| 摘要 |
<p>The invention relates to a decoupling element, in particular for exhaust gas systems, for use with an injection device (14) for injecting a reductant, such as urea, comprising a corrugated metal bellows (7) and a flow-conducting element (9, 23) arranged inside the bellows (7). The outer diameter (D1) of the flow-conducting element is smaller than the inner diameter (D2) of the bellows (7). According to the invention, the flow-conducting element (9, 23) divides the interior of the bellows (7) into an inner core flow path for a core flow (16) of the exhaust gas flow and an outer jacket flow path for a jacket flow (17) of the exhaust gas flow. The invention further relates to a method, by means of which exhaust gas flowing in an exhaust gas flow flows through a flow-conducting element arranged at a final radial distance inside the bellows, said exhaust gas being divided into a core flow and a jacket flow, whereby the wetting of the bellows and thus the deposition of urea inside the bellows corrugations are avoided.</p> |
