PARTICULATE FILTER WITH CATALYST, EXHAUST GAS PURIFICATION AND DISCHARGE SYSTEM, CATALYST ARRANGEMENT PART RATIO CALCULATION METHOD, AND CATALYST ARRANGEMENT PART RATIO CALCULATION DEVICE

摘要

PROBLEM TO BE SOLVED: To efficiently suppress a change of regeneration performance irrespective of the accumulation of an internal combustion residue, in a particulate filter with a catalyst.

SOLUTION: The particulate filter 16 with the catalyst has a PM oxide catalyst which is held by a filter body 27 and oxidizes and removes a particulate having carbon as a main component. The particulate filter 16 has a catalyst coating part 30 which is arranged at an exhaust inlet side, and in which the oxide catalyst is arranged, and a catalyst non-coating part 32 which is arranged at an exhaust outlet side, and in which the oxide catalyst is not arranged. The particulate filter is regulated so that a partial coating ratio X being a ratio of the length of the catalyst coating part 30 with respect to the whole length and a regeneration ratio E generated by the removal of the particulate may satisfy a prescribed relationship.

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