A decoupling element (11) for use with exhaust-gas systems, including an at least partially corrugated bellows (13) having at least two ends in the form of an inlet (E) and an outlet (A) for the flow (S) of the exhaust gas through the decoupling element (11). A filter element (12′) for filtering the
A decoupling element (11) for use with exhaust-gas systems, including an at least partially corrugated bellows (13) having at least two ends in the form of an inlet (E) and an outlet (A) for the flow (S) of the exhaust gas through the decoupling element (11). A filter element (12′) for filtering the exhaust-gas flow (S) is arranged at least partially in the interior (I) of the decoupling element (11) and the filter element (12′) has a self-supporting construction, in particular, without carrier and/or support bodies.
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1. Decoupling element (1, 11) for use with exhaust-gas systems, comprising an at least partially corrugated bellows (3, 13) having at least two ends that include an inlet (E) and an outlet (A) for a flow (S) of exhaust gas through the decoupling element (1, 11), and a filter element (12′) for filter
1. Decoupling element (1, 11) for use with exhaust-gas systems, comprising an at least partially corrugated bellows (3, 13) having at least two ends that include an inlet (E) and an outlet (A) for a flow (S) of exhaust gas through the decoupling element (1, 11), and a filter element (12′) for filtering the exhaust-gas flow (S) is arranged at least partially in an interior (I) of the decoupling element (1, 11), the filter element (12′) has a construction that is at least one of self-supporting, without carrier bodies or without support bodies, the filter element (12′) is constructed and arranged in the decoupling element (1, 11) to allow throughflow of the exhaust-gas flow (S) in a radial direction and in an axial direction, the filter element has a filter tip (121) which is turned to face the inlet (E); and the filter element (12′) has a bag-shaped construction with an annular base and a bag-shaped body that tapers from the annular base to a linear end that forms the filter tip (121). 2. The decoupling element according to at least claim 1, wherein the filter element (12′) without carrier or support bodies is fixed in the decoupling element (1, 11). 3. The decoupling element according to at least claim 1, wherein the filter element (12′) has a construction such that at least 70% of the surface of the filter element is made from permeable filter material. 4. The decoupling element according to at least claim 1, wherein the filter element (12′) is made from a meshwork, a metal non-woven material, a metal pleat, or a square meshwork. 5. The decoupling element according to at least claim 1, wherein the annular base (122) of the filter opposite the filter tip (121) faces the outlet (A) of the decoupling element (11). 6. The decoupling element according to at least claim 4, wherein the filter element (12′) is fixed only in a region of the outlet (A) of the decoupling element (11) with the annular base (122) on the decoupling element. 7. The decoupling element according to at least claim 1, wherein the filter element (12′) is constructed so that the decoupling element (1, 11) has a pressure loss in a range of between approximately 3 and 30 mbar for a temperature of the exhaust gas on an order of magnitude of approximately 250° C., for a mass flow of the exhaust gas in a range from 40-80 kg/h, and also for an at least approximately 90% filtering of particles of a particle size between 50 and 500 μm contained in the exhaust gas. 8. The decoupling element according to claim 1, wherein the filter element (12′) is constructed so that the decoupling element (1, 11) has a pressure loss in a range of between approximately 3 and 20 mbar for a temperature of the exhaust gas on the order of magnitude of approximately 250° C., for a mass flow of the exhaust gas in a range of 40-80 kg/h, and also for an at least approximately 90% filtering of particles of a particle size between 50 and 500 μm contained in the exhaust gas. 9. The decoupling element according to at least claim 1, wherein the filter element 12′) is constructed such that the filtering of particles of a particle size between 95 and 105 μm contained in the exhaust gas on an order of magnitude of approximately 99%, and the decoupling element (1, 11) has a pressure loss in a range of between approximately 10 and 13 mbar for a temperature of the exhaust gas on an order of magnitude of approximately 250° C., for a mass flow of the exhaust gas on an order of magnitude of approximately 80 kg/h, as well as for an approximately 99% filtering of particles of a particle size between 95 and 105 μm contained in the exhaust gas. 10. The decoupling element according to at least claim 1, wherein the filter element (12′) is arranged coaxial to the bellows in the decoupling element (1, 11). 11. The decoupling element according to at least claim 1, wherein the decoupling element has a device for charge detection that measures a pressure difference across the decoupling element. 12. The decoupling element according to at least claim 1, wherein the decoupling element includes a device for changing the exhaust-gas flow, comprising an exhaust-gas flap that is arranged in a region of the inlet of the decoupling element. 13. The decoupling element according to at least claim 1, wherein the decoupling element has a device for cooling the filter surface. 14. The decoupling element according to claim 8, wherein the filter element (12′) is constructed so that the pressure loss is in a range of between approximately 5 and 15 mbar.
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이 특허에 인용된 특허 (8)
Onodera, Takao; Haseyama, Takashi; Watanabe, Yoshinobu; Iwashita, Takuro; Hagio, Kenji; Mashiko, Tatsuo, Control method of exhaust gas purification system and exhaust gas purification system.
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