitudinal extension of a bead which is introduced into the hollow cylindrical portion of the outer shell, between 50% and 100%, in particular between 80% and 100% of the circumference of the first section of the Outer sheath is.
  • a bead can also be segmented. Such a segmented bead can be used in a transverse They are simply inserted into the outer jacket. Furthermore, such beads can have a sound attenuation in a certain frequency range.
  • both corrugations in the form of groove-shaped depressions running parallel to the central longitudinal axis and depressions in the form of circumferential elevations in the outer jacket are formed.
  • the advantage here is that an outer sheath can be produced by such a combination of beads, which has a high rigidity. Thus, the sound emission of such a muffler can be minimized.
  • a depth of the surface contouring is between 100% and 800%, preferably between 200% and 600%, in particular between 300% and 500% of a wall thickness of the outer jacket.
  • the advantage here is that especially mufflers with surface contours and a degree of deformation in this value range have a good sound attenuation.
  • such silencers have a low noise emission.
  • Another advantage of such a formed surface contouring is that it is easy to manufacture in a manufacturing process for mass production.
  • a width of a bead is between 300% and 1500%, preferably between 400% and 1000%, in particular between 400% and 700% of a depth of a bead.
  • the advantage here is that especially mufflers with surface contours and a degree of deformation in this range have a good sound attenuation. In addition, such silencers have a low noise emission.
  • Another advantage of such a formed surface contouring is that it is easy to manufacture in a manufacturing process for mass production.
  • the muffler comprises two housing parts with a surface contouring according to one of the preceding claims and a Resonatorinnenelement, wherein two resonator chambers are formed, which are each bounded by the Resonatorinnenelement and a housing part.
  • the advantage here is that such a silencer has particularly good damping properties.
  • the surface contouring is designed as a receptacle and the resonator inner element has a counterpart corresponding to the surface contouring, the resonator inner element being held in at least one of the housing parts by means of the surface contouring.
  • the advantage here is that the Resonatorinnenelement no further holding sections needed to be placed in the resonator.
  • the surface contouring is arched outwards and forms a groove on the inside of the housing parts and that the counterpart of the Resonatorinneniatas is formed as a projection and is clamped in the groove.
  • the resonator inner element made of a plastic material
  • the width of the projection can be kept as low as possible.
  • Fig. 1 shows a first embodiment of a muffler in a perspective
  • Fig. 2 is a schematic representation of a motor vehicle with a muffler according to Fig. 1;
  • FIG 3 is a perspective view of a first embodiment of a first housing part of a muffler.
  • FIG. 4 shows a side view of a first exemplary embodiment of a first housing part of a silencer according to FIG. 3; a sectional view of a first embodiment of a first housing part of a muffler according to the section line VV in Fig. 4;
  • FIG. 6 is a perspective view of a second embodiment of a first housing part of a muffler.
  • FIG. 7 shows a side view of a second exemplary embodiment of a first housing part of a silencer according to FIG. 6; 8 is a sectional view of a first exemplary embodiment of a second housing part of a silencer according to the section line VIII-VIII in FIG. 7;
  • FIG. 9 is a perspective view of a third embodiment of a first housing part of a muffler.
  • FIG. 10 is a perspective view of another embodiment of a partially cut silencer shown
  • FIG. 11 shows a cross section of the further exemplary embodiment of the silencer according to FIG.
  • Fig. 12 is a cross section of another embodiment of the muffler.
  • Fig. 1 shows a first embodiment of a muffler 1, in particular a vehicle muffler.
  • Fig. 1 shows an isometric view of the muffler 1, wherein the muffler 1 is shown in a quarter section.
  • the muffler 1 shown in Fig.l comprises a first housing part 2.
  • the muffler 1 includes a second housing part 3 or other housing parts.
  • the housing parts 2, 3 can be connected to one another in a connection region 4.
  • the connection between the housing parts 2, 3 can preferably be realized by a cohesive connection, in particular a welded connection, such as a laser welding connection.
  • the muffler 1 is formed in a preferred embodiment as a rotationally symmetrical hollow body and has a central longitudinal axis 5. Furthermore, it is also conceivable that the muffler 1 has approximately a rectangular or a polygonal cross section.
  • the muffler 1 comprises a first housing part 2, a second housing part 3 and a resonator inner element 6.
  • the resonator inner element 6 can be accommodated between the first housing part 2 and the second housing part 3.
