| 摘要 |
<p>The invention concerns a method for eliminating particles (21) contained in a gas stream (22) with a gas-permeable filtering layer (23), having in the direction of the layer thickness (12), sectional regions (10) with a parameter of different values. Said parameter concerns at least the porosity (7), the diameter (8) of the fibers (4) or the proportion of fibers of the filtering layer (23). The method is characterized in that the gas stream (22) is distributed into sectional gas streams (24), which are guided, in each case, through different sectional regions (10) of the filtering layer (23). The invention also concerns fibrous layers, particulate filters, exhaust gas systems and vehicles based on said method.</p> |
