Ceramic filter for exhaust gas purification

摘要

A ceramic filter assembly integrated by adhering together a plurality of columnar honeycomb filters made of a porous ceramic sintered material with a ceramic sealing material layer and having a generally elliptical cross sectional shape when cut parallel to end faces of the plurality of honeycomb filters, the ceramic filter assembly characterized in that each honeycomb filter includes a plurality of rectangular cells extending along an axis of the filter and defined by relatively thick cell walls (D1) and relatively thin walls (D2) that are orthogonal to each other, the plurality of honeycomb filters being arranged so that the relatively thick cell walls are parallel to the major axis of the assembly and the relatively thin cell walls are parallel to the minor axis of the assembly.