  • a first resonator chamber 7 and a second resonator chamber 8 are formed by the illustrated arrangement of the first housing part 2, second housing part 3 and resonator inner element 6.
  • the first resonator chamber 7 can be bounded on the outside by the first housing part 2 and on the inside by the resonator inner element 6.
  • the second resonator chamber 8 can be bounded on the outside by the second housing part 3 and on the inside by the resonator inner element 6.
  • the resonator inner element 6 and the first housing part 2 and the second housing part 3 are formed in an advantageous embodiment of deep-drawn parts.
  • the individual parts may be shaped so that the resonator inner element 6 in the first housing part 2 and / or in the second Housing part 3 can be accommodated and that the muffler 1 only in the connection region 4 has a material connection, to which the first housing part 2 and the second housing part 3 are interconnected.
  • the first housing part 2 has an inflow opening 9 and integrated therein an axially tapered step 10 formed in the axial section.
  • Such a stepped tapered neck 10 may be provided for receiving a coupling element.
  • a coupling element is received in the stepped tapered neck 10, which serves to connect the muffler 1 to a turbocharger 11.
  • the second housing part 3 has an outflow opening 12.
  • a connecting piece 13 may be arranged, which serves for the connection of a pressure hose.
  • the muffler 1 optionally has only one resonator chamber 7 or additional resonator chambers. Accordingly, the muffler 1 can be constructed of different numbers of individual parts. According to the invention, a surface contouring 15 is provided in at least one housing part 2 and / or 3, or else in a further housing part, not shown, in the outer jacket 14, by which the damping behavior of the muffler 1 is improved. Different design options of the surface contouring 15 will be described in more detail later, or shown.
  • the first housing part 2, the second housing part 3 and the resonator inner element 6 are deep-drawn so that they receive their characteristic shape.
  • the surface contouring 15 is introduced into a housing part 2 and / or 3 during the deep-drawing process.
  • a thermoforming tool must accordingly be designed in order to be able to integrate the surface contouring 15 into the housing part 2 and / or 3.
  • the surface contouring 15 is introduced into one of the housing parts 2 and / or 3 after the deep-drawing process, for example in a further production step.
  • Another method step for producing a muffler 1 shown in Fig. 1 comprises the assembly of the individual components of the muffler. 1
  • either the first housing part 2 or the second housing part 3 can be used as a base, with the remaining components being placed and assembled on the base.
  • the exemplary assembly will be described on the assumption that the first housing part 2 constitutes the base member for assembly.
  • the first housing part 2 can be used in a mounting device to be held there. Furthermore, it is also conceivable that the first housing part 2 is held by a manipulator, for example a robot.
  • the resonator inner element 6 can be inserted into a first receiving portion 16 of the first housing part 2.
  • a centering lug 17 of the resonator inner element 6 is received in the first receiving section 16.
  • the second housing part 3 is plugged onto the resonator inner element 6 protruding from the first housing part 2. Because the resonator inner element 6 is already connected to the first housing part 2, the second housing part 3 is thus also positioned relative to the first housing part 2.
  • the centering projection 17 of the resonator inner element 6 cooperates with a second receiving portion 18 of the second housing part 3.
  • the centering lug 17 serves to be able to position and center the second housing part 3 relative to the first housing part 2.
  • the first receiving portion 16 is positioned to the second receiving portion 18.
  • the two housing parts 2, 3 are pushed against one another or pressed against one another until they contact one another in the region of the first receiving section 16 and in the region of the second receiving section 18.
  • the axial extension of the centering projection 17, the axial extent of the second receiving portion 18, and the axial extent of the first receiving portion 16 are selected such that in the assembled state the resonator inner element 6 is received in a fixed position between the first housing part 2 and the second housing part 3.
  • the first housing part 2 can now be welded to the second housing part 3.
  • the abutting receiving sections 16, 18 are welded here.
  • a welding method for an industrial manufacturing process in particular a mass production, a laser or a plasma welding process is advantageously used here.
  • any other welding method is used, which is adapted to connect the two housing parts 2, 3 cohesively with each other.
  • FIG. 2 shows a vehicle 19, in particular a road-bound vehicle with internal combustion engine, which is equipped with a silencer 1 according to the invention.
  • the muffler 1 is arranged on the pressure side of the turbocharger 11.
