CAJ | 학술논문

采用高硫含量和国Ⅲ、国Ⅳ、国Ⅴ标准硫含量的基准柴油，在发动机台架上进行国IV DOC+POC柴油机的ESC和ETC测试，并利用FTIR气体分析仪对SO2和NO2排放进行测量。对比研究了有、无DOC+POC下柴油机的SO2和NO2排放特性。结果表明，DOC+POC后处理可有效减小SO2的排放，稳态循环下高硫柴油SO2平均降低56%，国Ⅲ、国Ⅳ和国Ⅴ柴油分别降低29.89%、30.32%和27.81%；瞬态循环下SO2排放无明显趋势；与原机相比，稳态ESC和瞬态ETC的NO2排放均增加。
채용고류함량화국Ⅲ、국Ⅳ、국Ⅴ표준류함량적기준시유，재발동궤태가상진행국IV DOC+POC시유궤적ESC화ETC측시，병이용FTIR기체분석의대SO2화NO2배방진행측량。대비연구료유、무DOC+POC하시유궤적SO2화NO2배방특성。결과표명，DOC+POC후처리가유효감소SO2적배방，은태순배하고류시유SO2평균강저56%，국Ⅲ、국Ⅳ화국Ⅴ시유분별강저29.89%、30.32%화27.81%；순태순배하SO2배방무명현추세；여원궤상비，은태ESC화순태ETC적NO2배방균증가。
With standard diesel containing high sulfur, standard diesels with China III-, China IV- and China V standard sulfur content, ESC and ETC tests are carried out for a China IV diesel engine equipped with DOC and POC, the SO2 and NO2 emitted from the engines with and without after-treatments DOC +POC are measured with FTIR gas analyzer, their emission characteristics are compared and analyzed. The results show that DOC+POC system can reduce the emission of SO2 effectively by 56% on average for high sulfur diesel in steady state, whereas China III-, China IV- and China V diesels are reduced by 29.89%, 30.32% and 27.81% respectively; while the SO2 emission in transient cycle shows no noticeable trend. Compared with the original engine, NO2 emission increases both in steady state ESC and transient state ETC.