摘要
提出了含5个待定系数的修正韦伯函数,并应用多元非线性回归技术确定这些系数,模拟了具有双火焰区燃烧模式和稀燃 速燃特性的汽油机射流燃烧系统燃烧室中混合气的燃烧特性,从而成功地借助示功图分离出对分析整个燃烧过程至关重要的各火焰区中的质量燃烧率和火焰速比等参数,构成了实用的附有双火焰区的三区准维燃烧分析模型。应用实例表明,该函数与多区模型相结合,将在火花点火发动机燃烧模拟中具有强大生命力。
In this paper, a revised Weber function with Five factors to be defined by the method of multielement nonlinear regression is put forward for the first time and the combustion characteristics of mixture of two flame zones with lean burn and rapid burn in jet combustion chamber of gasoline engines are modeled. Therefore the most important parameters to the analyses of combustion process, such as mass burning rate and FSR in flame zones are determined successfully by aid of the measurement of indicator diagram . As a result, the effective and useful model of three zones quasidimensional combustion diagnosis with two flame zones is presented. Actual application shows that the new function combined with multizone model processes potential vitality in combustion modeling of S.I. engine.
出处
《燃烧科学与技术》
EI
CAS
CSCD
2002年第5期457-460,共4页
Journal of Combustion Science and Technology
关键词
待定系数
修正
韦伯函数
发动机
多火焰区
燃烧模型
多元非线性回归技术
射流燃烧室
三区准维燃烧
汽油机
revised Weber function with five factors to be defined
method of multielement nonlinear regression
jet combustion chamber
two flame zones
model of three zones quasidimensional combustion diagnosis