An Experimental Investigation on the Removal of Emissions from Diesel Engine by Non-Thermal Technology

A nonthermal plasma reactor was designed and built based on the theory of pulsed corona discharge. Experiments were performed to measure the trapping efficiency of PM and the removal efficiency of NOx and HC on the 2135G diesel engine. Meantime, the influences on trapping efficiency of PM under a variety of engine operating conditions were tested and studied. Based on the endurance performance of this after-treatment system, a novel regeneration system was designed and tested. The experiment results show that, under the most partial load and speed conditions, the tapping efficiency of PM can reach 60%～90% and the removal efficiency of NOx T20% and HC 25%～30% respectively. The regeneration system provides an effective and practical way to remove the PM loaded on the electrode. 