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The Impact of Alternative Fuels on Fuel Consumption and Exhaust Emissions of Greenhouse Gases from Vehicles Featuring SI Engines

机译:替代燃料对来自SI发动机的车辆的温室气体燃料消耗和废气排放的影响

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Various alternative fuels are candidates for partial or total replacement of fossil fuel for spark ignition (SI) engines used in the transport sector. These include ethanol (already in use in blends), compressed natural gas (CNG) (popular in certain markets) and liquid petroleum gas (LPG) (popular in other markets). These fuels are all suitable for use in SI engines, but their physicochemical parameters differ from those of standard petrol. Specifically, their carbon weight fraction and the energy density differ significantly; these two factors (among others) strongly control fuel consumption and exhaust emissions of greenhouse gases (GHG), including carbon dioxide (CO2). This study considers chassis dynamometer data obtained under laboratory conditions. Results from the literature and from experiments conducted by the authors show a range of responses in terms of exhaust emissions of GHG for different fuel types. CNG in particular shows low CO2 emissions, but ethanol blends show virtually no change in CO2 emissions and an increase in volumetric fuel consumption.
机译:各种替代燃料是用于运输领域中使用的火花点火(Si)发动机的化石燃料的部分或完全替代的候选者。这些包括乙醇(已经在混合物中使用),压缩天然气(CNG)(在某些市场中流行)和液体石油气(LPG)(在其他市场中普遍存存)。这些燃料都适用于Si发动机,但它们的物理化学参数与标准汽油的物理化学参数不同。具体地,它们的碳重量和能量密度显着不同;这两个因素(其中)强烈控制温室气体(GHG)的燃料消耗和废气排放,包括二氧化碳(CO2)。本研究考虑了在实验室条件下获得的底盘测力计数据。文献和作者进行的实验结果表明,在温室气体的气流排放的响应范围内,对于不同的燃料类型。 CNG尤其显示出低二氧化碳排放,但乙醇共混物在二氧化碳排放几乎没有变化和体积燃料消耗的增加。

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