To provide an exhaust emission control apparatus of an internal combustion engine that improves the collection efficiency of particulates in exhaust discharged from the internal combustion engine and also prevents deposit of ash.
The exhaust emission control apparatus includes: a filter having a plurality of exhaust channels formed in an exhaust flow direction by a partition having a pore; an electrification device that electrifies the particulates in the exhaust and located upstream the filter; and an electric field formation device that forms an electric field between the filter and the electrification device and guides the electrified particulates to an outer peripheral side of the filter. The filter has a central side region and an outer peripheral side region which are arranged from the center of the filter toward a radial outside in order. The porosity of the partition formed of each exhaust channel in the outer peripheral side region of the filter is smaller than that in the central side region of the filter.
NAKAYAMA SHIGEKI
NISHIOKA HIROMASA
TSUKAMOTO YOSHIHISA
OTSUKI HIROSHI
MATSUO JUNICHI
伊藤 公一
島田 哲郎
森本 有一
青木 篤
鶴田 準一
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