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Size distributions of soot particles in premixed flames of gasoline distillates

机译：汽油馏出物预混火焰中烟尘颗粒的尺寸分布

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摘要

The soot particle size distribution in premixed flames of the light and heavy distillate fraction of gasoline was measured. The results were also compared with particles yielding from the not-distilled gasoline to study the difference in soot formation tendency between the practical fuel and its distillates. It was observed that the particle size distribution from the light and heavy distillates was similar with that of gasoline in a qualitative level, showing typical unimodal and bimodal distribution. Also, the heavy distillate had much higher particle growth rate than the light distillate, and those of gasoline were between the two distillates. However, the particle nucleation strength in premixed gasoline flames was higher than that in flames of either distillate and this also caused a higher particle number density, demonstrating that a synergistic effect on particle nucleation existed between the light and heavy distillate fractions. (C) 2019 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
机译：测量了汽油的轻馏分和重馏分的预混火焰中烟灰的粒度分布。还将结果与未蒸馏汽油产生的颗粒进行比较，以研究实际燃料与其馏出物之间形成烟灰的趋势。观察到，轻质和重质馏出物的粒径分布在质量上与汽油相似，表现出典型的单峰和双峰分布。另外，重质馏出物的颗粒生长速率比轻质馏出物高得多，而汽油馏分在两种馏出物之间。然而，预混合汽油火焰中的颗粒成核强度高于任一馏出物火焰中的颗粒成核强度，这也导致更高的颗粒数密度，表明轻质馏分和重质馏分之间存在对颗粒成核的协同作用。 （C）2019燃烧研究所。由Elsevier Inc.出版。保留所有权利。

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