EP0794324B1 - Kombinierter Reflexions-Absorptions-Abgas-Schalldämpfer in Mehrkammer-bauweise - Google Patents
Kombinierter Reflexions-Absorptions-Abgas-Schalldämpfer in Mehrkammer-bauweise Download PDFInfo
- Publication number
- EP0794324B1 EP0794324B1 EP97102548A EP97102548A EP0794324B1 EP 0794324 B1 EP0794324 B1 EP 0794324B1 EP 97102548 A EP97102548 A EP 97102548A EP 97102548 A EP97102548 A EP 97102548A EP 0794324 B1 EP0794324 B1 EP 0794324B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- exhaust
- reflection
- absorption
- silencer according
- 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.)
- Expired - Lifetime
Links
Images
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
- F01N1/24—Silencing apparatus characterised by method of silencing by using sound-absorbing materials
-
- 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
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
-
- 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
- F01N13/14—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 having thermal insulation
-
- 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
- F01N2310/00—Selection of sound absorbing or insulating material
- F01N2310/04—Metallic wool, e.g. steel wool, copper wool or the like
-
- 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
-
- 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
-
- 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
- F01N2470/06—Tubes being formed by assembly of stamped 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/30—Tubes with restrictions, i.e. venturi or the like, e.g. for sucking air or measuring mass flow
Definitions
- the invention relates to a combined reflection-absorption exhaust gas silencer in multi-chamber design, in particular for heavy commercial vehicles, with a reflection chamber and an absorption chamber.
- Reflection silencers cause both a reflection of the Sound waves to the sound source as well as a multiplication of sound points (e.g. through perforated or slotted eaves), that bring about improvement through interference.
- Reflection dampers have a particularly low frequency Area high effectiveness. Have proven themselves mainly so-called three-way dampers with a variety of variants. As a rule, two to seven are acoustic Links (e.g. cross-sectional jumps, deflections, row and Branch resonants and built-in intermediate pipes) available. The location of the muffler in the pipe determines the essential the goodness of damping. Is the reflection damper on The end of the pipe is the length of the end pipe important for the overall damping.
- acoustic Links e.g. cross-sectional jumps, deflections, row and Branch resonants and built-in intermediate pipes
- the outer jacket directly comes into contact with the exhaust gas, very high surface temperatures arise - especially because of silencers to reduce air resistance more often in the underbody group can be integrated.
- the outer jacket can give off heat to the underbody group and with an insulation layer (e.g. made of mineral or Ceramic fibers).
- absorption silencers consist of a perforated one Pipe through which the exhaust gas is directed and that of a chamber lined with sound-absorbing material is surrounded.
- the sound waves penetrate the round hole, Slot hole or slot bridge perforation of the exhaust gas Inner tube in the sound absorbing material.
- absorption silencer cause broadband attenuation and usually cause less pressure loss as a comparable reflection silencer.
- the sound absorbent must be resistant to thermal and chemical influences be, but also resistant to high-frequency exhaust pressure pulsation and mechanical vibration. As sound absorbent becomes mineral or metal wool or a combination of both used. Basalt wool is usually used, occasionally in combination with stainless steel wool.
- perforated eaves or Venturi nozzles may be provided. The latter will be venturi used against low-frequency sound components.
- the invention has for its object a combined Absorption-reflection exhaust muffler of the aforementioned Art to create, which is simple and especially as a 78 dB attenuator for heavy commercial vehicles a 6- and 8-cylinder engine is suitable.
- the task is solved by a silencer in the Claim 1 specified Art.
- the silencer is advantageously further developed by Features according to claims 2 to 16.
- the essence of the invention is in a generic silencer seen in the fact that a substantially T-shaped Exhaust gas inlet pipe with a jacket-side exhaust gas inlet and a T-shaped exhaust branch is provided, the one end in the absorption chamber and the other end lies in the reflection chamber, the front ends the T-shaped exhaust branch and closed on the jacket side Outflow openings both on the absorption chamber side are also formed on the reflection chamber side.
