EP1495214A1 - Volume d'echappement comportant une enveloppe delimitant une passage de circulation des gaz - Google Patents
Volume d'echappement comportant une enveloppe delimitant une passage de circulation des gazInfo
- Publication number
- EP1495214A1 EP1495214A1 EP03740579A EP03740579A EP1495214A1 EP 1495214 A1 EP1495214 A1 EP 1495214A1 EP 03740579 A EP03740579 A EP 03740579A EP 03740579 A EP03740579 A EP 03740579A EP 1495214 A1 EP1495214 A1 EP 1495214A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover piece
- continuous wall
- exhaust volume
- wall
- cover
- 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
Links
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 ; 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
-
- 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
- F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/089—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using two or more expansion chambers in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
- F01N1/20—Silencing apparatus characterised by method of silencing by using movable parts having oscillating or vibrating movement
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
-
- 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
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
-
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/20—Methods or apparatus for fitting, inserting or repairing different elements by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof
-
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
Definitions
- Exhaust volume comprising an envelope delimiting a gas circulation passage
- the present invention relates to an exhaust volume of the type comprising an outer envelope delimiting a gas circulation passage and comprising at least one continuous wall along which is attached at least one cover piece, the or each cover piece extending only over a reduced marked region of said continuous wall ,.
- the exhaust silencer or any other exhaust volume fitted to the exhaust line to which the engine is connected, is a significant source of acoustic radiation generating noise pollution for the environment.
- the external envelope of the exhaust volume is formed, over the entire external surface of the exhaust volume, by two superposed layers between which is interposed a sound insulating material such than ceramic fibers or a wire mesh.
- the use of a laminated material to form the envelope of the exhaust pipe leads to an increase in the weight of the latter and makes its manufacture relatively complex.
- the invention aims to provide an exhaust volume to reduce noise emissions, and whose mass is reduced.
- the invention relates to an exhaust volume of the aforementioned type, characterized in that the dimensions of the cover piece and the connection between the cover piece and the continuous wall are such that, for at least one frequency of excitation of the exhaust volume between 200 Hz and 4 kHz, the cover piece and the continuous wall vibrate with a phase shift greater than 90 °.
- the exhaust volume includes one or more of the following characteristics: - The total surface of the continuous wall covered by the or each cover piece is between 10% and 50% of the total surface of said continuous wall;
- the dimensions of the cover piece and the connection between the cover piece and the continuous wall are such that, for at least one excitation frequency of the exhaust volume between 200 Hz and 4 kHz, the cover piece and the continuous wall vibrate in phase opposition;
- the dimensions of the cover piece and the connection between the cover piece and the continuous wall are such that, for at least one excitation frequency of the exhaust volume between 200 Hz and 4 kHz, the cover piece and the continuous wall vibrate with a phase shift between 90 ° and 270 ° for at least 20% of the frequencies;
- Said continuous wall is an essentially smooth free wall;
- a single cover piece is attached to a continuous wall, and said marked region along which said cover piece is attached extends substantially at the center of the development of said continuous wall;
- - Said outer envelope comprises at least two half-shells joined together according to a joint, and said cover piece is joined to the two half-shells in at least two regions of said joint; - Said cover piece is welded at least partially along its periphery to said wall;
- Said continuous wall has a bowl in which said cover piece is confined; - It includes a damping material interposed between the wall and the cover piece; and
- the subject of the invention is also the use, in an exhaust volume, to reduce the noise emissions produced by the exhaust volume comprising an external envelope delimiting a gas circulation passage, and comprising at least one continuous wall, at least one cover piece attached along the continuous wall, the or each cover piece extending only over a reduced region of said continuous wall, the dimensions of the cover piece and the connection between the piece of cover and the continuous wall being such that, for at least one excitation frequency of the exhaust volume between 200 Hz and 4 kHz, the cover part and the continuous wall vibrate with a phase shift greater than 90 °.
- FIG. 1 is a schematic perspective view of a first embodiment of an exhaust silencer according to the invention
- FIG. 2 is a curve showing, in a silencer according to the invention, the phase difference between a wall and an attached cover piece as a function of the frequency;
- FIG. 3 is a schematic view of the experimental measurement installation to obtain the curve of Figure 2;
- FIG. 4 is a schematic perspective view of a second embodiment of a silencer according to the invention.
