Modellbasierte On-Board-Diagnoseverfahren für Drei-Wege-Katalysatoren

In dieser Arbeit werden zur Uberwachung von Drei-Wege-Katalysatoren zwei neue modellbasierte On-Board-Diagnoseverfahren vorgestellt. Zunachst wurde ein die Alterung mit berucksichtigendes physikalisches Katalysatormodell entwickelt. Dieses bildet die Grundlage der neuen Diagnoseverfahren, bei denen ein den aktuellen Zustand des Katalysators schatzender Sigma-Punkt-Kalman-Filter zum Einsatz kommt. Das grose Potential dieser neuen Diagnoseverfahren zeigen die abschliesend prasentierten Ergebnisse.

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