直喷式增压柴油机燃烧过程数值模拟的研究

本通过对直喷式增压柴油机燃烧过程的研究，提出了基于脉冲喷雾空气混合，不同几何尺寸的单油滴蒸发，以及着火滞后期的时域跟踪法等子模型建立的直喷式增压柴油机燃烧过程的双区计算模型，章讨论了模型的主要假设，给出了计算公式和离散方法，中给出的计算值与试验值的比较，证明了该模型的可行性和实用性。

Research on the Predicting Model for Combustion Process in Direct Injection Supercharged Diesel Engines

This paper presents a double--zone model for combustion process in direct injection supercharged diesel engines based on the subroutines such as air entrainment, spray evaporation withreal droplet diameter distribution and igniting delay period using increment-tracing method. Themodel hypotheses are discussed, the mathematic equations and discrete methods are shown. The comparison between calculating examples and experimental results presented in the paper confirmsthe feasibility and practicability of the model.