Exhaust pipe with hollow conical catalyst carrier bodies

摘要

In exhaust pipes (4, 6) with catalyst bodies (1) incorporated in an expanded section (2), the diffuser (3) providing the transition can be designed with a larger opening angle alpha and therefore a smaller length 1 if hollow conical catalyst bodies are used which extend into the diffuser with their tip directed against the flow, without any significant impairment of the flow conditions occurring. The dimension x by which the tip of the first catalyst body is arranged downstream of the start of the diffuser may be -5 to +30 mm. <IMAGE>