US20060266580A1 - Muffler for an exhaust system and manufacturing method for same - Google Patents
Muffler for an exhaust system and manufacturing method for same Download PDFInfo
- Publication number
- US20060266580A1 US20060266580A1 US11/440,310 US44031006A US2006266580A1 US 20060266580 A1 US20060266580 A1 US 20060266580A1 US 44031006 A US44031006 A US 44031006A US 2006266580 A1 US2006266580 A1 US 2006266580A1
- Authority
- US
- United States
- Prior art keywords
- pipe
- section
- muffler
- end section
- jacket
- 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.)
- Abandoned
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 13
- 238000005452 bending Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- 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 ; 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
-
- 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
-
- 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
- F01N2490/00—Structure, disposition or shape of gas-chambers
Definitions
- the present invention relates to a muffler for an exhaust system of an internal combustion engine, especially in a motor vehicle.
- the invention also relates to a method for manufacturing a reflective chamber enclosing an end section of an exhaust pipe that is permeable for airborne sound, especially for a muffler of an exhaust system of an internal combustion engine.
- Mufflers for exhaust systems are known in general.
- an exhaust pipe having an end section that is permeable for airborne sound may be situated in a housing of the muffler. This end section may be sheathed by a jacket to thereby form a reflective chamber.
- exhaust gases flow through the muffler and through the exhaust pipe. Airborne sound then propagates in the exhaust gas. Airborne sound can enter the reflective chamber through the end section which is permeable for airborne sound, thereby resulting in attenuation of airborne sound in a predetermined frequency range.
- the present invention relates to the problem of finding a method for an exhaust pipe equipped with a reflective chamber such that the method is characterized by inexpensive manufacturability in particular.
- the invention is based on the general idea of manufacturing the jacket of the reflective chamber and the end section of the exhaust pipe in one piece. Therefore, no separate jacket need be attached to the exhaust pipe to assemble the muffler. This integral design thus simplifies assembly and therefore reduces the cost of manufacturing the muffler.
- the jacket is formed by a pipe section of the exhaust pipe that is bent or rolled back over the end section on the outside is especially advantageous.
- the end section is also possible for the end section to be formed by a pipe section of the exhaust pipe that is bent or rolled back through the jacket on the inside.
- both the jacket and the end section each form an integral component of the exhaust pipe.
- the two pipe sections which form the jacket and the end section of the finished exhaust pipe after the sections have been bent or rolled back are situated directly side-by-side in the longitudinal direction of the pipe. After bending or rolling back the pipe sections, the two pipe sections are arranged concentrically to one another.
- the pipe section on the outside then forms the jacket of the reflective chamber while the pipe section on the inside forms the end section of the exhaust pipe which is permeable for airborne sound.
- the design of the reflective chamber by bending or rolling back a pipe section of the exhaust pipe can be implemented especially inexpensively and in a manner that is reliable for the process. Furthermore, there are no tolerance problems for the design of the reflective chamber. Moreover, no additional operation is required for attaching a separate jacket to the exhaust pipe.
- FIG. 1 illustrates a schematic diagram of a highly simplified basic longitudinal section through a muffler with a reflective chamber according to this invention
- FIG. 2 illustrates a schematic diagram of an enlarged detail view of the muffler according to FIG. 1 in the area if the reflective chamber but in a different embodiment
- FIGS. 3 a - 3 c illustrate schematic diagrams of highly simplified longitudinal sections of an exhaust pipe in different manufacturing states
- FIGS. 4 a - 4 c illustrate schematic diagrams of views like those shown in FIGS. 3 a - 3 c, but in a different embodiment of the exhaust pipe.
- an inventive muffler 1 includes at least one exhaust pipe 2 .
- This exhaust pipe 2 is designed here as an outlet pipe leading out of a housing 3 of the muffler 1 .
- the muffler 1 here also includes an inlet pipe 4 and at least one connecting pipe 5 .
