부산대학교 도서관

So far, a diesel particulate filter (DPF) has been widely used to trap diesel soot. However, the filter would be plugged with deposited soot, resulting in an increase of filter backpressure. If the backpressure is large, the engine may stall or the fuel consumption would increase. The filter is needed to be cleaned by oxidizing the deposited soot, which is called a filter regeneration process. To reduce the soot oxidation temperature, the filter is normally coated with catalyst. For the catalyst coating, the valuable substances such as platinum are usually used. It is desirable to reduce the amount of catalysts. For that purpose, we need to know the influence of the catalyst on the soot deposition process. In this study, we have simulated the filter regeneration process and evaluated the effect of catalyst. Here, using Pt and AgPd as catalysts, the temperature field and the period of filter regeneration have been compared and discussed.