- Such a T-shaped exhaust gas inlet pipe has one Generic exhaust silencer especially after DE 93 08 419 U is not, but rather an end face sloping inlet pipe, which is in the central reflection chamber ends by two lateral absorption chambers is included.
- the first ones assigned to the absorption chamber are preferred jacket-side outlet openings smaller than that of the reflection chamber assigned second jacket-side outlet openings.
- the first and second jacket-side outlet openings can preferably facing away from the exhaust gas inlet Shell side of the exhaust branch can be formed.
- a particularly advantageous development of the invention features characterized in that an exhaust gas outlet pipe is provided is, the inlet is arranged in the reflection chamber and is at least partially through the absorption chamber extends, the exhaust gas outlet pipe in the absorption chamber associated shell section further outflow openings contains.
- the inlet of the exhaust gas outlet pipe is expedient provided with a venturi nozzle or outflow nozzle.
- the one associated with the absorption chamber Section of the exhaust gas outlet pipe is bent by approximately 180 ° Pipe area, which the further exhaust gas outlets contains.
- the muffler is preferably used as a 2-chamber pot a single outer jacket and a radial shelf formed which the interior of the muffler in the Absorption chamber and the reflection chamber divided, where on the reflection chamber side on the outer jacket and on the front An outer edge is integrated into an edge absorption.
- the edge absorption of the front outer bottom is particularly executed in the form of a package arrangement in sandwich construction, consisting of a perforated inner floor, a Stainless steel wool fitting, a structure-borne sound floor, an insulating mat in two layers and a pot-like outer bottom part.
- the edge absorption of the outer shell of the silencer is preferably one on the inside of the reflection chamber of the outer jacket arranged perforated inner cage with an intermediate one Insulating mat that is not just for good Structure-borne noise insulation, but also for good thermal Insulation of the outer jacket ensures.
- An exhaust gas inlet pipe with an inlet is preferred provided, which is through the outer shell of the silencer extends, especially on the side of Absorption chamber.
- the exhaust gas outlet pipe has in particular an outlet, which is also due to the outer shell of the silencer extends, but especially on the side of the Reflection chamber.
- Exhaust inlet pipe and exhaust pipe are special at least partially sheet metal parts made of half shells be assembled and welded together can.
- the area of the exhaust gas outlet pipe assigned to the absorption chamber can at least partially deal with a location Stainless steel wool.
- An exhaust pipe preferably opens into the reflection chamber on.
- the result of the invention is a combined reflection / absorption silencer with sound absorbing elements created a high damping with regard to muzzle sound and structure-borne noise at a low back pressure level has.
- the silencer system is particularly suitable for heavy commercial vehicles.
- the 2-chamber damper has an integrated edge absorption on the outer jacket and on the front Outer floor on the reflection chamber side.
- the Silencer entry is via a T-shaped outflow of the inner inlet pipe, which has a perforation to the absorption chamber and via an outflow shower is coupled to the reflection chamber.
- the silencer outlet takes place via an outflow nozzle from the reflection chamber, a coupling to the absorption chamber through a perforation is provided.
- the combined reflection-absorption exhaust silencer shown 20 is in a multi-chamber construction as a so-called 2-chamber pot. It has a single one in cross-section essentially oval to rectangular outer jacket 16, wherein a radial intermediate floor 17 is provided, the the interior of the muffler 20 in a drawing right reflection chamber 1 and a left absorption chamber according to the drawing 2 divided.
- the latter absorption chamber 2 is - apart from the interior of the still to be described exhaust-carrying pipes there - with a sound-absorbing substance 21 filled out.
- the exhaust gas inlet is located here on the side of the absorption chamber 2, during the Exhaust outlet located on the side of the reflection chamber 1 is.
