US20070029135A1 - Muffler for the exhaust system of an automobile - Google Patents
Muffler for the exhaust system of an automobile Download PDFInfo
- Publication number
- US20070029135A1 US20070029135A1 US11/499,295 US49929506A US2007029135A1 US 20070029135 A1 US20070029135 A1 US 20070029135A1 US 49929506 A US49929506 A US 49929506A US 2007029135 A1 US2007029135 A1 US 2007029135A1
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- United States
- Prior art keywords
- wall
- pipes
- exhaust gas
- wall sections
- 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.)
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Classifications
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- 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
- F01N13/1872—Construction facilitating manufacture, assembly, or disassembly the assembly using stamp-formed parts or otherwise deformed sheet-metal
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- 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
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
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- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/10—Exhaust treating devices having provisions not otherwise provided for for avoiding stress caused by expansions or contractions due to temperature variations
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- 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
- F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
Definitions
- the invention lies in the automotive technology field and relates, particularly, to a muffler for the exhaust system of an automobile.
- a housing comprising two end walls and a circumferential wall has at least one exhaust gas channel passing therethrough, the exhaust gas channel being formed by two pipes arranged successively in the axial direction, each passing through an end wall and being fixed thereon.
- the ends of the pipes penetrating into the interior of the housing are usually each fixed to a housing structure, usually to a transverse wall, each pipe end being allocated a separate wall.
- the inner pipe ends are connected to the transverse walls by welding for example. Since the pipes are in direct contact with the hot exhaust gas, they expand, for example in the initial phase of vehicle operation, more strongly than the housing that is cooled by the airflow.
- a muffler assembly for the exhaust gas system of an automobile.
- the novel assembly comprises:
- a housing formed with two end walls and a circumferen-tial wall and having at least one exhaust gas channel passing therethrough
- transverse wall disposed in the housing and connected to an inside of the circumferential wall, the transverse wall extending transversely to the exhaust gas channel and having a through opening formed therein;
- the transverse wall being formed of at least two wall sections, the wall sections being flexible in an axial direction and each having an edge adjoining the opening;
- the objects of the invention are solved by providing a transverse wall in the housing, the wall being connected to the circumferential wall on the inside, running transverse to the exhaust gas channel and having an opening passing therethrough.
- the wall is formed of at least two wall sections that are flexible in the axial direction, each having one edge adjacent to the opening, wherein the ends of the pipes are each held at their outer side by the edge of at least one wall section.
- a pipe is fixed on the one hand to an end wall and on the other hand to an internal housing structure so that it is held securely and free from rattling both axially and radially.
- this definition relates to the longitudinal extension of the exhaust gas channel or to the central longitudinal axis of the pipes defining the exhaust gas channel. Any lengthening or shortening of the pipes caused by temperature variation is now compensated by the flexible wall sections in the axial direction so that the inwardly projecting ends of the pipes can expand freely without welded seams or other connections between the pipes and housing walls or the housing itself being stressed thereby.
- a flexible wall section can be formed, for example, by providing zones of weakening, that is areas of smaller sheet metal thickness, running approximately radially in the transverse wall, which act as film hinges.
- the wall sections are formed by slots which are separated from the remaining wall region at the transverse wall and which therefore extend approximately radially away from the flow-through opening in the direction of the circumferential wall.
- Such a wall section can therefore bend elastically in the axial direction to a certain extent and thereby compensate for a change in length of a pipe. In the radial direction however, a wall section nevertheless ensures that a pipe is securely retained.
- a further preferred embodiment provides that a wall section comprises a region which extends away from its edge and projects from the plane of the transverse wall. This embodiment allows two pipe ends retained by the transverse wall to be disposed at a greater axial distance from one another.
- the elastic properties of a wall section can be influenced by a region of this type.
- the strength of the connection between a wall section and a pipe end can be increased if the edge of a wall section is formed by an axially extending collar, whose radially inwardly pointing side is connected to the outer side of a pipe.
- the wall sections allocated to a pipe end are distributed uniformly over the circumference of the pipe.
- a pipe end is fixed respectively to a pair of diametrically opposite wall sections. Force components acting on the pipe in the radial direction are mutually compensated by said embodiments.
