DE102004030214A1 - Exhaust system, has funnel shaped top unit with noise emission outlet ports that are arranged around orifice opening of tail pipe, where ports can be covered with an absorption material on outer side - Google Patents
Exhaust system, has funnel shaped top unit with noise emission outlet ports that are arranged around orifice opening of tail pipe, where ports can be covered with an absorption material on outer side Download PDFInfo
- Publication number
- DE102004030214A1 DE102004030214A1 DE200410030214 DE102004030214A DE102004030214A1 DE 102004030214 A1 DE102004030214 A1 DE 102004030214A1 DE 200410030214 DE200410030214 DE 200410030214 DE 102004030214 A DE102004030214 A DE 102004030214A DE 102004030214 A1 DE102004030214 A1 DE 102004030214A1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust system
- ports
- noise emission
- covered
- outlet ports
- 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.)
- Ceased
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
- 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
- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/082—Other arrangements or adaptations of exhaust conduits of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation
-
- 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
- F01N13/20—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 flared outlets, e.g. of fish-tail shape
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Abgasanlage nach dem Oberbegriff des Anspruchs 1.The The invention relates to an exhaust system according to the preamble of claim 1.
Aus
der DE-U 1 858 808 ist ein Auspuffendrohr einer Abgasanlage bekannt,
das durchgehend perforiert ausgebildet und in einem Außenrohr
angeordnet ist. Zwischen dem Auspuffendrohr und dem Außenrohr
ist ein Schallschluckstoff angeordnet. Des Weiteren ist aus der
Aufgabe der Erfindung ist es, eine verbesserte Abgasanlage zu schaffen, die eine Reduktion eines Mündungsgeräuschs eines aus einem Abgasendrohr austretenden Abgasstroms bewirkt.task the invention is to provide an improved exhaust system, a reduction of a mouth noise of a causes exhaust gas flow exiting an exhaust tailpipe.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. Weitere vorteilhafte Merkmale beinhalten die Unteransprüche.These The object is achieved by the Characteristics of claim 1 solved. Further advantageous features include the subclaims.
Die mit der Erfindung hauptsächlich erzielten Vorteile bestehen darin, dass durch eine einfache Maßnahme das Mündungsgeräusch des austretenden Abgasstromes so weit reduzierbar ist, dass dieses Mündungsgeräusch gesetzlichen Anforderungen genügt. Dies wird insbesondere dadurch erreicht, dass ein Aufsatzelement auf dem Abgasendrohr zumindest im Grund mit Geräusch-Auslassöffnungen versehen ist, die um eine Mündungsöffnung des Abgasendrohrs herum angeordnet sind.The with the invention mainly The advantages achieved are that, by a simple measure, the Muzzle noise of the Exiting exhaust gas flow is so far reducible that this muzzle noise legal Requirements are sufficient. This is achieved in particular by the fact that an attachment element provided on the exhaust pipe, at least in the bottom with noise outlet openings which is around a mouth of the Exhaust tailpipe are arranged around.
Damit eine höhere Reduzierung des Abgas-Mündungsgeräusches erzielbar wird, können zusätzlich die Geräusch-Auslassöffnungen von einem Absorptionsmaterial abgedeckt werden, das außenseitig des Aufsatzelements angeordet ist. Diese Geräusch-Auslassöffnungen können aus sich radial von der Mündungsöffnung des Abgasendrohres weg erstreckenden Schlitzen im Aufsatzelement bestehen, wobei die Schlitze auch unterschiedlich lang ausgeführt sein können.In order to a higher one Reduction of exhaust noise can be achieved will, can additionally the noise outlet openings be covered by an absorbent material, the outside angeordet the attachment element. These noise outlet ports may extend radially from the Mouth opening of the Abgasendrohres away extending slots in the attachment element, wherein The slots can also be made different lengths.
Nach weiteren Ausführungen der Erfindung können die Geräusch-Auslassöffnungen aus runden oder ovalen Öffnungen bestehen. Die Geometrie der Öffnungen hängt wesentlich von der zu erzielenden Reduktion des Mündungsgeräusches des Abgasstromes ab, wozu die Geräusch-Auslassöffnungen in Kombination sowohl im Grund des Aufsatzelements als auch im Bereich des Trichters angeordnet sein können.To further versions of the invention the noise outlet openings from round or oval openings consist. The geometry of the openings depends essentially from the reduction of the muzzle noise of the exhaust gas stream to be achieved, why the noise outlet openings in combination both in the bottom of the tower element and in the area of the funnel can be arranged.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher beschrieben.One embodiment The invention is illustrated in the drawings and will be described in more detail below.
Es zeigenIt demonstrate
Wie
in
Im
Grund G des Aufsatzelements
Die
Geräusch-Auslassöffnungen
Durch
die Geräusch-Auslassöffnungen
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410030214 DE102004030214A1 (en) | 2004-06-22 | 2004-06-22 | Exhaust system, has funnel shaped top unit with noise emission outlet ports that are arranged around orifice opening of tail pipe, where ports can be covered with an absorption material on outer side |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410030214 DE102004030214A1 (en) | 2004-06-22 | 2004-06-22 | Exhaust system, has funnel shaped top unit with noise emission outlet ports that are arranged around orifice opening of tail pipe, where ports can be covered with an absorption material on outer side |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004030214A1 true DE102004030214A1 (en) | 2006-02-23 |
Family
ID=35721077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410030214 Ceased DE102004030214A1 (en) | 2004-06-22 | 2004-06-22 | Exhaust system, has funnel shaped top unit with noise emission outlet ports that are arranged around orifice opening of tail pipe, where ports can be covered with an absorption material on outer side |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004030214A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1916393A1 (en) * | 2006-10-23 | 2008-04-30 | Toyota Jidosha Kabushiki Kaisha | Exhaust device for vehicle engine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2929462A (en) * | 1958-06-30 | 1960-03-22 | Nowak Klaus Frederick | Muffler for internal combustion engines |
EP0434577A1 (en) * | 1989-12-20 | 1991-06-26 | DEVIL (Société anonyme) | Exhaust outlet with gas cleaner |
JPH08170518A (en) * | 1994-12-16 | 1996-07-02 | Honda Motor Co Ltd | Muffler |
-
2004
- 2004-06-22 DE DE200410030214 patent/DE102004030214A1/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2929462A (en) * | 1958-06-30 | 1960-03-22 | Nowak Klaus Frederick | Muffler for internal combustion engines |
EP0434577A1 (en) * | 1989-12-20 | 1991-06-26 | DEVIL (Société anonyme) | Exhaust outlet with gas cleaner |
JPH08170518A (en) * | 1994-12-16 | 1996-07-02 | Honda Motor Co Ltd | Muffler |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1916393A1 (en) * | 2006-10-23 | 2008-04-30 | Toyota Jidosha Kabushiki Kaisha | Exhaust device for vehicle engine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |