EP2757234B1 - Silencieux et son procédé de fabrication - Google Patents

Silencieux et son procédé de fabrication Download PDF

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Publication number
EP2757234B1
EP2757234B1 EP14151358.0A EP14151358A EP2757234B1 EP 2757234 B1 EP2757234 B1 EP 2757234B1 EP 14151358 A EP14151358 A EP 14151358A EP 2757234 B1 EP2757234 B1 EP 2757234B1
Authority
EP
European Patent Office
Prior art keywords
shell
shell segments
pipe section
silencer
segments
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP14151358.0A
Other languages
German (de)
English (en)
Other versions
EP2757234A1 (fr
Inventor
Harald Hartmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henn GmbH and Co KG
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Henn GmbH and 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 and Co KG filed Critical Henn GmbH and Co KG
Publication of EP2757234A1 publication Critical patent/EP2757234A1/fr
Application granted granted Critical
Publication of EP2757234B1 publication Critical patent/EP2757234B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F02M35/1283—Manufacturing or assembly; Connectors; Fixations
    • 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
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1034—Manufacturing and assembling intake systems
    • F02M35/10354—Joining multiple sections together
    • F02M35/1036—Joining multiple sections together by welding, bonding or the like
    • 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
    • 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
    • F01N1/026—Annular resonance chambers arranged concentrically to an exhaust passage and communicating with it, e.g. via at least one opening in the exhaust passage
    • 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
    • F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49398—Muffler, manifold or exhaust pipe making

Definitions

  • the invention relates to a silencer, in particular vehicle silencer, having an inner tube section and at least one resonator chamber formed outside the tube section, the tube section having in its jacket at least one opening which connects the interior of the tube section with the resonator chamber.
  • the invention also relates to a vehicle with a silencer and a method for producing a silencer.
  • the JPS5087315U discloses a construction in the manner of a muffler with an inner pipe section surrounded by chambers.
  • the inner pipe section has openings in its jacket, which connect the interior of the pipe section with the chambers.
  • the inner tube section is composed of two adjacently arranged sheath segments.
  • the DE 10026355 A1 discloses a sound-absorbing air duct for an air intake tract of an internal combustion engine with an inner tube having radial openings, and an insulating sheath, which at least partially surrounds the inner tube radially outward.
  • An outer tube completely encloses the inner tube and the insulating jacket.
  • Both the outer tube and the inner tube each consist of two half-shells, wherein a half-shell of the inner tube is pivotally mounted on a half-shell of the outer tube and the other half-shell of the inner tube is pivotally mounted on the other half-shell of the outer tube.
  • Inner tube, outer tube and insulation sheath are made of plastic.
  • the disadvantage of this construction is that the production of such an air duct requires enormous effort.
  • the mutual pivotal mounting of the individual half-shells requires several complex operations and can be realized in a reasonable cost only with plastic materials. This eliminates this solution in all applications where the use of metal, such as stainless steel, is required.
  • the WO 07101412 A1 discloses a silencer in modular design and its manufacture.
  • a plurality of fluid guide elements is provided, which form a labyrinth of passages and resonator chambers.
  • a continuous pipe is not provided, construction and construction are very complex and require a variety of items whose composition is extremely complex.
  • a silencer with an inner tube and outside arranged reflection chambers and channels is from the DE 3020492 C2 known.
  • the DE 736633 A discloses a muffler in which the inside pipe is not formed continuously.
  • the medium passes through two chambers and annular spaces between two pipe sections. Radial openings connect the chambers to the annuli.
  • the last two documents have as inner tube sections a tube which is formed along its circumference in one piece.
  • the disadvantage of such a construction is that commercially available tubes of a certain diameter have a minimum thickness of their shell. In order to achieve a lower shell thickness and thus a material and weight savings would require special constructions, which are very expensive and expensive.
  • the introduction of radial openings in a finished tube is associated with considerable effort, since openings must be introduced mostly along the entire circumference of the tube, so that even the handling and orientation of the tube during processing requires considerable effort.
