内燃机顶置配气凸轮型线的设计  

Designing a valve-train cam profile of OHC

作　　者：谢宗法[1] 卢莉[1] 孔超[1] 刘树臣[1] 

机构地区：[1]山东大学机械工程学院,山东济南250061

出　　处：《山东大学学报（工学版）》2008年第4期84-88,共5页Journal of Shandong University（Engineering Science）

基　　金：国家自然科学基金资助项目(50575129)

摘　　要：设计顶置凸轮机构配气凸轮时,将气门理论运动函数的最大速度点和最大加速度点确定在理想的位置上,可有效地控制加速度曲线的基本形状,并提高了气门升程的丰满系数.然后根据气门和凸轮的几何传动关系,将确定的气门理论运动函数转化为对应的凸轮升程数据.凸轮设计和试验表明:这种设计方法是可行的,新设计的配气凸轮在改善发动机进气性能方面取得了一定的进展.When designing a valve-train cam on OHC, the desirable confignration of the acceleration curve could be obtained by setting the maximum velocity and the maximum acceleration to the expected position, which can result in an increase of tidiness coefficient of the valve lift. Then, the valve movement function was transformed into corresponding cam lift data according to the geometric transmission relationship between the valve and the cam. The cam design and test demonstrate that the design method is feasible and the new designed valve system can improve the intake performance of the engine.

关 键 词：配气机构 顶置凸轮 气门理论运动函数 进气性能 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]