- FIG. 1 is a section taken through a muffler assembly according to the invention
- FIG. 3 is a plan view onto the transverse wall in the direction of the arrow III in FIG. 2 ;
- FIG. 4 is a perspective view of a transverse wall with pipes fixed thereon;
- FIG. 5 is a longitudinal sectional view of the assembly illustrated in FIG. 4 ;
- FIG. 6 is a perspective view showing a transverse wall with pipes fixed thereon, the two pipes being inserted one inside the other;
- FIG. 7 is a longitudinal sectional view of the assembly illustrated in FIG. 6 ;
- FIG. 8 is a plan view of a transverse wall viewed in the direction of the arrow VIII in FIG. 6 ;
- FIG. 9 is a perspective view of a transverse wall with pipes fixed thereon, the transverse wall comprising two differently configured pairs of wall sections;
- FIG. 11 is a plan view of the transverse wall in the direction of the arrow XI in FIG. 9 ;
- FIG. 12 is a plan view onto the transverse wall viewed in the direction of the arrow XII in FIG. 11 ;
- FIG. 13 is a perspective view of a transverse wall with pipes fixed thereon, with modified wall sections as compared with FIG. 9 ;
- FIG. 14 is a longitudinal sectional view of the assembly illustrated in FIG. 13 ;
- FIG. 1 there is shown a muffler assembly, or a muffler for short, with a housing 1 formed of a circumferential wall 2 having a circular cylindrical cross section, for example, and two end walls 3 , 4 .
- the end walls 3 , 4 are connected to the circumferential wall 2 by a crimping or beading 5 .
- a welded connection is also feasible at this point.
- An opening 7 provided with an extrusion 6 is provided in the end walls 3 , 4 , for example, in a central position.
- the openings 7 are each penetrated by an exhaust gas pipe 8 , 9 .
- the exhaust gas pipes 8 , 9 are fixed to the extrusion 6 , for example, are welded-on. They are disposed successively in the axial direction and define an exhaust gas channel 16 .
- the ends 10 , 12 of the pipes 8 , 9 projecting into the interior of the housing are fixed to a transverse wall 13 .
- the outer edge 14 of the transverse wall 13 is bent in the axial direction 15 and abuts against the inner side of the circumferential wall 2 .
- the outer edge 14 can be fixed to the circumferential wall 2 , for example, by spot welding.
- the transverse wall 13 is penetrated by an opening 17 .
- Approximately radial slots 18 distributed uniformly over the circumference are inserted in the transverse wall 13 , which slots end at a distance before the outer edge 14 on the one hand and open into the openings 17 on the other hand.
- the slots 18 separate wall sections 19 , 20 from one another.
- the wall sections 19 , 20 can be deflected in the axial direction 15 from the plane 21 of the transverse wall 13 by elastic deformation.
- One pipe end 10 , 12 is respectively fixed to a pair of diametrically opposite wall sections 19 a , 19 b or 20 a , 20 b .
- the edge 31 of a wall section 19 , 20 defining a circumferential region of the opening 17 is embodied as a collar 22 extending in the axial direction 15 , which is connected to the outer side of a pipe 8 , 9 possibly by welding.
- the collar 22 of a wall section 19 , 20 projects in the direction of the respective outer end of the corresponding pipe 8 , 9 .
- An axial distance 23 is provided between the two pipes 8 , 9 in the exemplary embodiment shown in FIG. 1 .
- the pipes 8 , 9 expand in the axial direction 15 . Since the end walls 3 , 4 act as anchor points, the pipes 8 , 9 are each lengthened inwards. Accordingly, the wall sections 19 a , 19 b retaining the pipe 9 in the flow direction 24 and the wall sections 20 a , 20 b retaining the pipe 8 in the direction opposite to the flow direction 24 are deflected from the plane 21 of the transverse wall 13 . The variation in length of the pipes 8 , 9 is therefore compensated by the flexible wall sections 19 , 20 . This prevents or at least significantly reduces any deformation of the housing or stressing of the joining seams.
- FIGS. 6 to 8 show an exemplary embodiment where the pipes 8 , 9 passing through the housing 1 (omitted in FIGS. 6 and 7 for reasons of simplicity) are inserted one inside the other.
- the end 10 of the pipe 9 passes through the opening 17 and projects from the side of the transverse wall 13 pointing in the flow direction 24 with an overhang 25 .