- three chambers are formed in the housing 3 , namely an inlet chamber 6 , an outlet chamber 7 and a muffler chamber 8 .
- the inlet pipe 4 passes through the outlet chamber 7 and the muffler chamber 8 and ends in the inlet chamber 6 .
- the at least one connecting pipe 5 passes through the muffler chamber 8 and connects the inlet chamber 6 to the outlet chamber 7 .
- the outlet pipe, i.e., the exhaust pipe 2 begins in the outlet chamber 7 and passes through the muffler chamber 8 and the inlet chamber 6 .
- the inlet pipe 4 may be designed to be permeable for airborne sound in the area of the muffler chamber 8 , which may be accomplished by means of a perforation 9 , for example.
- This perforation 9 i.e., the permeability for airborne sound, is symbolized in FIG. 1 by double arrows.
- the at least one connecting pipe 5 may also be designed to be permeable for airborne sound in the area of the muffler chamber 8 . This is preferably also accomplished with the help of a perforation 9 , again symbolized by double arrows.
- a suitable muffler material (not shown here) may be arranged in the muffler chamber 8 .
- the exhaust pipe 2 of the inventive muffler 1 has a reflective chamber 10 .
- an end section 11 of the exhaust pipe 2 is sheathed by a jacket 12 in such a way that the reflective chamber 10 is formed radially between the end section 11 and the jacket 12 .
- the end section 11 is designed to be permeable for airborne sound, which is again symbolized by double arrows in the figures.
- the permeability for airborne sound may preferably be achieved through a suitable perforation 9 of the end section 11 .
- the jacket 12 and the end section 11 are manufactured of one piece. This means that the jacket 12 is not a separate component with regard to the end section 11 and the exhaust pipe 2 and instead the jacket 12 is an integral component of the exhaust pipe 2 .
- the jacket 12 is formed by a pipe section 13 of the exhaust pipe 2 which is bent back radially on the outside over the end section 11 , preferably rolled back, thereby enclosing and/or sheathing the end section 11 .
- the jacket 12 and/or the pipe section 13 forming the jacket 12 has a ring collector 15 on its end which is remote from an opening 14 in the exhaust pipe 2 , said ring collar protruding inward radially and being in contact with the exhaust pipe 2 .
- the reflective chamber 10 is closed on the end remote from the opening 14 .
- the reflective chamber 10 is necessarily sealed by the seamless transition between the interior end section 11 and the exterior jacket 12 .
- the ring collar 15 may essentially be in loose contact with the exhaust pipe 2 . Leakage is not critical here. Essentially however it is possible through suitable measures to mount the ring collar 15 in an airtight mount on the exhaust pipe 2 and/or to attach it to the exhaust pipe 2 . For example, this may be accomplished through an appropriate flanging and/or by soldering and/or welding.
- the end section 11 which is perforated or permeable for airborne sound is formed by the pipe section 13 which in this case is bent back radially on the inside through the jacket 12 , especially being rolled back to thereby form the reflective chamber 10 .
- the ring collar 15 protrudes radially outward away from the end section 11 and is in contact with the exhaust pipe 2 on the inside.
- a loose or airtight and/or tight contact between the ring collar 15 and the exhaust pipe 2 is/are possible.
- FIG. 3 a illustrates a starting state with a starting pipe 2 ′ having a pipe opening 16 .
- a first pipe section 13 begins at this pipe opening 16 , with a second pipe section 17 being connected thereto.
- the second pipe section 17 is made permeable for airborne sound, symbolized here again by the double arrows.
- the second pipe section 17 for example, is provided with a perforation 9 .
- the first pipe section 13 is bent back on the outside over the second pipe section 17 , preferably by rolling it back, thereby achieving the state illustrated in FIG. 3 c.
- the ring collar 15 may be formed by bending back the first pipe section 13 or subsequent thereto and brought into contact with the exhaust pipe 2 .
