Experimental and Modeling Investigations on Soot Formation of Ethanol, n‑Butanol, 2,5-Dimethylfuran, and Biodiesel in Diesel Engines
Experimental and Modeling Investigations on Soot Formation of Ethanol, n‑Butanol, 2,5-Dimethylfuran, and Biodiesel in Diesel Engines
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柴油发动机中乙醇、正丁醇、2,5-二甲基呋喃和生物柴油烟灰形成的实验和模拟研究
DOI：
10.1021/acs.energyfuels.7b01622
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发表时间：
2017
期刊：
影响因子：
5.3
通讯作者：
Mingfa Yao
中科院分区：
文献类型：
--
作者：
Xinlei Liu;Hu Wang;Mingfa Yao
对四种含氧燃料在单缸发动机上燃烧时的碳烟生成进行了实验研究和数值模拟。为了实现这一目标，提出了一种简化的燃烧机制的建模研究，这已被广泛验证。在此基础上，进行了柴油、生物柴油及其与体积分数为20%的乙醇（E20）、正丁醇（B20）和2，5-二甲基呋喃（D20）的混合燃料的直喷压燃实验。在三维模型研究中，简化机理能很好地预测实验燃烧和碳烟排放结果。与燃烧阶段相比，五种燃料的碳烟排放顺序为柴油>生物柴油> B20 > D20 > E20，这主要是由于喷雾燃烧过程中氧含量和燃料反应性的不同。此外，还进行了0-D模拟研究，以阐明不同含氧结构对多环结构的影响。
The soot formation in the combustion of four oxygenated fuels on a single-cylinder engine has been investigated experimentally and numerically. To accomplish this objective, a reduced combustion mechanism was proposed for the modeling studies, which has been extensively validated. Then direct injection compression ignition experiments fueled with diesel, biodiesel, and its blends with 20% volume fraction of ethanol (E20), n-butanol (B20), and 2,5-dimethylfuran (D20) have been conducted. In the three-dimensional (3-D) modeling studies, the reduced mechanism can well predict the experimental combustion and soot emission results. In contrast to the combustion phasing, the soot emissions for the five fuels were sequenced as diesel > biodiesel > B20 > D20 > E20, which was mainly due to the different oxygen content and fuel reactivity in the spray-combustion processes. Furthermore, 0-D modeling investigations were conducted as well to clarify the effects of the different oxygenated structures on the polycyclic ...