摘要
针对发动机平均值模型不能反映气缸间的差异性、控制精度难以满足日益苛刻的排放法规的要求的问题,文中以液化石油气(LPG)单燃料发动机为对象,提出了一种基于独创的旋转矢量坐标的发动机逐缸燃气喷射模型,并给出了6102LPG发动机6个独立气缸在一个燃料周期的燃气喷射量的具体表达式.试验结果表明,该模型能较准确地计算各气缸应喷射的燃气量,计算精度满足实际应用要求.
As the mean-value engine model can not express the differences between cylinders and the corresponding precision is not high enough to satisfy the strict emission laws, this paper presents a cylinder-by-cylinder fuel-injecting model based on the vector rotator coordinate by taking the single-fuel LPG engine as the object, and then proposes an equation to describe the fuel injection of the six independent cylinders of a 6102LPG engine in a fuel life cycle. Experimental results show that the proposed model can accurately estimate the fuel charge of each cylinder, and that the precision satisfies the application requirements well.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第1期89-93,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(60474042)
广东省自然科学基金资助项目(04020000)
关键词
旋转矢量坐标
逐缸控制
燃气喷射
控制模型
LPG发动机
vector rotator coordinate
cylinder-by-cylinder control
fuel injection
control model
LPG engine