- the radially expanded end 12 of the pipe 8 a is positioned on this overhang.
- it is feasible that the pipe ends 10 , 12 abut closely against one another in the fashion of a sliding fit.
- the expanded end 12 of the pipe 8 a is welded onto the collar 22 of the wall sections 20 a , 20 b .
- the radius of curvature 27 of the collar 22 of said wall sections is matched to the outer radius of the expanded pipe end 12 , and is therefore greater than the corresponding radius of curvature 28 of the wall sections 19 a , 19 b (see FIG. 8 ).
- two approximately diametrically opposite wall sections 20 a , 20 b project from the plane 21 of the transverse wall 13 with a region 29 .
- a region 29 extends coaxially in each case to the exhaust gas channel 16 or to the central longitudinal axis 30 of the pipes 8 a , 9 .
- the region 29 runs in a plane parallel to the plane 21 of the transverse wall 13 and goes over into a region 33 running in the plane of the transverse wall 13 with a shoulder 32 running approximately in the axial direction.
- the collar 22 borne by said sections is at a greater distance from the plane 21 of the transverse wall 13 than is the case with the wall sections 19 a , 19 b .
- the pipe 8 can be arranged at a correspondingly greater distance from the plane 21 or a greater axial distance 23 ( FIG. 10 ) can be formed between the pipes 8 , 9 .
- the elastic properties of a wall section 20 a , 20 b vary compared with a wall section 19 a , 19 b which is arranged almost completely in the plane 21 of the transverse wall 13 .
- the ends 10 , 12 of the pipes 8 , 9 are inserted one inside the other, as has already been described above. Accordingly, the radius of curvature 27 of the inner edge of a wall section 20 a , 20 b is greater than the corresponding radius of curvature 28 of a wall section 19 a , 19 b .
- the wall sections 19 a , 19 b allocated to the pipe 9 have a region 29 a which projects from the plane 21 of the transverse wall 13 towards the direction of flow 24 . This region also runs coaxially to the central longitudinal axis 30 .
- the region 29 a can also be described as an S-profile when seen in cross section as in FIG. 14 .
- Its radially inner end section or the end section of the bead 36 forms the collar 22 which is connected to the outer side of the pipe 9 .
- the configuration of the wall sections 19 a , 19 b under discussion can be appropriate if a pipe is made of a material having a relatively high thermal expansion.
- the region 29 a acts like a bellows and ensures a relatively high mobility of a wall section 19 a , 19 b in the axial direction 15 .
- the region 29 a is also compressible in the radial direction to a certain extent so that no stresses can build up in the wall sections 19 a , 19 b when the diameter of the pipe 9 is increased.
- the wall sections 20 a , 20 b are configured like the wall sections in the exemplary embodiment of FIG. 1 to FIG. 5 . It is also feasible that all the wall sections have a region 29 or 29 a or are configured differently from one another in another manner adapted to specific circumstances.
Abstract
A muffler for the exhaust gas system of an automobile has a housing provided with two end walls and a circumferential wall and at least one exhaust gas channel passing therethrough. The muffler assembly also has at least two pipes, which mostly define the exhaust gas channel, which are arranged successively in the flow direction, and whose ends project into the interior of the housing. A transverse wall is provided in the housing, this wall being connected to the circumferential wall on the inside, running transverse to the exhaust gas channel and having an opening passing therethrough, said wall comprising at least two flexible wall sections in the axial direction, each having one edge adjacent to the opening, the ends of the pipes each being held at their outer side by the edge of at least one wall section.
Description
- This application claims the priority, under 35 U.S.C. § 119, of German
patent application DE 10 2005 036 676, filed Aug. 4, 2005; the prior application is herewith incorporated by reference in its entirety. - The invention lies in the automotive technology field and relates, particularly, to a muffler for the exhaust system of an automobile.