- the finished exhaust pipe 2 is obtained, with the two pipe sections 13 , 17 starting at the opening 14 of the exhaust pipe 2 .
- the second pipe section 17 on the inside then forms the end section 11 while the first pipe section on the outside forms the jacket 12 .
- the reflective chamber 10 is formed between the end section 11 and the jacket 12 .
- the exhaust pipe 2 equipped with the reflective chamber 10 may also be produced as described below.
- the starting pipe 2 ′ again has the pipe opening 16 , the first pipe section 13 and the second pipe section 17 .
- the first pipe section 13 is then designed to be permeable for airborne sound and to this end is equipped in particular with a perforation 9 .
- the first pipe section 13 is bent back on the inside through the second pipe section 17 , preferably by rolling it back.
- the ring collar 15 is formed and brought into contact with the exhaust pipe 2 .
- the two pipe sections 13 , 17 here again begin at the opening 14 .
- the first pipe section 13 is situated on the inside, forming the end section 11 of the exhaust pipe 2
- the second pipe section 17 is situated on the outside and subsequently forms the jacket 12 .
- the reflective chamber 10 is again formed between the jacket 12 and the end section 11 .
- Suitable tools or machines are known for bending or rolling back a pipe section. This bending or rolling process can be designed to be adequately reliable, in which case comparatively narrow shape tolerances can be maintained in particular.
- the integral design of the reflective chamber 10 on the exhaust pipe 2 makes implementation of such a reflective chamber 10 comparatively inexpensive. In particular, this eliminates the need for any additional processing steps for attaching a jacket designed as a separate component to the exhaust pipe 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
A muffler for an exhaust system of an internal combustion engine, in particular in a motor vehicle, with an exhaust pipe which has an end section that is permeable for airborne sound and which is surrounded by a jacket in this end section to form a reflective chamber. To make it inexpensive to manufacture the exhaust pipe with the reflective chamber, the jacket and the end section are manufactured in one piece.
Description
- The present invention relates to a muffler for an exhaust system of an internal combustion engine, especially in a motor vehicle. The invention also relates to a method for manufacturing a reflective chamber enclosing an end section of an exhaust pipe that is permeable for airborne sound, especially for a muffler of an exhaust system of an internal combustion engine.
- Mufflers for exhaust systems are known in general. In certain embodiments of such mufflers, an exhaust pipe having an end section that is permeable for airborne sound may be situated in a housing of the muffler. This end section may be sheathed by a jacket to thereby form a reflective chamber. During operation of the exhaust system, exhaust gases flow through the muffler and through the exhaust pipe. Airborne sound then propagates in the exhaust gas. Airborne sound can enter the reflective chamber through the end section which is permeable for airborne sound, thereby resulting in attenuation of airborne sound in a predetermined frequency range.
- For production of such reflective chambers, it is essentially possible to push a sleeve that forms the jacket onto the outside of the end section of the exhaust pipe and secure it on the exhaust pipe in a suitable manner.
- The present invention relates to the problem of finding a method for an exhaust pipe equipped with a reflective chamber such that the method is characterized by inexpensive manufacturability in particular.
- The invention is based on the general idea of manufacturing the jacket of the reflective chamber and the end section of the exhaust pipe in one piece. Therefore, no separate jacket need be attached to the exhaust pipe to assemble the muffler. This integral design thus simplifies assembly and therefore reduces the cost of manufacturing the muffler.
- An embodiment in which the jacket is formed by a pipe section of the exhaust pipe that is bent or rolled back over the end section on the outside is especially advantageous. As an alternative, it is also possible for the end section to be formed by a pipe section of the exhaust pipe that is bent or rolled back through the jacket on the inside. In both alternatives, both the jacket and the end section each form an integral component of the exhaust pipe. In the starting state of the exhaust pipe, i.e., in the case of a starting pipe, the two pipe sections which form the jacket and the end section of the finished exhaust pipe after the sections have been bent or rolled back are situated directly side-by-side in the longitudinal direction of the pipe. After bending or rolling back the pipe sections, the two pipe sections are arranged concentrically to one another. The pipe section on the outside then forms the jacket of the reflective chamber while the pipe section on the inside forms the end section of the exhaust pipe which is permeable for airborne sound. The design of the reflective chamber by bending or rolling back a pipe section of the exhaust pipe can be implemented especially inexpensively and in a manner that is reliable for the process. Furthermore, there are no tolerance problems for the design of the reflective chamber. Moreover, no additional operation is required for attaching a separate jacket to the exhaust pipe.
