Damping element for decoupling elements, in particular for membrane bellows
A decoupling element for a conduit includes an interior hose made of metal and a corrugated exterior hose surrounding the interior hose, with a hollow-cylindrical gap formed between the corrugated exterior hose and the interior hose. At least one damping element is arranged in the gap, with the damping element(s) constructed of a woven fabric made of a high-temperature-resistant material and having an outside surface with at least one bulge, wherein the bulge positively engages with a corrugation of the exterior hose. The exterior hose may be a membrane bellows. The woven fabric may be a metallic material. The at least one damping element covers, along the rotation axis, preferably a proportional length of at least 20% of the hollow-cylindrical gap and has preferably a static stiffness in the radial direction of less than 100 N/mm.
1. A damping element constructed for arrangement in a corrugated exterior hose, the damping element comprising a woven fabric made of a high-temperature-resistant material and having an outside surface with at least one bulge, said bulge engaging with a corrugation of the exterior hose.
2. A decoupling element for a conduit, comprising:
a) an interior hose made of metal;
b) a corrugated exterior hose surrounding the interior hose, with a gap formed between the corrugated exterior hose and the interior hose; and
c) at least one damping element arranged in the gap and comprising a woven fabric made of a high-temperature-resistant material and having an outside surface with at least one bulge, said bulge positively engaging with a corrugation of the exterior hose.
3. The decoupling element of claim 2 , wherein the conduit is an exhaust conduit for a motor vehicle.
4. The decoupling element of claim 2 , wherein the interior hose is a wound metal hose.
5. The decoupling element of claim 2 , wherein the exterior hose is a metal bellow.
6. The decoupling element of claim 5 , wherein the exterior hose is a membrane bellow.
7. The decoupling element of claim 2 , wherein the bulge is formed to extend at least partially circumferentially about an axial direction of the exterior hose.
8. The decoupling element of claim 2 , wherein the damping element is at least in sections rotationally symmetric or substantially cylindrical.
9. The decoupling element of claim 2 , wherein the damping element comprises a metal core.
10. The decoupling element of claim 2 , wherein the damping element is pretensioned with respect to the interior hose or the exterior hose, or both.
11. The decoupling element of claim 2 , wherein the damping element comprises at least one material selected from the group consisting of:
woven elements of stainless steel fibers and graphite fibers;
woven elements of stainless steel fibers and absorbing fibers with a deposit of graphite;
precursor-coated fabric, wherein the base material is aluminum oxide and/or glass-like;
a pre-ceramic polymer of solid, paste-like or foam-like consistency;
a fiber-reinforced woven fabric of graphite tape;
a metal-textile composite material;
needle-punched non-woven material;
textured E-glass;
fabric made of ceramic fibers, temperature-resistant support fibers and stainless steel wires; and
polycrystalline or hybrid expanded mats.
12. The decoupling element of claim 2 , wherein the damping element extends over at least 20% of an axial length of the exterior hose.
13. The damping element of claim 1 , wherein the bulge is formed to extend at least partially circumferentially about an axial direction of the exterior hose.
14. The damping element of claim 1 , wherein the damping element is at least in sections rotationally symmetric or substantially cylindrical.
15. The damping element of claim 1 , comprising a metal core.
16. The damping element of claim 1 , comprising at least one material selected from the group consisting of:
woven elements of stainless steel fibers and graphite fibers;
woven elements of stainless steel fibers and absorbing fibers with a deposit of graphite;
precursor-coated fabric, wherein the base material is aluminum oxide and/or glass-like;
a pre-ceramic polymer of solid, paste-like or foam-like consistency;
a fiber-reinforced woven fabric of graphite tape;
a metal-textile composite material;
needle-punched non-woven material;
textured E-glass;
fabric made of ceramic fibers, temperature-resistant support fibers and stainless steel wires; and
polycrystalline or hybrid expanded mats.
17. The decoupling element of claim 2 , comprising two or more damping elements.
18. The decoupling element of claim 2 , wherein at least one damping element is arranged on an axial end of the decoupling element.