Title:
EXHAUST PURIFICATION FILTER
Document Type and Number:
WIPO Patent Application WO/2017/051459
Kind Code:
A1
Abstract:
Provided is a GPF capable of exhibiting better than conventional three-way purification function. A gasoline particulate filter (GPF) 32 that is provided in an exhaust pipe 3 of an engine 1 and that performs purification by capturing particulate matter (PM) in exhaust gas is provided with: a filter substrate 320 in which a plurality of cells 321, 322 extending from an exhaust gas inflow-side end face 32a to an outflow-side end face 32b are defined by porous partition walls 323 and in which openings at the inflow-side end face 32a and openings at the outflow-side end face 32b of the cells 321, 322 are alternately sealed; and a three-way catalyst (TWC) 33 supported by the partition wall 323. The three-way catalyst 33 is the GPF 32 comprising a catalytic metal containing at least Rh, and a composite oxide having an oxygen storage capacity and containing Nd and Pr in a crystal structure.
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Inventors:
OTSUKA SHINICHIRO (JP)
MASUMITSU NORITAKA (JP)
YAMADA RYOKO (JP)
MASUMITSU NORITAKA (JP)
YAMADA RYOKO (JP)
Application Number:
PCT/JP2015/076948
Publication Date:
March 30, 2017
Filing Date:
September 24, 2015
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
F01N3/022; B01D53/94
Foreign References:
| JP2014136174A | 2014-07-28 | |||
| JP2015157257A | 2015-09-03 | |||
| JP2015521245A | 2015-07-27 |
Attorney, Agent or Firm:
SHOBAYASHI, Masayuki et al. (JP)
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