| 摘要 |
A honeycomb filter 1 includes: partition walls separating and forming a plurality of cells extending in a direction of a central axis 21 , and a catalyst loaded on the partition wall. A region (central unloaded portion) 4 from one end portion (outlet side end portion) 12 in the direction of the central axis to at least ½ of length in the direction of the central axis in a central portion 2 including the central axis 21 and excluding an outer periphery 22 is a catalyst-unloaded region, a region (outer peripheral unloaded portion) 5 from the outlet side end portion 12 to 2/3 or less of length in the direction of the central axis in the central unloaded portion 4 is a catalyst-unloaded region, and a portion excluding the central unloaded portion 4 and the outer peripheral unloaded portion 5 from the whole is a catalyst-loaded portion. The honeycomb filter can inhibit catalyst deterioration, occurrence of crack, and melting and raise regeneration efficiency.
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