- In a design that is frequently encountered, a housing comprising two end walls and a circumferential wall has at least one exhaust gas channel passing therethrough, the exhaust gas channel being formed by two pipes arranged successively in the axial direction, each passing through an end wall and being fixed thereon. The ends of the pipes penetrating into the interior of the housing are usually each fixed to a housing structure, usually to a transverse wall, each pipe end being allocated a separate wall. The inner pipe ends are connected to the transverse walls by welding for example. Since the pipes are in direct contact with the hot exhaust gas, they expand, for example in the initial phase of vehicle operation, more strongly than the housing that is cooled by the airflow. Since the pipes are fixed at the end walls on the one hand and at an internal housing structure on the other hand, a change in length of the pipes brings about a corresponding mechanical loading of the end walls or the housing structures holding the inner pipe ends. As a consequence, the end walls and housing structures can become overstressed. The connection points, for example, the welded seams between the pipes and the end walls are exposed to a large number of alternating loadings when viewed over their service life. In this case, there is the risk that the pipes will become loose from their anchoring, which can result in rattling noises during vehicle operation.
- It is accordingly an object of the invention to provide a muffler assembly for an automobile exhaust system which overcomes the above-mentioned disadvantages of the heretofore-known devices and methods of this general type.
- With the foregoing and other objects in view there is provided, in accordance with the invention, a muffler assembly for the exhaust gas system of an automobile. The novel assembly comprises:
- a housing formed with two end walls and a circumferen-tial wall and having at least one exhaust gas channel passing therethrough
- at least two pipes primarily defining the exhaust gas channel, the pipes being disposed successively of each other in a flow direction and having ends projecting into an interior of the housing;
- a transverse wall disposed in the housing and connected to an inside of the circumferential wall, the transverse wall extending transversely to the exhaust gas channel and having a through opening formed therein;
- the transverse wall being formed of at least two wall sections, the wall sections being flexible in an axial direction and each having an edge adjoining the opening; and
- the ends of the pipes being held at an outer side by a respective the edge of at least one of the wall sections.
- In other words, the objects of the invention are solved by providing a transverse wall in the housing, the wall being connected to the circumferential wall on the inside, running transverse to the exhaust gas channel and having an opening passing therethrough. The wall is formed of at least two wall sections that are flexible in the axial direction, each having one edge adjacent to the opening, wherein the ends of the pipes are each held at their outer side by the edge of at least one wall section. In this embodiment, as in conventional mufflers, a pipe is fixed on the one hand to an end wall and on the other hand to an internal housing structure so that it is held securely and free from rattling both axially and radially. When axial and radial or axial direction and radial direction are talked about here, this definition relates to the longitudinal extension of the exhaust gas channel or to the central longitudinal axis of the pipes defining the exhaust gas channel. Any lengthening or shortening of the pipes caused by temperature variation is now compensated by the flexible wall sections in the axial direction so that the inwardly projecting ends of the pipes can expand freely without welded seams or other connections between the pipes and housing walls or the housing itself being stressed thereby.
- The axial mobility of a wall section is provided in particular by the fact that this is elastically deformable and can thus be bent out from the plane of the transverse wall. A flexible wall section can be formed, for example, by providing zones of weakening, that is areas of smaller sheet metal thickness, running approximately radially in the transverse wall, which act as film hinges. Preferably however, the wall sections are formed by slots which are separated from the remaining wall region at the transverse wall and which therefore extend approximately radially away from the flow-through opening in the direction of the circumferential wall. Such a wall section can therefore bend elastically in the axial direction to a certain extent and thereby compensate for a change in length of a pipe. In the radial direction however, a wall section nevertheless ensures that a pipe is securely retained.
- A further preferred embodiment provides that a wall section comprises a region which extends away from its edge and projects from the plane of the transverse wall. This embodiment allows two pipe ends retained by the transverse wall to be disposed at a greater axial distance from one another. In addition, the elastic properties of a wall section can be influenced by a region of this type.
- The strength of the connection between a wall section and a pipe end can be increased if the edge of a wall section is formed by an axially extending collar, whose radially inwardly pointing side is connected to the outer side of a pipe.
- In order to prevent the axial alignment of a pipe changing in the event of a heat-induced variation in length, the wall sections allocated to a pipe end are distributed uniformly over the circumference of the pipe. In particular, a pipe end is fixed respectively to a pair of diametrically opposite wall sections. Force components acting on the pipe in the radial direction are mutually compensated by said embodiments.
- Other features which are considered as characteristic for the invention are set forth in the appended claims.
- Although the invention is illustrated and described herein as embodied in a muffler for the exhaust system of an automobile, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.