- It is self-evident that the features mentioned above and those yet to be explained below may be used not only in the particular combination given but also in other combinations or even alone without going beyond the scope of the present invention.
- Preferred exemplary embodiments of the present invention are depicted in the drawings and explained in greater detail in the following description, where the same reference notation refers to the same or similar or functionally similar components.
-
FIG. 1 illustrates a schematic diagram of a highly simplified basic longitudinal section through a muffler with a reflective chamber according to this invention, -
FIG. 2 illustrates a schematic diagram of an enlarged detail view of the muffler according toFIG. 1 in the area if the reflective chamber but in a different embodiment, -
FIGS. 3 a-3 c illustrate schematic diagrams of highly simplified longitudinal sections of an exhaust pipe in different manufacturing states, and -
FIGS. 4 a-4 c illustrate schematic diagrams of views like those shown inFIGS. 3 a-3 c, but in a different embodiment of the exhaust pipe. - According to
FIG. 1 , aninventive muffler 1 includes at least oneexhaust pipe 2. Thisexhaust pipe 2 is designed here as an outlet pipe leading out of ahousing 3 of themuffler 1. Themuffler 1 here also includes aninlet pipe 4 and at least one connectingpipe 5. As an example, three chambers are formed in thehousing 3, namely aninlet chamber 6, anoutlet chamber 7 and amuffler chamber 8. Theinlet pipe 4 passes through theoutlet chamber 7 and themuffler chamber 8 and ends in theinlet chamber 6. The at least one connectingpipe 5 passes through themuffler chamber 8 and connects theinlet chamber 6 to theoutlet chamber 7. The outlet pipe, i.e., theexhaust pipe 2 begins in theoutlet chamber 7 and passes through themuffler chamber 8 and theinlet chamber 6. - The
inlet pipe 4 may be designed to be permeable for airborne sound in the area of themuffler chamber 8, which may be accomplished by means of aperforation 9, for example. Thisperforation 9, i.e., the permeability for airborne sound, is symbolized inFIG. 1 by double arrows. Similarly, the at least one connectingpipe 5 may also be designed to be permeable for airborne sound in the area of themuffler chamber 8. This is preferably also accomplished with the help of aperforation 9, again symbolized by double arrows. A suitable muffler material (not shown here) may be arranged in themuffler chamber 8. - The
exhaust pipe 2 of theinventive muffler 1 has areflective chamber 10. To this end, anend section 11 of theexhaust pipe 2 is sheathed by ajacket 12 in such a way that thereflective chamber 10 is formed radially between theend section 11 and thejacket 12. Theend section 11 is designed to be permeable for airborne sound, which is again symbolized by double arrows in the figures. The permeability for airborne sound may preferably be achieved through asuitable perforation 9 of theend section 11. - According to an embodiment of the invention, the
jacket 12 and theend section 11 are manufactured of one piece. This means that thejacket 12 is not a separate component with regard to theend section 11 and theexhaust pipe 2 and instead thejacket 12 is an integral component of theexhaust pipe 2. - In the embodiment shown in
FIG. 1 , thejacket 12 is formed by apipe section 13 of theexhaust pipe 2 which is bent back radially on the outside over theend section 11, preferably rolled back, thereby enclosing and/or sheathing theend section 11. Furthermore, thejacket 12 and/or thepipe section 13 forming thejacket 12 has aring collector 15 on its end which is remote from an opening 14 in theexhaust pipe 2, said ring collar protruding inward radially and being in contact with theexhaust pipe 2. In this way, thereflective chamber 10 is closed on the end remote from the opening 14. On the end facing theopening 14, thereflective chamber 10 is necessarily sealed by the seamless transition between theinterior end section 11 and theexterior jacket 12. - The
