EP1347155A2 - Nachschalldämpfer - Google Patents
Nachschalldämpfer Download PDFInfo
- Publication number
- EP1347155A2 EP1347155A2 EP03003086A EP03003086A EP1347155A2 EP 1347155 A2 EP1347155 A2 EP 1347155A2 EP 03003086 A EP03003086 A EP 03003086A EP 03003086 A EP03003086 A EP 03003086A EP 1347155 A2 EP1347155 A2 EP 1347155A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- glass wool
- housing
- exhaust gas
- gas outlet
- pipe
- 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
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
- 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
- F01N1/08—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
- F01N2470/00—Structure or shape of 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 gas passages, pipes or tubes
- F01N2470/16—Plurality of inlet tubes, e.g. discharging into different chambers
Definitions
- the invention relates to a rear silencer according to the preamble of Claim 1.
- DE 29 14 159 C2 describes an exhaust silencer for an exhaust system Internal combustion engine known, which enters a housing of the muffler Exhaust gas inlet pipe. This has a perforation on the circumferential free end on, which is directly facing a wall of the housing, so that an emerging Exhaust gas flow can heat the wall, which is what happens with a stainless steel housing Discoloration of heat results.
- the object of the invention is to provide a noise-controlled rear silencer create the disadvantages of heat discoloration of a stainless steel housing Avoids heating.
- the main advantages achieved with the invention are that in the range of Outlet openings or perforations for the exhaust gas flow in the exhaust gas outlet pipe Walls of the housing of the rear silencer through high-temperature resistant Absorption materials such as Glass wool are protected so that the relatively high Outlet temperatures of the exhaust gases are not transferable to the housing walls.
- This is achieved by lining the other chambers of the housing with glass wool so that the tube ends perforated at the circumference Exhaust gas pipes all around from a space lined with glass wool are surrounded. This free space extends on the face of a free end of the Exhaust gas outlet pipe up to an opening of a spaced apart one downstream exhaust gas outlet pipe. This pipe is immediately from Glass wool enclosed and the perforated peripheral surface is trimmed to the glass wool.
- the free spaces of the rear silencer are closed by perforated holes Support floors for the pipe, the perforations on the pipe circumference approximately in the middle of the Free space. This arrangement ensures that the heat radiation can occur approximately in the center of the free space through the exiting exhaust gas flow.
- the free space is made with a dimension> 10 mm around the pipe.
- the heat shielding with a certain thickness of the glass wool ensures that that the very high gas outlet temperatures at the exhaust outlet pipe up to the outer shell the housing of the rear silencer is greatly reduced.
- the glass wool has an exhaust gas flow on one or more inner surfaces and on one End face of the glass wool lining perforations.
- FIG. 1 An embodiment of the invention is shown in the drawing and is in following described in more detail.
- the drawing shows a section through one Rear silencer with free space in the housing for the exhaust emissions from Exhaust outlet pipes.
- a rear silencer 1 of an exhaust system of an internal combustion engine comprises essentially a housing 2 made of stainless steel in a double version, in the one or two exhaust gas inlet pipes 3 or 3 and 4 enter and with exhaust gas outlet pipes 5 and 6 are connected. At the end spaced from these tubes 5 and 6 are more subsequent exhaust gas outlet pipes 7 and 8 are provided.
- three chambers A, B and C are preferably formed, with the first Chamber A the exhaust gas inlet pipes 3 or 3 and 4 enter and face each other of the housing 2 branch into the other chambers B and C.
- the first chamber is A formed without heat shielding and has a branching at a 90 ° angle Pipe parts 9, which have at least one perforation 10 and the exiting exhaust gas are not directed towards the inner wall of the housing 2, so that none Heat discoloration of the housing can occur.
- the two other chambers B and C are with a space 11, 12 within one Provided heat shield made of glass wool 13.
- these rooms 11, 12 are the free Ends of the exhaust gas outlet pipes 5, 6 are arranged, which are circumferential each have at least one perforation 15 and the front side, for example, of one Lid 14 are complete.
- These perforations, which act as gas outlet openings 15 are arranged approximately in the center of the chambers B and C.
- Exhaust gas outlet pipe 7, 8 Opposite the tube 5, 6 in the chambers B and C is another Exhaust gas outlet pipe 7, 8 provided that is arranged at a distance from the pipe 5, 6 and is completely surrounded by glass wool or arranged embedded in it.
- the Exhaust gas flow flows in the direction of the arrow and also passes through a perforated surface 17, 18 Pipe circumference to the glass wool 13 out.
- the chambers B and C are each towards the chamber A via a support base 19, 20 separated, that is, the chambers A, B and C are via perforations 21 in Support floor 19, 20 connected to one another in a gas-permeable manner.
- the clearances 11, 12 of the chambers B and C can do that with a dimension of> 10 mm Enclose tube 5, 6 all around.
- a Gas outlet temperature on pipe 5, 6 in a range from 800 ° C to 900 ° C to Outer shell of the housing 2 of the rear silencer 1 by 300 ° C to 400 ° C can be reduced so that no heat stains occur on the outer housing 2 made of stainless steel can.
- Perforations 15 in the tubes 5 and 6 Perforations 22 on the inner surfaces of the glass wool 13 facing each other. Can too these perforated inner surfaces the temperature gradient to the outer wall of the housing 2nd influence favorably.