- The construction and method of operation of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
-
FIG. 1 is a section taken through a muffler assembly according to the invention; -
FIG. 2 is a perspective view of a transverse wall seen in the direction of the arrow II inFIG. 1 ; -
FIG. 3 is a plan view onto the transverse wall in the direction of the arrow III inFIG. 2 ; -
FIG. 4 is a perspective view of a transverse wall with pipes fixed thereon; -
FIG. 5 is a longitudinal sectional view of the assembly illustrated inFIG. 4 ; -
FIG. 6 is a perspective view showing a transverse wall with pipes fixed thereon, the two pipes being inserted one inside the other; -
FIG. 7 is a longitudinal sectional view of the assembly illustrated inFIG. 6 ; -
FIG. 8 is a plan view of a transverse wall viewed in the direction of the arrow VIII inFIG. 6 ; -
FIG. 9 is a perspective view of a transverse wall with pipes fixed thereon, the transverse wall comprising two differently configured pairs of wall sections; -
FIG. 10 is a longitudinal sectional view of the assembly illustrated inFIG. 9 ; -
FIG. 11 is a plan view of the transverse wall in the direction of the arrow XI inFIG. 9 ; -
FIG. 12 is a plan view onto the transverse wall viewed in the direction of the arrow XII inFIG. 11 ; -
FIG. 13 is a perspective view of a transverse wall with pipes fixed thereon, with modified wall sections as compared withFIG. 9 ; -
FIG. 14 is a longitudinal sectional view of the assembly illustrated inFIG. 13 ; -
FIG. 15 is a perspective view of the transverse wall viewed in the direction of the arrow XV inFIG. 13 ; and -
FIG. 16 is a plan view onto the transverse wall viewed in the direction of the arrow XVI inFIG. 15 . - Referring now to the figures of the drawing in detail and first, particularly, to
FIG. 1 thereof, there is shown a muffler assembly, or a muffler for short, with ahousing 1 formed of acircumferential wall 2 having a circular cylindrical cross section, for example, and twoend walls end walls circumferential wall 2 by a crimping or beading 5. A welded connection is also feasible at this point. Anopening 7 provided with anextrusion 6 is provided in theend walls openings 7 are each penetrated by anexhaust gas pipe exhaust gas pipes extrusion 6, for example, are welded-on. They are disposed successively in the axial direction and define anexhaust gas channel 16. The ends 10, 12 of thepipes transverse wall 13. Theouter edge 14 of thetransverse wall 13 is bent in theaxial direction 15 and abuts against the inner side of thecircumferential wall 2. Optionally, theouter edge 14 can be fixed to thecircumferential wall 2, for example, by spot welding. At a position corresponding to theopenings 7, thetransverse wall 13 is penetrated by anopening 17. Approximatelyradial slots 18 distributed uniformly over the circumference are inserted in thetransverse wall 13, which slots end at a distance before theouter edge 14 on the one hand and open into theopenings 17 on the other hand. Theslots 18separate wall sections 19, 20 from one another. Thewall sections 19, 20 can be deflected in theaxial direction 15 from theplane 21 of thetransverse wall 13 by elastic deformation. Onepipe end opposite wall sections wall section 19, 20 defining a circumferential region of theopening 17 is embodied as acollar 22 extending in theaxial direction 15, which is connected to the outer side of apipe collar 22 of awall section 19, 20 projects in the direction of the respective outer end of thecorresponding pipe axial distance 23 is provided between the twopipes FIG. 1 . However, it is also feasible, as is shown further below, that the twopipes - If hot exhaust gas flows through a muffler, possibly of the type shown in
FIG. 1 , starting from the cold state in the direction offlow 24, thepipes axial direction 15. Since theend walls pipes wall sections pipe 9 in theflow direction 24 and thewall sections 20 a, 20 b retaining thepipe 8 in the direction opposite to theflow direction 24 are deflected from theplane 21 of thetransverse wall 13. The variation in length of thepipes flexible wall sections 19, 20. This prevents or at least significantly reduces any deformation of the housing or stressing of the joining seams. - FIGS. 6 to 8 show an exemplary embodiment where the
