CERAMIC HONEYCOMB FILTER

摘要

PROBLEM TO BE SOLVED: To provide a ceramic honeycomb filter of a long collecting time by preventing increase of pressure loss due to deposition of particulates on a passage inlet part as a problem of the ceramic honeycomb filter.

SOLUTION: This ceramic honeycomb filter comprises partition walls with a porosity of 60% or more, and a partition wall-to-wall interval of 2.54 mm or less. An end face of the partition wall is roughly perpendicular to a passage direction. An outer end face of sealing material sealing a passage is protruded in the passage direction toward the end face of the partition wall by 0.01-5 mm. A protruded part has an inclined surface at least to the passage direction.

COPYRIGHT: (C)2003,JPO