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1. (WO2018054929) DIESEL PARTICLE FILTER

Pub. No.:    WO/2018/054929    International Application No.:    PCT/EP2017/073693
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Thu Sep 21 01:59:59 CEST 2017
IPC: B01D 53/94
B01J 35/00
B01J 23/58
B01J 23/63
B01J 29/72
B01J 35/04
F01N 3/20
F01N 3/035
Applicants: UMICORE AG & CO. KG
Inventors: PRICE, Kenneth Sherwood
PFEIFER, Marcus
OWENS, Christopher Simon
Title: DIESEL PARTICLE FILTER
Abstract:
A particle filter for treating exhaust gases includes an SCR catalyst that, when in the presence of a reductant such as ammonia, promotes selective catalytic reduction of NOx; an active oxidation catalyst that promotes oxidation of hydrocarbons and carbon monoxide; and an oxygen storage catalyst that alternately stores and releases oxygen, enhances soot oxidation and stores NOx at temperatures below optimal SCR functioning. The particle filter may be included in a system having an oxidation catalytic device (OCD) upstream of the particle filter, and optionally includes one or more SCR converters upstream and/or downstream of the particle filter, and/or an ammonia slip catalyst downstream of the particle filter. The system may further be adapted for operation under a high frequency injection fuel controlwith an OCD having substantial NOx storage material content, or an NSCfor improving the efficiency tradeoffs between soot oxidation during filter regeneration and NOx reduction.