摘要
摘要以往对下置凸轮轴式配气机构进行动力学计算时,都把机构刚度和摇臂比视为常数.实际上,这种机构的刚度和摇臂比都是随凸轮转角变化的,且有时变化范围较大.本文目的是考察刚度和摇臂比变化对凸轮轴下置式配气机构动力学计算结果的影响.作者采用两种模型对492QA汽油机配气机构多种转速下的运动规律进行了变刚度、变摇臂比和定刚度、定摇臂比的动力学计算,并将两种情况下的计算结果作了对比分析,得出了在刚度和摇臂比变化较大的凸轮轴下置式配气机构动力学计算中应考虑这种变化的结论.
Effect of variations in stiffness and rocker ratio which are sometimes notable on results of dynamics calculation of a valve train with side-mounted camshaft was studied. Dynamic behaviors of valve train of 492QA gasoline engine with variable and constant stiffness and rocker ratio were computed respectively at various camshaft speeds using two different models. Comparative discussions were made and a conclusion was achieved that dynamic simulation of valve train with side-mounted camshaft should account of variations in stiffness and rocker ratio if they are remarkable.
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
1993年第2期147-152,共6页
Transactions of Csice