  • the aim of the present invention is to provide a silencer which does not have this disadvantage and which is simple and inexpensive to produce. With such a silencer, a material and weight saving should be possible. The assembly of the muffler and in particular the production of the inner pipe section with the openings in his coat should be uncomplicated and time-saving. Finally, the silencer should be characterized by an efficient sound insulation.
  • the shell of the inner pipe section from at least three, distributed along the pipe circumference (adjacently arranged) shell segments is composed, each extending in the axial direction from a first connector to a second connector, wherein first ends of the sheath segments are connected to the first connector and second, the first ends opposite ends of the sheath segments are connected to the second connector.
  • the production and assembly of at least three shell segments to an inner pipe section have proven to be particularly simple.
  • the shell segments can be made individually and independently of each other and then assembled into an inner tube section. Since the segments are made individually, They can be cut out of a thin sheet and then bent into the right shape.
  • the jacket of the inner pipe section can be designed with a smaller wall thickness, as is possible with pipes of the prior art.
  • the resulting material savings makes the muffler lighter in weight and cost.
  • the production of radial openings in the shell is facilitated by the fact that they are already introduced in the production of the individual shell segments.
  • the assembly of the individual shell segments to the inner pipe section is not a difficulty.
  • the shell segments are prefabricated independently of other parts of the muffler, in particular independently of the resonator walls surrounding the resonator chamber (s) on the outside. This prefabrication of the sheath segments allows an optimization of the manufacturing process.
  • the shell segments each extend continuously from the first connector to the second connector, so that the inner tube section is continuous.
  • the inner tube section serves to convey a medium, e.g. Compressed air of the turbocharger, (and is therefore a flow channel), while the resonator chambers (for example Helmholtz resonators) serve the reduction of sound by negative interference.
  • Each of the shell segments covers a circle segment in cross section normal to the axis of the pipe section.
  • the required degree of bending of an initially flat piece of sheet metal in three or more shell segments remains relatively low and can be done with simple means, a bending tool, with high accuracy and reproducibility.
  • the shell segments are manufactured individually and reach only by their positioning and attachment to the fittings in a relatively fixed position.
  • the shell segments are preferably connected to one another only via the connecting pieces, wherein in this embodiment a direct mechanical connection between the shell segments is not provided.
  • connection is widely seen and may include pipes, fittings and pieces of hose.
  • the connecting piece the medium conducted in the inner pipe section is conveyed further; the word part 'connection' refers to the fact that the sheath segments are connected to the connector.
  • the connecting pieces are preferably in each case arranged predominantly or entirely outside the resonator chambers, one connecting piece forming the inlet and the other connecting piece forming the outlet of the silencer.
  • the shell segments are continuous, i. the inner tube section is not interrupted.
  • For communication between the flow channel (inner pipe section) and the / the resonator (s) (n) provide the recesses in the shell segments.
  • the shell of the inner tube section is composed of exactly three shell segments which extend along the circumference of the tube in each case by substantially 120 °, i. in the case of a circular pipe section, each shell segment covers one third of the circular shape.
  • a bend of sheet metal pieces to this extent can be done without much effort and with high accuracy.
  • all shell segments have the same shape, which further simplifies the manufacturing process.
  • the jacket segments are preferably formed from individual, pre-bent sheet metal pieces, preferably stainless steel sheet pieces, whereby high quality silencers are formed.
  • the first and / or the second ends of the shell segments are welded to the first and / or second connector, whereby a reliable and easy to make connection takes place.
  • the first and / or the second ends of the shell segments are positively connected to the first and / or second connection piece. This can be done for example by means of clamping or pressing connections or clamps.
  • the first and / or the second ends of the shell segments each have at least one flange-shaped portion.
  • This flange-shaped portion is preferably on the front side of the connector and facilitates the positioning and attachment of the corresponding end of the connector.
  • the first and / or the second ends of the shell segments each have at least one apron-shaped portion, wherein the skirt-shaped portion rests against a connecting piece.
  • a skirt-shaped section also facilitates positioning and improves firm connection with the fitting.
  • the attachment can be made particularly simple
  • At least one connecting piece is a pipe, a pipe piece, a hose or a hose piece, whereby the shell damper can be coupled with the connecting lines in the best possible way.
