Modelling wall-flow diesel particulate filter regeneration processes
2018-08-10T11:10:05Z (GMT)
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This research was aimed at providing a better understanding of regeneration processes in
wall-flow diesel particulate filters (DPFs), with emphasis on the combustion of particulate
matter (PM). A 1-D model was used to investigate the effects of inherent PM properties on
DPF regeneration behaviour. These properties were mean particulate diameter, porosity and
bulk density of the PM, as well as the kinetic parameters of PM oxidation, i.e. frequency
factor and activation energy. A parametric study showed that the activation energy of the
PM oxidation reaction was the most important parameter and this was followed by the
associated frequency factor, bulk density and porosity and mean particulate diameter. Due to
the importance of the kinetic parameters of the PM oxidation reactions, a new 1-D model
with a multi-step reaction scheme that required no tuneable kinetic parameters for the PM
oxidation reactions was developed. [Continues.]