车用发动机配气机构运动学和动力学分析

Kinematic and Dynamic Analysis on Valve Train of Vehicle Engine

应用配气机构模拟计算软件AVL TYCON,针对某车用发动机配气机构,建立运动学和动力学模型,进行运动学和动力学计算.在此基础上分析了配气机构进排气部分的工作特性,着重从气门升程曲线的丰满系数、凸轮与平面挺柱间接触应力,凸轮与平面挺柱间润滑效果以及气门落座特性等方面进行了分析.在模拟计算的基础上,进行配气机构受力测试,进一步确认了模拟计算的有效性.

Using valve train simulation and calculation software AVL TYCON, kinematic and dynamic model are created for valve train of vehicle engine. Kinematic and dynamic calculations are carried out, and the features of intake and outtake valve train are got. Especially, the area of fullness ratio of the valve lift curve, cam to tappet contact stress, lubrication coefficient and the features of valve seating are analyzed. Basing on the simulated calculation of the valve train, the stress measurement is carried out. It shows the validity of simulated calculation.