EXHAUST GAS PURIFYING APPARATUS

摘要

A particulate filter ( 22 ) for collecting particulates in the exhaust gas is comprised. The particulate filter ( 22 ) includes partitioning walls ( 54 ) for forming passages ( 50, 51 ). The partitioning walls ( 54 ) are made of a porous material. The end portions of adjacent partitioning walls ( 54 ) are brought close each other so as to narrow the respective passage formed by the partitioning walls ( 54 ), and the cross-sectional area of the flow path at the end region of the passage is made to be smaller than the cross-sectional area of the flow path in the remaining regions of the passage. The particulate filter ( 22 ) has an extended portion ( 55 ) which extends beyond the top ends of the partitioning walls ( 54 ) from the end surface of the particulate filter ( 22 ).