Title:
FILTER AND EXHAUST-GAS PURIFICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2008/059726
Kind Code:
A1
Abstract:
A filter (10) for removing harmful substances contained in a discharge gas is
constituted so as to have, upstream in a discharge gas passage, a first region
where a harmful substance is removed by the effect of blocking inertial movement
and further have, downstream therein, a second region where a harmful substance
is removed by adsorption. A metallic catalyst (13) including a hydrocarbon adsorbent
is deposited in the first region, and a metallic catalyst (14) including a material
having the ability to occlude oxygen is deposited in the second region. Thus,
a system for filtration and discharge-gas purification is provided which combines
the collecting function of a filter with the oxidizing function of a catalyst
and has a high collection efficiency, low-temperature activity, and low pressure
loss.
Inventors:
OOSUMI KAZUO (JP)
Application Number:
PCT/JP2007/071495
Publication Date:
May 22, 2008
Filing Date:
November 05, 2007
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
OOSUMI KAZUO (JP)
OOSUMI KAZUO (JP)
International Classes:
F01N3/02; B01D53/94; B01J23/63; B01J29/068; F01N3/10; F01N3/24; F01N3/28
Domestic Patent References:
| WO1998048153A1 | 1998-10-29 |
Foreign References:
| JP2003220342A | 2003-08-05 | |||
| JP2006305550A | 2006-11-09 | |||
| JP2002276338A | 2002-09-25 | |||
| JP2004285871A | 2004-10-14 |
Attorney, Agent or Firm:
OGAWA, Shin-ichi et al. (Noguchi & Saika International Patent Office 37 Kowa Building, 4-5, Tsukiji 1-chom, Chuo-kuTokyo 45, JP)
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