Untersuchung der Rußoxidation unter dieselmotorischen Randbedingungen
Soot emission of diesel engines is the result of soot formation and of soot oxidation. Experimental investigations showed that most of the soot is oxidized during combustion. Therefore soot oxidation has major influence on the tail pipe emission. In this thesis a simulation model has been developed which uses detailed gas phase reaction kinetics and a heterogeneous surface reaction model. The predicted con-centrations agree very well with the experimental results. Simulation of the surface reaction is done with a semi-global multi-disperse particle model which takes account for the transport processes between gas and particle phase. The effects of gas phase radicals are described with less simplification errors and give insight in the oxidation process. Soot oxidation under diesel engine like conditions could be described in comparison of analytical and experimental (fast sampling valve) time dependent behavior. Even the soot induction time could be considered in contrast to published models.
info:eu-repo/classification/ddc/620, Ingenieurwissenschaften, Dieselmotor, Verbrennung, Ruß, Oxidation, Simulation
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