ring collar 15 may essentially be in loose contact with theexhaust pipe 2. Leakage is not critical here. Essentially however it is possible through suitable measures to mount thering collar 15 in an airtight mount on theexhaust pipe 2 and/or to attach it to theexhaust pipe 2. For example, this may be accomplished through an appropriate flanging and/or by soldering and/or welding. - In the alternative embodiment illustrated in
FIG. 2 , theend section 11 which is perforated or permeable for airborne sound is formed by thepipe section 13 which in this case is bent back radially on the inside through thejacket 12, especially being rolled back to thereby form thereflective chamber 10. In this variant thering collar 15 protrudes radially outward away from theend section 11 and is in contact with theexhaust pipe 2 on the inside. Here again essentially a loose or airtight and/or tight contact between thering collar 15 and theexhaust pipe 2 is/are possible. - Preferred embodiments of a method for producing the
reflective chamber 10 on theexhaust pipe 2 are explained in greater detail below. -
FIG. 3 a illustrates a starting state with astarting pipe 2′ having a pipe opening 16. Afirst pipe section 13 begins at this pipe opening 16, with asecond pipe section 17 being connected thereto. - According to
FIG. 3 b, in a first process step, thesecond pipe section 17 is made permeable for airborne sound, symbolized here again by the double arrows. Thesecond pipe section 17, for example, is provided with aperforation 9. - Then the
first pipe section 13 is bent back on the outside over thesecond pipe section 17, preferably by rolling it back, thereby achieving the state illustrated inFIG. 3 c. Thering collar 15 may be formed by bending back thefirst pipe section 13 or subsequent thereto and brought into contact with theexhaust pipe 2. Then thefinished exhaust pipe 2 is obtained, with the twopipe sections opening 14 of theexhaust pipe 2. Thesecond pipe section 17 on the inside then forms theend section 11 while the first pipe section on the outside forms thejacket 12. Then thereflective chamber 10 is formed between theend section 11 and thejacket 12. - According to
FIGS. 4 a through 4 c, theexhaust pipe 2 equipped with thereflective chamber 10 may also be produced as described below. - In the starting state according to
FIG. 4 a, the startingpipe 2′ again has thepipe opening 16, thefirst pipe section 13 and thesecond pipe section 17. - In a first processing step according to
FIG. 4 b, thefirst pipe section 13 is then designed to be permeable for airborne sound and to this end is equipped in particular with aperforation 9. - Following that, according to
FIG. 4 c, thefirst pipe section 13 is bent back on the inside through thesecond pipe section 17, preferably by rolling it back. At the same time or subsequently, thering collar 15 is formed and brought into contact with theexhaust pipe 2. In the finished state of theexhaust pipe 2, the twopipe sections opening 14. Thefirst pipe section 13 is situated on the inside, forming theend section 11 of theexhaust pipe 2, while in this variant thesecond pipe section 17 is situated on the outside and subsequently forms thejacket 12. Thereflective chamber 10 is again formed between thejacket 12 and theend section 11. - Suitable tools or machines are known for bending or rolling back a pipe section. This bending or rolling process can be designed to be adequately reliable, in which case comparatively narrow shape tolerances can be maintained in particular. The integral design of the
reflective chamber 10 on theexhaust pipe 2 makes implementation of such areflective chamber 10 comparatively inexpensive. In particular, this eliminates the need for any additional processing steps for attaching a jacket designed as a separate component to theexhaust pipe 2.
