DE102005031944B4 - Modular silencer for the exhaust system of a motor vehicle - Google Patents

Abstract

Modular silencer for the exhaust system of a motor vehicle with
- A silencer housing and
A closure element which at least partially connects the silencer housing and at least one tubular element to one another,
characterized in that
the silencer housing (1) has a number of axial graduations (7, 7 ', 7'') of different dimensions (D1, D2, D3) and perpendicular to its axis (A) at one of these graduations (7, 7', 7 '') is separable, so that the front side one of the various possible dimensions (D1, D2, D3) is present, and
the end element (2a, 2b, 2c, 2d) corresponds to the respective present frontal dimension (D1, D2, D3) of the silencer housing (1).

Description

The The present invention relates to a modular muffler for the exhaust system a motor vehicle with a silencer housing and a closing element, which the silencer housing and at least partially interconnects a tubular element at least partially.

From the pamphlets US 1,995,840 and US 2,025,271 is in each case a generic muffler with a muffler housing, a connecting element and a tailpipe known. There, the connecting element has a connecting flange for attachment to the muffler housing and a connecting piece for fastening a tail pipe, wherein the connecting flange is adapted to the always uniform muffler housing and the diameter of the connecting piece is selected in dependence on the various possible dimensions of the tailpipe.

In addition, in the document GB 721,656 discloses a muffler housing which has at one or both ends in each case axial gradations of different dimensions. These axial gradations are welded together, riveted or screwed and separated depending on the desired diameter. Due to the individual separation of this universal muffler housing is adapted to the respective exhaust system of a motor vehicle.

outgoing from this prior art, it is an object of the present invention to provide an improved modular muffler that still can be adapted more flexibly to different specifications and the nevertheless trained on a small number of as simple as possible Parts based, which easily and inexpensively to the particular desired configuration can be adjusted.

Is solved this task by the silencer housing a Number of axial gradations of different dimensions and separable perpendicular to its axis at one of these gradations is, so that frontally one of the various possible Dimensions present, and by the end element with the respectively present frontal dimension of the muffler housing corresponds. By this feature combination is a modular muffler created in which not only the final element, but also the muffler housing variable is. For this purpose, several different end elements are kept ready, while one and the same silencer housing according to the invention the number of its gradations through a simple editing process is variable. The appropriate terminating element is according to the frontal dimension of the stepped muffler housing and according to the number and size of the required pipe elements selected and with the silencer housing as well connected to the pipe element or the pipe element. This allows a extraordinary Flexibility at the production of the silencer for the Exhaust system of a motor vehicle.

Advantageous are the gradations of the muffler housing concentric arranged to its axis and / or concentric with each other, so that within the muffler housing or within or provided on the respective associated termination elements Positions for the pipe elements in all possible Maintain configurations of the modular silencer as far as possible can be. This can also be for certain Maintained positions of the tubular elements designed inner structure of the muffler as far as possible become.

Especially Advantageously, the gradations of the muffler housing in equidistant steps, so that the modular muffler with a manageable Number of different completion elements and yet a larger area Can be covered by frontal dimensions of the muffler housing.

Is appropriate the silencer housing off an upper shell and a lower shell formed. By this feature is a simple manufacture of the silencer housing with a number of gradations realized and will also also the attachment of the substantially formed as a flat plate End element on or facilitated in the muffler housing.

According to one The first alternative spills over End element the front side of the bivalve silencer housing and according to a second alternative is the end element in the front side in the Silencer housing inserted. For both alternatives, the terminator may then, for example simply by means of a welding, Adhesive, riveted and / or flared connection be attached.

moreover the end element can also overlap the at least one tubular element or be inserted in the tubular element, so that the closing element also by means of a simple welded joint on the circumference of the at least one pipe element is attached.

Preferably, the at least one pipe element is an intermediate pipe of the exhaust system, so that an input-side adaptation of the modular Silencer can be done.

