建立了高温高压条件下的油滴蒸发模型，并在不同的工质压力和温度下对模型进行了验证，模型计算结果和实验结果吻合良好。将此油滴蒸发模型和油膜蒸发模型相结合，应用到涡流室式柴油机的燃油蒸发过程中，通过三维数值模拟计算，研究了燃油蒸发过程中燃料蒸气浓度和工质温度场的变化历程以及燃油蒸发对涡流室平均温度和平均压力的影响。 The model of oil droplet evaporation under high temperature and high pressure was established, and the model was verified under different working pressure and temperature. The calculated results agree well with the experimental results. Combining the oil droplet evaporation model and the oil film evaporation model, the model is applied to the fuel evaporation process of a vortex chamber diesel engine. Through the three-dimensional numerical simulation calculation, the variation course of the fuel vapor concentration and the working temperature field as well as the fuel Effect of evaporation on average temperature and pressure in vortex chamber.