EP1548701A1 - Kanal mit integrierten akustischen Dämpfer und Verfahren zu dessen Herstellung - Google Patents

Kanal mit integrierten akustischen Dämpfer und Verfahren zu dessen Herstellung Download PDF

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Publication number
EP1548701A1
EP1548701A1 EP04106752A EP04106752A EP1548701A1 EP 1548701 A1 EP1548701 A1 EP 1548701A1 EP 04106752 A EP04106752 A EP 04106752A EP 04106752 A EP04106752 A EP 04106752A EP 1548701 A1 EP1548701 A1 EP 1548701A1
Authority
EP
European Patent Office
Prior art keywords
conduit
silencer
quarter
segment
attenuators
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.)
Granted
Application number
EP04106752A
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English (en)
French (fr)
Other versions
EP1548701B1 (de
Inventor
Jérémy Delebecq
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.)
Sogefi Air and Cooling SAS
Original Assignee
Mark IV Systemes Moteurs SAS
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Publication of EP1548701A1 publication Critical patent/EP1548701A1/de
Application granted granted Critical
Publication of EP1548701B1 publication Critical patent/EP1548701B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with exhaust gas flow passages
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

Definitions

  • the present invention relates to the field of gaseous fluid circulation conduits and pipes, in particular those forming part of the equipment and parts of vehicles with an internal combustion engine and has for its object a conduit or pipe of the aforementioned type comprising integrated acoustic attenuators, and a method for the production thereof.
  • conduit/attenuator assembly of this type should be easy and inexpensive to produce, and have high vibration and impact resistance.
  • the object of the present invention is, in particular, to respond to the aforementioned demand.
  • the invention relates to a gaseous fluid circulation conduit or pipe, provided with an arrangement of acoustic attenuators, extending laterally in the region of an intermediate segment of said conduit or pipe and opening into the interior volume of said segment, characterised in that said arrangement comprises a multi-hole silencer and two quarter-wave attenuators, said quarter-wave attenuators being disposed so as to be acoustically coupled to said silencer, in that said intermediate segment has a substantially rectilinear structure with a central circulation axis or median axis, and in that the multi-hole silencer, on the one hand, and the two quarter-wave attenuators, on the other hand, are located either side of said median axis of said segment, so as to form, together with this silencer and these two attenuators, a single-piece structure with a substantially flat configuration or constitution.
  • FIGS 1 to 4 and 7 of the accompanying drawings show a conduit or pipe 1 for the circulation of gaseous fluid, in particular a gaseous mixture of various gaseous fluids, provided with an arrangement of acoustic attenuators 2, 3, 3' extending laterally in the region of an intermediate segment 4 of said conduit or pipe 1 and opening into the interior volume of said segment 4.
  • gaseous fluid in particular a gaseous mixture of various gaseous fluids
  • acoustic attenuators 2, 3, 3' extending laterally in the region of an intermediate segment 4 of said conduit or pipe 1 and opening into the interior volume of said segment 4.
  • said arrangement of attenuators comprises a multi-hole silencer 2 and two quarter-wave attenuators 3 and 3', said quarter-wave attenuators 3 and 3' being disposed so as to be acoustically coupled to said silencer 2.
  • Said intermediate segment 4 has a structure that is substantially rectilinear with a central circulation axis or median axis X, and the multi-hole silencer 2, on the one hand, and the two quarter-wave attenuators 3 and 3', on the other hand, are located either side of said median axis X of said segment 4, so as to form, together with this silencer 2 and these two attenuators 3 and 3', a single-piece structure 5 with a substantially flat configuration or constitution.
  • the multi-hole silencer 2 and the two quarter-wave attenuators 3 and 3' have, viewed in lateral elevation in the median plane PM of the structure 5 with a flat configuration, formed by the multi-hole silencer 2/intermediate segment 4/quarter-wave attenuators 3 and 3' assembly, or in a plane parallel to this median plane, a thickness or an exterior height at most substantially equal to the thickness or the exterior height of the intermediate segment 4, in the direction perpendicular to said median plane PM, said median plane PM containing the central circulation or median axis X of said intermediate segment 4.
  • the multi-hole silencer 2 consists of a caisson or similar closed hollow body, formed on the wall of the intermediate segment 4 and communicating with the interior volume thereof through a plurality of openings 2', and each of the two quarter-wave attenuators 3 and 3' consists of a hollow body in the form of a deformation towards the exterior, forming a cavity in the wall of the intermediate segment 4, the two attenuators 3 and 3' having different dimensions, in particular different depths.
  • openings 2' may, for example, be in the form of through-perforations provided in the wall portion, common with the silencer 2, of the intermediate segment 4, and forming a wall portion contributing to the delimitation of the interior volume of said silencer.
  • the openings 2' may also be in the form of through-perforations provided in a plate or the like, made of a metallic or rigid synthetic material, mounted in a cut-out of the wall portion, common with the silencer 2, of the intermediate segment 4, the edges of said plate defining baffle structures with the edges of said cut-out.
  • the multi-hole silencer 2 may, for example, have a parallelepiped, preferably rectangular, shape, and each of the quarter-wave attenuators 3 and 3' consist of a cylindrical cavity, with a circular or non-circular section.
  • the large opposite walls delimiting the sound-proofing caisson of the multi-hole silencer in the form of a flattened parallelepiped, may advantageously be connected to the wall of the intermediate segment 4 by reinforcing ribs 4', rigidifying their mutual connection.
  • the respective relative dispositions of the quarter-wave attenuators 3 and 3' in relation to the multi-hole silencer 2, in the direction of fluid flow in the segment 4, may be varied, as a function, in particular, of the desired attenuation profile.
  • the two attenuators 3 and 3' may thus both be located upstream or downstream of said silencer 2, or alternatively, as shown in the accompanying figures, be located facing each other, either side of the apertures forming communication openings 2' between the internal volumes of said silencer 2 and said intermediate segment 4.
