| 摘要 |
<p>A metal honeycomb body having an axial length (L) and consisting of sheet metal layers (1; 10, 11) which are structured such that a fluid, especially the exhaust gas of an internal combustion engine, can flow through the honeycomb body in a direction of flow (S) from one incoming flow front face (12) to an outgoing flow front face (13). The sheet metal layers (1; 10, 11) are provided with a plurality openings (6), at least in partial areas thereof. The honeycomb body has holes (6) in all of the sheet metal layers (1; 10, 11) in a partial volume (T) of at least 55 % of the axial length (L) thereof and at a radial dimension of 20 mm.The holes (6) have respectively a surface of 1 -120 mm<2>; the surface of the sheet metal layers in the partial volume (T) is reduced by the holes (6) by 10-80 %, preferably 35-50 % in relation to a sheet metal layer without any holes; the distance (R2,R3) of the partial volume (T) to the front faces (12, 13) of the honeycomb is such that no holes come into contact with or overlap with the front-face edges of the sheet metal layers.</p> |