  • the axially extending edges of adjacent shell segments are loosely adjacent to each other. It is therefore not necessary here to connect the shell segments along the axially extending edges. Since the resonator chamber walls seal the muffler and thus also the inner pipe section to the outside, a complete tightness of the inner tube and thus along the axially extending edges is not necessary, especially since openings are also provided in the direction of resonator.
  • the axially extending edges of all shell segments are loosely abutted, i. these edges are not directly connected. This does not exclude that they preferably touch along their entire length.
  • Another advantage of this embodiment results from the fact that the three sheath segments or shells can lie loosely along each other longitudinally, ie the axially extending longitudinal sides or edges of adjacent sheath segments need not be connected to one another.
  • the loose abutment can be used for tolerance compensation for the fittings. If the connection diameters are not exactly correct, the gaps between the segments are simply varied for tolerance compensation. In a preferred embodiment, therefore, results in at least between two adjacent sheath segments extending in the axial direction gap.
  • axially extending gaps are formed between all longitudinal sides.
  • a partition that separates two resonator chambers from each other may be formed as an annular wall portion through which the inner pipe section passes.
  • this partition lies with its inner edge on the shell segments, whereby they are additionally held or supported.
  • a firm connection between partition and shell segments is not absolutely necessary.
  • the partition is loosely against the shell segments; the latter are held by the fittings anyway. With its outer edge, the partition wall abuts against the outwardly sealing resonator chamber wall. This provides a mechanically stable construction.
  • the cross section of the shroud segments is arcuate, preferably arcuate, normal to the axial direction, thereby resulting in a space-saving and optimized in terms of sound insulation geometry.
  • the production of the inner tube section by the same shaped shell segments is possible.
  • each shell segment at least one, preferably at least two recesses, which form the openings in the shell of the inner pipe section.
  • the recesses may be in the individual shell segment all-round openings or be an open towards an axially extending edge of the shell segment recess, which are only after the assembly of the individual shell segments to an inner pipe section to all sides enclosed openings.
  • the shell segments forming the inner pipe section have the same size and the same shape, wherein preferably the shape, arrangement and size of the recesses in all shell segments are the same. This results in a uniform shape for all shell segments, so that the manufacturing process is greatly simplified.
  • the at least one resonator chamber surrounds the inner tube section along its entire circumference, thereby creating a space-saving and optimized in terms of sound insulation geometry.
  • the muffler has at least two resonator chambers, which are arranged one behind the other in the axial direction, the mantle of the inner tube section being first Openings, which open into the first resonator and second openings, which open into the second resonator.
  • This solution is particularly efficient in soundproofing.
  • the inner tube section is completely surrounded by resonator chamber walls.
  • leakage is achieved to the outside through the resonator chamber walls, so that no perfect tightness of the inner pipe section is required.
  • the muffler is a turbocharger muffler, which is arranged on the pressure side of a turbocharger.
  • the turbocharger silencer serves to reduce noise emissions on the pressure side of the turbocharger.
  • the muffler can be plugged onto a short pressure hose directly at the outlet of the turbocharger and e.g. be secured with a spring band clamp.
  • a vehicle in particular road-bound vehicle, having a muffler, in particular a turbocharger muffler, which is formed according to one of the embodiments described above.
  • a silencer in particular a vehicle silencer, having an inner tube section and at least one resonator chamber formed outside the tube section, the tube section having in its jacket at least one opening which encloses the interior of the tube section with the resonator chamber connects, reaches.
  • the individual shell segments are completely prefabricated and assembled the prefabricated shell segments during assembly of the muffler to the inner tube section
  • the shell segments are prefabricated as individual parts and that is formed by assembling the prefabricated shell segments of the shell of the inner tube section, wherein the shell segments are distributed along the pipe circumference and each extend in the axial direction from a first connector to a second connector and that first ends of the sheath segments are connected to the first connector and second ends of the sheath segments opposite the first ends are connected to the second connector.
  • the prefabricated shroud segments connected as loose individual parts are brought into a fixed position with each other only during assembly to the inner tube section.
  • the manufacturing process is divided into two steps.
  • the shell segments are individually prefabricated.
