Recent Studies on Alternative Fuel of Dimethyl Ether

Jixiang Zhang
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Abstract

With the development of industrialization, a large number of non-renewable fuels (such as coal and crude oil) are consumed, and the harmful substances produced in the combustion process of a large number of fossil fuels have caused serious pollution to the atmosphere, and the harmful gases produced by combustion have caused disastrous damage to the ecological balance. Therefore, finding clean energy and exploring alternative fuels are very important in today's society. This paper mainly reviews the studies on the alternative fuels of dimethyl ether (DME). Firstly, the types of alternative fuels currently researched by society and their respective advantages and disadvantages are analyzed, and the preparation of dimethyl ether and its advantages and disadvantages are analyzed in detail. In addition, the physicochemical properties, combustion and emission characteristics of dimethyl ether and diesel are compared and analyzed. The conclusion is that the injection delay angle of dimethyl ether is larger than that of diesel, the ignition delay period is shorter than that of diesel, and the maximum explosion pressure, maximum pressure rise rate and combustion noise of dimethyl ether are lower than that of diesel. The diffusion combustion speed of DME is faster than that of diesel, and the combustion duration is shorter than that of diesel. At the same time, as an alternative energy, dimethyl ether engine has a significant reduction in NOx emission, a very low level of HC and CO emission, and zero soot emission. In conclusion, the DME engine has good performance and emission characteristics.
二甲醚替代燃料研究进展
随着工业化的发展,大量不可再生燃料(如煤、原油)被消耗,大量化石燃料在燃烧过程中产生的有害物质对大气造成了严重污染,燃烧产生的有害气体对生态平衡造成了灾难性的破坏。因此,寻找清洁能源和探索替代燃料在当今社会是非常重要的。本文主要综述了二甲醚(DME)替代燃料的研究进展。首先,分析了目前社会上研究的替代燃料的种类及其各自的优缺点,并详细分析了二甲醚的制备及其优缺点。此外,还对二甲醚和柴油的理化性质、燃烧和排放特性进行了比较分析。结果表明:二甲醚的喷射延迟角比柴油大,点火延迟期比柴油短,最大爆炸压力、最大升压率和燃烧噪声均低于柴油。二甲醚的扩散燃烧速度比柴油快,燃烧持续时间比柴油短。同时,作为一种替代能源,二甲醚发动机的NOx排放显著降低,HC和CO排放水平极低,烟尘排放为零。综上所述,二甲醚发动机具有良好的性能和排放特性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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