  • the conduit or pipe consists of a conduit 1 through which the gaseous flow emitted from a turbocompressor of an internal combustion engine passes, it may advantageously be provided that the shapes, the dimensions, the relative dispositions and the degree of acoustic coupling of the multi-hole silencer 2 and the two quarter-wave attenuators 3 and 3' are defined in such a way that the arrangement of acoustic attenuators 2, 3, 3' has an attenuation of at least 20 dB in the 1,500 Hz to 3,200 Hz frequency range.
  • the two quarter-wave attenuators 3 and 3' allow attenuation to be reinforced in the region of the extreme values of the frequency range to be attenuated, and will consequently be configured and dimensioned with this object.
  • At least the assembly formed by said intermediate segment 4 with the multi-hole silencer 2 and the two quarter-wave attenuators 3 and 3' is formed by joining two single-piece parts 7 and 7', in the region of assembly zones 6 located in the median plane PM of the structure with a flat configuration 5 formed by the aforementioned assembly, containing the central circulation or median X axis of the intermediate rectilinear conduit segment 4, each of the single-piece parts 7, 7' being formed by wall portions of the intermediate segment 4, the multi-hole silencer 2 and two quarter-wave attenuators 3 and 3'.
  • any conduit segments and/or additional fittings also forming part of the conduit or pipe 1 may be connected to the opposite ends of the intermediate segment 4 by an appropriate joining technique, after production of the structure 5.
  • the conduit or pipe 1 may be formed by joining two constituent parts 8 and 8', each of a single piece, a first part 8 comprising a first tubular fitting 9, optionally a wall portion of a first conduit segment, first wall portions 7 of the multi-hole silencer 2/intermediate segment 4/quarter-wave attenuators 3 and 3' assembly, optionally a wall portion of a third conduit segment 11 and a second tubular fitting 12, and a second part 8' comprising second wall portions 7' of the multi-hole silencer 2/intermediate segment 4/quarter-wave attenuators 3 and 3' assembly, which second wall portions 7' are complementary to the aforementioned first wall portions 7, and, optionally, wall portions 10', 11' complementary to the first and/or third conduit segment(s), the assembly zones 6 of these two constituent parts 8, 8' preferably being located, in the region of the structure 5 with a flat configuration formed by the aforementioned assembly, in the
  • the first and/or the third conduit segment(s) 10 and 10', 11 and 11' may optionally be omitted, the corresponding fitting(s) 9, 12 then being directly contiguous to the intermediate segment 4 (variants not shown).
  • each of the constituent single-piece parts 7, 7'; 8, 8' is produced by injection-moulding of thermoplastic material(s), optionally filled or reinforced with fibres, and the joining of the two parts 7, 7'; 8, 8' in the region of their assembly zones consists in vibration welding.
  • the openings 2' are provided in the common wall portion between the segment 4 and the silencer 2.
  • the openings 2' are provided in a connected plate forming an insert, said plate forming part of the wall portion, common with the silencer 2 and comprising the openings 2', of the intermediate segment 4 is mounted with locking in the corresponding receiving cut-out of this wall portion, in the region of a peripheral groove, and is held by compression between the two parts 7, 7'; 8, 8'.
  • the present invention also relates to a method of producing a gaseous fluid circulation conduit or pipe of the above-described type.
  • This method is characterised in that it consists in separately producing, by injection moulding, two complementary constituent parts 8 and 8', each of a single piece, i.e. a first part 8 comprising a first tubular fitting 9, optionally a wall portion of a first conduit segment, first wall portions 7 of the multi-hole silencer 2/intermediate segment 4/quarter-wave attenuators 3 and 3' assembly, optionally a wall portion of a third conduit segment 11 and a second tubular fitting 12, and a second part 8' comprising second wall portions 7' of the multi-hole silencer 2/intermediate segment 4/quarter-wave attenuators 3 and 3' assembly, which second wall portions are complementary to the aforementioned first wall portions 7, and, optionally, wall portions 10', 11' complementary to the first and/or third conduit segment(s), and in joining the two complementary constituent parts 8 and 8' by vibration welding, in the region of assembly zones defined by the partition of the walls of the conduit or pipe, the multi-hole silencer 2 and the two quarter-wave attenuators
  • the two parts 7 and 7' may first be produced, then joined into a single structure 5 and, finally, the additional (first and third) conduit segments and the fittings 9 and 12 be connected.
  • This variant of the method will involve additional assembly processes, but will allow greater flexibility with regard to the construction of the final conduit or pipe 1 (possibility of introducing various segments or fittings).
  • the complementary wall portions forming, by cooperation and joining, the rectilinear intermediate segment 4 of the conduit or pipe 1 each comprise a part, preferably half, of the through-openings 2' of the multi-hole silencer 2, these openings 2' being formed during the production of the corresponding constituent part 8, 8', by demoulding in an inclined movement in relation to the principal demoulding axis formed by the direction, perpendicular to the imaginary plane containing the assembly zones 6, of the wall portions 7, 7' of the structure 5 with a substantially flat configuration.
  • the complementary wall portions forming, by cooperation and joining, the rectilinear intermediate segment 4 may each comprise, in the region of their parts forming, by cooperation, a wall portion common with the multi-hole silencer 2, a cut-out part, these two cut-out parts forming by cooperation, at the moment when the two constituent parts 8 and 8' are joined, a receiving cut-out for a plate or the like comprising openings 2', this plate being mounted in one of said parts 8, 8' prior to assembly and held after assembly in a peripheral groove of the receiving cut-out, by being locked by compression.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Exhaust Silencers (AREA)
EP04106752.1A 2003-12-23 2004-12-20 Kanal mit integrierten akustischen Dämpfer und Verfahren zu dessen Herstellung Expired - Lifetime EP1548701B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0315280A FR2864199B1 (fr) 2003-12-23 2003-12-23 Conduit a attenuateurs acoustiques integres et son procede fabrication
FR0315280 2003-12-23

