EP 0822856 A1 19980211 - PROCESS FOR REGENERATING AN NOx STORAGE CATALYTIC CONVERTER
Title (en)
PROCESS FOR REGENERATING AN NOx STORAGE CATALYTIC CONVERTER
Title (de)
VERFAHREN ZUR REGENERATION EINES NOx-SPEICHERKATALYSATORS
Title (fr)
PROCEDE DE REGENERATION D'UN CATALYSEUR D'ACCUMULATION DE NOx
Publication
Application
Priority
- DE 9700278 W 19970213
- DE 19607151 A 19960226
Abstract (en)
[origin: DE19607151C1] Nitrogen oxides storage catalyst (4) is regenerated in accordance with the operational state of the catalyst (4). During regeneration, the mixture supplied to the internal combustion engine corresponds to a stoichiometry ratio less than one (rich), ahead of the catalyst. The operational state corresponds to at least a limiting quantity of NOx compounds issuing from the catalyst. The quantity of NOx is evaluated from a characteristic diagram, which is a function of the loading and rotary speed of the engine.
IPC 1-7
IPC 8 full level
B01D 53/94 (2006.01); F02D 41/02 (2006.01); F01N 3/08 (2006.01)
CPC (source: EP)
B01D 53/9409 (2013.01); B01D 53/9495 (2013.01); F01N 3/0842 (2013.01); F02D 41/0275 (2013.01); F02D 41/1462 (2013.01); F02D 41/1465 (2013.01); F01N 2250/12 (2013.01); F02D 2200/0806 (2013.01); F02D 2200/0811 (2013.01)
Citation (search report)
See references of WO 9731704A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 19607151 C1 19970710; EP 0822856 A1 19980211; WO 9731704 A1 19970904
DOCDB simple family (application)
DE 19607151 A 19960226; DE 9700278 W 19970213; EP 97914147 A 19970213