pipes FIGS. 6 and 7 for reasons of simplicity) are inserted one inside the other. Theend 10 of thepipe 9 passes through theopening 17 and projects from the side of thetransverse wall 13 pointing in theflow direction 24 with anoverhang 25. The radially expandedend 12 of the pipe 8 a is positioned on this overhang. In this case, it is feasible that the pipe ends 10, 12 abut closely against one another in the fashion of a sliding fit. However, it can also be advantageous to provide anannular gap 26 between the pipe ends 10, 12. This ensures that the twopipes 8 a, 9 can easily be displaced axially during the entire service life. The expandedend 12 of the pipe 8 a is welded onto thecollar 22 of thewall sections 20 a, 20 b. The radius ofcurvature 27 of thecollar 22 of said wall sections is matched to the outer radius of the expandedpipe end 12, and is therefore greater than the corresponding radius ofcurvature 28 of thewall sections FIG. 8 ). - In the exemplary embodiment shown in FIGS. 9 to 12, two approximately diametrically
opposite wall sections 20 a, 20 b project from theplane 21 of thetransverse wall 13 with aregion 29. Aregion 29 extends coaxially in each case to theexhaust gas channel 16 or to the centrallongitudinal axis 30 of thepipes 8 a, 9. Theregion 29 runs in a plane parallel to theplane 21 of thetransverse wall 13 and goes over into aregion 33 running in the plane of thetransverse wall 13 with ashoulder 32 running approximately in the axial direction. As a result of said configuration of thewall sections 20 a, 20 b, thecollar 22 borne by said sections is at a greater distance from theplane 21 of thetransverse wall 13 than is the case with thewall sections pipe 8 can be arranged at a correspondingly greater distance from theplane 21 or a greater axial distance 23 (FIG. 10 ) can be formed between thepipes wall section 20 a, 20 b vary compared with awall section plane 21 of thetransverse wall 13. - In the exemplary embodiment according to FIGS. 13 to 16, the ends 10, 12 of the
pipes curvature 27 of the inner edge of awall section 20 a, 20 b is greater than the corresponding radius ofcurvature 28 of awall section wall sections pipe 9 have aregion 29 a which projects from theplane 21 of thetransverse wall 13 towards the direction offlow 24. This region also runs coaxially to the centrallongitudinal axis 30. It is substantially formed by twobeads outer bead 35 being convexly curved opposite to the direction offlow 24 and the adjacent radiallyinner bead 36 being convexly curved in the direction offlow 24. Theregion 29 a can also be described as an S-profile when seen in cross section as inFIG. 14 . Its radially inner end section or the end section of thebead 36 forms thecollar 22 which is connected to the outer side of thepipe 9. The configuration of thewall sections region 29 a acts like a bellows and ensures a relatively high mobility of awall section axial direction 15. Theregion 29 a is also compressible in the radial direction to a certain extent so that no stresses can build up in thewall sections pipe 9 is increased. - The
wall sections 20 a, 20 b are configured like the wall sections in the exemplary embodiment ofFIG. 1 toFIG. 5 . It is also feasible that all the wall sections have aregion
Claims (6)
1. A muffler assembly for the exhaust gas system of an automobile, the assembly comprising:
a housing formed with two end walls and a circumferential wall and having at least one exhaust gas channel passing therethrough
at least two pipes primarily defining said exhaust gas channel, said pipes being disposed successively of each other in a flow direction and having ends projecting into an interior of said housing;
a transverse wall disposed in said housing and connected to an inside of said circumferential wall, said transverse wall extending transversely to said exhaust gas channel and having a through opening formed therein;
said transverse wall being formed of at least two wall sections, said wall sections being flexible in an axial direction and each having an edge adjoining said opening; and
said ends of said pipes being held at an outer side by a respective said edge of at least one of said wall sections.
2. The muffler according to claim 1 , wherein one of said wall sections is separated from a remaining wall region of said transverse wall by slots extending outwardly away from said opening.
3. The muffler according to claim 2 , wherein at least one of said wall sections has a region extending away from said edge and projecting away from a plane of said transverse wall.
4. The muffler according to claim 1 , wherein said edge of a respective said wall section is formed by an axially extending collar having a radially inwardly pointing side connected to an outer surface of a respective said pipe.
5. The muffler according to claim 1 , wherein each of said pipe ends has a plurality of wall sections allocated thereto, and said wall sections are distributed uniformly over a pipe circumference.
