The diesel spray process is one of the critical development zones in terms of diesel engine-out emission regulations. Detailed analysis of Palmarosa oil methyl esters fuel spray properties has been studied and made a comparison analysis with mineral diesel. Experiments under various injection pressures (200, 225, and 250 bars) have been investigated in a constant volume chamber (CVC). Studies have shown that the longest and shortest spray tip penetrations (STPs) for biodiesel and diesel were observed. A higher spray cone angle of about 17.5 ms for PMO fuels and 11.4 ms for diesel were found. The Sauter mean diameter for all test blends decreased with an increase in fuel injection pressure with the maximum reduction of 15 μm. Additionally, the spray volume of 0.4 cm³ and spray area of 5 cm² increased respectively during 250 bars injection pressure. STP increased by 14.3 ms for Palmarosa oil methyl ester than diesel at 250 bars injection pressure. It is concluded that the fuel properties such as density and viscosity are the main influencing factors for spray analysis and play a significant role in the fuel injection system.

中文翻译：

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恒容室中Palmarosa生物柴油-柴油混合物的喷雾分析实验研究

柴油喷涂工艺是柴油机排放法规的关键开发区之一。详细分析了棕榈油甲酯燃料喷雾性能，并与矿物柴油进行了对比分析。已在恒容室 (CVC) 中研究了各种注射压力（200、225 和 250 巴）下的实验。研究表明，观察到生物柴油和柴油的最长和最短喷雾尖端穿透 (STP)。发现 PMO 燃料的喷射锥角较高，约为 17.5 毫秒，柴油为 11.4 毫秒。所有测试混合物的 Sauter 平均直径随着燃油喷射压力的增加而减少，最大减少 15 μm。此外，0.4 cm ³的喷雾体积和5 cm ^{2 的}喷雾面积在 250 巴注射压力期间分别增加。在 250 巴喷射压力下，Palmarosa 油甲酯的 STP 比柴油增加 14.3 毫秒。得出的结论是，密度和粘度等燃料特性是喷雾分析的主要影响因素，在燃料喷射系统中起着重要作用。