EP1507071A1 - Abgasschalldämpfer - Google Patents
Abgasschalldämpfer Download PDFInfo
- Publication number
- EP1507071A1 EP1507071A1 EP04019054A EP04019054A EP1507071A1 EP 1507071 A1 EP1507071 A1 EP 1507071A1 EP 04019054 A EP04019054 A EP 04019054A EP 04019054 A EP04019054 A EP 04019054A EP 1507071 A1 EP1507071 A1 EP 1507071A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- microperforated
- housing
- silencer according
- exhaust silencer
- tube
- 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
- 230000003584 silencer Effects 0.000 title claims abstract description 25
- 238000013016 damping Methods 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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 gas flow passages
-
- 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
-
- 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
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
-
- 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
- F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/02—Tubes being perforated
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/02—Tubes being perforated
- F01N2470/04—Tubes being perforated characterised by shape, disposition or dimensions of apertures
Definitions
- the present invention relates to an exhaust muffler for the Internal combustion engine of a motor vehicle with an exhaust gas inlet and a Exhaust gas outlet having, gas-tight housing and at least one gas flowed through Sound-absorbing function chamber, also called damping chamber.
- absorption silencers include at least one with a fibrous sound absorbing substance filled absorption chamber, wherein the absorption chamber generally via a perforated wall, in particular a perforated pipe is coupled to the exhaust stream.
- the present invention is directed to an exhaust muffler of of the type specified at the outset, although it has the advantages of conventional Absorption silencer in particular with regard to the damping characteristic has, does without fibrous Schallschluckstoff.
- the silencer according to the invention is free from any fibrous sound-absorbing material.
- the present invention takes advantage of the finding that micro-perforated material is suitable for effective sound attenuation in the case of the use of a suitable material under the conditions prevailing in exhaust systems of internal combustion engines, which are characterized in particular by high flow velocities, high pulsations and high temperatures.
- the pore size is a maximum of 2.0 mm 2 .
- Preferred pore sizes are between 0.15 mm 2 and 1.5 mm 2 .
- the degree of perforation was found to be from 1 to 3% and the equivalent hole diameter from 0.4 to 1.5 mm.
- the micro-perforated flat material used in the context of the present invention apart from the material, essentially correspond to the microperforated flat materials known as such in connection with other applications, in particular so-called microperforated films.
- the micro-perforated flat material used in the context of the present invention consists of a metallic material, aluminum in particular, namely AL99.5H24, and heat-resistant stainless steel, namely 1.4301 or 1.4828, being considered.
- microperforated sheet a microperforated film with a wall thickness between 0.4 mm and 0.8 mm.
- the microperforated Flat material in particular such in the form of a microperforated film, for Formation of a multi-layered microperforated wall flat on one stiff, perforated support wall is applied and possibly firmly connected to this.
- the exhaust muffler according to the invention at least one intermediate floor defining two functional chambers on which comprises microperforated sheet. It is particularly favorable if the intermediate shelf in question, with a total thickness of 10 to 20 mm a corrugated or folded microperforated carrier film and two on both sides on these applied microperforated coating films. To this Way are in the space between the two coating films through the corrugated or folded microperforated carrier film limited individual chambers defined by the microperforations of the three foils to the two adjacent functional chambers are coupled.
- At least one exhaust-carrying pipe of the exhaust silencer according to the invention at least partially a microperforated wall.
- the tube a corrugated or folded microperforated carrier film and two on both sides applied to this microperforated coating films.
- the tube runs with the at least partially perforated wall through the housing.
- the tube should be essentially over the entire, through the housing be running through micro-perforated track and thus over the entire Length sound-absorbing effect. At least 90% of the length of the case located pipe section is microperforated.
- the housing extends in accordance with the preferred embodiment substantially concentric with the tube, which has proven to be particularly advantageous.
- the ratio of the outer diameter of the housing to the outer diameter of the tube which passes through the housing is in the range of 2.5 up to and including 4, in which context preferably pipe wall thicknesses are provided between 0.4 to 1.5 mm.
- the housing at least two radial spaced-apart, between the inner sides the housing and the lateral surface of the tube extending shelves are provided.
- the ratio of the distance of the front sides of the housing to the distance of the first intermediate floor of the nearer end face is in Range of 1.8 to 2.2, and the ratio of the distance of the end faces of the Housing to the distance of the second shelf from his closer Front side is in the range of 2.8 to 3.2.
- the pipe and / or the intermediate floor should have a degree of perforation from 1 to 3%. This ratio has also proved to be proved advantageous.
