| 基于DOC+CDPF技术的公交车燃用生物柴油气态物道路排放特性 |
| 摘要点击 2766 全文点击 713 投稿时间：2016-06-03 修订日期：2016-07-13 |
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| 中文关键词 柴油公交车 催化型连续再生颗粒捕集器 生物柴油 道路排放 气态排放物 |
| 英文关键词 diesel bus DOC+CDPF biodiesel on-road emission gaseous emissions |
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| 中文摘要 |
| 基于OBS-2200车载排放检测系统，试验研究并分析了催化型连续再生颗粒捕集器（DOC+CDPF）及生物柴油混合燃料B20（生物柴油体积占比20%）对国Ⅲ 柴油公交车瞬态工况和稳态工况下气态物道路排放特性的影响. 结果表明相较于B0（纯柴油），B20的一氧化碳（CO）、总碳氢化合物（THC）平均排放率偏低，其中，稳态工况下降幅分别为26.43%、10.44%，瞬态工况下降幅分别为22.78%、4.95%；二氧化碳（CO2）和氮氧化物（NOx）平均排放率偏高，其中，稳态工况下分别上升8.41%和8.26%，瞬态工况下分别上升7.15%、9.13%. 相较于B0，DOC+CDPF对B20的CO和THC净化效果更为显著，其中，稳态工况下降幅分别达60.58%和79.92%，瞬态工况下，降幅分别达63.67%和82.57%. DOC+CDPF使用后，CO2和NOx的排放率略微下降. |
| 英文摘要 |
| 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 CO2 and NOx emission rates. In steady-state condition, CO2 and NOx 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 CO2 and NOx was not obvious. |
