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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers >Experimental investigation of the effect of the intake air temperature and mixture quality on the combustion of a methanol- and gasoline-fuelled homogeneous charge compression ignition engine
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Experimental investigation of the effect of the intake air temperature and mixture quality on the combustion of a methanol- and gasoline-fuelled homogeneous charge compression ignition engine

机译：进气温度和混合气质量对甲醇和汽油均质充量压缩点火发动机燃烧影响的实验研究

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摘要

Environmental concerns have increased significantly all over the world in the past decade. To fulfil the simultaneous emission requirements for near-zero pollutant and low carbon dioxide (CO2) levels, which are the challenges for the future powertrains, many studies are currently being carried out on new engine combustion processes, such as controlled autoignition for gasoline engines and homogeneous charge compression ignition (HCCI) for diesel engines. These combustion processes have the potential for ultra-low nitrogen oxide (NO^sub x^) and particulate matter emissions in comparison with conventional gasoline or diesel engines. In this paper, the combustion characteristics of a HCCI engine fuelled with methanol and gasoline were investigated on a modified two-cylinder four-stroke engine. The port fuel injection technique is used to prepare a homogeneous charge of fuel and air. The experiment is conducted with various intake air temperatures ranging from 120 ° C to 160 ° C at different air-to-fuel ratios, for which stable HCCI combustion is achieved. The experimental results indicate that the inlet air temperature and air-to-fuel ratio have a significant effect on the maximum in-cylinder pressure and its position relative to top dead centre, the shape of the pressure rise curve, and the heat release rates. The results confirm that the inlet air temperature is a very sensitive parameter in controlling combustion timing and thus the effectiveness of the HCCI combustion process. [PUBLICATION ABSTRACT]
机译：在过去的十年中，全世界对环境的关注大大增加。为了满足近零污染物和低二氧化碳（CO2）水平的同时排放要求，这是未来动力总成的挑战，目前正在对新的发动机燃烧过程进行许多研究，例如汽油发动机的受控自动点火和柴油发动机的均质充量压缩点火（HCCI）。与传统的汽油或柴油发动机相比，这些燃烧过程具有排放超低氮氧化物和颗粒物的潜力。在本文中，研究了在改进的两缸四冲程发动机上以甲醇和汽油为燃料的HCCI发动机的燃烧特性。进气道燃料喷射技术用于制备均匀的燃料和空气。该实验是在进气温度从120°C到160°C的不同进气温度下进行的，以实现稳定的HCCI燃烧。实验结果表明，进气温度和空燃比对最大缸内压力及其相对于上止点的位置，压力上升曲线的形状和放热率都有显着影响。结果证实，进气温度是控制燃烧正时并因此控制HCCI燃烧过程有效性的非常敏感的参数。 [出版物摘要]

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