基于旋转矢量坐标的LPG发动机逐缸喷气模型  

Cylinder-by-Cylinder Fuel-Injecting Model of LPG Engine Based on Vector Rotator Coordinate

作　　者：肖兵[1] 胡静[1] 罗飞[1] 

机构地区：[1]华南理工大学自动化科学与工程学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》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)

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.

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 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程] TK412[自动化与计算机技术—控制科学与工程]