- the silencer 20 has on the exhaust gas inlet side a one or more part essentially T-shaped exhaust gas inlet pipe 4 with a jacket side Exhaust inlet and a T-shaped exhaust branch, the one end in the absorption chamber 2 and the other end thereof is arranged in the reflection chamber 1.
- the front Ends of the T-shaped exhaust branch are closed, and it has the straight line in the axial direction of the silencer extending part of the exhaust branch on the jacket side Outflow openings 5, 6 both on the absorption chamber side as well as on the reflection chamber side.
- the first jacket-side outflow openings 5 on the absorption chamber side have a smaller diameter than the second jacket-side outflow openings 6 on the reflection chamber side.
- the silencer 20 On the exit side, the silencer 20 has an on or multi-part exhaust gas outlet pipe 15 with an input side Venturi nozzle 7 parallel to the outflow openings 5, 6 containing part of the T-shaped exhaust branch of the exhaust gas inlet pipe 4.
- the Venturi nozzle 7 has its inlet on the reflection chamber side, extends through the conical extension Wall of the radial intermediate floor 17 in the absorption chamber 2 and there goes into a 180 ° bend section of the exhaust gas outlet pipe 15 over.
- the 180 ° arc section located in the absorption chamber 2 there are further outlet openings on the jacket side 8 approximately in the size of the first discharge openings 5, wherein the 180 ° arc section in the absorption chamber 2 at least in the area of the further outflow openings 8 with one layer is wrapped in stainless steel wool.
- the further jacket-side outflow openings 8 are in groups along a radial flow cross-section, thus essentially star-shaped according to the drawing in plan view arranged.
- the latter number of openings 8 contains in particular also each flow cross section of the T-shaped exhaust branch in the area of equally sized openings 5, where the pipe diameter of the T-shaped exhaust branch preferably the same pipe diameter as the 180 ° bend section having.
- the exhaust gas outlet pipe extends 15 parallel to the Venturi nozzle 7 back into the reflection chamber 1 back and finally ends after a curve on the outer jacket or outside of the outer jacket 16 for a connection to an end pipe that is not of interest here the exhaust system.
- the edge absorption on the front outer bottom 18 is in particular in the form of a package arrangement in sandwich construction realized, the package from a perforated inner floor 9, a stainless steel wool fitting 10, a structure-borne soundboard 19, an insulating mat in two layers 11, 12 and one pot-like outer bottom part 13.
- the edge absorption on the outer jacket 16 is perforated Achieved inner cage 14, which is concentric with the outer jacket on the inside of the outer shell of the reflection chamber 16 is arranged at a distance, one in the space Insulating mat 3 is provided.
- Exhaust gas inlet pipe 4 and the exhaust gas outlet pipe 15 are at least partially formed as sheet metal parts, wherein the sheet metal parts are half shells that are assembled and are welded together.
- An opening (not shown) opens into the reflection chamber 1 Exhaust pipe.
