Effect of engine speed and load on NTP purifying diesel engine emissions

Bench test was carried out by NTP devices and reactor based on dielectric barrier discharge principles. Experimental result indicated that NTP could decompose emissions in diesel exhaust effectively. When the engine load kept constant, the effect of NTP would be weaken. When the engine speed kept constant, the removal efficiency of PM and NOx would rise first and then drop, the emissions of THC and CO would increase while NTP used only. When DPF fixed at the upstream of NTP reactor, the purifying rate of THC and CO would be better.