6. The muffler according to claim 5 , wherein one pipe end is respectively fixed to one pair of diametrically opposite wall sections.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102005036676A DE102005036676A1 (en) | 2005-08-04 | 2005-08-04 | Silencer for the exhaust system of a motor vehicle |
DE102005036676.7 | 2005-08-04 |
Publications (1)
Publication Number | Publication Date |
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US20070029135A1 true US20070029135A1 (en) | 2007-02-08 |
Family
ID=37680877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/499,295 Abandoned US20070029135A1 (en) | 2005-08-04 | 2006-08-04 | Muffler for the exhaust system of an automobile |
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US (1) | US20070029135A1 (en) |
DE (1) | DE102005036676A1 (en) |
Cited By (8)
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US20070227001A1 (en) * | 2004-05-28 | 2007-10-04 | Sango Co,, Ltd. | Method of Producing Metal Tubular Member |
US20070227812A1 (en) * | 2006-04-04 | 2007-10-04 | Thomas Wolf | Muffler |
WO2010063389A1 (en) * | 2008-12-01 | 2010-06-10 | Heinrich Gillet Gmbh | Housing for exhaust gas systems |
US20100290928A1 (en) * | 2008-01-10 | 2010-11-18 | Min-Kyu Jung | Noise reducing device for hermetic type compressor |
WO2011095458A1 (en) * | 2010-02-08 | 2011-08-11 | Heinrich Gillet Gmbh | Exhaust gas muffler |
CN104595158A (en) * | 2013-10-30 | 2015-05-06 | 上海三电贝洱汽车空调有限公司 | Compressor air pressure pulsation regulating device |
US20160017787A1 (en) * | 2013-03-11 | 2016-01-21 | Futaba Industrial Co., Ltd. | Exhaust pipe |
US20230003162A1 (en) * | 2021-06-30 | 2023-01-05 | Purem GmbH | Muffler and method for making the same |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102014112069A1 (en) * | 2014-08-22 | 2016-02-25 | Friedrich Boysen Gmbh & Co. Kg | Silencer for an exhaust system |
Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1995542A (en) * | 1933-11-22 | 1935-03-26 | Haviland Arnold | Universal muffler coupling |
US2634123A (en) * | 1949-11-15 | 1953-04-07 | Ralston Eldon Kipp | Movement multiplier for disk springs |
US3369829A (en) * | 1965-10-15 | 1968-02-20 | William C.N. Hopkins | Flexible connector for fluid conduit systems |
US3650547A (en) * | 1971-03-05 | 1972-03-21 | Reynolds Alex B | Pipe fitting |
US3686747A (en) * | 1968-12-21 | 1972-08-29 | Luigi Bagnulo | Electrically insulating pipe union |
US4291905A (en) * | 1978-12-22 | 1981-09-29 | The Boeing Company | Duct seal |
US4440307A (en) * | 1978-06-30 | 1984-04-03 | The Continental Group, Inc. | Container assembly |
US4513841A (en) * | 1983-04-01 | 1985-04-30 | Toyota Jidosha Kabushiki Kaisha | Muffler for internal combustion engines |
US5477015A (en) * | 1991-05-03 | 1995-12-19 | Maremont Corporation | Vehicular muffler with improved mechanical lock joints |
US5581056A (en) * | 1994-01-20 | 1996-12-03 | Heinrich Gillet Gmbh & Co. Kg | Muffler |
US5676272A (en) * | 1996-03-15 | 1997-10-14 | J.L. Clark, Inc. | Metal container having resilient interface ring |
US5915677A (en) * | 1996-09-09 | 1999-06-29 | Calsonic Corporation | Circular plate spring |
US6199658B1 (en) * | 1998-01-20 | 2001-03-13 | Jb Design, Inc. | Multi-Fold side branch muffler |
US6681888B2 (en) * | 2000-11-23 | 2004-01-27 | Westaflex-Automobile | Silencing apparatus, notably for a turbo engine |
US20060096805A1 (en) * | 2004-11-10 | 2006-05-11 | Michael Staut | Muffler |
