Abstract
Keywords:Particulate Trap, Soot Trapping, Soot Re-burning, Electric Field, Soot Bridge
In order to improve the performance of electric diesel particulate trap (E-DPT) that has been proposed by the authors, behavior of trapping and re-burning of diesel soot was investigated using an electric diesel particulate trap with a pair of electro-plates (1-channel E-DPT). The E-DPT was capable to trap soot by applying DC electric field between electro-plates. Experimental results showed that soot was accumulated on the electro-plates and some of soot deposits were like whiskers. Soot trapped on the plates formed bridge structures in narrow space between electro-plates and was ignited with Joule heat of electrification. When a soot bridge was re-burned, soot deposits on the plates near the bridge were also re-burned. After the re-burning, a new soot bridge was re-formed and above behaviors were automatically repeated.