Experimental studies and mathematical simulations on the thermo-chemical mechanisms of DPF auto-regeneration

Aim of project
The scientific aim of the project is to examine the influence of a chosen thermo-chemical mechanism, which favors or leads to auto-regeneration of Diesel Particulate Filter (DPF) in an exhaust stream of the Diesel engine. This project has the following particular aims:
An extension of DPF regenerating model due to implementing more advanced sub-models of thermo-chemical PM oxidation mechanisms;

Building a scientific stand for examining parameters that characterize kinetics of burning (speed of burning and activation energy) of technical soot and engine soot depending on the chemical composition of the oxidant and the type and quantity of the catalytic substance;

To carry out model-based investigations of influence of the most important thermo-chemical mechanism of thermal oxidation and catalytic–thermal oxidation of PM in the presence of a modified oxidant for thermal time regenerating functions of DPF;

Usage of results of experimental investigations in regenerating model simulations that help to know different regenerating variants; to choose the best procedures and technological parameters for the auto-regenerating process; Experimental investigations of auto-regenerating technologies of the DPF model, which co-operates with the catalytic converter model in the exhaust stream of low power Diesel engine.

Expected results
As a result of the conducted experimental and theoretical investigations, the prime thermo-chemical mechanisms which accompany oxidation and soot burning initiation, will be better known and verified, which will lead to elaboration of different auto-regenerating strategies. Additionally, the values that characterize PM oxidation will be estimated as a function of chosen physical and chemical parameters. Thanks to implementing new oxidation sub-models of PM the simulation model will be improved. Moreover, the scientific stand for examination of thermo- chemical phenomena in catalytic and filtration compounds in terms of fi lter auto-regeneration will be built.