NSF/DOE Partnership on Advanced Combustion Engines: Ignition and Combustion Characteristics of Transportation Fuels under Lean-Burn Conditions for Advanced Engine Concepts

摘要#1258720Lee，Seong-Young在内燃机(ICE)中使用二甲醚(DME)与汽油和柴油相比具有显著的优势，可以产生非常低的NOx排放和零颗粒物(PM)。一种用途是通过低温燃烧(LTC)战略，其重点是(I)开发二甲醚燃烧的预测能力和(Ii)开发高压(1500巴)二甲醚燃料喷射系统。基础、现象学和定量研究将在广泛的压力和温度范围内进行，利用最先进的实验设备以及强大的协同理论和计算努力。其成果将是DME高压喷雾燃烧的全面表征，作为热化学和化学动力学参数的函数的高度稀释DME自燃(即发动机爆震)现象的确定，排放和燃烧效率的计算流体动力学(CFD)预测工具的开发，以及高压DME燃料系统的优化。在密歇根理工大学、阿贡国家实验室、替代燃料技术公司和航星公司的这项联合努力中，将利用各个合作伙伴的实验设施和专业知识。这一合作不仅将有助于开发以二甲醚为燃料的先进的内燃机，还将产生重大的教育影响。综合教育计划通过与阿贡国家实验室和工业合作伙伴的密切合作，为学生提供研究机会。

Abstract#1258720Lee, Seong-YoungUse of dimethyl ether (DME) in the internal combustion engine (ICE) has significant advantages over gasoline and diesel fuels, potentially yielding very low NOx emissions and zero particulate matter (PM). One usage is through low-temperature combustion (LTC) strategies, the focus of which aims to (i) develop a predictive capability for DME combustion and (ii) develop a high-pressure (1500 bar) DME fuel injection system. Fundamental, phenomenological, and quantitative studies will be carried out over a wide range of pressures and temperatures, utilizing state-of-the-art experimental facilities along with strong synergistic theoretical and computational efforts. The outcome will be a comprehensive characterization of DME high-pressure spray combustion, a determination of highly dilute DME autoignition (i.e., engine knock) phenomenon as a function of thermo-chemical and chemical kinetic parameters, development of computational fluid dynamics (CFD) predictive tools for emissions and combustion efficiency, and optimization of a high pressure DME fuel system. In this joint effort among Michigan Technological University, Argonne National Laboratory, Alternative Fuel Technology, and Navistar, the experimental facilities and expertise of individual partners will be leveraged. Not only will this collaboration contribute to the development of an advanced ICE fueled with DME, significant educational impacts will also result. An integrated educational program provides research opportunities for students through close collaboration with Argonne National Laboratory and the industrial partners.