EP 1450937 A1 20040901 - METHOD AND SYSTEM FOR REGENERATING, PARTICULARLY DESULFATING, A STORAGE-TYPE CATALYTIC CONVERTER DURING THE PURIFICATION OF EXHAUST GASES
Title (en)
METHOD AND SYSTEM FOR REGENERATING, PARTICULARLY DESULFATING, A STORAGE-TYPE CATALYTIC CONVERTER DURING THE PURIFICATION OF EXHAUST GASES
Title (de)
VERFAHREN UND ANLAGE ZUR REGENERIERUNG INSBESONDERE DESULFATISIERUNG EINES SPEICHERKATALYSATORS BEI DER ABGASREINIGUNG
Title (fr)
PROCEDE ET SYSTEME POUR REGENERER, NOTAMMENT A DESULFATER UN POT CATALYTIQUE LORS DE LA PURIFICATION DES GAZ D'ECHAPPEMENT
Publication
Application
Priority
- DE 0203952 W 20021019
- DE 10158568 A 20011129
Abstract (en)
[origin: WO03047732A1] The invention relates to a method and system for regenerating, particularly for desulfating, storage-type catalytic converters (1) during the purification of exhaust gases produced by internal combustion engines (12). To this end, the invention provides that during the regeneration phase, a control device (11) is used to control the combustion firstly inside the engine in order to lower the air ratio lambda in the exhaust gas to a first value lambda 1. Afterwards, a supply device (5, 6) for supplying the reducing agent is subsequently controlled by the control device (11) in order to set the air ratio lambda at a second lower value lambda 2 < 1. The invention ensures that the temperatures occurring on the entry side (3) of the storage-type catalytic converter (1) are sufficient for carrying out an efficient desulfation without damaging the storage-type catalytic converter (1).
IPC 1-7
IPC 8 full level
F02D 9/02 (2006.01); B01D 53/86 (2006.01); B01D 53/94 (2006.01); F01N 3/08 (2006.01); F01N 3/20 (2006.01); F01N 3/24 (2006.01); F01N 3/28 (2006.01); F02D 21/08 (2006.01); F02D 41/02 (2006.01); F02D 41/04 (2006.01); F02D 43/00 (2006.01); F02D 45/00 (2006.01)
CPC (source: EP KR US)
B01D 53/94 (2013.01 - KR); B01D 53/9431 (2013.01 - EP US); B01D 53/9495 (2013.01 - EP US); F01N 3/0842 (2013.01 - EP US); F01N 3/0885 (2013.01 - EP US); F02D 41/028 (2013.01 - EP US); F01N 2570/04 (2013.01 - EP US); F01N 2610/03 (2013.01 - EP US)
Citation (search report)
See references of WO 03047732A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03047732 A1 20030612; DE 10158568 A1 20030626; EP 1450937 A1 20040901; JP 2005511942 A 20050428; KR 20040063078 A 20040712; US 2004148927 A1 20040805; US 7181907 B2 20070227
DOCDB simple family (application)
DE 0203952 W 20021019; DE 10158568 A 20011129; EP 02782730 A 20021019; JP 2003548979 A 20021019; KR 20037009938 A 20030728; US 47052304 A 20040330