Description
Claims (16)
- Kombinierter Reflexions-Absorptions-Abgas-Schalldämpfer (20) in Mehrkammerbauweise, insbesondere für schwere Nutzfahrzeuge, mit einer Reflexionskammer (1) und einer Absorptionskammer (2),
gekennzeichnet durch
ein im wesentlichen T-förmiges Abgas-Eintrittsrohr (4) mit einem mantelseitigen Abgas-Einlaß und einer T-förmigen Abgas-Aufzweigung, deren eines Ende in der Absorptionskammer (2) und deren anderes Ende in der Reflexionskammer (1) angeordnet ist, wobei die stirnseitigen Enden der T-förmigen Abgas-Aufzweigung geschlossen und mantelseitige Ausströmöffnungen (5, 6) in der Abgas-Aufzweigung sowohl auf der Absorptionskammerseite als auch auf der Reflexionskammerseite ausgebildet sind. - Schalldämpfer nach Anspruch 1,
dadurch gekennzeichnet, daß die der Absorptionskammer (2) zugeordneten ersten mantelseitigen Ausströmöffnungen (5) kleiner als die der Reflexionskammer (1) zugeordneten zweiten mantelseitigen Ausströmöffnungen (6) sind. - Schalldämpfer nach Anspruch 2 oder 3,
dadurch gekennzeichnet, daß die ersten und zweiten mantelseitigen Ausströmöffnungen (5, 6) auf der dem Abgas-Einlaß vorzugsweise abgewandten Mantelseite der Abgas-Abzweigung angeordnet sind. - Schalldämpfer nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß ein Abgas-Austrittsrohr (15) vorgesehen ist, dessen Einlaß in der Reflexionskammer (1) angeordnet ist und sich zumindest teilweise durch die Absorptionskammer (2) erstreckt, wobei das Abgas-Austrittsrohr (15) im der Absorptionskammer (2) zugeordneten Mantelabschnitt weitere Ausströmöffnungen (8) aufweist. - Schalldämpfer nach Anspruch 4,
dadurch gekennzeichnet, daß der Einlaß des Abgas-Austrittsrohrs mit einer Venturidüse (7) versehen ist. - Schalldämpfer nach Anspruch 4 oder 5,
dadurch gekennzeichnet, daß der Auslaß des Abgas-Austrittsrohrs (15) auf der Seite der Reflexionskammer (1) liegt. - Schalldämpfer nach Anspruch 6,
dadurch gekennzeichnet, daß der der Absorptionskammer (2) zugeordnete Abschnitt des Abgas-Austrittsrohrs (15) einen um ca. 180° gebogenen Rohrbereich umfaßt, welcher die weiteren Abgas-Ausströmöffnungen (8) enthält. - Schalldämpfer nach einem der Ansprüche 1 bis 7,
gekennzeichnet durch
einen 2-Kammer-Topf mit einem einzigen Außenmantel (16) und einem radialen Zwischenboden (17), welcher den Innenraum des Schalldämpfers (20) in die Absorptionskammer (2) und die Reflexionskammer (1) unterteilt, wobei auf der Reflexionskammerseite am Außenmantel (16) und am stirnseitigen Außenboden (18) eine Randabsorption integriert ausgebildet ist. - Schalldämpfer nach Anspruch 8,
dadurch gekennzeichnet, daß der stirnseitige Außenboden (18) eine Paketanordnung in Sandwichbauweise ist, bestehend aus einem perforierten Innenboden (9), einem Edelstahlwolle-Formstück (10), einem Körperschallboden (19), einer Isoliermatte in zwei Lagen (11, 12) und einem topfartigen Außenbodenteil (13). - Schalldämpfer nach Anspruch 8 oder 9,
dadurch gekennzeichnet, daß auf der Reflexionskammer-Innenseite des Außenmantels (16) ein perforierter Innenkäfig (14) mit einer zwischengeordneten Isoliermatte (3) zur Körperschalldämmung und thermischen Isolation des Außenmantels (16) vorgesehen ist. - Schalldämpfer nach einem der Ansprüche 8 bis 10,
dadurch gekennzeichnet; daß das im wesentliche T-förmige Abgas-Eintrittsrohr (4) einen außenmantelseitigen Abgas-Eingang aufweist. - Schalldämpfer nach einem der Ansprüche 8 bis 11,
dadurch gekennzeichnet, daß das Abgas-Austrittsrohr (15) einen außenmantelseitigen Abgas-Auslaß aufweist. - Schalldämpfer nach einem der Ansprüche 1 bis 12,
