EP1510666A2 - Resonator - Google Patents
Resonator Download PDFInfo
- Publication number
- EP1510666A2 EP1510666A2 EP04101237A EP04101237A EP1510666A2 EP 1510666 A2 EP1510666 A2 EP 1510666A2 EP 04101237 A EP04101237 A EP 04101237A EP 04101237 A EP04101237 A EP 04101237A EP 1510666 A2 EP1510666 A2 EP 1510666A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- resonator
- neck
- line
- longitudinal direction
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
- F01N1/023—Helmholtz resonators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
- F02M35/1261—Helmholtz resonators
-
- 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 exhaust gas passages, pipes or tubes
- F01N2470/14—Plurality of outlet tubes, e.g. in parallel or with different length
-
- 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 exhaust gas passages, pipes or tubes
- F01N2470/16—Plurality of inlet tubes, e.g. discharging into different chambers
Definitions
- the present invention relates to a resonator for treatment of airborne sound, resulting in a gas pipe spreads.
- Gas-carrying lines in which airborne sound propagates come in many areas of technology, for example in an exhaust system or in an intake system of an internal combustion engine, especially in a motor vehicle.
- Other Applications include, for example, cables connected to a fan or connected to a pump.
- the resonator volume and the resonator neck can be so interpret that for a predetermined frequency or for a predetermined frequency band resonance effects arise, which affect the airborne sound in the pipe. Usually is a damping of the respective frequency or the respective Frequency band achieved.
- the resonator is usually a so-called "Helmholtz resonator".
- Helmholtz resonator works in principle as a Spring-mass oscillator, wherein the spring by the resonator volume caged gas volume is formed while the Mass formed by the gas volume contained in the resonator throat is.
- a typical Helmholtz resonator is usually so attached to the gas-carrying line that the resonator neck protrudes transversely from the line and so the side of the line arranged resonator volume connects to the line.
- the resonator neck protrudes transversely from the line and so the side of the line arranged resonator volume connects to the line.
- the present invention deals with the problem for a resonator of the type mentioned an improved Embodiment, which in particular simplifies build the resonator compact.
- the present invention is based on the general idea the resonator neck so that he along Although its longitudinal direction has a constant internal cross-sectional area has, however, a varying internal cross-sectional geometry having.
- the resonator neck with respect to its internal cross-sectional geometry adapt to almost any installation situation, while the constant internal cross-sectional area for it ensures that the resonator neck despite varying internal cross-sectional area its function essentially undisturbed can fulfill.
- the present invention uses the knowledge that the resonator neck functions as a "mass" in the spring-mass vibration system regardless of the course of the internal cross-sectional geometry along its longitudinal direction substantially can fully maintain as long as along its longitudinal direction, the inner cross-sectional area of the Resonatorhalses is kept constant.
- the teaching of the invention for the design of the resonator neck means in practice a huge simplification for the design or adaptation of the resonator to individual installation situations and applications.
- Varying internal cross-sectional geometries lead in conjunction with varying internal cross-sectional areas to complex interactions that an exact calculation of the effect of the respective resonator difficult or with the resources currently available make it almost impossible.
- the invention has recognized that the influences of a variable internal cross-sectional geometry on the Resonator Bonus only a reduced influence have, if the inner cross-sectional area along the Longitudinal direction of the resonator remains constant. In that regard, can the calculations of the resonator effect for the interpretation of the respective resonator are considerably simplified. simultaneously the calculations agree with the realizable ones Resonator effects match much better.
- resonator neck in its longitudinal direction at least partially extending along the outside of the conduit.
- the resonator hardly builds up across the line, so that only little space is needed in this direction.
- a section of Outside of the conduit part of a wall of the Resonatorhalses form, wherein this wall is the inner cross section the resonator neck along its longitudinal direction transverse to Limited longitudinal direction of the Resonatorhalses.
- the outside of the pipe is partly for training the resonator neck used, which on the one hand increased Functionality achieved for the outside of the pipe while on the other hand by this measure the compact Construction of the resonator neck is supported, as a Wandungsabêt in the area of the co-used outside section can be omitted.
- a part of the wall of the resonator neck can in a further development be formed by a shell with to the line protruding outer edges to the outside of the line attached and attached to it.
