EP2085581A1 - Procédé de fabrication d'un amortisseur acoustique de gaz d'échappement et amortisseur acoustique de gaz d'échappement - Google Patents

Procédé de fabrication d'un amortisseur acoustique de gaz d'échappement et amortisseur acoustique de gaz d'échappement Download PDF

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Publication number
EP2085581A1
EP2085581A1 EP09001062A EP09001062A EP2085581A1 EP 2085581 A1 EP2085581 A1 EP 2085581A1 EP 09001062 A EP09001062 A EP 09001062A EP 09001062 A EP09001062 A EP 09001062A EP 2085581 A1 EP2085581 A1 EP 2085581A1
Authority
EP
European Patent Office
Prior art keywords
shell
shells
sheet metal
outer shell
exhaust silencer
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.)
Withdrawn
Application number
EP09001062A
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German (de)
English (en)
Inventor
Christian Dr. Smatloch
Pieter Van Den Eijkel
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik GmbH
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 Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP2085581A1 publication Critical patent/EP2085581A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
    • 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
    • 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
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/18—Exhaust treating devices having provisions not otherwise provided for for improving rigidity, e.g. by wings, ribs

Definitions

  • the invention relates to a method for producing an exhaust silencer and an exhaust silencer.
  • Exhaust mufflers are known in the prior art in various embodiments.
  • a Silencer or Muffler out which is wound in the region of its outer surface of two superimposed sheets, which are folded at one end.
  • the sheets have on the inside and / or outside beads, whereby the sheets are spaced.
  • a disadvantage of the known exhaust mufflers the high weight is considered.
  • the weight is largely determined by the thickness of the sheets used.
  • Conventional exhaust mufflers use sheets with a thickness of 0.7 mm to 1.2 mm.
  • the high weight results in a correspondingly increased fuel consumption.
  • the Design variety greatly limited by the known thermoforming and winding process.
  • the invention is based on the object to provide a method for producing an exhaust silencer and an exhaust silencer, which are characterized by a lower weight and also can be made more efficient.
  • the method according to claim 1 provides initially to provide sheet metal blanks. These sheet metal blanks are deep-drawn to produce inner shells and outer shells. Subsequently, at least one bead is formed in an inner shell and / or an outer shell. Thereafter, the inner shells are inserted into the respective corresponding outer shells to produce half-shells. Finally, corresponding half shells are joined.
  • the special feature of the method is that the beads are formed only after deep drawing, while it was previously common to mold in the beads during deep drawing. In this way, the thermoforming no longer has to take into account the restrictions that would result from the deep drawing of beads. In particular, less expensive materials can be used because the degrees of deformation are lower. Another advantage is that the sheet thicknesses can be reduced, resulting in a weight savings. Finally, the freedom of design increases, so that a larger number of forms is possible.
  • the exhaust muffler according to claim 12 comprises two half shells, wherein the half shells each having an inner shell and an outer shell, which are made of sheet metal blanks by deep drawing, and wherein in a inner shell or an outer shell, a bead is provided.
  • a sheet metal blank has a thickness of 0.3 mm to 0.5 mm.
  • the exhaust silencer according to the invention is particularly efficient to produce and is characterized by its low weight.
  • an exhaust muffler can be provided, which can be adapted in shape to the respective requirements - without the need for higher quality materials should be used. Due to the small thickness of the sheet metal blank, the weight is also advantageously reduced. Both have an advantageous effect on the manufacturing cost of the exhaust muffler.
  • beads are formed in an inner shell and an outer shell at corresponding points, which form a channel.
  • a bead inwardly - to the center of the later exhaust muffler - molded, while at the same point in the outer shell, a bead is formed to the outside.
  • a channel is formed, which extends, for example, tubular over the lateral surface of a half-shell. It is also possible to arrange a plurality of these channels in parallel on a lateral surface of a half-shell, so that the lateral surface receives a cross-sectional shape which is similar to an air mattress. By this measure, the cross-sectional stiffness of the half-shells is advantageously increased.
  • At least one intermediate shell is arranged between an inner shell and an outer shell.
  • the intermediate shell allows a multilayer structure of the exhaust muffler and can be used to influence the damping or noise transmission behavior.
  • At least one sheet metal blank with a thickness between 0.3 mm and 0.5 mm is used for the method.
  • the small thickness first causes a weight reduction of the exhaust muffler produced.
  • the small sheet thickness has a positive effect on the transmission capability of exhaust noise.
  • the reduction in thickness is made possible by the fact that the inner shell takes on a supporting function in addition to the outer shell.
