| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device improving fuel consumption efficiency of a diesel engine by increasing PM collection quantity of a honeycomb filter, making interval of fuel addition longer and preventing pressure loss rise due to accumulation of PM on an exhaust gas flow in side end surface of the honeycomb filter. <P>SOLUTION: A honeycomb structure body carrying oxidation catalyst and the ceramic honeycomb filter having catalyst material carried on partition wall of the ceramic honeycomb filter having a desired flow passage of the ceramic honeycomb structure body sealed and/or at least part of the sealed part and having at least one of exhaust gas flow in side sealing part arranged separately from the exhaust gas flow in side end surface, are arranged in this order in an exhaust gas circulation direction, thickness and porosity of the partition wall of the honeycomb structure body carrying the oxidation catalyst is made smaller than those of the ceramic honeycomb filter. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