- - Figure 5 is a cross-sectional view of a third embodiment of a silencer according to the invention.
- - Figure 6 is a sectional view of a fourth embodiment of a silencer according to the invention.
- the exhaust volume shown in FIG. 1 constitutes an exhaust silencer intended to be placed in the current part of a exhaust line. It comprises an outer casing 10 delimiting a passage for circulation of the exhaust gases. It has an exhaust gas inlet tube 12 and an exhaust gas outlet tube 14.
- the casing 12 has a generally cylindrical side wall of elliptical section formed by a ferrule 16 consisting of a single sheet wound on itself. The opposite longitudinal edges of the ferrule 16 are connected to each other by a longitudinal weld 18.
- the ferrule 16 is closed by a transverse end wall 20, 22 commonly called “outer cup".
- the end walls 20 and 22 are crossed, respectively, by the inlet 12 and outlet 14 tubes.
- transverse walls 24 delimiting, along the length of the exhaust volume, several adjacent chambers. These chambers communicate with each other through suitable openings or conduits.
- the transverse walls are generally called "interior cups”.
- a single intermediate wall 24 is provided inside the exhaust volume.
- the areas of the shell 16 defined between the cups form continuous walls of the exhaust volume.
- the ranges of the cups defined between the periphery of the cup and the or each passage formed in the cup form continuous walls.
- continuous wall designates any wall formed of a single sheet or panel without this wall being formed of two elements joined side by side.
- these continuous walls are essentially smooth free walls.
- the expression “essentially smooth free wall” designates any convex area of a wall of the exhaust volume which is devoid of protruding and recessed cover profiles made of material and which is not directly attached to a another element of the exhaust volume or resting on it.
- at least one continuous wall of the exhaust volume is present.
- the wall is free and essentially smooth.
- the total surface covered by the or each cover piece is then between 10 and 50% of the total surface of the essentially smooth free wall.
- the envelope 10 delimiting the gas circulation passage comprises, for example on the section of the lateral surface 16 comprised between the end wall 20 and the intermediate wall 24, two pads 26A, 26B constituting such cover parts.
- the pellets 26A, 26B are placed side by side on the external surface of the shell 16 delimiting the side wall of the exhaust silencer.
- the pellets 26A, 26B are arranged on the free and smooth section delimited on the ferrule 16 between the end wall 20 and the intermediate wall 24, so that the isobarycenter of the pellets 26A,
- 26B is substantially coincident with the isobarycenter of the developed of the free and smooth section delimited on the ferrule.
- the expression "developed" of a left wall designates the planar surface obtained by bringing the left wall along a plane.
- Each patch 26A, 26B has for example an elliptical shape. It consists of a sheet metal plate shaped to match the shape of the ferrule 16. Each patch is welded at its periphery to the envelope of the exhaust volume. The connection between each patch 26A, 26B and the surface of the envelope is produced for example by a set of separate welds distributed at the periphery of the patch. The total area of the free section of the shell 16 covered by the pads 26A, 26B is for example substantially equal to 30% of the total area of this section.
- cover parts 30, 32 are also joined locally against the external surface of the end walls 20 and 22.
- These cover parts are formed of metal pellets whose surface is much smaller than the surface of the transverse walls 20, 22. These pads are welded at their periphery against the end walls, substantially at the center of the main smooth area defined by each end wall.
- a cover piece 34 of reduced size is attached to one face of the intermediate transverse wall 24.
- This cover piece consists, as before, of a metal patch formed in a sheet. It is welded against a surface of the intermediate wall substantially at the center of a smooth surface thereof. According to the invention, the dimensions of each cover piece 26A,
- 26B, 30, 32, 34 and the connection between the covering part and the associated continuous wall are such that, for at least one excitation frequency of the exhaust volume between 200 Hz and 4 kHz, the covering part and the associated continuous wall vibrate with a phase shift greater than 90 °.
- this phase shift is greater than 90 ° for more than 20% of the excitation frequencies from 200 Hz to 4 kHz.