- the glass wool perforations are in a so-called cage arranged, which supports the glass wool.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Surgical Instruments (AREA)
Abstract
Description
Claims (5)
- Nachschalldämpfer für eine Abgasanlage einer Brennkraftmaschine, die aus einem langgestreckten Gehäuse mit mehreren Kammern besteht, wobei in einer stromabwärts liegenden von einer Schale des Gehäuses gebildeten ersten Kammer mindestens ein Abgaseingangsrohr eingeführt ist, während in die weiteren Kammern Abgasausgangsrohre einmünden und aus dem Gehäuse herausgeführt sind, dadurch gekennzeichnet, daß die weiteren Kammern (B) und (C) eines aus Edelstahl bestehenden Gehäuses (2) jeweils eine Auskleidung mit Glaswolle (13) derartig aufweisen, daß am Umfang mit Perforationen (15) versehene Rohrenden der Abgasausgangsrohre (5, 6) rundum von einem mit Glaswolle (13) ausgekleideten Freiraum (11) angeordnet sind, der sich stirnseitig von einem freien Ende des Rohres (5, 6) bis zu einer Einmündungsöffnung eines beabstandeten stromabwärts angeordneten weiteren anschließenden Abgasausgangsrohres (7, 8) erstreckt, deren perforierte Umfangsfläche (17) unmittelbar von der Glaswolle (13) umschlossen ist.
- Nachschalldämpfer nach Anspruch 1, dadurch gekennzeichnet, daß die Freiräume (11, 12) jeweils vorderseitig von einem perforierten Stützboden (20, 21) für das Rohr (5, 6) abgeschlossen sind und die Perforierungen (21) am Rohrumfang etwa im Zentrum des Freiraumes (11) liegen.
- Nachschalldämpfer nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, daß der Freiraum (11) mit einem Maß > 10 mm um das Rohr (5, 6) herum ausgeführt ist.
- Nachschalldämpfer nach den Ansprüchen 1, 2 oder 3, dadurch gekennzeichnet, daß die Glaswolle (13) eine solche Dicke aufweist, daß eine Gasaustrittstemperatur am Rohr (5, 6) im Bereich von 800°C bis 900°C bis zur Außenschale des Gehäuses (2) um 300°C bis 400°C verminderbar ist.
- Nachschalldämpfer nach den Ansprüchen 1, 2, 3 oder 4, dadurch gekennzeichnet, daß die Glaswolle (13) an einer oder mehreren Innenflächen und an der Stirnfläche der Perforationen (22) aufweisen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10212050 | 2002-03-19 | ||
DE10212050A DE10212050B4 (de) | 2002-03-19 | 2002-03-19 | Nachschalldämpfer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1347155A2 true EP1347155A2 (de) | 2003-09-24 |
EP1347155A3 EP1347155A3 (de) | 2003-11-12 |
EP1347155B1 EP1347155B1 (de) | 2005-01-12 |
Family
ID=27771417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03003086A Expired - Lifetime EP1347155B1 (de) | 2002-03-19 | 2003-02-13 | Nachschalldämpfer |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1347155B1 (de) |
AT (1) | ATE287028T1 (de) |
DE (2) | DE10212050B4 (de) |
ES (1) | ES2236633T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1921286A1 (de) * | 2006-10-30 | 2008-05-14 | Yamaha Hatsudoki Kabushiki Kaisha | Abgassystem für ein Motorrad |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012006544B4 (de) | 2012-04-02 | 2015-12-31 | Tenneco Gmbh | Schalldämpfer mit Ankopplung Endrohr über Kopplungskammer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2914159B1 (de) * | 1979-04-07 | 1980-10-16 | Bayerische Motoren Werke Ag | Abgasschalldaempfer |
EP0816649A1 (de) * | 1996-07-05 | 1998-01-07 | J. Eberspächer GmbH & Co. | Absorptions-/Reflexions-Schalldämpfer |
EP1146206A2 (de) * | 2000-04-14 | 2001-10-17 | J. Eberspächer GmbH & Co. | Abgas-Schalldämpfer in Mehrkammerbauweise |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT394887B (de) * | 1985-06-19 | 1992-07-10 | Sebring Auspuff | Abgasschalldaempfer |
DE19706883C2 (de) * | 1997-02-21 | 2002-10-24 | Amc Gmbh | Abgas-Schalldämpfer für Kraftfahrzeuge mit Verbrennungsmotoren |
-
2002
- 2002-03-19 DE DE10212050A patent/DE10212050B4/de not_active Expired - Fee Related
-
2003
- 2003-02-13 EP EP03003086A patent/EP1347155B1/de not_active Expired - Lifetime
- 2003-02-13 ES ES03003086T patent/ES2236633T3/es not_active Expired - Lifetime
- 2003-02-13 DE DE50300242T patent/DE50300242D1/de not_active Expired - Lifetime
- 2003-02-13 AT AT03003086T patent/ATE287028T1/de not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2914159B1 (de) * | 1979-04-07 | 1980-10-16 | Bayerische Motoren Werke Ag | Abgasschalldaempfer |
EP0816649A1 (de) * | 1996-07-05 | 1998-01-07 | J. Eberspächer GmbH & Co. | Absorptions-/Reflexions-Schalldämpfer |
EP1146206A2 (de) * | 2000-04-14 | 2001-10-17 | J. Eberspächer GmbH & Co. | Abgas-Schalldämpfer in Mehrkammerbauweise |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1921286A1 (de) * | 2006-10-30 | 2008-05-14 | Yamaha Hatsudoki Kabushiki Kaisha | Abgassystem für ein Motorrad |
US7779963B2 (en) | 2006-10-30 | 2010-08-24 | Yamaha Hatsudoki Kabushiki Kaisha | Exhaust system for motorcycle |
Also Published As
Publication number | Publication date |
---|---|
ATE287028T1 (de) | 2005-01-15 |
DE10212050A1 (de) | 2003-10-16 |
ES2236633T3 (es) | 2005-07-16 |
DE10212050B4 (de) | 2008-07-31 |
EP1347155A3 (de) | 2003-11-12 |
DE50300242D1 (de) | 2005-02-17 |
EP1347155B1 (de) | 2005-01-12 |
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