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1. (WO2013145266) PARTICULATE FILTER

Pub. No.:    WO/2013/145266    International Application No.:    PCT/JP2012/058620
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Sat Mar 31 01:59:59 CEST 2012
IPC: F01N 3/022
F01N 3/02
F01N 3/023
F01N 3/035
Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA
トヨタ自動車株式会社
NAKAYAMA, Shigeki
中山 茂樹
NISHIOKA, Hiromasa
西岡 寛真
IMAI, Daichi
今井 大地
OTSUKI, Hiroshi
大月 寛
Inventors: NAKAYAMA, Shigeki
中山 茂樹
NISHIOKA, Hiromasa
西岡 寛真
IMAI, Daichi
今井 大地
OTSUKI, Hiroshi
大月 寛
Title: PARTICULATE FILTER
Abstract:
The purpose of the present invention is to prevent the accumulation of ashes while preventing the deterioration in an PM trapping rate in a wall-flow-type particulate filter. For achieving the purpose, the present invention provides a wall-flow-type particulate filter which is partitioned by a porous dividing wall having such a pore size that ashes or aggregates of ashes can pass through the porous dividing wall, wherein a coat layer having a smaller pore size than that of the dividing wall is provided in a region lying between an upstream-side end part of the dividing wall and a position short of a downstream-side end part of the dividing wall.