Title:
EXHAUST PURIFICATION CATALYST FOR STOICHIOMETRICALLY OPERATED GASOLINE ENGINE
Document Type and Number:
WIPO Patent Application WO/2017/082563
Kind Code:
A1
Abstract:
The present invention relates to a layered catalyst composite (TWC-NT), in which a catalyst of a type commonly referred to as a three-way catalyst (TWC) and a nitrogen oxide adsorption component (NT) are integrated. In particular, the present invention relates to the layered catalyst composite integrating the three-way catalyst (TWC) and a nitrogen oxide trap (NT) for processing nitrogen oxide produced in a large amount under a lean condition which is momentarily created due to a fuel cut in a gasoline engine in which an air-fuel mixture reacts according to a stoichiometric air-ingredient ratio, in other words, under a condition having an oxygen concentration of at least a stoichiometric amount in exhaust gas.
Inventors:
HAN HYUN-SIK (KR)
NA SEUNG CHUL (KR)
SONG JIN-WOO (KR)
LEE KWI-YEON (KR)
LEE JUN (KR)
NA SEUNG CHUL (KR)
SONG JIN-WOO (KR)
LEE KWI-YEON (KR)
LEE JUN (KR)
Application Number:
PCT/KR2016/012351
Publication Date:
May 18, 2017
Filing Date:
October 31, 2016
Export Citation:
Assignee:
HEESUNG CATALYSTS CORP (KR)
International Classes:
F01N3/08; B01J23/40; F01N3/10; F01N3/20
Domestic Patent References:
| WO2015135983A1 | 2015-09-17 |
Foreign References:
| KR20050013996A | 2005-02-05 | |||
| KR101459439B1 | 2014-11-07 | |||
| KR101337934B1 | 2013-12-09 | |||
| JPH11247654A | 1999-09-14 |
Attorney, Agent or Firm:
HAN, In Youl (KR)
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