SELF-HEATING DIESEL PARTICULATE FILTER

摘要

PROBLEM TO BE SOLVED: To provide a diesel particulate filter with high safety, having less ash of particularities yielding high regeneration rate, while there is no abnormality such as cracks even after regeneration. SOLUTION: On both end faces of a filter main body, which is made of porous conductive ceramics, an electrode layer 2 is provided except for the central portion thereof. Particularly, the ratio of the electrode layer with respect to the area of filter body end surface 1 is set at 0.4 to 0.8. The porous conductive ceramics is made of silicon carbide.