  • the prefabricated shell segments only need to be assembled. These. Allows manufacturing of shroud segments with high accuracy, during the assembly no difficulties, because tolerances in the shroud segments can be kept low.
  • the shroud segments are attached with their ends to the respective fittings. Preferably, there is no direct bond between the adjacent shell segments via their axially extending edges. This reduces the mounting on the attachment to the opposing fittings.
  • the sheath of the inner tube section is composed of at least three sheath segments, preferably of exactly three sheath segments which extend along the circumference of the tube in each case by substantially 120 °.
  • the bending angle or segment angle is not too large to be produced reproducibly and with low tolerances.
  • a manufacturing process bending or segment angle is easily manageable, production of equally shaped shell segments as individual parts
  • assembly with three shell segments just a few parts to assemble
  • the shell segments are each made by a bending operation of a piece of sheet metal, preferably a piece of stainless steel sheet, the shell segments are brought by the bending process in a form with arcuate, preferably circular cross-section.
  • a piece of sheet metal preferably a piece of stainless steel sheet
  • the shell segments are brought by the bending process in a form with arcuate, preferably circular cross-section.
  • very thin sheets can be used, for example, with a thickness of less than 1mm, which material, weight and cost savings can be achieved.
  • the bending of the sheet metal piece in a mold to form a coat with one or more other shell segments presents no problems Bending angle or segment angle is relatively small for three jacket pieces, preferably of the same size and shape, so that the observance of tolerance limits during the bending process causes no problems.
  • An embodiment with exactly three shell segments, each covering an arc of 120 °, is also preferred here.
  • the sheet metal pieces are cut before the bending process from a substantially flat sheet into the size of the shell segments.
  • the shell segments are each made by cutting a piece of sheet metal from a substantially flat sheet and then bending the sheet piece into a shape in which it has an arcuate, preferably circular arc-shaped cross-section. Cutting from a flat sheet, e.g. by means of a laser, can be done with high accuracy.
  • the segments are made directly from a sheet metal strip.
  • the sheet metal strip or strip is then prepared in the appropriate width, so that laterally no more processing is necessary and no waste / waste.
  • the width of the sheet metal strip already corresponds to the width of the jacket segment to be prefabricated. This allows a production 'on tape'.
  • At least one flange-shaped portion is formed at each of the first ends and / or second ends of the shroud segments before the shroud segments are assembled to the inner tube portion, thereby facilitating subsequent positioning and attachment to the fitting.
  • At least one apron-shaped portion is preferably formed at the first ends and / or second ends of the shell segments before the shell segments are assembled to form the inner pipe section, thereby facilitating subsequent positioning and attachment to the fitting.
  • recesses are introduced into the piece of sheet metal prior to bending of the piece of sheet metal, which openings in the shell of the inner pipe section form in the assembled state of the shell segments, wherein preferably the introduction of the recesses is carried out by laser processing. In the un-bent state of the piece of sheet metal and the recesses can be very accurately introduced.
  • the first ends and / or the second ends of the shell segments are welded to the first and / or second connector.
  • the first ends and / or the second ends of the shell segments are positively connected to the first and / or second connection piece.
  • Fig. 1 shows a silencer 1 according to the invention with an inner tube section 2, which is surrounded by two, in the axial direction one behind the other arranged Resonatorhuntn 14,15.
  • first openings 7 and second openings 8 are formed in the jacket 3 of the inner pipe section 2 .
  • the first openings 7 are spaced apart from the second openings 8 in the axial direction.
  • the first openings 7 lead into the first resonator chamber 14 and the second openings 8 lead into the second resonator chamber 15.
  • the resonator chambers 14, 15 surround the tube section 2 along its entire circumference in the form of an annular volume.
  • the two resonator chambers 14, 15 are separated from each other by an annular partition wall.
  • Resonator chamber walls 16 seal the silencer 1 to the outside.
  • the position of the partition wall in the housing part determines the volume of the resonator chambers.
  • the partition can be as separate Part, for example, be used with a flared outer and / or inner edge at the desired location in the housing part formed by the resonator chamber wall 16 and connected thereto, for example, be welded. Of course, it is conceivable that the partition is also firmly connected to the shell segments 4, 5, 6, for example, welded.
