Lou Di-Ming, Zhang Yun-Hua, Tan Pi-Qiang, Hu Zhi-Yuan
School of Automotive Studies, Tongji University, Shanghai 201804, China.
Huan Jing Ke Xue. 2016 Dec 8;37(12):4545-4551. doi: 10.13227/j.hjkx.201606014.
The gaseous emissions of stage Ⅲ standard City bus with and without DOC+CDPF after-treatment fueled with biodiesel blends on real road in steady-state and transient conditions were studied using OBS-2200 gaseous portable emission measurement. The results showed that B20 led to a decrease of CO and THC emission rates compared with those of B0. In steady-state condition, CO and THC average mass emission rates of B20 decreased by 26.43% and 10.44% respectively and in transient condition the decrease rates were 22.78% and 4.95%. Meanwhile, B20 eventuated in higher CO and NO emission rates. In steady-state condition, CO and NO average mass emission rates of B20 increased by 8.41% and 8.26% respectively and in transient condition the increase rates were 7.15% and 9.13%. DOC+CDPF caused a more obvious reduction of CO and THC emission rates of B20 compared with B0. In steady-state condition, CO and THC average emission rates decreased by 60.58% and 79.92%, while in transient condition they decreased by 63.67% and 82.57%. The influence of DOC+CDPF on emission reduction of CO and NO was not obvious.
采用OBS-2200气体便携式排放测量设备，研究了在实际道路稳态和瞬态工况下，配备和未配备DOC+CDPF后处理装置的Ⅲ阶段标准城市公交车使用生物柴油混合燃料时的气体排放情况。结果表明，与B0相比，B20使CO和THC排放率降低。在稳态工况下，B20的CO和THC平均质量排放率分别降低了26.43%和10.44%，在瞬态工况下，降低率分别为22.78%和4.95%。同时，B20导致CO和NO排放率升高。在稳态工况下，B20的CO和NO平均质量排放率分别升高了8.41%和8.26%，在瞬态工况下，升高率分别为7.15%和9.13%。与B0相比，DOC+CDPF使B20的CO和THC排放率降低更为明显。在稳态工况下，CO和THC平均排放率分别降低了60.58%和79.92%，而在瞬态工况下，它们分别降低了63.67%和82.57%。DOC+CDPF对CO和NO减排的影响不明显。
