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Diesel Internal Combustion Engine Emissions Measurements for Methanol-Based and Ethanol-Based Biodiesel Blends

机译：甲醇基和乙醇基生物柴油混合物的柴油内燃机排放测量

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摘要

There is a recent interest for the utilisation of renewable and alternative fuel, which is regulated by the European Union, that currently imposes a lower limit of 7% by volume of biodiesel fuel blend in diesel fuel. The biodiesel physical characteristics, as well as the percentage of biodiesel blend in diesel fuel, affect the injector nozzle flow, the spray characteristics, the resulting air/fuel mixture, and subsequently the combustion quality and emissions, as well as the overall engine performance. In the present study, two different types of pure biodiesel fuel, namely, methanol-based biodiesel and ethanol-based biodiesel, were produced in the laboratory of Frederick University by chemical processing of raw materials. The two biodiesel fuels were used for blending pure diesel fuel at various percentages. The blends were used for smoke emissions measurements of a diesel internal combustion engine at increasing engine speed and for increasing engine temperatures. From the experimental investigations it was found that ethanol-based biodiesel blends result in higher smoke emissions than pure diesel fuel, while methanol-based biodiesel blends smoke emissions are lower compared to pure diesel fuel.
机译：最近，人们对利用可再生燃料和替代燃料产生了兴趣，这受到欧盟的管制，目前对柴油中生物柴油燃料混合物的体积下限设定为7％。生物柴油的物理特性以及柴油中生物柴油混合物的百分比会影响喷射器的喷嘴流量，喷雾特性，产生的空气/燃料混合物，进而影响燃烧质量和排放，以及整体发动机性能。在本研究中，两种不同类型的纯生物柴油燃料，即甲醇基生物柴油和乙醇基生物柴油，是通过在弗雷德里克大学的实验室中对原材料进行化学处理而生产的。两种生物柴油用于混合各种比例的纯柴油。该掺合物用于在发动机转速增加和发动机温度升高的情况下测量柴油内燃机的烟雾排放。从实验研究中发现，乙醇基生物柴油混合物的烟气排放量比纯柴油燃料高，而甲醇基生物柴油混合物的烟气排放量比纯柴油燃料低。

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