  • the muffler 1 is arranged elsewhere in the intake manifold of the internal combustion engine.
  • FIGS. 3 to 8 show various exemplary embodiments of a first housing part 2 with different possibilities for the design of the surface contouring 15 according to the invention.
  • FIGS. 3 to 5 show a first exemplary embodiment of a housing part 2 according to the invention, the same reference numerals and component designations being used for the same parts as in the preceding FIG. 1. To avoid unnecessary repetitions Reference is made to the detailed description in the preceding Fig. 1 or reference.
  • Fig. 3 the housing part 2 according to the invention is shown in a perspective view. It can be seen here that the surface contouring 15 is introduced into the outer casing 14. In particular, it is provided that the surface contouring 15 is introduced into a cylindrical jacket surface 20 of the outer jacket 14, the cylindrical jacket surface 20 also having a constant and constant wall thickness 21 in the area of the surface contouring 15.
  • the surface contouring 15, as can be seen in FIG. 3, is designed in the form of beads 22.
  • the first housing part 2 is preferably formed in one piece from a sheet metal forming part, such as a deep-drawn part.
  • the outer jacket 14 of the housing part 2 is in this case formed as a rotationally symmetrical hollow body.
  • the outer casing 14 is at least partially formed as a cylindrical sleeve, resulting in a hollow cylindrical portion 23 of the outer shell 14 results.
  • the beads 22 are introduced into the hollow cylindrical section 23 of the outer jacket 14. As shown in FIG.
  • the beads 22 are introduced in this embodiment, the extent in the cylindrical surface 20, that the beads 22 are formed as elongated, channel-shaped recesses, wherein a longitudinal axis 24 of a bead 22 parallel to the central longitudinal axis 5.
  • Such formed beads 22 can be well introduced during the manufacture of the housing part 2 by means of a deep-drawing process in the hollow cylindrical portion 23.
  • the longitudinal extent 25 of a bead 22 is between 50% and 100%, in particular between 80% and 100%, of the longitudinal extent 26 of the hollow cylindrical section 23.
  • a bead 22 due to manufacturing an initial region 27 and an end portion 28.
  • the starting region 27 of a bead 22 is that region of the bead 22 which is arranged on a transitional rounding 29 between an end wall 30 and the hollow cylindrical section 23.
  • the characteristic appearance of this initial region 27 depends on how large the radius the transition curve 29 is chosen.
  • beads 22 formed in this way to be introduced into the hollow-cylindrical section 23 by means of a spinning tool. It is also conceivable that a bead 22 extends only over a certain portion of the hollow cylindrical portion 23.
  • the end portion 28 of a bead 22 always forms a transition of the bead 22 to the cylindrical lateral surface 20th
  • an indentation depth or depth 31 of the surface contouring 15 or bead 22 is between 100% and 800%, preferably between 200% and 600%, in particular between 300% and 500%, of a wall thickness 21 of the outer jacket 14 may be.
  • the depth 31 of a bead 22 is significantly responsible for the insulating behavior of a muffler 1. Since the beads 22 of the cylindrical lateral surface 20 impart a certain rigidity, the sound behavior of the muffler 1 can also be positively influenced by the configuration of the beads 22. The reduction of the sound intensity of such a silencer 1 results from the fact that the shaping of the surface contouring 15 the Rigidity of the first housing part 2 is increased.
  • a further embodiment feature of the surface contouring 15 or the bead 22 is, in addition to the depth 31, a width 32.
  • the width 32 of a bead 22 is between 300% and 1500%, preferably between 400% and 1000%, in particular between 400% and 700%.
  • the depth 31 of the bead 22 is crucial for the design of the transition radii between bead 22 and cylindrical surface 20. If a bead 22 has a large indentation depth 31 compared to its width 32, it is necessary in that the transitions between the bead 22 and the cylindrical outer surface 20 have a small radius.
  • a bead 22 has only a small indentation depth 31 compared to the width 32, then the bead 22 can have large transition radii.
  • the bead 22 can have large transition radii.
  • the exemplary embodiment shown in FIGS. 3 to 5 as can be seen in FIG. 5, eight beads are distributed over the circumference of the cylindrical jacket surface 20. This results in a pitch angle of 45 ° in which the beads 22 are arranged on the cylindrical circumferential surface 20.
  • the number or arrangement of the beads 22 is not limited to this embodiment.
  • an outer circumferential surface 34 has the constant offset to an inner circumferential surface 35, as a result of which the constant wall thickness 21 can also be seen.
  • FIGS. 6 to 8 show a further embodiment of a first housing part 2 of the muffler 1, which is possibly independent of itself, wherein the same reference numerals or component designations are again used for the same parts as in the preceding FIGS. 1 to 5.