- the preferred wall thickness of the tube or shelves should be in This relationship preferably in the range of 0.4 to 1.5 mm and the equivalent hole diameter between 0.4 and 1.5 mm.
- At least one functional chamber of the exhaust muffler at least partially lined with microperforated flat material.
- the microperforated Flat material can in particular with a more or less large Be arranged distance from the gas-tight housing wall.
- At least one functional chamber has a filling of microperforated Flat material on.
- the inventive Silencer in the frequency range below about 100 Hz compared to conventional absorption silencers of the same dimensions achieve improved damping behavior.
- a particularly favorable damping behavior arises when the filling of microperforated sheet several mutually substantially parallel, spaced from each other arranged layers comprises. The distance between the two is individual layers of filling on the order of 12 times and 80 times, ideally between 15 times and 40 times the thickness of the microperforated sheet.
- such Fill depending on the installation conditions, from a continuous strip wound microperforated sheet or folded.
- Any cross-section tubes of microperforated sheet in particular, the tubes of microperforated flat material can surround an inner, exhaust-carrying, perforated pipe.
- the damping behavior of the exhaust muffler according to the invention can continue to affect favorably when the microperforated sheet Having pores of different shapes and / or different sizes; this contributes to a particularly broadband damping that the exhaust mufflers according to the present invention over such absorption silencers makes particularly superior to the state of the art.
- Suitable pore forms include circles, segments, ovals, Trapeze, slits and the like. In terms of pore sizes have become for non-round pores widths between 0.05 mm and 0.15 mm and lengths between 0.5 mm and 1.5 mm proved to be particularly favorable.
- the illustrated in Fig. 1 muffler comprises a tube 1 and a cylindrical housing 2, which in turn consists of two end floors 3 and 4 as well a jacket 5 consists.
- the housing 2 concentric tube 1 comprises a Exhaust inlet nozzle 6, an exhaust gas outlet nozzle 7 and, between the two End shelves 3 and 4 arranged, a perforated, preferably microperforated Middle section 8.
- the exhaust gas pipe 1 is at the Function chamber 10 coupled, which the central portion 8 of the exhaust gas Pipe 1 surrounds and through this, the two end floors 3 and 4 as well the jacket 5 of the housing is limited.
- an insert 11 is arranged in the chamber 10. This consists of two concentric with spaced apart tubes 12 and 13 from a microperforated film.
- the tube 1 in the area inside the housing and the Tubes 12, 13 can z. B. from a wound or folded strip be formed microperforated sheet.
- the exhaust muffler illustrated in FIG. 2 comprises a housing 14, an exhaust gas inlet pipe 15 and an exhaust gas outlet pipe 16.
- the interior of the housing 14 is defined by three shelves 17, 18 and 19 in four chambers 20, 21, 22 and 23 divided.
- the exhaust gas inlet pipe 15 opens into the as Helmholtz chamber executed chamber 23. It is about a hole 24 or a microperforated Section further coupled to the chamber 23.
- the Exhaust outlet pipe 16 opens into the chamber 21; over the hole 25 or the microperforated portion, it is further to the chamber 22 acoustically coupled.
- the intermediate floors 17 and 18 are, as shown in the detail view, each composed of three micro-perforated films, by on both sides a zigzag folded, microperforated carrier sheet 26 microperforated Coating foils 27 and 28 are applied.
- the in Fig. 2 illustrated exhaust muffler for example modified so be that the intermediate floors comprise more microperforated films, For example, another folded and another flat carrier film.
- a unit comprising a zigzag folded or corrugated one Carrier film and a coating film applied thereto can be otherwise, As can be deduced from the above explanations, also to the lining the housing and / or for application to pipes, z. B. the tubes 1, 12, 13, 15, 16, and / or use gas-impermeable intermediate floors.
- FIG. 3 shows an exhaust silencer in the form of a concentric tubular resonator shown.
- the tube 1 is over almost the entire distance in Inside the housing 2 microperforated on the entire outer circumference.
- Of the microperforated portion of the tube 1 in the interior of the housing 2 is at least 90% of the distance 1 of the end faces 31, 32 of the housing 2.
- Im Interior of the housing 2 are two spaced, radially extending and between the inside of the housing 2 and the outside of the Jacket surface of the tube 1 extending shelves 33, 34 is provided.
- These Intermediate floors 33, 34 are on the one hand on the housing 2 and on the other hand, on the pipe first attached.
- the tube 1 has optionally in the area of the connection of the Intermediate floors 33, 34 no microperforations.
- the ratio of the distance l of the two end faces 31, 32 to the distance l 1 of the intermediate bottom 33 from the end face 31 which is close to it should be in the range from 1.8 to 2.2.