- the dimensions of the cover piece and the conditions of connection thereof are such that, in the frequency range considered, the cover piece and the continuous wall vibrate in phase opposition for at least one frequency of excitation.
- each cover piece can be welded to the continuous wall at an interior point on its surface denoted 35 for the piece 26A in FIG. 1.
- FIG. 2 illustrates the evolution of the phase difference between the covering part and the continuous wall to which it is applied at a point considered on this surface as a function of the excitation frequency.
- the curve R represents the phase difference measured at a point between the two points of the continuous wall in the absence of a covering piece. This curve R constitutes a reference curve.
- Curve C represents the phase difference, measured at corresponding points in the exhaust volume, between the cover piece and the continuous wall on which the cover piece is attached.
- This installation comprises an excitation box 36 inside which is arranged a set of sixteen speakers 37 connected to an electric excitation source 38 suitable for applying a sinusoidal excitation signal of variable frequencies to the loudspeakers. speakers 37.
- the internal walls of the box 36 are covered with an acoustically insulating material 39.
- One of the walls of the box arranged opposite the emission face of the loudspeakers has an opening 40 for the passage of an acoustic excitation signal .
- the sample 41 to be tested is secured to the box 36 opposite the opening 40.
- This sample consists of a continuous wall 41A of the silencer on which a covering piece is attached or not.
- the cover piece 41 B is placed when it is present on the face of the sample turned away from the sixteen speakers.
- a mechanical accelerometer 42 applied at a given point of the wall.
- the accelerometer is connected to a device for recording and processing the signal 43.
- a laser vibrometer 44 which is also connected to the device 43.
- the device 43 is adapted to determine, by combination of the signals received from the sensors 42 and 44, the phase difference between the corresponding points of the continuous wall 41 A and of the covering part 41 B. It can be seen in FIG. 2 that, in the absence of a covering part, the two faces of the continuous wall vibrate with an essentially zero phase shift and less than 45 °, whatever the excitation frequency included in a range from 150 kHz to 1.2 kHz.
- the dimensions of the covering part and its mode of connection to the continuous wall are such that, for at least one frequency, and even for many frequencies, the phase shift between the covering part and the continuous wall is greater than 90 °.
- the cover piece and the continuous wall are in phase opposition for several frequencies.
- the phase shift between the covering part and the continuous wall is between 90 ° and 270 ° for at least 20% of the excitation frequencies. It can be seen that, since the covering part and the continuous wall vibrate with a substantial phase shift, the effects of the vibrations of the continuous wall and of the covering part tend to cancel each other out, so that the assembly consisting of the continuous wall and of the cover piece is generally stationary, thereby reducing harmful noise emissions. Under these conditions, the cover piece provides damping of the vibrations produced by the assembly consisting of the continuous wall and the associated cover piece.
- cover piece (s) of reduced size on the walls of the exhaust volume makes it possible to limit the noise pollution without significantly increasing the weight of the exhaust volume.
- FIG 4 is shown another alternative embodiment of an exhaust silencer according to the invention.
- the envelope 50 is delimited by two half-shells 52, 54 in the form of bowls joined to one another along their edges.
- the two half-shells 52, 54 are crimped along a peripheral crimping line 56.
- a cover piece 70 is attached locally to the external surface of the shell 52 substantially in the middle part thereof.
- This cover piece is formed by a metal strip arranged transversely to the length of the exhaust volume.
- the metal strip is shaped to conform to the shape of the half-shell 52 and thus apply exactly to the external surface of the latter.
- Each end of the room cover 70 is received and set in the peripheral seal 56 formed between the half-shells 52 and 54.
- the cover part 70 attached to the half-shell 52 in its middle part, dampens the vibrations of the half-shell.
- the noise pollution produced during the circulation of the exhaust gases in the exhaust volume is reduced, this for a slight increase in the exhaust volume.
- FIGS. 5 and 6 two alternative embodiments of cover parts shown along a wall of an exhaust volume are shown.
- This exhaust volume consists, as in Figure 4, of two half-shells 52, 54 crimped to one another. However, this could be formed by a ferrule wound and welded longitudinally.
