METHOD FOR REMOVING COMBUSTION RESIDUE OF PARTICULATE FILTER AND COMBUSTION RESIDUE REMOVING APPARATUS

摘要

PPROBLEM TO BE SOLVED: To provide a method for removing combustion residues of particulate filter and a combustion residue removing apparatus in which combustion residues in a filter can be easily removed, and performance deterioration of catalysts after removing combustion residues can be sufficiently suppressed even when catalysts are coated on the filter. PSOLUTION: In a status that a column 42 is inserted at an opening end portion of a plurality of upstream side hole portions 48 constituting the particulate filter 16 with a clearance formed between inner periphery of the opening end portion and the column 42, and a column attachment member 38 is mounted at an air upstream side end portion for purification of the particulate filter 16, the particulate filter 16 is arranged within an air communication pipe for purification. In this status, by causing air for purification to pass through the particulate filter 16, combustion residues 32 remaining inside downstream hole portion 50 adjoining the upstream hole portions 48 via cell walls 28 are removed, in the particulate filter 16. PCOPYRIGHT: (C)2009,JPO&INPIT