- the distance l of the end faces 31, 32 in relation to the distance l 2 from the intermediate wall 34 to the end face 32 should be in the range of 2.8 to 3.2.
- the ratio of the outer diameter d a of the housing 2 to the outer diameter d i of the tube 1 in the region inside the housing 2 should be in the range of 2.5 to 4.
- the wall thicknesses of the pipe and the shelves should be in the range of 0.4 to 1.5 mm, the degree of perforation in the range of 1 to 3%. These Ratios are, as I said, particularly advantageous.
- the equivalent hole diameter is in the range of 0.4 to 1.5 mm.
- the Microperforations usually do not result in circular but slit or crescent-shaped holes in the wall. The cross-sectional area of this from the circle deviating holes is converted to an equivalent hole diameter.
- the intermediate floors 33, 34 can be made of microperforated flat material, similar to that shown in Figure 2, but they do not have to. Also shelves without flow-through openings already achieve relatively good sound absorption values.
- the tube 1 in the area inside the housing consists e.g. from wrapped Flat material, whereby a multiple winding is possible.
- a multiple winding is possible.
- the microperforated part of the tube 1 can be attached to a non-perforated pipe section, which protrudes from the housing 2, be welded.
- the shelves 33, 34 may e.g. by crimping or another plastic deformation on the tube 1 and / or the housing 2 to be attached. Also a welding or radial clamping connection is of course conceivable.
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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)
- Aviation & Aerospace Engineering (AREA)
- Fluid Mechanics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Claims (18)
- Abgasschalldämpfer für den Verbrennungsmotor eines Kraftfahrzeugs, umfassend ein einen Abgaseintritt und einen Abgasaustritt aufweisendes, gasdichtes Gehäuse (2; 14) und mindestens eine gasdurchströmte schalldämpfende Funktionskammer (10; 20, 21, 22 23),
dadurch gekennzeichnet, daß im Inneren des Gehäuses (2; 14) mindestens eine Mikroperforierungen aufweisende, dem pulsierenden Abgasstrom ausgesetzte Wand vorgesehen ist. - Abgasschalldämpfer nach Anspruch 1,
dadurch gekennzeichnet, daß er eine mehrlagig aufgebaute mikroperforierte Wand aufweist, die eine steife gelochte Stützwand und mindestens ein an dieser flächig anliegendes mikroperforiertes Flachmaterial in Form einer mikroperforierten Folie umfaßt. - Abgasschalldämpfer nach Anspruch 1 oder Anspruch 2,
dadurch gekennzeichnet, daß mindestens ein zwei Funktionskammern (20, 21, 22) definierender Zwischenboden (17, 18) mikroperforiertes Flachmaterial umfaßt. - Abgasschalldämpfer nach Anspruch 3,
dadurch gekennzeichnet, daß der Zwischenboden eine gewellte oder gefaltete mikroperforierte Trägerfolie (26) und zwei beiderseits auf diese aufgebrachte mikroperforierte Beschichtungsfolien (27, 28) umfaßt. - Abgasschalldämpfer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß mindestens ein gasführendes Rohr wenigstens abschnittsweise eine mikroperforierte Wand hat. - Abgasschalldämpfer nach Anspruch 5,
dadurch gekennzeichnet, daß das Rohr wenigstens abschnittsweise aus einer gewellten oder gefalteten mikroperforierten Trägerfolie und zwei beiderseits auf diese aufgebrachte mikroperforierte Beschichtungsfolien besteht. - Abgasschalldämpfer nach Anspruch 5 oder 6,
dadurch gekennzeichnet, daß das Rohr (1) durch das Gehäuse (2) hindurchläuft. - Abgasschalldämpfer nach Anspruch 7,
dadurch gekennzeichnet, daß das Rohr (1) im Wesentlichen über fast die gesamte, durch das Gehäuse (2) hindurchlaufende Strecke mikroperforiert ist. - Abgasschalldämpfer nach Anspruch 7 oder 8,
dadurch gekennzeichnet, daß das Gehäuse (2) im Wesentlichen konzentrisch zum Rohr (1) verläuft. - Abgasschalldämpfer nach Anspruch 9,
