Spray, atomization and combustion characteristics of oxygenated fuels in a constant volume bomb: A review
Spray, atomization and combustion characteristics of oxygenated fuels in a constant volume bomb: A review
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DOI：
10.1016/j.jtte.2020.05.001
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发表时间：
2020-06
期刊：
影响因子：
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通讯作者：
Peng Zhang;Xin Su;Chengshan Yi;Hao Chen;Hongming Xu;L. Geng
中科院分区：
文献类型：
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作者：
Peng Zhang;Xin Su;Chengshan Yi;Hao Chen;Hongming Xu;L. Geng
生物燃料具有广泛的可利用资源，作为汽车替代燃料具有巨大的潜力。生物燃料的应用优势主要体现在颗粒物（PM）减排、碳中和、温室气体减排、废物利用、能源和经济安全以及燃料多元化等方面。在了解生物燃料分子结构对碳烟形成和颗粒形貌影响的基础上，回顾分析了近年来醇类、醚类、酯类和生物柴油对定容弹喷雾燃烧过程的影响。对于混合物，大分子酯类燃料和聚甲醛二甲醚（PODE）有利于改善液体喷雾，而生物柴油、小分子、二甲醚（DME）和醇类则相反。醇类的加入有利于混合时间的延长和气相混合物的增加。通过对影响因素的综合评价，醇类燃料的喷雾、雾化和燃烧性能最好，生物柴油最差。但就燃烧而言，在不考虑喷雾和雾化的情况下，PODE是最佳选择。综合考虑喷雾、雾化和燃烧性能，对于二元代用柴油混合燃料，甲醇或丁醇是最佳添加剂。为适应柴油机燃料使用的要求，人们提出并探索了三元燃料甚至四元燃料。本文的综述有助于对燃料重组形成系统的认识，并对柴油机清洁高效燃料配方的研究提供指导。
Biofuels have extensive available resources and have an immense potential as promising alternative fuels for automobile. The application advantages of biofuels are mainly reflected as particulate matter (PM) reduction, carbon neutral, greenhouse gases reduction, waste utilization, energy and economic security, and fuel pluralism. Based on the understanding of molecular structure effects of biofuels on soot formation and particles morphology, the effects of alcohols, ethers, esters and biodiesel on spray and combustion process in constant volume bomb in recent years are retrospectively analyzed in this paper. For the mixture, macromolecular ester fuels and polyoxymethylene dimethyl ether (PODE) are conducive to the improvement of liquid spray, while biodiesel, small molecules, dimethyl ether (DME) and alcohols are reversed. Alcohols are advantageous to the extension of mixing time and the increasing of vapor-phase mixture. Through the influence integrated assessment, alcohols show the best performance on the spray, atomization and combustion, while biodiesels show the worst. But in terms of combustion, PODE is the best choice without considering spray and atomization. For binary alternative-diesel fuel blends, methanol or butanol is the best additive based on synthetically considerations on spray, atomization and combustion. To meet the requirements of the fuel application of diesel engine, ternary fuel or even quaternary fuel have been proposed and explored. This review can help to form a systematic understanding on fuel recombining and obtain the guide of clean and efficient fuel formulation for diesel engine.