Abstract：By nonthermal plasma (NTP) injection system, the regeneration of diesel particulate filter (DPF) was experimented with air as gas source. The effect of air flow rate on DPF regeneration was investigated by observing the flow rates of main active substances of O3 and NO2 and regeneration product of COx during regeneration process. The results show that the active substances of O3 and NO2 are generated through the discharge reaction of NTP reactor and play important role in the decomposition of PM. With the increasing of air flow rate, the mass flow rate of O3 and the volume flow rate of NO2 are increased remarkably, which promotes the decomposition of PM. With the increasing of air flow rate, the mass of C in COx is increased, while the mass of decomposed PM per liter is decreased. When the air flow rate is 185 L·min-1, the mass of C in COx achieves the maximum value, and the DPF regeneration effect is the most significant. When the air flow rate is 50 L·min-1, the mass of decomposed PM per liter shows the maximum value, and air has the highest utilization rate.
2017, Vol. 38 