Claims (12)
1. A muffler for an exhaust system of an internal combustion engine of a motor vehicle, comprising:
an exhaust pipe having an end section that is permeable for airborne sound and is sheathed by a jacket in this end section to form a reflective chamber,
wherein, the jacket and the end section are made of one piece.
2. The muffler according to claim 1 , wherein the jacket is formed by a pipe section that is bent or rolled back over the end section on the outside.
3. The muffler according to claim 1 , wherein the end section is formed by a pipe section that is bent or rolled back through the jacket on the inside.
4. The muffler according to claim 1 , wherein the jacket or the end section has a ring collar which is in contact with the exhaust pipe and protrudes radially on its end remote from an opening in the exhaust pipe.
5. The muffler according to claim 1 , wherein the end section perforated.
6. The muffler according to claim 1 , wherein the exhaust pipe is an outlet pipe leading out of a housing of the muffler.
7. A method for manufacturing an exhaust pipe for a muffler for an exhaust for an internal combustion engine, the muffler having a reflective chamber surrounding an end section of an exhaust pipe, said end section being permeable for airborne sound, the method comprising:
making an outlet pipe, which has a first pipe section beginning at a pipe opening and a second pipe section connected to the first pipe section, permeable for airborne sound in the second pipe section, and
bending the first pipe section back over the second pipe section on the outside,
wherein, the two pipe sections begin at an opening in the exhaust pipe with the second pipe on the inside forming the end section and the first pipe section on the outside forming a jacket enclosing the reflective chamber.
8. The method according to claim 7 , wherein the bending back operation comprises a rolling process.
9. The method according to claim 7 , wherein the respective pipe section is perforated to make it permeable for airborne sound.
10. A method for manufacturing an exhaust pipe for a muffler for an exhaust for an internal combustion engine, the muffler having a reflective chamber surrounding an end section of an exhaust pipe, said end section being permeable for airborne sound, the method comprising:
making an outlet pipe, which has a first pipe section beginning at a pipe opening and a second pipe section beginning at the first pipe section, permeable for airborne sound in the first pipe section, and,
bending the first pipe section back through the second pipe section on the inside, so that the two pipe sections begin at an opening in the exhaust pipe,
wherein, the first pipe section on the inside forms the end section, while the second pipe section on the outside forms a jacket surrounding the reflective chamber.
11. The method according to claim 10 , wherein the bending back operation is embodied as a rolling process.
12. The method according to claim 10 , wherein the respective pipe section is perforated to make it permeable for airborne sound.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEDE102005024831.4 | 2005-05-27 | ||
DE102005024831A DE102005024831A1 (en) | 2005-05-27 | 2005-05-27 | Silencer for an exhaust system and manufacturing process |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060266580A1 true US20060266580A1 (en) | 2006-11-30 |
Family
ID=36579729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/440,310 Abandoned US20060266580A1 (en) | 2005-05-27 | 2006-05-24 | Muffler for an exhaust system and manufacturing method for same |
Country Status (3)
Country | Link |
---|---|
US (1) | US20060266580A1 (en) |
EP (1) | EP1726794A1 (en) |
DE (1) | DE102005024831A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8418805B1 (en) * | 2012-06-08 | 2013-04-16 | Hyundai Motor Company | Muffler for vehicle |