- a cover piece 80 formed of a metal plate, is received and confined within a bowl 82 formed in the wall of the exhaust volume.
- this wall is the main surface denoted 84 of the half-shell 52.
- the bowl 82 opens onto the external surface of the envelope of the exhaust volume. It has a flat bottom 86 against which the covering piece 80 is kept applied. The bottom 86 is offset relative to the main surface 84 of the wall towards the inside of the exhaust volume.
- the bowl 84 has flanges 88 extending above the contour of the plate 80 forming the cover piece. These flanges 88 are formed by deformation of the wall 84. The flanges 88 ensure that the plate 80 is retained and immobilized, the latter being clamped between the flanges 88 and the bottom 86 of the bowl.
- the covering part 80 is immobilized in all directions relative to the wall 84 while being retained in the bowl 82.
- a bowl 82 is first formed in the wall 84 by plastic deformation thereof with a suitable tool.
- the plate forming the cover piece 80 is then placed in the bowl 82 bearing on the bottom 86.
- the flanges 88 are then pushed above the contour of the cover piece 80 by plastic deformation of the wall 84 using a suitable tool.
- a cover piece 90 is attached by welding to the outer surface 92 of the half-shell 52.
- a damping material 94 is disposed between the surface of the wall 92 and the cover piece 90.
- This shock-absorbing material consists for example of a metal mesh or of an elastic polymeric material resistant to heat.
- the cover piece 90 is welded at its periphery according to a continuous weld or a set of disjoint welds on the wall 92.
- the presence of the damping material 94 disposed between the facing surfaces of the cover piece 90 and the wall 92 ensures that the cover piece and the wall are kept away from one another outside the periphery of the cover piece 90.
- the cover piece provides vibration damping.
- the cover piece is advantageously formed from a metal sheet or a polymer material the thickness of which is between 0.4 and 1.2 mm and preferably substantially equal to 0.6 mm. This thickness is for example substantially equal to that of the wall on which the cover piece is attached.
- the total area of the cover piece or pieces depends on the area and the nature of the wall on which it is attached. This surface is preferably between 10 and 50% of the total surface of the free wall to which it is applied. It is advantageously between 20 and 40% of this total area. Thus, its surface is between 2 cm 2 and 2500 cm 2 for a motor vehicle exhaust volume.
- a reduced-size cover piece can advantageously be attached to any wall of any type of exhaust volume. In particular, such a cover piece can be secured to the surface of a convergent or divergent section formed at the end of an exhaust volume containing a catalytic purification member or a particle filter.
- a cover piece can advantageously also be attached to a continuous wall having a cover rib obtained by deformation of the wall. The cover piece is then attached for example straddling the rib.
- the cover piece is preferably formed from polymers.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0204640A FR2838476B1 (fr) | 2002-04-12 | 2002-04-12 | Volume d'echappement comportant une enveloppe delimitant un passage de circulation des gaz |
FR0204640 | 2002-04-12 | ||
PCT/FR2003/001106 WO2003087547A1 (fr) | 2002-04-12 | 2003-04-08 | Volume d'echappement comportant une enveloppe delimitant un passage de circulation des gaz |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1495214A1 true EP1495214A1 (fr) | 2005-01-12 |
EP1495214B1 EP1495214B1 (fr) | 2006-03-22 |
Family