- a shell Can be easily made and attached to the pipe become.
- the resonator neck particularly easy to the geometry adapted to the line, which is a particularly compact Construction supported.
- the resonator volume be formed in a housing which the line in a longitudinal section wrapped.
- the resonator neck is then inside arranged this case and connects the line within this housing with the resonator volume.
- the housing envelops both a section of the Line as well as the resonator neck and encloses moreover the resonator volume.
- This construction also uses cleverly the available space for the formation of the resonator. In this embodiment, it was simultaneously recognized that the position in which the resonator neck with the resonator volume communicates within the resonator volume almost freely selectable.
- a resonator according to the invention has 1 a housing 2, which here assembled from two half-shells 3 and 4 is.
- the housing 2 envelops the one here shown longitudinal section of a line 5, the gas guide serves.
- the housing 2 encloses a resonator volume 6, wherein this resonator volume 6 thus between a Inside 7 of the housing 2 and an outside 8 of the line is trained. Accordingly, the resonator volume envelops 6 also the longitudinal section of the line shown here 5th
- the resonator 1 is also equipped with a resonator neck 9, the one communicating link between the Resonator volume 6 and the line 5 and an interior 10th the line 5 creates.
- this resonator neck 9 now designed so that he along his, through a dashed line represented longitudinal direction 11th a constant internal cross-sectional area and a varying Internal cross-sectional geometry has.
- gas-carrying line 5 is at the here shown embodiment to a part of an otherwise not shown exhaust system of an internal combustion engine, which may be arranged in particular in a motor vehicle can. Likewise, it may be at the line 5 to a component act a suction of the internal combustion engine or any other gas-carrying line, in which can spread airborne noise during operation. Furthermore It can also be at the line 5 to any other act gas-carrying line in which simultaneously in operation Airborne noise spreads; for example, in a turbine, a compressor, a pump, a blower or a another machine.
- the airborne sound propagating in the line 5 is over decoupled from the resonator neck 9 and can thereby be treated especially damped or otherwise affected become.
- a main application is the damping a predetermined frequency or a predetermined frequency band, so that the resonator 1 works as a muffler.
- the resonator 1 so to design that the sound of the in line 5 changed airborne sound in a desired manner is called, "Sound Design”.
- Such a Helmholtz resonator 1 can be targeted to Attenuation of a certain frequency or a certain Frequency bands can be designed and then this frequency or effectively attenuate this frequency band.
- the construction specification according to the invention may have varying internal cross-sectional geometries, as long as the inner cross-sectional area along the longitudinal direction 11 remains substantially constant, it allows the resonator 1 very compact build.
- the resonator neck 9 as shown here To arrange the embodiment so that it is in his Longitudinal direction 11 partially or completely along the Outside 8 of the line 5 extends. In other words, the spatial course of the resonator neck 9 is on the outer contour the line 5 adapted. This adjustment takes place under the proviso that the inner cross-sectional area of the resonator neck 9 along its longitudinal direction 11 is constant remains.
- a shell 12 is used, the one Part of a wall 13 of the resonator neck 9 forms.
- These Wall 13 defines or limits the internal cross section of the Resonator neck 9 along the longitudinal direction 11 of the Resonatorhalses 9 transversely to the longitudinal direction 11 of the resonator neck.
- the shell 12 has two lateral outer edges 14, from which only one is visible in the section of FIG. 1. These Outer edges 14 are from the rest of the shell 12 to 5 line down. The outer edges 14 are on the outer contour of the line 5, thereby enabling the shell 12 at its outer edges 14 to the outside 8 of the conduit fifth to be set.
- the shell 12 is attached to the conduit 5.
- connection of the shell 12 on the line 5 is expedient along the outer edges 14, for example by means of a corresponding weld.
- the shell 12 is for guidance 5 open. This has the consequence that another part the wall 13 of the resonator neck 9 through a section 15 of the outside 8 of the line 5 is formed. In this Section 15 of the outside 8 is the case covered by the shell 12 within the outer edges 14 Outside section 15.
- such Shell 12 are dispensed with.
- the relevant Section of the wall 13 e.g. by a suitable shaping of the housing 2 and the respective half-shell 3 or 4 educated.