  • Tailored blanks are also known as patchwork blanks. These are in each case sheets, which are composed of several edges welded sheet metal pieces. This makes it possible to adapt the thickness of the sheet metal blanks to the expected load situations and to carry out stronger in the areas in which a higher mechanical stress, for example by an exhaust gas inlet, an exhaust gas outlet or a suspension occurs.
  • areas of the inner shells, outer shells and / or intermediate shells, which transmit emission noises can be made thinner in thickness. In this way, the passage of noise from the inside of the exhaust muffler is facilitated to the outside. This can be used to design the exhaust noise, i. to make a sound design possible.
  • Sheet metal blanks made of different materials can be used. As a result, a more cost-effective exhaust muffler can be produced because only the particularly stressed areas of the inner walls must be provided from a high-quality material. For the outer shells, a cheaper material can be used.
  • outer shells and / or intermediate shells can continue to be arranged insulating materials.
  • the insulation materials are used for sound and / or heat insulation.
  • the inner shell, outer shell and / or intermediate shell of a half shell are joined at least in sections in the region of their lateral surfaces.
  • At least one opening can be introduced, preferably drilled, in an inner shell, outer shell and / or intermediate shell.
  • the opening can be provided for a variety of tasks. For example, it can serve as a drain opening for condensate. Condensate accumulates regularly when operating an internal combustion engine in an exhaust muffler at its lowest point. If the condensate is not removed, this leads to premature corrosion of the exhaust muffler. Instead of a discharge opening but can also be a Kondensatabsaugvorides mounted in the exhaust muffler, which causes a discharge of the condensate through an exhaust gas outlet opening. Also can propagate through the opening sound from the interior of the exhaust muffler in the channel or in the channels between the inner shell and the outer shell, are reflected there and lead to the extinction or damping of the exhaust noise.
  • a plurality of beads are formed in the inner shell, outer shell and / or intermediate shell, which form a branched network of channels between an inner shell and an adjacent outer shell.
  • resonators are formed, which reflect the sound targeted to extinguish the disturbing exhaust noise by interference.
  • FIG. 1 an exhaust muffler 1 is shown in fragmentary form.
  • the exhaust muffler 1 consists of two half-shells 2, 3, each having an inner shell 4, 5 and an outer shell 6, 7.
  • beads 8, 9 are formed in each case at corresponding points, the parallel channels 10 on the outer surface 11 of the exhaust muffler 1 form.
  • the half-shells 2, 3 have edge-side circumferential flanges 12, 13, on which the half-shells 2, 3 joined, in particular welded, are.
  • a bottom 15 is provided which has a central opening 16 for an exhaust gas inlet.
  • the inner shells 4,5 are made of high-grade, particularly heat- and exhaust-resistant stainless steel, while the outer shells 6, 7 are made of simpler steel.
  • FIG. 2 the lateral surface 11 of a half-shell 2 is shown in detail. It can be seen clearly arranged at corresponding locations beads 8, 9 in the inner shell 4 and the outer shell 6, which form a total of seven channels 10 in this illustration, which are arranged parallel to each other. For this purpose, the beads 8, 9 have been formed in the inner shell 4 to the inside and in the outer shell 6 to the outside.
  • the inner shells 4, 5 and the outer shells 6, 7 are also in the region of the lateral surface 11 at contact points 17 (FIG. Fig. 2 ) joined together, in particular stamped, so mechanically pressed together.
  • FIG. 3 shows a sectional view of the exhaust muffler 1 in the region of the side flanges 12, 13 of the half-shells 2, 3. It can be seen that the beads 8 in the inner shells 4, 5 and the beads 9 in the outer shells 6, 7 at a distance a to the flanges 12, 13 end. By this measure, the inner shells 4, 5 and the outer shells 6, 7 in the region of the flanges 12, 13 directly to each other, whereby the stability of the exhaust muffler 1 is advantageously increased. In the area of the flanges 12, 13, an edge-side, circumferential joint, in particular welding, is provided.
  • the choice of the welding process is determined by the materials to be welded and the thicknesses d of the inner shells 4, 5 and the outer shells 6, 7. Through the beads 8, 9 channels 10 are formed, which have a considerable volume.
  • the channels 10 are filled by insulating materials 18.
  • FIGS. 4, 5 and 6 is a half-shell 30 of an exhaust muffler 31 shown, the outer shell 32 is made smooth.
  • the half-shell 30 is the upper shell of the exhaust muffler 31.
  • the lower shell is mirror-symmetrical.
  • Only the inner shell 33 has molded inwardly beads 34, which have a broad bead bottom 35.
  • An exhaust gas inlet opening 36 is not provided in the region of the end shell portions 37, 38, but in the area of the lateral surface 39.
  • an opening 40 is drilled, which serves the vent and a transfer of exhaust noise from the interior 41 of the exhaust muffler 31 in between the inner shell 33 and the outer shell 32 formed channel 42 allows.
  • a sheet metal blank 50 is shown which is a tailored blank.
  • the sheet metal blank 50 consists of two sheet metal pieces 51, 52, which are welded together at the edges.
  • One sheet piece 51 has a thickness d1 of 0.3 mm and the other sheet piece 52 has a thickness d2 of 0.35 mm.