dadurch gekennzeichnet, daß das Abgas-Eintrittsrohr (4) und das Abgas-Austrittsrohr (15) zumindest teilweise Blechformteile sind. - Schalldämpfer nach Anspruch 13,
dadurch gekennzeichnet, daß die Blechformteile aus Halbschalen zusammengesetzt und verschweißt sind. - Schalldämpfer nach einem der Ansprüche 1 bis 14,
dadurch gekennzeichnet, daß der der Absorptionskammer (2) zugeordnete Bereich des Abgas-Austrittsrohres (15) zumindest teilweise mit einer Lage aus Edelstahlwolle umwickelt ist. - Schalldämpfer nach einem der Ansprüche 1 bis 15,
dadurch gekennzeichnet, daß in die Reflexionskammer (1) ein Abluftröhrchen einmündet.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19608273A DE19608273A1 (de) | 1996-03-05 | 1996-03-05 | Kombinierter Reflexions-Absorptions-Abgas-Schalldämpfer in Mehrkammerbauweise |
DE19608273 | 1996-03-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0794324A2 EP0794324A2 (de) | 1997-09-10 |
EP0794324A3 EP0794324A3 (de) | 1998-05-06 |
EP0794324B1 true EP0794324B1 (de) | 2002-08-28 |
Family
ID=7787151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97102548A Expired - Lifetime EP0794324B1 (de) | 1996-03-05 | 1997-02-18 | Kombinierter Reflexions-Absorptions-Abgas-Schalldämpfer in Mehrkammer-bauweise |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0794324B1 (de) |
DE (2) | DE19608273A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7934580B2 (en) | 2006-04-12 | 2011-05-03 | Ocv Intellectual Capital, Llc | Long fiber thermoplastic composite muffler system |
US7942237B2 (en) | 2006-04-12 | 2011-05-17 | Ocv Intellectual Capital, Llc | Long fiber thermoplastic composite muffler system with integrated reflective chamber |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7730996B2 (en) | 2006-04-12 | 2010-06-08 | Ocv Intellectual Capital, Llc | Long fiber thermoplastic composite muffler system with integrated crash management |
DE102007011455A1 (de) * | 2007-03-09 | 2008-09-11 | Festo Ag & Co. | Druckluft-Schalldämpfer für pneumatische Anwendungen |
AT510788B1 (de) * | 2010-10-28 | 2012-10-15 | Avl List Gmbh | Abgasschalldämpferanordnung |
CN109386505B (zh) | 2017-08-09 | 2022-02-11 | 开利公司 | 用于制冷装置中的消音器以及制冷装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE866744C (de) * | 1950-11-07 | 1953-02-12 | Eberspaecher J | Schallabsorber fuer speziell im Auspuff von Zweitaktern enthaltene Knackgeraeusche extrem steiler Druckfront |
GB1446553A (en) * | 1972-12-06 | 1976-08-18 | Nicoll W L G | Mufflers |
DE9308419U1 (de) * | 1993-06-05 | 1994-10-13 | Roth Technik Gmbh | Schalldämpfer für vorzugsweise gasförmige Medien |
-
1996
- 1996-03-05 DE DE19608273A patent/DE19608273A1/de not_active Withdrawn
-
1997
- 1997-02-18 EP EP97102548A patent/EP0794324B1/de not_active Expired - Lifetime
- 1997-02-18 DE DE59708027T patent/DE59708027D1/de not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7934580B2 (en) | 2006-04-12 | 2011-05-03 | Ocv Intellectual Capital, Llc | Long fiber thermoplastic composite muffler system |
US7942237B2 (en) | 2006-04-12 | 2011-05-17 | Ocv Intellectual Capital, Llc | Long fiber thermoplastic composite muffler system with integrated reflective chamber |
CN101578430B (zh) * | 2006-12-14 | 2011-10-12 | Ocv智识资本有限责任公司 | 具有一体的反射腔的长纤维热塑复合消声器系统 |
Also Published As
Publication number | Publication date |
---|---|
DE59708027D1 (de) | 2002-10-02 |
EP0794324A2 (de) | 1997-09-10 |
EP0794324A3 (de) | 1998-05-06 |
DE19608273A1 (de) | 1997-09-11 |
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