Muffler

Abstract

A connection between a plate and a pipe wherein the pipe passes through an opening in the plate, and wherein the plate has a spring-elastic tongue at the opening which is fixedly connected to the pipe.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

In schematic diagrams

FIG. 1 shows a frontal view of an inside plate according to an exemplary embodiment of the invention with spring-elastic tongues in the area through-openings,

FIG. 2 shows a perspective view of the inside plate,

FIG. 3 shows an inside plate with inside pipes passing through it,

FIG. 4 shows a detailed view of a wall of a spring-elastic tongue formed on the inside plate.

Claims

1. A muffler for a line carrying gas and airborne sound, for an exhaust system of an internal combustion engine, said muffler comprising: a housing in which an inside pipe is arranged for carrying gas in the interior of the housing; andan inside plate having an opening, said inside plate positioned in said housing and reinforcing said housing;

2. The muffler according to claim 1, wherein said spring-elastic tongue is formed by free cutting or free punching on said inside plate.

3. The muffler according to claim 1, wherein said spring-elastic tongue on its fixed end runs essentially parallel to said inside plate.

4. The muffler according to claim 1, wherein at its free end, said tongue is attached to said inside pipe in a second plane which is angled to the plane in which the inside plate extends.

5. The muffler according to claim 1, wherein at its free end, said tongue is attached to said inside pipe in a second plane which is at a distance from the plane in which the inside plate extends.

6. The muffler according to claim 1, wherein said inside plate separates at least two chambers of said muffler from one another.

7. The muffler according to claim 1, wherein said inside plate separates at least one absorption chamber and one expansion chamber from one another in said muffler.

8. The muffler according to claim 1, wherein side walls of the tongue run in a plane arranged at a distance from said inside plate.

9. The muffler according to claim 1, wherein walls of said inside plate run in a plane arranged at a distance from said inside plate.

10. The muffler according to claim 1, wherein slots disposed between said tongue and said inside plate are adapted to reduce leakage of absorbent material from the absorption chamber.

11. The muffler according to claim 1, wherein said tongue, said inside plate and the inside pipe are arranged so that slots formed between the tongue and the inside plate taper due to thermal expansion during operation of the muffler.

12. The muffler according to claim 1, wherein one slot end between the tongue and the inside plate is free of notching.

13. The muffler according to claim 1, wherein said free end of said tongue is welded to the inside pipe.

14. The muffler according to claim 13, wherein a bend angle between said tongue and said inside plate is selected according to a main direction of absorption of thermal stresses.

15. A connection between a plate and a pipe wherein the pipe passes through an opening in the plate, andwherein the plate has a spring-elastic tongue at the opening which is fixedly connected to the pipe.

16. The connection according to claim 15, wherein said tongue is formed by free cutting or free punching on the inside plate.

17. The connection according to claim 15, wherein said tongue runs essentially parallel to the inside plate on its fixed end.

18. The connection according to claim 15, wherein at its free end, said tongue is attached to said pipe in a second plane which is angled and at a distance from the plane in which said inside plate extends.

19. The connection according to claim 15, wherein said inside plate separates at least two chambers of a muffler from one another.

20. The connection according to claim 15, wherein said inside plate separates at least one absorption chamber and one expansion chamber from one another in a muffler.

21. The connection according to claim 15, wherein side walls of the tongue and the walls of the inside plate adjacent thereto run in a plane arranged at a distance from the inside plate.

22. The connection according to claim 15, wherein slots are disposed between said tongue and said inside plate and dimensioned to reduce leakage of absorbent material from the absorption chamber.

23. The connection according to claim 15, wherein said tongue, said inside plate and said pipe are arranged so that slots formed between said tongue and said inside plate taper due to thermal expansion during operation of the muffler.

24. The connection according to claim 15, wherein one slot between said tongue and said inside plate end is free of notching.

25. The connection according to claim 15, wherein said free end of said tongue is welded to said inside pipe.

26. The connection according to claim 15, wherein a bend angle between the tongue and the inside plate is selected according to a main direction of absorption of thermal stresses.