  • the beads 22 are not introduced in this embodiment in the direction of the longitudinal axis 5, but extend in the peripheral direction 36 of the cylindrical surface 20.
  • Such a trained bead 22 has a certain angular extent 37th in the circumferential direction 36.
  • a bead 22 formed in this way is not formed by a single groove running continuously in the circumferential direction 36, but that the bead 22 is segmented in the circumferential direction 36.
  • the angular extent 37 in the circumferential direction 36 in this case the angular extent 37 of a single segment of a bead 22 is considered.
  • a cumulative angular extent 37 is that angular range or angular segment which results from the summation of the angular extent 37 of the individual beads 22 in the circumferential direction 36. It can be advantageous in this case if the cumulative angular extent 37 of a bead 22 in the hollow cylindrical section 23 of the outer shell 14 is between 50% and 100%, in particular between 80% and 100% of a full circle in the region of the hollow cylindrical section 23.
  • beads 22 are arranged on the cylindrical lateral surface 20.
  • Such beads are preferably produced by means of a spinning tool. In this case, the corresponding tool presses against the inner circumferential surface 35 of the outer shell 14, so that the beads 22 are pressed to the outside.
  • the beads 22 are formed by a transverse machining tool.
  • a spacing 38 of the bead rings 22 relative to one another in the direction of the longitudinal axis 5 is preferably selected to be so large that a partial section of the undeformed cylindrical jacket surface 20 is maintained between the two bead rows.
  • FIG. 9 shows a further embodiment of a first housing part 2 of the muffler 1, which is possibly independent of itself, wherein the same reference numerals or component designations are again used for the same parts as in the preceding FIGS. 1 to 8.
  • the same reference numerals or component designations are again used for the same parts as in the preceding FIGS. 1 to 8.
  • Such a combination of beads 22 may have the advantage that the damping effect of a muffler 1 is improved to an increased extent, since the outer jacket 14 is significantly stiffened.
  • the surface contouring 15 is designed according to embodiments not shown.
  • similar lent, as in the embodiment of FIG. 6, in the circumferential direction 36 extending beads 22 are introduced into the outer casing 14, wherein these are formed as circumferential grooves.
  • Such beads can be produced for example by a rolling process.
  • a surface contour 15 to be produced in the form of punctiform elevations or depressions. Such elevations or depressions may have, for example, a round or polygonal base surface.
  • Fig. 10 shows the muffler 1 in a perspective view with a partial sectional view
  • Fig. 11 shows a cross section of the muffler 1 according to the section line XI XI of Fig. 10 shows.
  • the surface contouring 15 simultaneously serves as a fastening element 39 and the resonator inner element 6 has a corresponding counterpart 40 which corresponds to the fastening element 39.
  • the resonator inner element 6 can thereby be accommodated in a form-fitting manner in the two housing parts 2, 3 and thus secured or fixed in its position.
  • the surface contouring 15, which serves as fastening element 39 in this case, is arched outwardly and forms a groove 42, in particular a receiving groove, on the inside 41 of the housing parts 2, 3 .
  • the counterpart 40 of the Resonatorinneniatas 6 may be formed as a projection 43 or as a receiving nose.
  • the counterpart 40 may be dimensioned such that it is clamped or received in the groove 42.
  • the Resonatorinnenelement 6 is formed of a plastic material and therefore the counterpart 40 has a first coefficient of thermal expansion with a first thermal expansion and that the groove 42 which is inserted in the metallic housing part, having a second coefficient of thermal expansion with a second thermal expansion.
  • the width of the groove 42 and the counterpart 40 is kept as low as possible.
  • the width of the groove 42 and the counterpart 40 between 1 mm and 5 mm, preferably between 2 mm and 4 mm, are selected.
  • the resonator inner element 6 or the housing parts 2, 3 have a flat 44 and therefore do not form a rotation-symmetrical shape in certain regions.
  • FIG. 12 shows a further embodiment of a muffler 1, which is possibly independent of itself, again using the same reference numerals or component designations for the same parts as in the preceding FIGS. 1 to 11.
  • FIG. 12 shows a further embodiment of a muffler 1, which is possibly independent of itself, again using the same reference numerals or component designations for the same parts as in the preceding FIGS. 1 to 11.
  • reference numerals or component designations for the same parts as in the preceding FIGS. 1 to 11.
  • FIG. 12 likewise shows a cross section of the muffler 1 according to the section line XI-XI according to FIG. 10.
  • Resonatorinnenelement 34 outer circumferential surface
  • first resonator chamber 35 inner circumferential surface

