Influence of injection parameters on combustion, gaseous emissions and particle size distribution of a CRDI diesel engine operating with PODE/diesel blends
Influence of injection parameters on combustion, gaseous emissions and particle size distribution of a CRDI diesel engine operating with PODE/diesel blends
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喷射参数对使用 PODE/柴油混合物的 CRDI 柴油发动机的燃烧、气体排放和颗粒尺寸分布的影响
DOI：
10.1016/j.fuel.2020.118733
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发表时间：
2020-12
期刊：
影响因子：
7.4
通讯作者：
Chen Yang
中科院分区：
文献类型：
--
作者：
Tianting Wang;Junheng Liu;Ping Sun;Qian Ji;Wanying Gao;Chen Yang
在高压共轨直喷式柴油机上进行了PODE/柴油混合燃料在不同喷射压力（80 MPa、90 MPa和100 MPa）和喷射定时（0.5°CA ATDC、2.5°CA ATDC和4.5°CA ATDC）下的燃烧过程、气体排放特性和颗粒尺寸分布的试验研究。测试燃料为纯柴油、PODE体积分数为10%和20%的PODE/柴油混合燃料，分别标记为P0、P10和P20。结果表明，随着喷油压力的增大，最高燃烧压力和放热率峰值增大，而随着喷油提前角的推迟，燃烧压力略有下降。随着喷射压力的增加，混合燃料的CO、HC和碳烟排放明显降低，NOx排放增加，其中燃用P10燃料时NOx排放的增加幅度小于燃用P0和P20燃料时。尽管随着喷油正时的推迟，三种燃料的CO、HC和碳烟排放均有所增加，但NOx排放均有所降低，而P10燃料的气体排放受喷油正时的影响较小。随着注射压力的升高，共混物的粒子数浓度曲线峰值减小，其中聚集粒子比例减小，成核粒子比例增大。对于每种试验燃料，颗粒数浓度随喷油正时的延迟而增加，但P10颗粒的几何平均直径（GMD）受喷油正时的影响较小。随着喷射压力的增加和喷射正时的提前，每种试验燃料的峰值浓度所对应的颗粒直径减小。
This study deals with the experimental research on combustion process, gaseous emissions characteristics and particle size distributions of a high pressure common-rail direct injection (CRDI) diesel engine operating with PODE/diesel blends at different injection pressures (80 MPa, 90 MPa and 100 MPa) and injection timings (0.5°CA ATDC, 2.5°CA ATDC and 4.5°CA ATDC). The testing fuels were neat diesel, PODE/diesel blends with PODE volume fractions of 10% and 20%, which were marked as P0, P10 and P20 respectively. The results show that the maximum combustion pressure and peak value of heat release rate increase with the increment of injection pressure while the combustion pressure decreases slightly with the delay of injection timing. The CO, HC and soot emissions of the blended fuels decrease obviously with the increase of injection pressure, while the NOxincreases, in which the increasing extent of NOxby fueling P10 is smaller than those of P0 and P20 fuels. Even though CO, HC and soot of the three fuels increase with the delay of injection timing, the NOxemissions decrease and the gaseous emissions of P10 fuel are still less affected by injection timing. The peak values of particle number concentration curves of the blends decrease with higher injection pressure, among which the proportion of accumulation particles decreases and the proportion of nucleation particles increases. The particle number concentration increases with the delay of injection timing for each testing fuel, but the geometric mean diameter (GMD) of P10 particles is little affected by the injection timing. Also, the particle diameter corresponding to the peak concentration for each testing fuel decreases with the increase of injection pressure and the advance of injection timing.
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影响因子：
7.4
作者：
M. Parravicini;C. Barro;K. Boulouchos
通讯作者：
M. Parravicini;C. Barro;K. Boulouchos
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影响因子：
9
作者：
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通讯作者：
Yao Mingfa
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影响因子：
7.4
作者：
Zhu, Lei;Cheung, C. S.;Zhang, W. G.;Huang, Zhen
通讯作者：
Huang, Zhen
影响因子：
7.4
作者：
Bo Wang;Yanfei Li;Yizhou Jiang;Hongming Xu;Xinyue Zhang
通讯作者：
Bo Wang;Yanfei Li;Yizhou Jiang;Hongming Xu;Xinyue Zhang
汽油和 PODE 压燃式发动机 RCCI 燃烧和负荷扩展实验研究
影响因子：
7.4
作者：
Laihui Tong;Hu Wang;Zunqing Zheng;Rolf Reitz;Mingfa Yao
通讯作者：
Mingfa Yao