Publications (2)

Publication Number Publication Date
EP1548701A1 true EP1548701A1 (de) 2005-06-29
EP1548701B1 EP1548701B1 (de) 2015-12-16

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EP04106752.1A Expired - Lifetime EP1548701B1 (de) 2003-12-23 2004-12-20 Kanal mit integrierten akustischen Dämpfer und Verfahren zu dessen Herstellung

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EP (1) EP1548701B1 (de)
FR (1) FR2864199B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1795719A1 (de) * 2005-11-02 2007-06-13 J. Eberspächer GmbH & Co. KG Schalldämpfer für eine Abgasanlage
FR2894645A1 (fr) * 2005-12-13 2007-06-15 Coutier Moulage Gen Ind Conduit de transport de gaz ayant un ecoulement a pression variable avec attenuation acoustique integree
JP2015206314A (ja) * 2014-04-22 2015-11-19 小島プレス工業株式会社 燃料電池車の排気音の消音構造
US10065370B2 (en) 2014-04-15 2018-09-04 The Boeing Company Method of making a monolithic part
CN116698393A (zh) * 2023-08-08 2023-09-05 江苏垒博汽配制造有限公司 散音器与消音器壳体的装配检测工装以及检测方法
WO2024011964A1 (zh) * 2022-07-12 2024-01-18 合肥美的电冰箱有限公司 消音器