Especially Preferably, the at least one pipe element but a tail pipe of Exhaust system. Because specifically on the output side of the muffler will be depending on the vehicle very different pipe elements used the not only acoustic criteria, but also optical criteria suffice have to.

In order to is finally a modular silencer created with a muffler housing, two End elements, at least one intermediate tube and at least a tailpipe is universally applicable.

The The present invention will be described with reference to the following Drawing figures closer explained. Show it:

1 a sectional partial view of the modular muffler;

2a a first view of the front side of the muffler 1 according to a first embodiment;

2 B a second view of the muffler according to a second embodiment;

2c a third view according to another embodiment; and

2d another view of another embodiment.

The in 1 halves shown modular muffler for the exhaust system of a motor vehicle comprises a muffler housing 1 , a graduation element 2a . 2 B . 2c . 2d and at least one pipe element 3 . 3 ' . 3 '' ,

The silencer housing 1 is substantially cylindrical in shape and consists of an upper shell 4 and a lower shell 5 , Thereby subdivide the upper shell 4 and the lower shell 5 the silencer housing 1 parallel to its axis A into two approximately equal halves. Connected are the upper shell 4 and the lower shell 5 simply by means of a weld along the sides 6 , The silencer housing 1 has three gradations towards its front 7 . 7 ' . 7 '' with continuously reduced dimensions or diameters D1, D2, D3, so that the muffler housing 1 depending on which of the three gradations 7 . 7 ' . 7 '' it is separated, for example by means of a sawing process on its front side one of these different dimensions D1, D2, D3 has.

The final element 2a . 2 B . 2c or 2d at least partially forms the transition from the muffler housing 1 to the at least one tubular element 3 . 3 ' . 3 '' , It is as a substantially flat plate with at least one inner receiving opening 8th . 8th' . 8th'' and / or at least one edge-side receiving recess 9 . 9 ' formed. There are different finishing elements 2a . 2 B . 2c or 2d available, which are adapted to the dimensions D1, D2 or D3 and a number of receiving openings 8th . 8th' . 8th'' and / or recording savings 9 . 9 ' Wear based on the size and number of tubular elements 3 . 3 ' . 3 '' are coordinated.

In 2a . 2 B . 2c and 2d are different views on the front side of the muffler housing 1 shown.

The silencer housing 1 was according to 2a separated along the dividing line L1 and has the dimension D1, was according to 2 B separated along the dividing line L2 and has the dimension D2 and was according to 2c not or separated along the line L3 and therefore has the dimension D3. The respective assigned final elements 2a . 2 B or 2c , are on the different dimensions D1, D2 and D3 of the three gradations 7 . 7 ' . 7 '' tuned and have a number of approximately central or centrally symmetrical receiving openings 8th , 8th' . 8th'' for one, two or three pipe elements 3 . 3 ' . 3 '' in, in the embodiments shown also possible positions of the receiving openings 8th . 8th' . 8th' for further variants with a different number of tube elements 3 . 3 ' . 3 '' are indicated deleted.

And according to the embodiment 2d This was a slightly different cross section having silencer housing 1 separated along the dividing line L2 and has the dimension D2. The associated completion element 2d is matched to the dimension D2 and has a number of edge-side receiving recesses 9 . 9 ' for one or two pipe elements 3 . 3 ' on.

The arrangement of the receiving openings 8th . 8th' . 8th'' and / or the recording cutbacks 9 . 9 ' inside the muffler housing 1 or in or on the closing element 2a . 2 B . 2c . 2d does not necessarily have to be centered or centrally symmetrical.

The pipe elements 3 . 3 ' . 3 '' are in the embodiment shown in simplified form 1 designed as a simple straight tubes, which the exhaust gas from the muffler housing 1 lead to the rear of the vehicle. For example, depending on the engine of the motor vehicle, a single pipe element 3 , two pipe elements 3 . 3 '' or possibly also three pipe elements 3 . 3 ' . 3 '' be provided, it is quite possible that a muffler housing 1 or a conclusion element 2a . 2 B . 2c . 2d a number of tubular elements 3 . 3 ' . 3 '' associated with different cross sections.

