| 摘要 |
A catalytic converter configuration for exhaust gas systems of motor vehicles includes a housing surrounding at least two substantially successively disposed catalyst carrier bodies each having axial channels with normal cross-sectional areas. The first catalyst carrier body has at least two or more through-flow apertures running parallel to the axial channels and having second cross-sectional areas substantially larger than the first cross-sectional areas. A device and a method are provided for manufacturing a catalyst carrier body, in particular the first catalyst carrier body, from at least one stack of a multiplicity of at least partly structured sheet metal layers forming a multiplicity of channels through which a fluid can flow. A fork-like twisting device is rotatable about a central axis, engages each stack and is substantially surrounded by a mold. Active winding spindles are disposed on a carrier of the twisting device. The spindles can be brought into engagement with the at least one stack and are movable for expanding the twisted stack, in particular for forming through-flow apertures within the catalyst carrier body.
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