método e dispositivo para controlar um conversor catalítico de scr em um veículo

The present invention provides for a method and apparatus for controlling an SCR catalytic converter. The invention describes a model-based control method including a physical model of the SCR catalyst (2) with more than one NH3 storage cell and a physical model of a NOx sensor (4). The observer fee...

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Bibliographische Detailangaben
1. Verfasser:	THEOPHIL AUCKENTHALER
Format:	Patent
Sprache:	por
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 STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	The present invention provides for a method and apparatus for controlling an SCR catalytic converter. The invention describes a model-based control method including a physical model of the SCR catalyst (2) with more than one NH3 storage cell and a physical model of a NOx sensor (4). The observer feedback gain forces the estimated sensor outputs from the model to converge to measured ones, therefore, there is not ambiguity in the determination of the operating point.