EP 1694952 B1 20080109 - SYSTEM FOR DESULFATING AN NOX-TRAP
Title (en)
SYSTEM FOR DESULFATING AN NOX-TRAP
Title (de)
SYSTEM ZUR DESULFATISIERUNG EINER NOX-FALLE
Title (fr)
SYSTEME DE DESULFATATION D'UN PIEGE A NOX
Publication
Application
Priority
- FR 2004002523 W 20041006
- FR 0313825 A 20031125
Abstract (en)
[origin: US2007113545A1] This system in which the NOx trap ( 1 ) is associated with catalyst-forming means ( 2 ) integrated in an exhaust line ( 3 ) of a vehicle engine ( 4 ), and in which the engine is associated with common manifold or "rail" fuel feeder means ( 7, 8 ) for feeding it with fuel and adapted, by modifying control parameters for the operation of the engine, to cause the engine to switch between lean mixture operation ( 9 ) and rich mixture ( 10 ), is characterized in that the fuel feeder means ( 7, 8 ) are adapted to define four strategies ( 11, 12, 13, 14 ) for controlling lean mixture operation of the engine ( 9 ), and in that the fuel feeder means ( 7, 8 ) are adapted to cause the engine to switch between its various strategies in order to keep the trap ( 1 ) in a temperature window of maximum effectiveness.
IPC 8 full level
F02D 41/02 (2006.01); F02D 41/38 (2006.01)
CPC (source: EP US)
F02D 41/028 (2013.01 - EP US); F02D 41/1446 (2013.01 - EP US); F02D 41/3809 (2013.01 - EP US); F02D 2041/389 (2013.01 - EP US)
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 PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2007113545 A1 20070524; US 7343737 B2 20080318; AT E383507 T1 20080115; DE 602004011261 D1 20080221; DE 602004011261 T2 20081224; EP 1694952 A1 20060830; EP 1694952 B1 20080109; FR 2862702 A1 20050527; FR 2862702 B1 20060224; JP 2007512465 A 20070517; JP 4546484 B2 20100915; WO 2005064140 A1 20050714
DOCDB simple family (application)
US 59582204 A 20041006; AT 04791477 T 20041006; DE 602004011261 T 20041006; EP 04791477 A 20041006; FR 0313825 A 20031125; FR 2004002523 W 20041006; JP 2006540500 A 20041006