Abstract
In order to enhance behaviors of the diesel particulate filter (DPF) in equilibrium state, a mathematic model of pressure drop in the DPF in equilibrium state is developed to investigate effects of key parameters on its behavior in equilibrium state. Therefore, the impacts of factors on soot mass in the DPF in equilibrium state, pressure drop in the DPF in equilibrium state and oxidation rate are evaluated by the improved fuzzy grey relational analysis method. And some useful results such as fuzzy grey correlation coefficient of different effect factors in equilibrium state of the diesel particulate filter in the process of continuous regeneration and change laws of soot mass and pressure drop in the DPF in equilibrium state based on different geometric parameters are obtained. Smaller diameter of the DPF will result in larger pressure drop in the DPF and more complications for the length of the filter in equilibrium state. The optimum length of the filter may not necessarily be the smallest possible, sometimes depending on diameter of the filter in equilibrium state. Larger wall thickness and smaller channel diameter cause more soot mass in the DPF in equilibrium state. This work will provide relative reference values when the diesel particulate filter is chosen or designed to match the CRT system.
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