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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)

Abstract

L'invention concerne un silencieux (1), en particulier un silencieux de turbocompresseur, comprenant au moins une première partie de boîtier (2). La première partie de boîtier (2) entoure extérieurement au moins une première chambre de résonance (7) et elle comporte une enveloppe extérieure (14) qui entoure à la manière d'une gaine un axe longitudinal (5) central. L'enveloppe extérieure (14) de la première partie de boîtier (2) possède un profil de surface (15) sous la forme de creux ou de saillies réalisés dans une surface extérieure cylindrique (20) de l'enveloppe extérieure (14). L'épaisseur de paroi (21) de l'enveloppe extérieure (14) dans une zone profilée de l'enveloppe extérieure (14) est sensiblement égale à l'épaisseur de paroi (21) dans une zone non profilée.
PCT/AT2015/050104 2014-04-30 2015-04-28 Silencieux WO2015164898A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15730042.7A EP3137752B1 (fr) 2014-04-30 2015-04-28 Silencieux

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT503112014 2014-04-30
ATA50311/2014 2014-04-30

Publications (1)

Publication Number Publication Date
WO2015164898A1 true WO2015164898A1 (fr) 2015-11-05

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PCT/AT2015/050104 WO2015164898A1 (fr) 2014-04-30 2015-04-28 Silencieux

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WO (1) WO2015164898A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11236860A (ja) * 1998-02-23 1999-08-31 Calsonic Corp ターボ付エンジン搭載車両の吸気サイレンサー
EP1369577A1 (fr) * 2002-06-07 2003-12-10 Trelleborg Fluid Systems Geie Dispositif d'atténuation des bruits sur un circuit d'admission d'air pour moteur de préférence suralimenté ou appareil de climatisation et circuit d'admission équipé d'un tel dispositif
EP1375848A1 (fr) * 2002-06-18 2004-01-02 Benteler Automobiltechnik GmbH Dispositif permettant de réduire les émissions sonores et méthode pour la réalisation d'un tel dispositif
DE102008001390A1 (de) 2007-04-27 2008-10-30 Denso Corp., Kariya-shi Schalldämpfer
EP2067979A1 (fr) * 2007-12-05 2009-06-10 Hutchinson Dispositif d'atténuation acoustique pour ligne d'admission d'un moteur thermique, et ligne d'admission l'incorporant

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19956172C5 (de) * 1999-11-23 2010-09-23 Umfotec Gmbh Doppelkammerdämpfer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11236860A (ja) * 1998-02-23 1999-08-31 Calsonic Corp ターボ付エンジン搭載車両の吸気サイレンサー
EP1369577A1 (fr) * 2002-06-07 2003-12-10 Trelleborg Fluid Systems Geie Dispositif d'atténuation des bruits sur un circuit d'admission d'air pour moteur de préférence suralimenté ou appareil de climatisation et circuit d'admission équipé d'un tel dispositif
EP1375848A1 (fr) * 2002-06-18 2004-01-02 Benteler Automobiltechnik GmbH Dispositif permettant de réduire les émissions sonores et méthode pour la réalisation d'un tel dispositif
DE102008001390A1 (de) 2007-04-27 2008-10-30 Denso Corp., Kariya-shi Schalldämpfer
EP2067979A1 (fr) * 2007-12-05 2009-06-10 Hutchinson Dispositif d'atténuation acoustique pour ligne d'admission d'un moteur thermique, et ligne d'admission l'incorporant

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