US20130270034A1 (en) * | 2010-12-24 | 2013-10-17 | Toyota Jidosha Kabushiki Kaisha | Silencing apparatus for vehicle |
CN103835785A (en) * | 2012-11-23 | 2014-06-04 | 现代自动车株式会社 | Muffler for motor vehicle |
US20150176448A1 (en) * | 2013-12-19 | 2015-06-25 | Hyundai Motor Company | Muffler for vehicle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008015016B3 (en) * | 2008-03-19 | 2009-08-27 | Audi Ag | Silencer arrangement for exhaust system of motor vehicle, has silencer housing divided into two chambers, where one chamber is formed as Helmholtz resonator that amplifies frequency portion of sound passing through separating wall |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US452020A (en) * | 1891-05-12 | Muffler | ||
US3498407A (en) * | 1967-09-26 | 1970-03-03 | Walker Mfg Co | Muffler partition assembly |
US4466566A (en) * | 1981-08-26 | 1984-08-21 | Koppy Corporation | Method of forming a thin walled annular channel |
US4697668A (en) * | 1986-01-13 | 1987-10-06 | Nelson Industries Inc. | Aspirating muffler |
US5224973A (en) * | 1992-04-20 | 1993-07-06 | Donaldson Company, Inc. | Filter cartridge for trap apparatus |
US6167983B1 (en) * | 1998-11-25 | 2001-01-02 | W. Lottgers Gmbh & Co. Kg | Process for production of tube profile element with swaged closed head end and muffler suspension produced thereby |
US20020011002A1 (en) * | 1997-11-28 | 2002-01-31 | Daimler-Benz Aktiengesellschaft | Air gap insulated exhaust pipe with branch pipe stub and method of manufacturing same |
US20020144400A1 (en) * | 2001-04-06 | 2002-10-10 | Baldwin Freddie A. | Method of locking together exhaust components |
US6467570B1 (en) * | 2001-05-15 | 2002-10-22 | Arvin Technologies, Inc. | Spark arrester with spark filter |
US20040052697A1 (en) * | 2002-09-18 | 2004-03-18 | Mcintosh Loel E. | Catalytic converter |
US6968922B2 (en) * | 2001-12-19 | 2005-11-29 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust apparatus for vehicle |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3613830A (en) * | 1969-07-18 | 1971-10-19 | Walker Mfg Co | One-piece tube and shell assembly for silencer |
DE2529496A1 (en) * | 1975-07-02 | 1977-01-20 | Bohner & Koehle | PROCESS FOR FLARING THE FRONT AREA OF ROTATIONAL SYMMETRIC WORKPIECES AND DEVICE FOR CARRYING OUT THE PROCESS |
DE3422040A1 (en) * | 1984-06-14 | 1985-12-19 | Heinz-Eckhard Dipl.-Ing. 6100 Darmstadt Engel | Reverse forming process for the production of double-walled cylindrical workpieces and a forming tool for this purpose |
US5252788A (en) * | 1992-04-10 | 1993-10-12 | Ap Parts Manufacturing Co. | Stamp formed muffler with in-line expansion chamber and arcuately formed effective flow tubes |
JPH06344042A (en) * | 1993-06-04 | 1994-12-20 | Calsonic Corp | Method and device for forming curl pipe |
-
2005
- 2005-05-27 DE DE102005024831A patent/DE102005024831A1/en not_active Withdrawn
-
2006
- 2006-05-10 EP EP06113764A patent/EP1726794A1/en not_active Withdrawn
- 2006-05-24 US US11/440,310 patent/US20060266580A1/en not_active Abandoned
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US452020A (en) * | 1891-05-12 | Muffler | ||
US3498407A (en) * | 1967-09-26 | 1970-03-03 | Walker Mfg Co | Muffler partition assembly |
US4466566A (en) * | 1981-08-26 | 1984-08-21 | Koppy Corporation | Method of forming a thin walled annular channel |
US4697668A (en) * | 1986-01-13 | 1987-10-06 | Nelson Industries Inc. | Aspirating muffler |
US5224973A (en) * | 1992-04-20 | 1993-07-06 | Donaldson Company, Inc. | Filter cartridge for trap apparatus |
US20020011002A1 (en) * | 1997-11-28 | 2002-01-31 | Daimler-Benz Aktiengesellschaft | Air gap insulated exhaust pipe with branch pipe stub and method of manufacturing same |