dadurch gekennzeichnet, daß das Verhältnis des Außendurchmessers (da) des Gehäuses (2) zum Außendurchmesser (di) des Rohres (1), das durch das Gehäuse (2) hindurchläuft, im Bereich von 2,5 bis 4 liegt. - Abgasschalldämpfer nach einem der Ansprüche 7 bis 10,
dadurch gekennzeichnet, daß im Gehäuse (2) wenigstens ein radialer, sich zwischen der Innenseite des Gehäuses (2) und der Mantelfläche des Rohres (1) erstreckender Zwischenboden (33, 34) angeordnet ist, wobei das Verhältnis des Abstandes (l) der Stirnseiten (31, 32) des Gehäuses (2) zum Abstand (l1, l2) des Zwischenbodens (33, 34) von der ihm nahen Stirnseite (31, 32) im Bereich von 1,8 bis 2,2 oder im Bereich von 2,8 bis 3,2 liegt. - Abgasschalldämpfer nach Anspruch 11,
dadurch gekennzeichnet, daß im Gehäuse (2) wenigstens zwei voneinander beabstandete radiale, sich zwischen der Innenseite des Gehäuses (2) und der Mantelfläche des Rohres (1) erstreckende Zwischenböden (33, 34) angeordnet sind, wobei das Verhältnis des Abstandes (l) der Stirnseiten (31, 32) des Gehäuses (2) zu dem Abstand (l1) eines Zwischenbodens (33) zu seiner ihm nahen Stirnseite (31) im Bereich von 1,8 bis 2,2 und das Verhältnis des Abstandes (l) der Stirnseiten (31, 32) des Gehäuses (2) zum Abstand (l2) des weiteren Zwischenbodens (34) von der ihm nahen Stirnseite (32) im Bereich von 2,5 bis 3,2 liegt. - Abgasschalldämpfer nach einem der Ansprüche 5 bis 12,
dadurch gekennzeichnet, daß das Rohr (1) und/oder der Zwischenboden (33, 34) einen Perforationsgrad (Verhältnis gelochte Fläche/Gesamtfläche) im Bereich von 1 bis 3 % aufweist. - Abgasschalldämpfer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß mindestens eine Funktionskammer (10) zumindest bereichsweise mit mikroperforiertem Flachmaterial ausgekleidet ist oder eine Füllung (11) aus mikroperforiertem Flachmaterial aufweist. - Abgasschalldämpfer nach Anspruch 14,
dadurch gekennzeichnet, daß die Füllung (11) aus mikroperforiertem Flachmaterial mehrere zueinander im wesentlichen parallele Schichten umfaßt. - Abgasschalldämpfer nach Anspruch 15,
dadurch gekennzeichnet, daß der Abstand zwischen den einzelnen Schichten zwischen dem 12fachen und dem 80fachen, vorzugsweise dem 15 bis 40fachen Wert der Dicke des mikroperforierten Flachmaterials beträgt. - Abgasschalldämpfer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Wand durch einen gewickelten oder gefalteten Streifen aus mikroperforiertem Flachmaterial gebildet ist. - Abgasschalldämpfer nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß mehrere im wesentlichen zueinander konzentrische Rohre (12, 13) aus mikroperforiertem Flachmaterial vorgesehen sind.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14190957.2A EP2851526B1 (de) | 2003-08-11 | 2004-08-11 | Abgasschalldämpfer |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10337110 | 2003-08-11 | ||
DE2003137110 DE10337110A1 (de) | 2003-08-11 | 2003-08-11 | Abgasschalldämpfer |
DE10337111 | 2003-08-11 | ||
DE2003137111 DE10337111A1 (de) | 2003-08-11 | 2003-08-11 | Schalldämpfungsvorrichtung für pulsierendes Heißgas |
Related Child Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08000648A Division-Into EP1953354A1 (de) | 2003-08-11 | 2004-08-11 | Abgasschalldämpfer |
EP08000648A Division EP1953354A1 (de) | 2003-08-11 | 2004-08-11 | Abgasschalldämpfer |
EP14190957.2A Division EP2851526B1 (de) | 2003-08-11 | 2004-08-11 | Abgasschalldämpfer |
EP14190957.2A Division-Into EP2851526B1 (de) | 2003-08-11 | 2004-08-11 | Abgasschalldämpfer |
Publications (4)
Publication Number | Publication Date |
---|---|
EP1507071A1 true EP1507071A1 (de) | 2005-02-16 |
EP1507071B1 EP1507071B1 (de) | 2016-07-13 |
EP1507071B8 EP1507071B8 (de) | 2016-09-21 |
EP1507071B2 EP1507071B2 (de) | 2019-10-16 |
Family
ID=33566035
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14190957.2A Not-in-force EP2851526B1 (de) | 2003-08-11 | 2004-08-11 | Abgasschalldämpfer |
