The physicochemical properties of nine summer base diesel fuels were compared. The influence of the group hydrocarbon composition on the low-temperature properties was examined using two fuels with similar physicochemical properties as examples. The physicochemical characteristics of the fuel were shown not to be definitive, rather, its detailed group chemical composition reflecting the molecular-mass distribution of n -alkanes and ratio of mono-, bi-, and polycyclic aromatic hydrocarbons that affect the injectivity of the fuel additives was important. A study of the cold filter plugging point and pour point of these fuels in the presence of two depressant additives based on ethylene-vinyl acetate copolymers showed that additive 1 exhibited more universal properties in fuels differing in group chemical composition while additive 2 reduced effectively the cold filter plugging point in fuels with lower contents of high-melting n -alkanes and exhibited pour point depression comparable to that of additive 1 in fuels with high contents of this hydrocarbon group.

中文翻译：

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柴油的组烃组成对抑制剂添加剂效率的影响

比较了九种夏季基础柴油的理化性质。以两种理化性质相似的燃料为例，研究了组烃组成对低温性能的影响。燃料的物理化学特性显示不是确定的，而是其详细的组化学组成反映了正烷烃的分子质量分布以及影响燃料喷射性的单环、双环和多环芳烃的比例添加剂很重要。