- the contouring of the housing 2 or the respective half-shell 3 or 4 is carried out so the inner side 7 in a resonator neck 9 associated section directly a section of the wall 13th of the resonator neck 9 forms.
- the housing 2 on its inner side 7 to the outside 8 of the line fifth extend, so touch this.
- the wall 13 of the resonator neck 9 can then only through the outer side section 15 of the line 5 and by a corresponding Section of the inside 7 of the housing 2 are formed.
- the housing 2 and the line 5 at least insert a bridge, each from the inside 7 of the housing 2 to the outside 8 of the line 5 extends, ie to the inside 7 and the outside 8 connects.
- This bridge or the respective The bridge then forms a lateral boundary of the resonator neck 9.
- a Resonatorhals 9 facing side of the respective Stegs forms a section of the wall 13.
- a Such web can, for example, in a plan view accordingly Fig. 2 have a U-shape and can then substantially the outer edges 14 projecting towards the conduit 5 correspond to the shell 12.
- Such an embodiment, in which the housing 2 indirectly via at least one such web or is directly connected to the line 5, can then be used when between line 5 and the housing 2 similar temperatures or similar thermal expansions occur.
- the embodiment, in which the housing 2 is connected directly to the line 5 and thus manages without shell 12 and without webs can be to produce very cheaply.
- the resonator neck 9 at one end with respect to its longitudinal direction 11 transversely or laterally connected to the line 5.
- the connection opening 16 thus creates a connection between the resonator neck 9 and the line 5, with respect to a indicated by an arrow flow direction 18 of the line 5 is arranged transversely or laterally.
- the connection opening 16 or the volumes communicating therewith in the resonator neck 9 and in the housing 2 thus have substantially no influence on the gas flow in the line 5.
- connection opening 17 substantially lies in a plane that is perpendicular to the section the longitudinal direction 11 extends through this connection opening 17 runs.
- Fig. 2 is for better representability to the viewer facing half-shell 3 omitted.
- the line 5 at least two sub-lines 19, 20, 21, 22, which communicate with each other in a node 23.
- the internal combustion engine has two separate Exhaust strands, which are separated by separate sub-lines, z. B. via the partial lines 19, 20, the resonator 1 is supplied become.
- the two sub-lines 19, 20 or the two exhaust lines communicating with each other connected so that a single resonator 1 is sufficient to a certain frequency / a specific frequency band within the exhaust system to dampen simultaneously in both exhaust lines.
- the two exhaust lines again in two separate sub-lines, for example in the sub-lines 21 and 22, continued.
- Fig. 2 is by the leadership of the Sub-lines 19, 20, 21, 22 each between two sub-lines 19, 20 and 21, 22 a gap 24 and 25, respectively.
- the resonator neck extends 9 at least partially in this gap 25.
- a longitudinal dimension 26 of the housing 2 is larger than a width dimension 27 and a height dimension 28.
- the length 26 about twice as large as the Width 27, while the width 27 is about twice as large as the height 28.
- the top view of FIG. 2 illustrates that the resonator 1 according to the invention only slightly requires more installation space than the exhaust system in Area of the node 23. It is noteworthy that in Housing 2 a relatively large resonator volume 6 included is, so that with the help of the resonator 1 in particular can also attenuate lower frequencies or frequency bands.
- the embodiment shown here shows that it is the inventive Design regulation for the resonator neck 9 allows the resonator neck 9 and thus the entire resonator 1 optimally adapted to the existing installation space, wherein the existing installation space in particular any can have three-dimensional contour. This allows existing spaces are optimally used.
- FIGS. 1 and 2 show a perspective view of the resonator neck 9 of the embodiment according to FIGS. 1 and 2.
- the visible part of the shell 12 with a solid line while a portion 29 of the resonator neck 9 shown by the broken line through the outer side portion 15 of the line 5 is limited.
- the Resonatorhalses 9 exemplarily seven inner cross-sections 30a to 30g marked with broken lines and next to it, ie outside the resonator neck 9 again shown by solid lines. in this connection is easily recognizable that the individual inner cross sections 30a to 30g along the longitudinal direction 11 of the resonator neck 9 clearly different internal cross-sectional geometries possess, with their associated internal cross-sectional areas according to the invention are the same.