EP04019054.8A Active EP1507071B2 (de) | 2003-08-11 | 2004-08-11 | Abgasschalldämpfer |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14190957.2A Not-in-force EP2851526B1 (de) | 2003-08-11 | 2004-08-11 | Abgasschalldämpfer |
Country Status (1)
Country | Link |
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EP (2) | EP2851526B1 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006020155A1 (de) * | 2005-12-15 | 2007-06-21 | Friedrich Boysen Gmbh & Co. Kg | Abgasanlage für Brennkraftmaschinen |
DE102005054397C5 (de) * | 2005-11-15 | 2010-02-11 | Westa-Holding Gmbh & Co. Kg | Rohrschalldämpfer mit Mikroöffnungen |
GB2485881A (en) * | 2010-11-25 | 2012-05-30 | Gardner Denver Gmbh | Blower and Silencer Arrangement |
WO2016040431A1 (en) * | 2014-09-09 | 2016-03-17 | 3M Innovative Properties Company | Acoustic device |
WO2017012839A1 (en) * | 2015-07-23 | 2017-01-26 | Mann+Hummel Gmbh | Silencer and vehicle engine including same |
US9970340B2 (en) | 2013-02-12 | 2018-05-15 | Faurecia Emissions Control Technologies, Usa, Llc | Vehicle exhaust system with resonance damping |
CN110847980A (zh) * | 2019-11-19 | 2020-02-28 | 上海钟音环保设备有限公司 | 一种管道多层微穿孔板消声器及其加工方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019005858A1 (en) * | 2017-06-28 | 2019-01-03 | 3M Innovative Properties Company | MICROPERFORATED CONDUIT |
Citations (6)
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US4267899A (en) * | 1979-08-31 | 1981-05-19 | Donaldson Company, Inc. | Muffler assembly |
WO1994024382A1 (de) * | 1993-04-20 | 1994-10-27 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Unterdecke |
DE29710491U1 (de) * | 1997-02-14 | 1998-03-12 | Westa Holding Gmbh & Co Kg | Schalldämpfer |
DE10022902A1 (de) * | 1999-08-11 | 2001-03-08 | Hp Chem Pelzer Res & Dev Ltd | Bauteil mit hoher absorptiver Wirkung über einem breiten Frequenzbereich |
WO2002089110A1 (de) * | 2001-04-27 | 2002-11-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Schalldämpfer |
US20040074694A1 (en) * | 2001-02-09 | 2004-04-22 | Bjorn Heed | Silencer and exhaust gas system comprising a silencer |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005054397C5 (de) * | 2005-11-15 | 2010-02-11 | Westa-Holding Gmbh & Co. Kg | Rohrschalldämpfer mit Mikroöffnungen |
DE102006020155A1 (de) * | 2005-12-15 | 2007-06-21 | Friedrich Boysen Gmbh & Co. Kg | Abgasanlage für Brennkraftmaschinen |
GB2485881A (en) * | 2010-11-25 | 2012-05-30 | Gardner Denver Gmbh | Blower and Silencer Arrangement |
US8511427B2 (en) | 2010-11-25 | 2013-08-20 | Gardner Denver Deutschland Gmbh | Blower arrangement |
EP3467276A1 (de) * | 2013-02-12 | 2019-04-10 | Faurecia Emissions Control Technologies, USA, LLC | Fahrzeugabgasanlage mit resonanzdämpfung |
US9970340B2 (en) | 2013-02-12 | 2018-05-15 | Faurecia Emissions Control Technologies, Usa, Llc | Vehicle exhaust system with resonance damping |
CN106715849A (zh) * | 2014-09-09 | 2017-05-24 | 3M创新有限公司 | 声学装置 |
WO2016040431A1 (en) * | 2014-09-09 | 2016-03-17 | 3M Innovative Properties Company | Acoustic device |
US10352210B2 (en) | 2014-09-09 | 2019-07-16 | 3M Innovative Properties Company | Acoustic device |
CN106715849B (zh) * | 2014-09-09 | 2019-10-22 | 3M创新有限公司 | 声学装置及使用其来衰减气载声能的方法 |
WO2017012839A1 (en) * | 2015-07-23 | 2017-01-26 | Mann+Hummel Gmbh | Silencer and vehicle engine including same |
US10907517B2 (en) | 2015-07-23 | 2021-02-02 | Mann+Hummel Gmbh | Silencer and vehicle engine including same |
CN110847980A (zh) * | 2019-11-19 | 2020-02-28 | 上海钟音环保设备有限公司 | 一种管道多层微穿孔板消声器及其加工方法 |
Also Published As
Publication number | Publication date |
---|---|
EP2851526B1 (de) | 2018-05-23 |
EP1507071B8 (de) | 2016-09-21 |
EP2851526A1 (de) | 2015-03-25 |
EP1507071B1 (de) | 2016-07-13 |
EP1507071B2 (de) | 2019-10-16 |
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