Abstract Fuels used in various combustion engines necessitate deep understanding of the fuel components before being used as a feedstock with present engine technology. Fuel components impact the efficiency of the engine along with the formation of pollutant emissions. Aromatics are important component of the fossil-based diesel fuel, which highly affects the tailpipe emissions. Therefore, the study of aromatics has a great significance for diesel engine. A comprehensive study with a total of 13 different aromatics was performed to investigate the impact of their structure and content on diesel engine characteristics. Diesel, pure higher chain alkanes and single added aromatics were blended as ternary mixture. Detailed spray investigations were carried out at an injection pressure of 200 bar using a three-hole nozzle of diesel engine. The aromatic structure and content highly influenced the emission and performance characteristics. A blending ratio of 10% aromatics in base fuel shows promising results compared to 5% and 15% blending content of aromatics in the base fuel. Higher aromatics blending in ternary mixture led to higher particulate matter, carbon monoxide, and unburnt hydrocarbon emissions. Due to higher degree of unsaturation, polycyclic single and double ring aromatics produce higher pollutant emissions compared to single ring monocyclic aromatics.

中文翻译：

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在压燃式发动机中测试具有可变芳烃类型和含量的配制燃料

摘要 用于各种内燃机的燃料在用作现有发动机技术的原料之前需要对燃料成分有深入的了解。燃料成分会影响发动机的效率以及污染物排放的形成。芳烃是化石柴油的重要组成部分，对尾气排放影响很大。因此，芳烃的研究对柴油机具有重要意义。对总共 13 种不同的芳烃进行了综合研究，以研究它们的结构和含量对柴油发动机特性的影响。柴油、纯高链烷烃和单一添加的芳烃作为三元混合物混合。使用柴油发动机的三孔喷嘴在 200 bar 的喷射压力下进行了详细的喷雾研究。芳香族结构和含量极大地影响了排放和性能特性。与基础燃料中芳烃的混合含量为 5% 和 15% 相比，基础燃料中芳烃的混合比例为 10% 显示出有希望的结果。三元混合物中混合更多的芳烃会导致更高的颗粒物、一氧化碳和未燃烧的碳氢化合物排放。由于较高的不饱和度，与单环单环芳烃相比，多环单环和双环芳烃产生更高的污染物排放。和未燃烧的碳氢化合物排放。由于较高的不饱和度，与单环单环芳烃相比，多环单环和双环芳烃产生更高的污染物排放。和未燃烧的碳氢化合物排放。由于较高的不饱和度，与单环单环芳烃相比，多环单环和双环芳烃产生更高的污染物排放。