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7526094B2 (en) * 2003-03-25 2009-04-28 Robert Hickling Normalization and calibration of microphones in sound-intensity probes
FR3027995B1 (fr) 2014-11-05 2018-06-15 Systemes Moteurs Conduit integrant un dispositif d'attenuation acoustique
CN105587373B (zh) * 2015-03-31 2018-11-23 徐工集团工程机械股份有限公司 一种消声装置及车辆发动机
DE102015211460A1 (de) * 2015-06-22 2016-12-22 Bayerische Motoren Werke Aktiengesellschaft Abgasanlage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415059A (en) * 1981-07-22 1983-11-15 Nissan Motor Company Muffler
EP0564692A2 (de) * 1992-04-10 1993-10-13 Ap Parts Manufacturing Company Durch Stanzen hergestellter Schalldämpfer mit Reihenexpansionskammer und gebogen geformten Effektifströmungsröhren
EP0646447A1 (de) * 1993-10-04 1995-04-05 Fuji Jukogyo Kabushiki Kaisha Verfahren und Vorrichtung zur Herstellung eines mehrschichtigen Gegenstandes aus Kunststoff
EP0802308A1 (de) * 1996-04-18 1997-10-22 HEINRICH GILLET GMBH & CO. KG Schalldämpfer
US5783780A (en) * 1995-11-27 1998-07-21 Nissan Motor Co., Ltd Sound absorption structure
EP1316715A2 (de) * 2001-11-30 2003-06-04 Delphi Technologies, Inc. Spritzgegossener Einlasskrümmer für eine V-förmige Brennkraftmaschine
FR2840847A1 (fr) * 2002-06-13 2003-12-19 Mark Iv Systemes Moteurs Sa Procede de fabrication d'un tuyau muni d'au moins un attenuateur et tuyau resultant

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415059A (en) * 1981-07-22 1983-11-15 Nissan Motor Company Muffler
EP0564692A2 (de) * 1992-04-10 1993-10-13 Ap Parts Manufacturing Company Durch Stanzen hergestellter Schalldämpfer mit Reihenexpansionskammer und gebogen geformten Effektifströmungsröhren
EP0646447A1 (de) * 1993-10-04 1995-04-05 Fuji Jukogyo Kabushiki Kaisha Verfahren und Vorrichtung zur Herstellung eines mehrschichtigen Gegenstandes aus Kunststoff
US5783780A (en) * 1995-11-27 1998-07-21 Nissan Motor Co., Ltd Sound absorption structure
EP0802308A1 (de) * 1996-04-18 1997-10-22 HEINRICH GILLET GMBH & CO. KG Schalldämpfer
EP1316715A2 (de) * 2001-11-30 2003-06-04 Delphi Technologies, Inc. Spritzgegossener Einlasskrümmer für eine V-förmige Brennkraftmaschine
FR2840847A1 (fr) * 2002-06-13 2003-12-19 Mark Iv Systemes Moteurs Sa Procede de fabrication d'un tuyau muni d'au moins un attenuateur et tuyau resultant

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JULIAN EDGER: "Driving Emotion", AUTOSPEED, no. 258, 30 November 2003 (2003-11-30), BORONIA, VICTORIA, AUSTRALIA, XP002325076, Retrieved from the Internet <URL:http://www.autospeed.com/cms/A_1969/article.html> [retrieved on 20050418] *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1795719A1 (de) * 2005-11-02 2007-06-13 J. Eberspächer GmbH & Co. KG Schalldämpfer für eine Abgasanlage
FR2894645A1 (fr) * 2005-12-13 2007-06-15 Coutier Moulage Gen Ind Conduit de transport de gaz ayant un ecoulement a pression variable avec attenuation acoustique integree
US10065370B2 (en) 2014-04-15 2018-09-04 The Boeing Company Method of making a monolithic part
JP2015206314A (ja) * 2014-04-22 2015-11-19 小島プレス工業株式会社 燃料電池車の排気音の消音構造
WO2024011964A1 (zh) * 2022-07-12 2024-01-18 合肥美的电冰箱有限公司 消音器
CN116698393A (zh) * 2023-08-08 2023-09-05 江苏垒博汽配制造有限公司 散音器与消音器壳体的装配检测工装以及检测方法
CN116698393B (zh) * 2023-08-08 2023-11-14 江苏垒博汽配制造有限公司 散音器与消音器壳体的装配检测工装以及检测方法

Also Published As

Publication number Publication date
FR2864199B1 (fr) 2006-02-24
FR2864199A1 (fr) 2005-06-24
EP1548701B1 (de) 2015-12-16

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