- the variant shown here is only an example and clarifies like the design rule according to the invention the adaptation the resonator neck 9 and thus the resonator housing 2 to any available installation space with almost any three-dimensional shape, to thereby for the entire resonator 1 a compact, adapted to the respective mounting situation design to achieve.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Description
- Fig. 1
- einen Längsschnitt durch einen erfindungsgemäßen Resonator,
- Fig. 2
- eine Draufsicht auf den Resonator entsprechend einem Pfeil II in Fig. 1, und
- Fig. 3
- eine perspektivische Ansicht auf einen Resonatorhals des Resonators der Fig. 1 und 2.
Claims (15)
- Resonator zur Behandlung von Luftschall, der sich in einer gasführenden Leitung (5) ausbreitet,mit einem Resonatorhals (9), der die Leitung (5) mit einem Resonatorvolumen (6) kommunizierend verbindet,wobei der Resonatorhals (9) entlang seiner Längsrichtung (11) eine konstante Innenquerschnittsfläche aufweist,wobei der Resonatorhals (9) entlang seiner Längsrichtung (11) eine variierende Innenquerschnittsgeometrie aufweist.
- Resonator nach Anspruch 1,
dadurch gekennzeichnet, dass sich der Resonatorhals (9) in seiner Längsrichtung (11) zumindest teilweise entlang einer Außenseite (8) der Leitung (5) erstreckt, - Resonator nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass ein Abschnitt (15) einer Außenseite (8) der Leitung (5) einen Teil einer Wandung (13) des Resonatorhalses (9) bildet, die den Innenquerschnitt (30) des Resonatorhalses (9) entlang dessen Längsrichtung (11) quer zur Längsrichtung (11) des Resonatorhalses (9) begrenzt. - Resonator nach Anspruch 3,
dadurch gekennzeichnet, dass ein Teil der Wandung (13) des Resonatorhalses (9) durch eine Schale (12) gebildet ist, die mit zur Leitung (5) hin abstehenden Außenrändern (14) an die Außenseite (8) der Leitung (5) angesetzt und daran befestigt ist. - Resonator nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass der Resonatorhals (9) bezüglich seiner Längsrichtung (11) quer oder seitlich an die Leitung (5) angeschlossen ist. - Resonator nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass der Resonatorhals (9) in seiner Längsrichtung (11) an das Resonatorvolumen (6) angeschlossen ist. - Resonator nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet,dass das Resonatorvolumen (6) in einem die Leitung (5) in einem Längsabschnitt umhüllenden Gehäuse (2) ausgebildet ist,dass der Resonatorhals (9) innerhalb des Gehäuses (2) angeordnet ist und die Leitung (5) mit dem Resonatorvolumen (6) verbindet. - Resonator nach Anspruch 7,
dadurch gekennzeichnet, dass ein Abschnitt einer Innenseite (7) des Gehäuses (2) einen Teil einer Wandung (13) des Resonatorhalses (9) bildet, die den Innenquerschnitt (39) des Resonatorhalses (9) entlang dessen Längsrichtung (11) quer zur Längsrichtung (11) des Resonatorhalses (9) begrenzt. - Resonator nach den Ansprüchen 3 und 8,
dadurch gekennzeichnet,dass wenigstens ein Steg vorgesehen ist, der sich von der Innenseite (7) des Gehäuses (2) bis zur Außenseite (8) der Leitung (5) erstreckt und der an einer dem Resonatorhals (9) zugewandten Seite einen Abschnitt der Wandung (13) des Resonatorhalses (9) bildet, oderdass die Wandung (13) des Resonatorhalses (9) ausschließlich durch den Abschnitt der Innenseite (7) des Gehäuses (2) und den Abschnitt (15) der Außenseite (8) der Leitung (5) gebildet ist. - Resonator nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet,dass die Leitung (5) zumindest zwei Teilleitungen (19, 20, 21, 22) aufweist, die in einem Knoten (23) miteinander kommunizieren,dass der Resonatorhals (9) an den Knoten (23) angeschlossen ist. - Resonator nach Anspruch 10,