Thus, the silencer housing 1 for a large number of mufflers are manufactured uniformly and by a subsequent frontal separation process, by selecting a suitable end element 2a . 2 B . 2c . 2d and by using the required number of identical or differently formed tubular elements 3 . 3 ' . 3 ' be confectioned to a variety of variants.

Of course, the axial gradations 7 . 7 ' . 7 '' of the muffler housing 1 be provided both on the output side and on the input side. Ideally, then the output side and input side even the same final elements 2a . 2 B . 2c . 2d Usable to use with a uniform muffler body 1 and a manageable number of different completion elements 2a . 2 B . 2c . 2d to realize an even more individualization of the modular silencer. The pipe elements 3 . 3 . 3 '' Accordingly, then form a tailpipe and / or an intermediate pipe of the exhaust system.

1

muffler housing

2a, 2b, 2c, 2d

termination element

3, 3 ', 3' '

tube element

4

Upper shell

5

subshell

6

Weld

7, 7 ', 7' '

gradation

8th, 8 ', 8' '

receiving opening

9 9 '

receiving recess

A

Axis of 1

D1, D2, D3

diameter of 1

L1, L2, L3

parting line

Claims (12)

Modular silencer for the exhaust system of a motor vehicle with - a silencer housing and - a closure element which at least partially connects the silencer housing and at least one tubular element, characterized in that the silencer housing ( 1 ) a number of axial graduations ( 7 . 7 ' . 7 '' ) of different dimensions (D1, D2, D3) and perpendicular to its axis (A) at one of these graduations ( 7 . 7 ' . 7 '' ) is detachable, so that the front side of one of the various possible dimensions (D1, D2, D3) is present, and the closing element ( 2a . 2 B . 2c . 2d ) with the respective present frontal dimension (D1, D2, D3) of the silencer housing ( 1 ) corresponds. Silencer according to claim 1, characterized in that the closing element ( 2a . 2 B . 2c . 2d ) is formed as a substantially flat plate and at least one receiving opening ( 8th . 8th' . 8th'' ) and / or at least one recording recess ( 9 . 9 ' ), which with the at least one tubular element ( 3 . 3 ' . 3 '' ) corresponds. Silencer according to claim 1 or 2, characterized in that the gradations ( 7 . 7 ' . 7 '' ) of the muffler housing ( 1 ) are arranged concentrically to its axis (A). Silencer according to one of claims 1 to 3, characterized in that the gradations ( 7 . 7 ' . 7 '' ) of the muffler housing ( 1 ) are arranged concentrically with each other. Silencer according to one of claims 1 to 4, characterized in that the gradations ( 7 . 7 ' . 7 '' ) of the muffler housing ( 1 ) take place in equidistant steps. Silencer according to one of claims 1 to 5, characterized in that the silencer housing ( 1 ) from an upper shell ( 4 ) and a lower shell ( 5 ) is formed. Silencer according to one of claims 1 to 6, characterized in that the closing element ( 2a . 2 B . 2c . 2d ) the bivalve silencer housing ( 1 ) overlaps. Silencer according to one of claims 1 to 6, characterized in that the closing element ( 2a . 2 B . 2c . 2d ) in the two-shell muffler housing ( 1 ) is inserted. Silencer according to one of claims 1 to 8, characterized in that the closing element ( 2a . 2 B . 2c . 2d ) the at least one pipe element ( 3 . 3 ' . 3 '' ) overlaps. Silencer according to one of claims 1 to 8, characterized in that the closing element ( 2a . 2 B . 2c . 2d ) into the at least one tubular element ( 3 . 3 ' . 3 '' ) is inserted. Silencer according to one of claims 1 to 10, characterized in that the at least one pipe element ( 3 . 3 ' . 3 '' ) is a tailpipe of the exhaust system. Silencer according to one of claims 1 to 11, characterized in that the at least one pipe element ( 3 . 3 ' . 3 '' ) an intermediate pipe the exhaust system is.