运用分段对数正态函数拟合HCCI燃烧放热规律的研究

Study on Fitting Heat Release Rate of HCCI Combustion with Partition Lognormal Distribution Function

在分析对数正态函数在HCCI燃烧放热率研究中的运用及其存在问题的基础上,首次提出了分段对数正态函数,并用其拟合了HCCI燃烧的实际放热率曲线。结果表明,分段对数正态函数可以充分反映HCCI燃烧的阶段性特征,拟合效果更好。

On the base of analyzing the application and existing problems of lognormal distribution function in the research of HCCI combustion heat release rate, the partition lognormal distribution function was proposed firstly and the curve of heat release rate for HCCI combustion was fit with the function. The result indicated that the partition lognormal distribution function could reflect the stage characteristics of HCCI combustion and had better fitting effects.