柴油机准维燃烧模型中经验参数确定的研究

选用２４０单缸柴油机作为试验样机，将由准维燃烧模型所得的放热规律与工作过程数值计算结合，以模拟计算出的爆发压力、功率与实测值最接近作为目标函数，应用正交网格法确定准维模型中的几个经验参数，并建立宏观等效系统计算瞬态热交换系数，从而完成了柴油机准维燃烧模型中经验参数确定的研究。

A Study on Determining Empirical Parameters of Quasi-Dimensional Combustion Model in a Diesel Engine

This paper uses single-cylinder diesel engine of 240 in bore as experimental engine.Numerical computation for working process is combined with heat release rate calculated by quasi-dimensional combustion model.The objective function is that the calculated cylinder-peak pressure and power output are closest to the measured ones.Orthogonal network method is applied to calculate several empirical parameters of quasi-dimensional combustion model,and an equivalent thermodynamic system is established to calculate instantaneous heat transfer coefficient among each zone.Therefore this paper accomplishes the research on determining several empirical parameters of quasi-dimensional combustion model.