EP0913572A2 - Intake silencer - Google Patents

Abstract

The air intake noise suppresser has a housing for the sound waves to be dampened within it, coupled (2) to the medium which carries the sound waves. The housing is of two identical half-sections (1), with half-rings (4,6) and webs (5) at the bonding point and matching each other. Each housing half-section (1) has a coupling connection (2).

Description

State of the art

The invention relates to an intake silencer with a damper volume for the intake system of an internal combustion engine according to the generic term of claim 1.

For example, a silencer is generally known from US Pat. No. 2,517,623, which is a cylindrical housing, each with a connection for the inlet and has an outlet of an air flow to be damped. The structure Such a housing is often very complex geometrically the connection of the external supply lines and optimal sound absorption to reach.

Task

The invention has for its object a silencer of the beginning mentioned type so that it is easily manufactured and assembled can be.

Advantages of the invention

The muffler according to the invention is advantageously suitable starting from of the generic type, the task with the characteristic Features of the main claim to solve. By that Housing is composed of two identical housing halves, can with a single manufacturing tool for both halves created a housing that has a volume determined for optimal sound absorption. Each half of the housing carries one of the connections in an identical manner, so that one inlet and one identical in dimensions Outlet is realized.

To create a housing that also has a stronger effect on the parts Withstands vibrations during operation, the connection points are more advantageous Way constructed on each of the housing halves so that after the fixed Joining each other overlapping overlaps arise.

A tight and statically firm connection of the housing halves can easily be achieved can be achieved in that on each half of the circumference of the housing halves in this area encircling half rings and in the middle overall circumferential web is arranged. The fixed overlap takes place after the assembly by the correspondingly adjacent to each other Bridges and the overlapping half rings of the opposite Half of the housing.

The two assembled housing halves are at the junction welded together on the webs, so that the invention Muffler, for example, in the intake tract of an internal combustion engine can be installed in a motor vehicle.

drawing

Figur 1 eine Ansicht einer Gehäusehälfte eines Ansauggeräuschdämpfers;

Figur 2 eine Ansicht und einen Teilschnitt durch ein zusammengesetztes Gehäuse;

Figur 3 einen Schnitt durch die Verbindungsstelle der beiden Gehäusehälften gemäß der Schnittkennzeichnung y aus Figur 2;

Figur 4 einen Schnitt durch die Verbindungsstelle der beiden Gehäusehätten gemäß der Schnittkennzeichnung x aus Figur 2 und

Figur 5 eine Schnitt durch die Verbindungsstelle der beiden Gehäusehälften gemäß der Schnittkennzeichnung z aus der Figur 2.

An embodiment of the intake silencer according to the invention is explained with reference to the drawing. Show it:

Figure 1 is a view of a housing half of an intake silencer;

Figure 2 is a view and a partial section through an assembled housing;

FIG. 3 shows a section through the connection point of the two housing halves according to the section marking y from FIG. 2;

Figure 4 shows a section through the connection point of the two housing according to the section marking x from Figure 2 and

5 shows a section through the connection point of the two housing halves according to the section marking z from FIG. 2.

Description of the embodiment

In Figure 1 is a housing half 1 of an intake silencer for the Intake tract of an internal combustion engine shown. The housing half 1 has a connection 2 and a connection point 3, at which on one Half of the circumference half rings 4 and 6 and a circumferential on the entire circumference Web 5, for example a welding ring, is arranged.

The circumferential web 5 lies in the middle between the two half rings 4 and 6, where they exist. The two half rings 4 and 6 are here higher than the circumferential web 5, so that these are two superimposed Can enclose webs 5, as can be seen from Figure 3.

FIG. 2 shows a composite housing made up of two identical housing halves 1 can be seen, the two housing halves 1 being completely identical; the housing half 1 corresponding to FIG. 3 can be seen from FIG. 2 shows the connection 2 and the connection point 3 in partial section shown. The half rings 4 and 6 (Figure 3) and half rings 1 and 8 (Figure 4) as well as the circumferential web 5 each engage both Halves into each other in such a way that especially after welding a firm cohesion of the two housing halves is guaranteed (Figure 5).

The circumferential webs 5 as welding rings provide the complete seal here of the housing with the housing parts 1, the half rings 4 and 6 as well as 7 and 8 over the welded connection and through the 180 ° twisted assembly of the two housing halves 1 thus arises here an inner and outer annular shield of the welded joint.

Reference list

1 =

Half of the housing

2 =

connection

3 =

Liaison

4.6; 7.8 =

half of the housing half circumferential half rings

5 =

over the entire circumference of the respective housing half all-round bridge

Claims (4)

Intake silencer, with a housing whose internal volume is designed to dampen predetermined sound waves and each with a connection (2) for coupling the inflowing and outflowing medium carrying the sound waves , characterized in that the housing is composed of two housing halves (1) of identical design, each housing half (1) carrying one of the connections (2). Intake silencer according to claim 1, characterized in that the connection point (3) on each of the housing halves (1) is constructed in such a way that after the fixed assembly, interlocking overlaps absorb the pressure forces caused by the sound waves. Intake silencer according to claim 2, characterized in that a half ring (4, 6, 7, 8) encircling this area is arranged on each half circumference of one of the housing halves, and a web (5) encircling the center is arranged between them and that the overlapping takes place after the joining by the respectively corresponding webs (5) and overlapping half rings (4,6,7,8) of the opposite housing half (1). Intake silencer according to one of the preceding claims, characterized in that the two assembled housing halves (1) are welded together at the connection point (3) with the webs (5).

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