分段韦伯函数拟合HCCI燃烧放热规律的研究  

Study on Resembling the Heat Release Rate of HCCI Combustion with Partition Webie Function

作　　者：罗伟欢[1] 熊锐[1] 

机构地区：[1]广东工业大学机电工程学院汽车系,广东广州510006

出　　处：《小型内燃机与摩托车》2008年第3期15-18,共4页Small Internal Combustion Engine and Motorcycle

摘　　要：研究HCCI燃烧放热规律有助于对HCCI燃烧的控制研究,韦伯函数是拟合燃烧放热率中应用最多的函数,但是由于HCCI燃烧的复杂性以及韦伯函数的局限性,拟合效果不是特别好。本文分析了韦伯函数在HCCI燃烧放热率研究中的运用及其存在的问题,首次提出了分段韦伯函数,并拟合了HC-CI实际燃烧放热率曲线,结果表明,分段韦伯函数可以反映HCCI燃烧的阶段性,获得更好的拟合效果,适用性更佳。It＇s helpful for studying combustion control of HCCI to research the heat release rate of HCCI combustion, Webie function is the function used to resemble the combustion heat release rate most frequently, but due to the complexity of HCCI combustion and the limitation of Webie function, it couldnt resemble closely. This paper analyzes the application and problems of Webie function in the researching of HCCI combustion heat release rate, proposes the Partition Webie Function for the first time, and resembles the curve of HCCI combustion heat release rate. The results indicate that Partition Webie Function can reflect the phases phenomenon, and its application is more flexible.

关 键 词：分段韦伯函数 放热率 韦伯函数 HCCI燃烧 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]