Experimental Study on Catalytic Performance of A Selective Catalytic Converter
Engine post-processing test on AVL test bench,the ammonia storage characteristics and NOx con-version efficiency of Selective Catalystic Reduction(SCR)at different upstream temperature,Space Velocity(SV)and ammonia-nitrogen ratio were studied.The results showed that the ammonia storage capacity decreased with the increase of SCR upstream temperature and airspeed,and the ammonia storage capacity was the highest at 175℃and 20000h-1 airspeed,which was 2981.68 mg/L,the SCR has the highest conversion efficiency(99%)at 300℃and 20000h-1 airspeed.