抄録
In order to reduce the concentration the diesel soot particles PM and NO_x in the diesel exhaust, exhaust gas is excited by passed though a corona discharge collector for diesel soot particles (CCDS) and a corona discharge reactor for NO_x (CRNR) in the high electric voltage field. In a CCDS, diesel soot particles is accumulated on the central electrode, after that, soot particles is removed by the incineration technique. In a CRNR, NO_x decreases as is oxidized to HNO_3. In this study, we coupled these corona reactors for removing the soot and NO_x, and we tried driving test on road using a diesel-engine truck equipped with the presented apparatus. We found that 1) the soot removal rate of 60% obtained at a corona input power of over 40W, 2) the NO_x removal rate of 97% obtained at a corona input power of over 100W, and 3) Soot removal rate was influenced by water contained in the exhaust gas.
