EP 1307639 B1 20060315 - METHOD AND CONTROLLER FOR OPERATING A NITROGEN OXIDE (NOX) STORAGE CATALYST
Title (en)
METHOD AND CONTROLLER FOR OPERATING A NITROGEN OXIDE (NOX) STORAGE CATALYST
Title (de)
VERFAHREN UND STEUERGERÄT ZUM BETREIBEN EINES STICKOXID (NOx)-SPEICHERKATALYSATORS
Title (fr)
PROCEDE ET ORGANE DE COMMANDE DE FONCTIONNEMENT D'UN CATALYSEUR ACCUMULATEUR D'OXYDES D'AZOTE (NOX)
Publication
Application
Priority
- DE 0102594 W 20010711
- DE 10036453 A 20000726
Abstract (en)
[origin: WO0208582A1] The invention relates to a method for operating a nitrogen oxide (NOx) storage catalyst (12') on an internal combustion engine (1), in particular in a motor vehicle (1). The nitrogen oxides (NOx) generated by the internal combustion engine (1) are stored in the storage catalyst (12') during a first operating phase and the nitrogen oxides stored in the storage catalyst (12') are released during a second operating phase. The beginning of the second operating phase is determined by means of a nitrogen oxide (NOx) level (mnosp) of the NOx storage catalyst (12'), which is modelled by means of a nitrogen oxide (NOx) storing model (30). According to the invention, in order to be able to determine the beginning and the end of the second operating phase as exactly and reliably as possible, a first value for nitrogen oxide (NOx) mass flow (msnonk s) behind the NOx storage catalyst (12') is determined and the NOx storing model (30) is corrected based on the determined first value (msnonk s).
IPC 8 full level
F01N 3/08 (2006.01); F02D 41/02 (2006.01); F02D 41/04 (2006.01); F02D 41/14 (2006.01); F02D 45/00 (2006.01); F02D 41/30 (2006.01)
CPC (source: EP US)
F01N 3/0842 (2013.01 - EP US); F01N 3/0864 (2013.01 - EP US); F01N 3/0871 (2013.01 - EP US); F02D 41/0275 (2013.01 - EP US); F02D 41/146 (2013.01 - EP US); F02D 41/1463 (2013.01 - EP US); F02D 41/1465 (2013.01 - EP US); F02D 41/1402 (2013.01 - EP US); F02D 41/3029 (2013.01 - EP US); F02D 2200/0806 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
WO 0208582 A1 20020131; DE 10036453 A1 20020214; DE 50109223 D1 20060511; EP 1307639 A1 20030507; EP 1307639 B1 20060315; JP 2004504539 A 20040212; JP 5220258 B2 20130626; US 2003163987 A1 20030904; US 6889497 B2 20050510
DOCDB simple family (application)
DE 0102594 W 20010711; DE 10036453 A 20000726; DE 50109223 T 20010711; EP 01956310 A 20010711; JP 2002514045 A 20010711; US 33395403 A 20030127