基于Excite-Timing Drive的正时同步带系统动力学分析

摘要

Here,a dynamic simulation of a synchronous belt drive of a kind of engines was performed using AVL-EXCITE TD software.The dynamic characteristics of the belt versus rotating speed were analyzed.The influence factors on the dynamic characteristics of the synchronous belt drive were also analyzed and optimized.The results showed that the reduction of the crankshaft speed fluctuations can improve the dynamic performance of the synchronous belt drive effectively.The results provided a basis for design of a valve system,and essential boundary conditions for analysis of a valve system,a timing system and overall NVH performance.%应用发动机分析软件AVL-ETD,对某四缸汽油机正时同步带传动系统进行动力学仿真计算.分析各转速下皮带动力学特性,对正时同步带系统动力学特性影响因素进行分析优化,获得降低曲轴的转速波动能有效提高正时同步带系统动力学性能.不仅为配气阀系及正时系统构件的改进设计提供依据,且为配气阀系、正时系统及整机NVH性能等分析提供必须的边界条件.