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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)
EP09001062A 2008-01-28 2009-01-27 Procédé de fabrication d'un amortisseur acoustique de gaz d'échappement et amortisseur acoustique de gaz d'échappement Withdrawn EP2085581A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008006401A DE102008006401A1 (de) 2008-01-28 2008-01-28 Verfahren zur Herstellung eines Abgasschalldämpfers und Abgasschalldämpfer

Publications (1)

Publication Number Publication Date
EP2085581A1 true EP2085581A1 (fr) 2009-08-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09001062A Withdrawn EP2085581A1 (fr) 2008-01-28 2009-01-27 Procédé de fabrication d'un amortisseur acoustique de gaz d'échappement et amortisseur acoustique de gaz d'échappement

Country Status (3)

Country Link
US (1) US7926615B2 (fr)
EP (1) EP2085581A1 (fr)
DE (1) DE102008006401A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010005761A1 (de) 2010-01-25 2011-07-28 Benteler Automobiltechnik GmbH, 33102 Abgasbaugruppe
DE102012209932A1 (de) * 2012-06-13 2013-12-19 Eberspächer Exhaust Technology GmbH & Co. KG Leichtbau-Schalldämpfer
US9677455B2 (en) * 2014-07-17 2017-06-13 Big Rapids Products, Inc. Stackable muffler shell
JP2016044626A (ja) * 2014-08-25 2016-04-04 トヨタ自動車株式会社 マフラ装置およびマフラ装置の製造方法
WO2016196550A1 (fr) * 2015-06-02 2016-12-08 Lydall, Inc. Écran thermique comprenant un élément d'étanchéité
US10427778B2 (en) * 2016-03-14 2019-10-01 The Boeing Company Heat shield assembly and method
JP6626530B2 (ja) 2018-05-22 2019-12-25 マレリ株式会社 エンジン用マフラ

Citations (8)

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Publication number Priority date Publication date Assignee Title
US1701397A (en) 1925-09-16 1929-02-05 Gen Motors Corp Muffler
US2835336A (en) 1953-07-15 1958-05-20 Oldberg Mfg Company Silencer or muffler
US4598790A (en) * 1983-01-20 1986-07-08 Honda Giken Kogyo Kabushiki Kaisha Heat and sound insulation device
US4598780A (en) 1984-03-02 1986-07-08 Teraoka Seiko Co., Ltd. Electronic scale printer
US5164551A (en) 1990-12-03 1992-11-17 Ap Parts Manufacturing Co. Stamp formed muffler with compound reinforcement pattern for preventing shell ring
EP0523008A1 (fr) 1991-07-08 1993-01-13 Scambia Industrial Developments Aktiengesellschaft Procédé de fabrication d'un silencieux ou d'un convertisseur catalytique pour des gaz d'échappement
US5859394A (en) 1997-06-12 1999-01-12 Ap Parts Manufacturing Company Muffler with stamped internal plates defining tubes and separating chambers
WO2001065078A1 (fr) 1998-04-03 2001-09-07 Arvinmeritor, Inc. Silencieux matrice