ID=28459808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03740579A Expired - Lifetime EP1495214B1 (fr) | 2002-04-12 | 2003-04-08 | Volume d'echappement comportant une enveloppe delimitant une passage de circulation des gaz |
Country Status (7)
Country | Link |
---|---|
US (1) | US20050205352A1 (fr) |
EP (1) | EP1495214B1 (fr) |
AT (1) | ATE321194T1 (fr) |
AU (1) | AU2003262170A1 (fr) |
DE (1) | DE60304187T2 (fr) |
FR (1) | FR2838476B1 (fr) |
WO (1) | WO2003087547A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070157598A1 (en) * | 2005-08-22 | 2007-07-12 | Gagov Atanas | Plastic components formed from 3D blow molding |
US9267407B2 (en) * | 2012-07-11 | 2016-02-23 | South Dakota Board Of Regents | Exhaust system air filtration housing |
CN104995378B (zh) * | 2013-02-12 | 2019-06-25 | 佛吉亚排放控制技术美国有限公司 | 具有共振阻尼的车辆排气系统 |
JP6517566B2 (ja) * | 2015-03-31 | 2019-05-22 | 伊藤超短波株式会社 | 医療用吸引装置 |
EP3118430B1 (fr) * | 2015-04-20 | 2017-12-20 | Faurecia Systèmes d'Echappement | Volume d'échappement avec une enveloppe principale et une enveloppe partielle, procédé de fabrication d'un tel volume |
CN109253340B (zh) * | 2018-10-31 | 2024-04-19 | 中国船舶重工集团公司第七一九研究所 | 一种频率可调且可承压的共振式水消声器 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3923118A (en) * | 1972-06-19 | 1975-12-02 | Us Navy | Acoustic baffle for deep submergence |
US4700806A (en) * | 1986-11-25 | 1987-10-20 | Ap Industries, Inc. | Stamp formed muffler |
US4860851A (en) * | 1987-01-27 | 1989-08-29 | Raychem Corporation | Dimensionally-recoverable damping article |
IT1211848B (it) * | 1987-10-12 | 1989-11-03 | Roma A | Dispositivo silenziatore per scarichi di motori e simili,ad interferenza acustica |
JP2585095Y2 (ja) * | 1991-02-04 | 1998-11-11 | 日野自動車工業株式会社 | 自動車部品の騒音防止装置 |
FI90588C (fi) * | 1991-03-18 | 1994-02-25 | Valmet Paper Machinery Inc | Reaktiivinen äänenvaimennin, etenkin paperitehtaiden ilmakanaviin |
DE19702172A1 (de) * | 1997-01-23 | 1998-08-13 | Trinova Aeroquip Gmbh | Vorrichtung zur Geräuschdämmung für schwingungsfähige Bestandteile eines Kraftfahrzeug-Hydrauliksystems |
DE29708861U1 (de) * | 1997-05-20 | 1997-07-17 | Emitec Gesellschaft für Emissionstechnologie mbH, 53797 Lohmar | Katalysator-Trägerkörper mit Außensicke |
US6068082A (en) * | 1997-11-21 | 2000-05-30 | D'amico, Jr.; John | Muffler packing method and apparatus |
DE50110583D1 (de) * | 2000-04-14 | 2006-09-14 | Eberspaecher J Gmbh & Co | Abgas-Schalldämpfer in Mehrkammerbauweise |
FR2812343B1 (fr) * | 2000-07-31 | 2003-01-31 | Ecia Equip Composants Ind Auto | Cloison transversale pour volume d'echappement et volume d'echappement la comportant |
JP2004285895A (ja) * | 2003-03-20 | 2004-10-14 | Toyoda Gosei Co Ltd | 吸気装置 |
-
2002
- 2002-04-12 FR FR0204640A patent/FR2838476B1/fr not_active Expired - Lifetime
-
2003
- 2003-04-08 US US10/510,743 patent/US20050205352A1/en not_active Abandoned
- 2003-04-08 EP EP03740579A patent/EP1495214B1/fr not_active Expired - Lifetime
- 2003-04-08 AU AU2003262170A patent/AU2003262170A1/en not_active Abandoned
- 2003-04-08 DE DE60304187T patent/DE60304187T2/de not_active Expired - Fee Related
- 2003-04-08 AT AT03740579T patent/ATE321194T1/de not_active IP Right Cessation
- 2003-04-08 WO PCT/FR2003/001106 patent/WO2003087547A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO03087547A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2003262170A1 (en) | 2003-10-27 |
WO2003087547A1 (fr) | 2003-10-23 |
ATE321194T1 (de) | 2006-04-15 |
DE60304187D1 (de) | 2006-05-11 |
FR2838476B1 (fr) | 2005-06-24 |
FR2838476A1 (fr) | 2003-10-17 |
DE60304187T2 (de) | 2006-12-28 |
EP1495214B1 (fr) | 2006-03-22 |
US20050205352A1 (en) | 2005-09-22 |
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