  • the inner tube section 2 continues at its two ends in connecting pieces 11, 12.
  • the jacket 3 composed of individual shell segments 4, 5, 6. Adjacent shell segments lie with their axially extending edges 13 to each other loosely.
  • Fig. 2 shows the inner pipe section 2 in detail.
  • the connecting pieces 11, 12 compared to Fig. 2 have different shape. Basically, all possible forms are conceivable; the connecting pieces 11, 12 may be formed as a piece of pipe, as a pressure hose or hose piece.
  • the pipe section 2 consists of individual shell segments 4, 5, 6 which have recesses 17, 18. These form in the assembled state, the openings 7, 8 of the shell 3.
  • the individual shell segments each extend over a third of the pipe circumference. They are the same in terms of shape, size and recesses.
  • the shell segments each have two flange-shaped sections 21 with axially projecting apron-shaped sections 22. Sections 21, 22 serve to position and secure the shell segments to the face of the second connector 12.
  • the attachment may be e.g. done by welding or by a non-positive connection.
  • At the first ends 9 of the shell segments no special shape is provided. The first ends 9 are e.g. inserted in an annular gap or recess of the first connector 11 and there, for example. secured by welding.
  • the advantage of the construction of the inner pipe section 2 is that the shell segments individually, ie independently of other parts of the resulting muffler, prefabricated and then assembled in the manner of a modular system to the pipe section 2 can be.
  • the individual sheath segments are thus initially available as prefabricated items that are loose, that is connected to each other in any way. Only when assembling the inner pipe section, the shell segments are joined together and brought a fixed position to each other.
  • Fig. 3 to 5 outline in steps a possible manufacturing process for a silencer.
  • Fig. 3 be cut in a first step sheet metal pieces 19 in the size of the future shell segments from a flat sheet 20.
  • These steps are preferably carried out by laser cutting.
  • a sheet metal piece 19 is subjected to a bending process.
  • a bending tool for example an arrangement of rollers or rollers positioned relative to one another, an arcuate, preferably arc-shaped contour of the sheet metal piece 19 is produced.
  • Fig. 5 an already prefabricated shell segment 4 is shown, on which also the flange-shaped portions 21 and thereof axially projecting apron-shaped portions 22 are formed. These are formed integrally with the shell segment 4.
  • the flange-shaped portions 21 and thereof axially projecting apron-shaped portions 22 are formed integrally with the shell segment 4.
  • the sections 21, 22 can be mitgeformt before and / or during the bending process.
  • Fig. 7 shows possible variants of a pipe section 2 of a muffler, which can be produced by a manufacturing method according to the invention.
  • a composite of three shell segments 4, 5, 6 pipe section 2 can be seen; to the right of one of four shell segments, and below a composite of only two shell segments pipe section 2.
  • pipe sections can also consist of five or more segments, but this increases the effort in assembling.
  • the invention also includes a silencer produced according to the invention, which is composed of at least two shell segments.
  • Fig. 6 finally shows a vehicle 24, with a turbocharger 23 and a connected to the pressure side of the turbocharger 23, inventive or inventively produced muffler.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Exhaust Silencers (AREA)

Claims (20)

  1. Silencieux (1), plus particulièrement silencieux de véhicule, avec une portion tubulaire interne (2) et au moins une chambre de résonance (14, 15) réalisée à l'extérieur de la portion tubulaire (2), la portion tubulaire (2) comprend, dans sa surface externe (3), au moins une ouverture (7, 8) qui relie l'intérieur de la portion tubulaire (2) avec la chambre de résonance (14, 15), caractérisé en ce que la surface externe (3) de la portion tubulaire interne est constituée d'au moins trois segments de surface externe (4, 5, 6) disposés de manière adjacente le long de la circonférence du tube, qui s'étendent chacun dans la direction axiale d'un premier élément de raccordement (11) à un deuxième élément de raccordement (12), des premières extrémités (9) des segments de surface externe (4, 5, 6) étant reliés avec le premier élément de raccordement (11) et des deuxièmes extrémités (10), opposées aux premières extrémités (9), des segments de surface externe (4, 5, 6) étant reliées avec le deuxième élément de raccordement (12).
