P-We-119 Automotive Three Way Catalysts: From Mechanistic Understanding to improved Lambda Control

Wednesday, June 8, 2011
Ontario Exhibit Hall (Detroit Marriott Hotel at the Renaissance Center )
Martin Votsmeier1, Roman Möller2, J. Gieshoff1, Alexander F. Scheuer3, C. Onder2 and L. Guzzella2, (1)R&D, Umicore AG & Co. KG, Hanau, Germany, (2)Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Zürich, Switzerland, (3)Ernst-Berl Institut für Technische und Makromolekulare Chemie, Technical University of Darmstadt, Darmstadt, Germany
In this work we show that the thermodynamics of oxygen storage on ceria are essential for an understanding the control behavior of a three way catalyst. A new kinetic model is presented and the model is used for the development of improved lambda control functions.

Extended Abstracts: