| 摘要 |
The exhaust gas flow paths (18) included between surfaces of the layers of material (17), form a succession of concave and convex regions (25) from inlet to outlet. - The configuration comprises wavy peaks and valleys. They run in straight lines in each plane. The corrugated material is stacked in layers, at an angle exceeding 10 deg. between successive sheets, contacting each other at points. Inlets and outlets run along a line transverse to the flow direction. Diverse conventional joining methods are used. Spacers are included. Alternative dimensions and configurations are detailed. A fibrous woven fabric, fleece or braid is included, or a powder filling, all permeable to exhaust gases. Further examples include a foam or sinter. Further variants and developments based on the foregoing principles are described. - An INDEPENDENT CLAIM is included for the corresponding method of manufacture. |
