INSTALLATION ET PROCEDE POUR L'EPURATION DES GAZ D'ECHAPPEMENT AVEC UN CATALYSEUR D'EMMAGASINAGE DES OXYDES D'AZOTE ET UN CATALYSEUR A RCS

An exhaust-gas cleaning apparatus for cleaning the exhaust gas from an internal combustion engine which is operated predominantly in lean-burn mode, in particular in a motor vehicle, having an exhaust pipe, in which a three-way catalytic converter 2, a nitrogen oxide storage catalytic converter 3 an...

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Bibliographische Detailangaben
Hauptverfasser:	GUENTHER JOSEF, WEIRICH MARKO, VOIGTLAENDER DIRK
Format:	Patent
Sprache:	fre
Schlagworte:	BLASTING COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES 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 HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	An exhaust-gas cleaning apparatus for cleaning the exhaust gas from an internal combustion engine which is operated predominantly in lean-burn mode, in particular in a motor vehicle, having an exhaust pipe, in which a three-way catalytic converter 2, a nitrogen oxide storage catalytic converter 3 and an SCR catalytic converter 4 are arranged in series in the direction of flow, has a bypass line 5, which can be used to feed exhaust gas which flows out of the three-way catalytic converter 2 to the SCR catalytic converter 4, bypassing the nitrogen oxide storage catalytic converter 3. It is provided that an exhaust-gas part-stream of the exhaust gas which flows out of the three-way catalytic converter is fed via a bypass line to the SCR catalytic converter, bypassing the nitrogen oxide storage catalytic converter, the exhaust-gas part-stream being adjusted as a function of a temperature of the exhaust-gas cleaning apparatus.