Appropriate amount of methyl myristate (C₁₄), methyl palmitate (C₁₆), methyl stearate (C₁₈), methyl oleate (C_18:1), methyl linoleate (C_18:2), and methyl ricinoleate (C_18:1OH) were blended into low-sulfur diesel to conduct the lubrication experiment on four-ball friction tester. Then, based on Materials Studio software, adsorption models of n-tetradecane with various esters on the iron surface were built up. The lubrication performance of diesel blends with 1.0%, 2.0%, 3.0%, and 5.0% (volume fraction) of different esters was improved with the increase of the esters’ fraction. Meanwhile, it is revealed by molecular simulation that the adsorption energy in the film was augmented greatly with the increase in the volume fraction of C₁₄ ester; however, the cohesive energy varied slightly. Therefore, the ester fraction puts more influence on the adsorption energy. Moreover, lubrication experiment of low-sulfur diesel with a given fraction of different esters indicated that the diameter of worn scars decreased with the increase in the length of carbon chain and the number of unsaturated C = C double bond, and at the presence of polar group as well. While via the molecular simulation, the adsorption energy in the films of n-tetradecane with 5% various esters was roughly comparable, but the cohesive energy changed with the carbon chain length, the degree of unsaturation, and the polar group. Namely, the variation of ester composition causes a significant difference in the cohesive energy. Consequently, both the increase of ester fraction and the change of ester composition are effective measures to improve the lubricity of low-sulfur diesel fuel.

适量的肉豆蔻酸甲酯（C ₁₄），棕榈酸甲酯（C ₁₆），硬脂酸甲酯（C ₁₈），油酸甲酯（C _18：1），亚油酸甲酯（C _18：2）和蓖麻油酸甲酯（C _18：1）OH）掺入低硫柴油中，在四球摩擦测试仪上进行润滑实验。然后，基于Materials Studio软件，建立了正十四烷与铁表面各种酯的吸附模型。随着酯类分数的增加，具有1.0％，2.0％，3.0％和5.0％（体积分数）的不同酯的柴油共混物的润滑性能得到改善。同时，通过分子模拟表明，随着C ₁₄体积分数的增加，膜中的吸附能大大增加。酯; 但是，内聚能略有变化。因此，酯级分对吸附能的影响更大。此外，在给定比例的不同酯含量的低硫柴油的润滑实验中，磨损痕迹的直径随着碳链长度和不饱和C = C双键数目的增加以及极性存在而减小。组也是如此。虽然通过分子模拟，在含有5％酯的正十四烷薄膜中的吸附能大致可比，但是内聚能随碳链长度，不饱和度和极性基团而变化。即，酯组成的变化引起内聚能的显着差异。所以，