US6519851B2 (en) * | 1997-11-28 | 2003-02-18 | Daimlerchrysler Ag | Air gap insulated exhaust pipe with branch pipe stub and method of manufacturing same |
US6167983B1 (en) * | 1998-11-25 | 2001-01-02 | W. Lottgers Gmbh & Co. Kg | Process for production of tube profile element with swaged closed head end and muffler suspension produced thereby |
US20020144400A1 (en) * | 2001-04-06 | 2002-10-10 | Baldwin Freddie A. | Method of locking together exhaust components |
US6467570B1 (en) * | 2001-05-15 | 2002-10-22 | Arvin Technologies, Inc. | Spark arrester with spark filter |
US6968922B2 (en) * | 2001-12-19 | 2005-11-29 | Honda Giken Kogyo Kabushiki Kaisha | Exhaust apparatus for vehicle |
US20040052697A1 (en) * | 2002-09-18 | 2004-03-18 | Mcintosh Loel E. | Catalytic converter |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130270034A1 (en) * | 2010-12-24 | 2013-10-17 | Toyota Jidosha Kabushiki Kaisha | Silencing apparatus for vehicle |
US8991553B2 (en) * | 2010-12-24 | 2015-03-31 | Toyota Jidosha Kabushiki Kaisha | Silencing apparatus for vehicle |
US8418805B1 (en) * | 2012-06-08 | 2013-04-16 | Hyundai Motor Company | Muffler for vehicle |
CN103835785A (en) * | 2012-11-23 | 2014-06-04 | 现代自动车株式会社 | Muffler for motor vehicle |
US8905188B2 (en) * | 2012-11-23 | 2014-12-09 | Hyundai Motor Company | Muffler for motor vehicle |
US20150176448A1 (en) * | 2013-12-19 | 2015-06-25 | Hyundai Motor Company | Muffler for vehicle |
US9212579B2 (en) * | 2013-12-19 | 2015-12-15 | Hyundai Motor Company | Muffler for vehicle |
Also Published As
Publication number | Publication date |
---|---|
DE102005024831A1 (en) | 2006-11-30 |
EP1726794A1 (en) | 2006-11-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20060266580A1 (en) | Muffler for an exhaust system and manufacturing method for same | |
JP5781319B2 (en) | Silencer | |
US20140165544A1 (en) | Modular manifold for motor vehicles | |
US20110083924A1 (en) | Muffler for vehicle | |
CN109695491A (en) | Silencer insertion piece, the silencer including it and method for manufacturing silencer insertion piece | |
EP1607594A1 (en) | Exhaust silencer for internal combustion engine | |
US6364055B1 (en) | Acoustically non-resonant pipe | |
US7942235B2 (en) | Exhaust system for an internal combustion engine | |
JP2006233862A (en) | Muffler for vehicle | |
WO2006001807A3 (en) | Automotive exhaust component and method of manufacture | |
KR100393930B1 (en) | suction | |
US20160018034A1 (en) | Muffler | |
US8307944B2 (en) | Muffler | |
KR100989601B1 (en) | Housing for a component of an exhaust system and method of producing such a housing | |
US20170159539A1 (en) | Exhaust connection unit for catalytic converter and manufacturing method of exhaust connection unit for catalytic converter | |
US7762063B2 (en) | Housing for an exhaust gas purification component for forming a joined connection with an exhaust line section, exhaust system having the housing and motor vehicle having the exhaust system | |
US9816413B2 (en) | Muffler with interconnected pipes | |
US6687996B2 (en) | Method of making an exhaust gas collector | |
CN115434785B (en) | Muffler, method for producing a muffler, and exhaust system for an internal combustion engine | |
US20010026780A1 (en) | Housing for an exhaust gas catalyst | |
RU2704182C2 (en) | Vehicle noise silencer | |
JP2009236040A (en) | Exhaust muffler | |
US11168604B2 (en) | Housing, especially for an exhaust system of an internal combustion engine of a vehicle | |
JP2005256736A (en) | Resonator structure for automobile | |
JP4988058B1 (en) | Vehicle silencer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: J. EBERSPAECHER GMBH & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SEILER, HARRY;REEL/FRAME:017937/0922 Effective date: 20060502 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |