METHOD FOR OPERATING AN SCR CATALYST AND SCR-CATALYST SYSTEM

The invention relates to a method for operating an SCR catalyst system (14) for an internal combustion engine (10) with an SCR catalyst (16) which is suitable for storing a reduction means, and with the involvement thereof for reducing nitrogen oxides (NOx) in the exhaust gas. The reduction means or...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	HORN, ANDRE, GOTTSCHLING, MARTINA, BULLERT, JOERN, WENDENBURG, STEFAN, BROEMER, ARNE, HERR, ANDREAS
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TRANSPORTING WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to a method for operating an SCR catalyst system (14) for an internal combustion engine (10) with an SCR catalyst (16) which is suitable for storing a reduction means, and with the involvement thereof for reducing nitrogen oxides (NOx) in the exhaust gas. The reduction means or a chemical preliminary stage thereof is stored in a storage receptacle (22), and from there is fed via a metering and supply system (18) and, if appropriate, a preparation system, to the SCR catalyst (16). It is provided that at least a partial flow of air flowing into the storage receptacle (22), or air present in the storage receptacle (22), is conditioned in such a way that the relative and/or the specific air humidity of the air in the storage receptacle (22) is reduced. Due to the conditioning of the air, according to the invention, an adsorption of water by the reduction means, which is in particular urea, is prevented.