  2. Silencieux selon la revendication 1, caractérisé en ce que la surface externe (3) de la portion tubulaire interne (2) est constituée de trois segments de surface externe (4, 5, 6) qui s'étendent chacun le long de la circonférence du tube sur globalement 120°.
  3. Silencieux selon la revendication 1 ou 2, caractérisé en ce que les segments de surface externe (4, 5, 6) sont constitués de différents morceaux de tôle (19) pré-pliés, de préférence des morceaux de tôle d'acier inoxydable.
  4. Silencieux selon l'une des revendications précédentes, caractérisé en ce que les premières extrémités (9) et/ou les deuxièmes extrémités (10) des segments de surface externe (4, 5, 6) sont soudées ou sont reliées par force avec le premier et/ou le deuxième élément de raccordement (11, 12).
  5. Silencieux selon l'une des revendications précédentes, caractérisé en ce que les premières extrémités (9) et/ou les deuxièmes extrémités (10) des segments de surface externe (4, 5, 6) comprennent chacune au moins une portion en forme de bride (21).
  6. Silencieux selon l'une des revendications précédentes, caractérisé en ce que les premières extrémités (9) et/ou les deuxièmes extrémités (10) des segments de surface externe (4, 5, 6) comprennent chacune au moins une portion en forme de jupe (22), la portion en forme de jupe (22) s'appuyant contre un élément de raccordement (12).
  7. Silencieux selon l'une des revendications précédentes, caractérisé en ce que les segments de surface externe (4, 5, 6) adjacents s'appuient les uns contre les autres de manière lâche avec leurs arêtes axiales (13), un interstice s'étendant dans la direction axiale étant réalisé de préférence au moins entre deux segments de surface externe (4, 5,6).
  8. Silencieux selon l'une des revendications précédentes, caractérisé en ce que la section transversale des segments de surface externe (4, 5, 6) présente la forme d'un arc perpendiculairement à la direction axiale, de préférence la forme d'un arc de cercle.
  9. Silencieux selon l'une des revendications précédentes, caractérisé en ce que chaque segment de surface externe (4, 5, 6) comprend au moins un, de préférence deux évidements (17, 18) qui forment les ouvertures (7, 8) dans la surface externe (3) de la portion tubulaire interne (2).
  10. Silencieux selon l'une des revendications précédentes, caractérisé en ce que les segments de surface externe (4, 5, 6) formant la portion tubulaire interne (2) présentent la même taille et la même forme, de préférence la forme, la disposition et la taille des évidements (17, 18) étant identiques dans tous les segments de surface externe (4, 5, 6).
  11. Silencieux selon l'une des revendications précédentes, caractérisé en ce que l'au moins une chambre de résonance (14, 15) entoure la portion tubulaire interne (2) le long de toute sa circonférence, de préférence la portion tubulaire interne (2) étant entièrement entourée par les parois de la chambre de résonance.
  12. Silencieux selon l'une des revendications précédentes, caractérisé en ce que le silencieux (1) comprend au moins deux chambres de résonance (14, 15) séparées entre elles, qui sont disposées l'une derrière l'autre dans la direction axiale, la surface externe (3) de la portion tubulaire interne (2) comprenant des premières ouvertures (7), qui débouchent dans la première chambre de résonance (14) et des deuxièmes ouvertures (8) qui débouchent dans la deuxième chambre de résonance (15).
  13. Véhicule, plus particulièrement véhicule routier, avec un silencieux (1), plus particulièrement un silencieux de turbocompresseur, qui est disposé du côté de la compression d'un turbocompresseur (23), caractérisé en ce que le silencieux (1) est un silencieux selon l'une des revendications précédentes.
