EP 1474220 A2 20041110 - DEVICE FOR USE IN TREATMENT OF EXHAUST GASES PARTICULARLY FROM ENGINES OPERATING WITH A WEAK MIXTURE

Title (en)

DEVICE FOR USE IN TREATMENT OF EXHAUST GASES PARTICULARLY FROM ENGINES OPERATING WITH A WEAK MIXTURE

Title (de)

VORRICHTUNG ZUR BEHANDLUNG VON ABGAS VON MAGERMOTOREN

Title (fr)

DISPOSITIF UTILISABLE DANS LE TRAITEMENT DES GAZ D'ECHAPPEMENT DE MOTEURS FONCTIONNANT EN MELANGE PAUVRE NOTAMMENT

Publication

EP 1474220 A2 20041110 (FR)

Application

EP 03722657 A 20030214

Priority

FR 0300493 W 20030214
FR 0201950 A 20020215

Abstract (en)

[origin: WO03068388A2] The invention relates to a device comprising a catalytic composition made from two and optionally three catalysts used in the treatment of exhaust gases particularly from engines operating with a weak mixture. The device comprises a composition made from a first catalyst with at least one precious metal on a support made from cerium oxide, titanium oxide or a mixture of zirconium oxide and titanium oxide, a second catalyst of the NOx-trapping type and optionally a third catalyst with at least an NOx-reducing function.

IPC 1-7

B01D 53/94; B01J 23/63; B01J 35/00; B01J 23/00; B01J 23/34

IPC 8 full level

B01D 53/94 (2006.01); B01J 23/00 (2006.01); B01J 23/34 (2006.01); B01J 23/63 (2006.01); B01J 35/00 (2006.01)

CPC (source: EP)

B01D 53/9422 (2013.01); B01D 53/945 (2013.01); B01J 23/002 (2013.01); B01J 23/34 (2013.01); B01J 23/63 (2013.01); B01J 35/19 (2024.01); B01D 2255/1021 (2013.01); B01D 2255/1025 (2013.01); B01D 2255/202 (2013.01); B01D 2255/2022 (2013.01); B01D 2255/204 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/2073 (2013.01); B01J 2523/00 (2013.01); Y02T 10/12 (2013.01)

Citation (search report)

See references of WO 03068388A2

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR

DOCDB simple family (publication)

WO 03068388 A2 20030821; WO 03068388 A3 20040422; AU 2003229826 A1 20030904; AU 2003229826 A8 20030904; EP 1474220 A2 20041110; FR 2836069 A1 20030822; FR 2836069 B1 20070223

DOCDB simple family (application)

FR 0300493 W 20030214; AU 2003229826 A 20030214; EP 03722657 A 20030214; FR 0201950 A 20020215