| abstract |
Provided is a honeycomb structure having excellent heat dispersibility during heating and in which breakage due to thermal stress is effectively prevented. A porous partition wall 3 having a large number of pores arranged so that a plurality of cells 4 (4a, 4b) serving as exhaust gas flow paths are formed between the two end faces, and cells 4a, 4b on the two end faces. The plugged portions 7 are arranged so as to alternately seal any one of the open end portions 5, and the fluid that has flowed into the cell 4 flows out through the partition wall 3 that functions as a filtration layer. It is possible to block the inflow of a part of exhaust gas to the unsealed opening end at the opening end (unsealed opening end) of the plurality of cells 4 where the plugging portions 7 are not arranged. The additional plugging portion 8 is further provided, and the axial arrangement length (L1) of the additional plugging portion 8 is the axial arrangement length (L2) of the plugging portion 7. It is configured differently. |