This research aimed to investigate the lubricity and wear properties of ultra-low sulfur diesel fuel (ULSD) blended with biodiesel and doped with biodiesel-based organic compounds. In this work, neat n-dodecane served as a surrogate for ultra-low sulfur diesel fuel (ULSD), Fischer Tropsch, and renewable diesel fuels. Additionally, some pure hydrocarbons were also investigated for unsaturation and carbon chain length. Tribological characterization was conducted on quenched and tempered AISI 4140 steel, substituting diesel fuel pump material, and using the ball-on-disc technique. The wear rates of biodiesel samples were about 2–4 times less than the vegetable oils. Esterification improves the lubricity of vegetable oils. The wear rate of biodiesel is about 5–7 times greater than that of fossil base commercial Eurodiesel fuel. Using biodiesel as an additive had a significant effect on the lubricity of pure n-dodecane, adding 2 wt% biodiesel resulted in 5–7 times wear rate reduction that equivalent to the lubricity level of commercial Eurodiesel fuel. Wear rates of pure hydrocarbons showed that wear is reduced with increasing chain length and unsaturation.

这项研究旨在研究掺入生物柴油并掺入生物柴油基有机化合物的超低硫柴油（ULSD）的润滑性和磨损性能。在这项工作中，整洁ñ-十二烷用作超低硫柴油（ULSD），费托和可再生柴油的替代品。另外，还研究了一些纯烃的不饱和度和碳链长度。在调质的AISI 4140钢上进行摩擦学表征，替代柴油燃料泵的材料，并使用圆盘球技术。生物柴油样品的磨损率比植物油低约2-4倍。酯化改善了植物油的润滑性。生物柴油的磨损率大约是化石基商用欧洲柴油燃料的磨损率的5-7倍。使用生物柴油作为添加剂对纯n的润滑性有显着影响-十二烷，添加2 wt％的生物柴油可将磨损率降低5-7倍，相当于商业化欧洲柴油燃料的润滑性水平。纯碳氢化合物的磨损率表明，磨损随着链长和不饱和度的增加而降低。