| 摘要 |
A ceramic honeycomb filter comprising a honeycomb structure having a large number of flow paths partitioned by porous cell walls; and plugs formed in the flow paths alternately on the exhaust gas inlet and outlet sides; the thickness W (mm) and permeability kappa (mum2) of the cell wall and the length L (mm) and cross section area A (mm2) perpendicular to the length direction of the flow path meeting the relations of 0.1<=W<=0.5, 8<=kappa/W<=26.7, and 125<=L/A0.5<=360.
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