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US2315305A (en) * 1941-05-07 1943-03-30 Harold E Van Voorhees Muffler
US2661073A (en) * 1950-08-09 1953-12-01 Oldberg Mfg Company Silencer or muffler
US2717048A (en) * 1951-08-28 1955-09-06 Oldberg Mfg Company Muffler with vibration damping shell
US4759423A (en) * 1987-06-11 1988-07-26 Ap Industries, Inc. Tube and chamber construction for an exhaust muffler
US4821840A (en) * 1988-01-20 1989-04-18 Ap Parts Manufacturing Company Stamp formed exhaust muffler with conformal outer shell
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US4865154A (en) * 1988-09-26 1989-09-12 Tennessee Gas Pipeline Company Muffler with drain holes
US4860853A (en) * 1988-12-20 1989-08-29 Ap Parts Manufacturing Company Stamp formed muffler with nonplanar array of tubes
US5012891A (en) * 1989-02-15 1991-05-07 Tennessee Gas Pipeline Company Muffler assembly
US5004069A (en) * 1990-01-26 1991-04-02 Ap Parts Manufacturing Company Stamp formed muffler with transverse baffle tube
DE9100866U1 (de) * 1991-01-25 1992-05-27 Roth-Technik GmbH, 7560 Gaggenau Schalldämpfer für eine Abgasanlage
US5229557A (en) * 1991-05-28 1993-07-20 Arvin Industries, Inc. Rigidified muffler assembly
US5280142A (en) * 1991-10-18 1994-01-18 Ap Parts Manufacturing Company Heat shielded exhaust system component
US5448831A (en) * 1993-11-08 1995-09-12 Ap Parts Manufacturing Company Method of manufacturing a stamp formed muffler with hermetically sealed laminated outer shell
US5597986A (en) * 1995-02-27 1997-01-28 Ap Parts Manufacturing Company Stamp formed muffler with nested chambers
DE19722037A1 (de) * 1997-05-27 1998-12-03 Hecralmat Fa Hitzeschild mit Schallisolierung
US5939212A (en) * 1997-06-09 1999-08-17 Atd Corporation Flexible corrugated multilayer metal foil shields and method of making
EP1157199A4 (fr) * 1999-03-05 2002-05-29 Arvinmeritor Inc Silencieux a chambres multiples
DE10001532A1 (de) * 2000-01-15 2001-07-19 Eberspaecher J Gmbh & Co Abgasstrang eines Verbrennungsmotors
DE10107040A1 (de) * 2001-02-17 2002-08-29 Zeuna Staerker Kg Kraftfahrzeug-Schalldämpfer
EP1333164B1 (fr) * 2002-02-05 2004-01-28 J. Eberspächer GmbH & Co. KG Dispositif d'échappement pour moteur à combustion interne
US6892855B2 (en) * 2003-02-25 2005-05-17 Tenneco Automotive Operating Company Inc. Embossed shell for spun mufflers
US7273129B2 (en) * 2003-09-05 2007-09-25 Faurecia Exhaust Systems, Inc. Muffler with internal heat shield
US20100035078A1 (en) * 2007-01-11 2010-02-11 Staudt Eric K Embossed thermal shield and methods of construction and installation
DE102007024553A1 (de) * 2007-05-25 2008-11-27 Elringklinger Ag Strukturbauteil, insbesondere Hitzeschild

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1701397A (en) 1925-09-16 1929-02-05 Gen Motors Corp Muffler
US2835336A (en) 1953-07-15 1958-05-20 Oldberg Mfg Company Silencer or muffler
US4598790A (en) * 1983-01-20 1986-07-08 Honda Giken Kogyo Kabushiki Kaisha Heat and sound insulation device
US4598780A (en) 1984-03-02 1986-07-08 Teraoka Seiko Co., Ltd. Electronic scale printer
US5164551A (en) 1990-12-03 1992-11-17 Ap Parts Manufacturing Co. Stamp formed muffler with compound reinforcement pattern for preventing shell ring
EP0523008A1 (fr) 1991-07-08 1993-01-13 Scambia Industrial Developments Aktiengesellschaft Procédé de fabrication d'un silencieux ou d'un convertisseur catalytique pour des gaz d'échappement
US5859394A (en) 1997-06-12 1999-01-12 Ap Parts Manufacturing Company Muffler with stamped internal plates defining tubes and separating chambers
WO2001065078A1 (fr) 1998-04-03 2001-09-07 Arvinmeritor, Inc. Silencieux matrice

Also Published As

Publication number Publication date
US20090188747A1 (en) 2009-07-30
DE102008006401A1 (de) 2009-07-30
US7926615B2 (en) 2011-04-19

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