Modeling and Control of a NOxTrap Catalyst

An adaptive model based monitoring strategy for a NOx trap catalyst is presented. First, a simplified model of the NOx trap is developed from a physical PDE (Partial Differential Equations) model. A validation on different types of data is given. Then two monitoring strategies are presented: a non-a...

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Bibliographic Details
Published in:SAE transactions 2000-01, Vol.109, p.798-807
Main Authors: Ketfi-Cherif, Ahmed, von Wissel, Dirk, Beurthey, Stephan, Sorine, Michel, Sorinem, Michel
Format: Article
Language:English
Online Access:Get full text
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Summary:An adaptive model based monitoring strategy for a NOx trap catalyst is presented. First, a simplified model of the NOx trap is developed from a physical PDE (Partial Differential Equations) model. A validation on different types of data is given. Then two monitoring strategies are presented: a non-adaptive and an adaptive strategy, which uses a downstream EGO (Exhaust Gas Oxygen) sensor. The basic idea of the adaptive strategy is to put the catalyst and monitoring strategy in a particular condition such that a successive adaptation of three different parameters of the model is possible. The adaptive strategy is compared to the non-adaptive strategy by use of numerical simulations.
ISSN:0096-736X
2577-1531