US20060251470A1 (en) * | 2003-03-11 | 2006-11-09 | Markus Prause | Joint |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2927758C2 (en) * | 1979-07-10 | 1983-04-28 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Exhaust silencers for internal combustion engines |
-
2005
- 2005-08-04 DE DE102005036676A patent/DE102005036676A1/en not_active Withdrawn
-
2006
- 2006-08-04 US US11/499,295 patent/US20070029135A1/en not_active Abandoned
Patent Citations (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1995542A (en) * | 1933-11-22 | 1935-03-26 | Haviland Arnold | Universal muffler coupling |
US2634123A (en) * | 1949-11-15 | 1953-04-07 | Ralston Eldon Kipp | Movement multiplier for disk springs |
US3369829A (en) * | 1965-10-15 | 1968-02-20 | William C.N. Hopkins | Flexible connector for fluid conduit systems |
US3686747A (en) * | 1968-12-21 | 1972-08-29 | Luigi Bagnulo | Electrically insulating pipe union |
US3650547A (en) * | 1971-03-05 | 1972-03-21 | Reynolds Alex B | Pipe fitting |
US4440307A (en) * | 1978-06-30 | 1984-04-03 | The Continental Group, Inc. | Container assembly |
US4291905A (en) * | 1978-12-22 | 1981-09-29 | The Boeing Company | Duct seal |
US4513841A (en) * | 1983-04-01 | 1985-04-30 | Toyota Jidosha Kabushiki Kaisha | Muffler for internal combustion engines |
US5477015A (en) * | 1991-05-03 | 1995-12-19 | Maremont Corporation | Vehicular muffler with improved mechanical lock joints |
US5581056A (en) * | 1994-01-20 | 1996-12-03 | Heinrich Gillet Gmbh & Co. Kg | Muffler |
US5676272A (en) * | 1996-03-15 | 1997-10-14 | J.L. Clark, Inc. | Metal container having resilient interface ring |
US5915677A (en) * | 1996-09-09 | 1999-06-29 | Calsonic Corporation | Circular plate spring |
US6199658B1 (en) * | 1998-01-20 | 2001-03-13 | Jb Design, Inc. | Multi-Fold side branch muffler |
US6681888B2 (en) * | 2000-11-23 | 2004-01-27 | Westaflex-Automobile | Silencing apparatus, notably for a turbo engine |
US20060251470A1 (en) * | 2003-03-11 | 2006-11-09 | Markus Prause | Joint |
US20060096805A1 (en) * | 2004-11-10 | 2006-05-11 | Michael Staut | Muffler |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070227001A1 (en) * | 2004-05-28 | 2007-10-04 | Sango Co,, Ltd. | Method of Producing Metal Tubular Member |
US7866044B2 (en) * | 2004-05-28 | 2011-01-11 | Sango Co., Ltd. | Method of producing metal tubular member |
US20070227812A1 (en) * | 2006-04-04 | 2007-10-04 | Thomas Wolf | Muffler |
US7617909B2 (en) * | 2006-04-04 | 2009-11-17 | J. Eberspaecher Gmbh & Co. Kg | Muffler |
US8459964B2 (en) * | 2008-01-10 | 2013-06-11 | Lg Electronics Inc. | Noise reducing device for hermetic type compressor |
US20100290928A1 (en) * | 2008-01-10 | 2010-11-18 | Min-Kyu Jung | Noise reducing device for hermetic type compressor |
CN102007296A (en) * | 2008-01-10 | 2011-04-06 | Lg电子株式会社 | Noise reducing device for hermetic type compressor |
WO2010063389A1 (en) * | 2008-12-01 | 2010-06-10 | Heinrich Gillet Gmbh | Housing for exhaust gas systems |
WO2011095458A1 (en) * | 2010-02-08 | 2011-08-11 | Heinrich Gillet Gmbh | Exhaust gas muffler |
US20160017787A1 (en) * | 2013-03-11 | 2016-01-21 | Futaba Industrial Co., Ltd. | Exhaust pipe |
US9523304B2 (en) * | 2013-03-11 | 2016-12-20 | Futaba Industrial Co., Ltd. | Exhaust pipe |
CN104595158A (en) * | 2013-10-30 | 2015-05-06 | 上海三电贝洱汽车空调有限公司 | Compressor air pressure pulsation regulating device |
US20230003162A1 (en) * | 2021-06-30 | 2023-01-05 | Purem GmbH | Muffler and method for making the same |
Also Published As
Publication number | Publication date |
---|---|
DE102005036676A1 (en) | 2007-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |