| 摘要 |
A honeycomb body with internal flow-conducting surfaces, in particular a catalyst body for motor vehicles, consists of layers of metal sheets (1, 2) which are structured, at least in partial regions, and which form the walls of a plurality of fluid-conducting channels (74a, 74b). Openings (72) in at least some of the channel walls are associated with flow-conducting surfaces (71) which run obliquely to the channel wall. By means of these flow-conducting surfaces (71), partial flows of the fluid in the individual channels (74a, 74b) can be diverted into neighbouring channels. This results in reduced boundary layer effects and increased overall contact between the fluid and the channel walls. In addition, a uniform flow profile in the honeycomb body can be obtained by systematic arrangement of flow-conducting surfaces (71). When the honeycomb body is used as a support for catalytically active material in exhaust gas systems in motor vehicles, the weight and service life of the material are improved, as well as the reaction rate and the starting behaviour. |
