Numerical simulations are increasingly assisting research and development in the field of emission control of automotive vehicles. Our work focuses on the prediction of the tail-pipe emissions, based on a numerical simulation of the automotive catalytic converter. Besides the prediction of the tail-pipe emissions, an understanding of the processes occurring inside a monolithic catalytic converter implies new opportunities for the design of the optimum exhaust gas system. In this paper, we present a three-dimensional transient numerical study of the influence of the velocity distribution in front of the inlet face on the thermal behaviour of the monolith during the light-off of a 3-way catalytic converter. The differences in the thermal and chemical behaviour due to the shape of the velocity distribution are discussed. The recently developed code DETCHEM(Monolith)/1/ is used for the numerical simulation. This code, for the first time, combines two-dimensional simulations of the reactive flow inside a large number of single monolith channels including a heterogeneous multi-step reaction mechanism with a transient simulation of the three-dimensional temperature field of the entire converter.
Impact of the inlet flow distribution on the light-off behavior of a 3-way catalytic converter
2003
11 Seiten, 22 Bilder, 2 Tabellen, 18 Quellen
Conference paper
English
Impact of the inlet flow distribution on the light-off behavior of a 3-way catalytic converter
Automotive engineering | 2003
|Impact of the Inlet Flow Distribution on the Light-Off Behavior of a 3-Way Catalytic Converter
SAE Technical Papers | 2003
|British Library Conference Proceedings | 2003
|Modelling of flow distribution during catalytic converter light-off
Automotive engineering | 2004
|Modelling of flow distribution during catalytic converter light-off
Online Contents | 2004
|