dadurch gekennzeichnet, dass sich der Resonatorhals (9) in einer Lücke (25) erstreckt, die am Knoten (23) zwischen zwei Teilleitungen (21, 22) ausgebildet ist. - Resonator nach Anspruch 7 sowie nach Anspruch 10 oder 11,
dadurch gekennzeichnet, dass das Gehäuse (2) den Knoten (23) umhüllt. - Resonator zumindest nach Anspruch 7,
dadurch gekennzeichnet, dass das Gehäuse (2) flach ist. - Resonator zumindest nach Anspruch 7,
dadurch gekennzeichnet, dass die Verbindung zwischen Resonatorhals (9) und Leitung (5) bezüglich der Strömungsrichtung (18) in der Leitung (5) seitlich oder quer angeordnet ist. - Resonator nach einem der Ansprüche 1 bis 14,
dadurch gekennzeichnet, dass die gasführende Leitung (5) ein Bestandteil einer Abgasanlage einer Brennkraftmaschine, insbesondere in einem Kraftfahrzeug, ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10339811A DE10339811B4 (de) | 2003-08-27 | 2003-08-27 | Resonator zur Reduzierung von Luftschall |
| DE10339811 | 2003-08-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1510666A2 true EP1510666A2 (de) | 2005-03-02 |
| EP1510666A3 EP1510666A3 (de) | 2005-12-07 |
Family
ID=34089251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04101237A Withdrawn EP1510666A3 (de) | 2003-08-27 | 2004-03-25 | Resonator |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1510666A3 (de) |
| DE (1) | DE10339811B4 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008027290A1 (de) * | 2008-06-06 | 2009-12-10 | J. Eberspächer GmbH & Co. KG | Schalldämpfer für eine Abgasanlage |
| DE102010062049A1 (de) * | 2010-11-26 | 2012-05-31 | J. Eberspächer GmbH & Co. KG | Schalldämpfer |
| DE102014114254A1 (de) * | 2014-09-30 | 2016-03-31 | Eberspächer Exhaust Technology GmbH & Co. KG | Passiver Schalldämpfer mit Helmholtz-Resonator für mehrflutige Abgasanlagen |
| US20220018272A1 (en) * | 2020-07-15 | 2022-01-20 | Faurecia Emissions Control Technologies, Germany Gmbh | Muffler of an exhaust system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4700806A (en) * | 1986-11-25 | 1987-10-20 | Ap Industries, Inc. | Stamp formed muffler |
| DE4228356C2 (de) * | 1992-08-26 | 1995-10-19 | Daimler Benz Aerospace Ag | Hohlraumresonator zur Lärmreduzierung |
| DE19855708B4 (de) * | 1998-12-03 | 2009-04-30 | Denker, Dietrich, Prof. Dr.-Ing. | Rohrkammerdämpfer |
| US6889499B2 (en) * | 2001-05-16 | 2005-05-10 | Darryl C. Bassani | Internal combustion engine exhaust system |
-
2003
- 2003-08-27 DE DE10339811A patent/DE10339811B4/de not_active Expired - Fee Related
-
2004
- 2004-03-25 EP EP04101237A patent/EP1510666A3/de not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008027290A1 (de) * | 2008-06-06 | 2009-12-10 | J. Eberspächer GmbH & Co. KG | Schalldämpfer für eine Abgasanlage |
| US7874401B2 (en) | 2008-06-06 | 2011-01-25 | J. Eberspächer GmbH & Co. KG | Exhaust muffler for exhaust system |
| DE102010062049A1 (de) * | 2010-11-26 | 2012-05-31 | J. Eberspächer GmbH & Co. KG | Schalldämpfer |
| DE102014114254A1 (de) * | 2014-09-30 | 2016-03-31 | Eberspächer Exhaust Technology GmbH & Co. KG | Passiver Schalldämpfer mit Helmholtz-Resonator für mehrflutige Abgasanlagen |
| US20220018272A1 (en) * | 2020-07-15 | 2022-01-20 | Faurecia Emissions Control Technologies, Germany Gmbh | Muffler of an exhaust system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1510666A3 (de) | 2005-12-07 |
| DE10339811A1 (de) | 2005-04-07 |
| DE10339811B4 (de) | 2005-09-22 |
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Legal Events
| Date | Code | Title | Description |
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