为了分析实际生物柴油的燃烧特性,综合考虑了燃料的分子量、碳氢比、化学键能和十六烷值等特性,基于丁酸甲酯、醋酸乙酯、癸酸甲酯与正十二烷四种燃料,采用配平原子个数和十六烷值的方法构建了反映生物柴油基本燃烧特性的一种新的替代燃料模型。通过不同工况下模拟结果与实验数据的比较,对该方法的合理性进行了验证,结果表明该替代燃料模型能较好地预测生物柴油在不同压力、温度和当量比下的氧化过程。该机理构成方法为替代燃料机理的构建提供了新的思路。 In order to analyze the combustion characteristics of the actual biodiesel, considering the characteristics of the molecular weight, the hydrocarbon ratio, the chemical bond energy and the cetane number of the fuel, methyl butyrate, ethyl acetate, methyl caprate and n-dodecane tetra A kind of new alternative fuel model reflecting the basic combustion characteristics of biodiesel was constructed by using the number of coot atoms and cetane number. The rationality of this method is verified by comparing the simulation results with the experimental data under different working conditions. The results show that the alternative fuel model can predict the oxidation process of biodiesel under different pressure, temperature and equivalence ratio. The mechanism constitutes a new idea for the construction of alternative fuel mechanism.