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A comparative investigation of C6-C15 hydrocarbons emitted from a passenger car powered by unleaded petrol and 10 ethanol fuel

机译：由无铅汽油和10％乙醇燃料驱动的乘用车排放的C6-C15碳氢化合物的比较研究

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摘要

Twenty-three non-methane hydrocarbons were captured from the exhaust of a car operating on unleaded petrol (ULP) and 10% ethanol fuels at steady speed on a chassis dynamometer. The compounds were identified and quantified by GC/MS/FID and their emission concentrations at 60 km/h, 80km/h and idle speed were evaluated. The most abundant compounds in the exhaust included n-hexane, n-heptane, benzene, toluene, ethyl benzene, m- and p-xylenes, and methylcyclopentane. Because of the large number of compounds involved, no attempt was made to compare the emission concentrations of the compounds. Rather the sum of the emission concentrations for the suite of compounds identified was compared when the car was powered by ULP and 10% ethanol fuel. It was evident from the results that the emission concentrations and factors were generally higher with ULP than with 10% ethanol fuel. The total emission concentrations with the ULP fuel were 2.8, 4.2 and 2.6 times the corresponding values for the 10% ethanol fuel at 60km/h, 80km/h and idle speed, respectively. The implications of the results on the environment are discussed in the paper.
机译：在底盘测功机上以恒定速度从使用无铅汽油（ULP）和10％乙醇燃料运行的汽车排气中捕获了23种非甲烷碳氢化合物。通过GC / MS / FID对化合物进行鉴定和定量，并对它们在60 km / h，80 km / h和怠速下的排放浓度进行了评估。排气中最丰富的化合物包括正己烷，正庚烷，苯，甲苯，乙苯，间二甲苯和对二甲苯以及甲基环戊烷。由于涉及的化合物数量众多，因此未尝试比较化合物的排放浓度。而是比较了使用ULP和10％乙醇燃料为汽车提供动力时所识别出的一系列化合物的排放浓度总和。从结果可以明显看出，ULP的排放浓度和排放因子通常高于10％的乙醇燃料。 ULP燃料的总排放浓度分别是60％/ h，80km / h和怠速时10％乙醇燃料相应值的2.8、4.2和2.6倍。本文讨论了结果对环境的影响。

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