  14. Procédé de fabrication d'un silencieux (1), plus particulièrement d'un silencieux de véhicule, avec une portion tubulaire interne (2) et au moins une chambre de résonance (14, 15) réalisée à l'extérieur de la portion tubulaire (2), la portion tubulaire (2) comprenant, dans sa surface externe (3), au moins une ouverture (7, 8) qui relie l'intérieur de la portion tubulaire (2) avec la chambre de résonance (14, 15), caractérisé en ce que des segments de surface externe (4, 5, 6) sont préfabriqués sous la forme d'éléments individuels et indépendamment des parois de résonance entourant la/les chambre(s) de résonance à l'extérieur et en ce que la surface externe (3) de la portion tubulaire interne (2) est formée par assemblage des segments de surface externe préfabriqués (4, 5, 6), la surface (3) de la paroi tubulaire interne (2) étant constituée d'au moins trois segments de surface externe (4, 5, 6) et les segments de surface externe (4, 5, 6) étant disposés de manière répartie le long de la circonférence du tube et s'étendant chacun dans la direction axiale d'un premier élément de raccordement (11) vers un deuxième élément de raccordement (12), et en ce que des premières extrémités (9) des segments de surface externe (4, 5, 6) sont reliés avec le premier élément de raccordement (11) et des deuxièmes extrémités (10), opposées aux premières extrémités (9), des segments de surface externe (4, 5, 6) sont reliés avec le deuxième élément de raccordement (12).
  15. Procédé selon la revendication 14, caractérisé en ce que la surface externe (3) de la portion tubulaire interne (2) est constituée de trois segments de surface externe (4, 5, 6), qui s'étendent chacun le long de la circonférence du tube sur globalement 120°.
  16. Procédé selon la revendication 14 ou 15, caractérisé en ce que les segments de surface externe (4, 5, 6) sont fabriqués chacun par un processus de pliage d'un morceau de tôle (19), de préférence d'un morceau de tôle d'acier inoxydable, les segments de surface externe (4, 5, 6) étant transformés, par le processus de pliage, en une forme avec une section transversale en forme d'arc, de préférence en forme d'arc de cercle.
  17. Procédé selon la revendication 16, caractérisé en ce que les morceaux de tôle (19) sont découpés, avant le processus de pliage, à partir d'une une tôle globalement plane (20), à la taille des segments de surface externe (4, 5, 6), de préférence la tôle (20) existant sous la forme d'une bande de tôle dont la largeur correspond déjà la largeur du segment de surface externe (4, 5, 6) à préfabriquer.
  18. Procédé selon l'une des revendications 16 à 17, caractérisé en ce que, avant le processus de pliage, des évidements (17, 18) sont réalisés dans le morceau de tôle (19), qui forment, dans l'état assemblé des segments de surface externe (4, 5, 6), des ouvertures (7, 8) dans la surface externe (3) de la portion tubulaire interne (2), de préférence la réalisation des évidements (17, 18) étant effectuée par usinage au laser.
  19. Procédé selon l'une des revendications 14 à 18, caractérisé en ce que, au niveau des premières extrémités (9) et/ou des deuxièmes extrémités (10) des segments de surface externe (4, 5, 6), est formée une portion en forme de bride (21) et/ou au moins une portion en forme de jupe (22).
  20. Procédé selon l'une des revendications 14 à 19, caractérisé en ce que les premières extrémités (9) et/ou les deuxièmes extrémités (10) des segments de surface externe (4, 5, 6) sont soudées ou reliées par force avec le premier et/ou le deuxième élément de raccordement (11, 12).
EP14151358.0A 2013-01-16 2014-01-16 Silencieux et son procédé de fabrication Not-in-force EP2757234B1 (fr)

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ATA50023/2013A AT513955A1 (de) 2013-01-16 2013-01-16 Schalldämpfer und Verfahren zu seiner Herstellung

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EP2907997B1 (fr) * 2014-02-13 2018-05-23 Ls Mtron Ltd. Résonateur pour véhicule
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US10436159B2 (en) * 2015-05-29 2019-10-08 Henn Gmbh & Co Kg. Vehicle silencer
CN109973391A (zh) * 2019-05-05 2019-07-05 烟台菱辰能源有限公司 一种用于燃料电池的罗茨空压机的降噪装置
DE102020106017B3 (de) * 2020-03-05 2021-07-29 Umfotec Gmbh Schalldämpfer für eine Fluidströmungsleitung und Verfahren zu dessen Herstellung

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EP2757234A1 (fr) 2014-07-23
US20140196978A1 (en) 2014-07-17
AT513955A1 (de) 2014-08-15

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