基于ADAMS的发动机新型动力输出机构的仿真  

Simulation of New Engine Crank Rocker Mechanism Based on ADAMS

作　　者：关醒权[1] 江帅[1] 刘伟东[1] 孙红[1] 

机构地区：[1]沈阳建筑大学交通与机械工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2015年第2期344-350,共7页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(51176131)

摘　　要：目的研究基于曲柄摆杆机构的发动机动力输出机构,改善传统发动机活塞与气缸的受力状况,提高动力传递效率。方法利用Pro/E三维建模软件构建曲柄摆杆机构发动机的三维实体模型,将其导入到动力学分析软件ADAMS中进行运动学及动力学仿真分析,得到主轴扭矩、连杆摆角、活塞对气缸的侧压力等参数并与传统曲柄连杆发动机对应参数相比较。结果完成了ADAMS的仿真分析,获得了一些仿真数据。结果表明发动机采用曲柄摆杆机构具有可行性,其摆杆摆角在0~0。97°范围内,远小于传统曲轴连杆发动机的相应值。同等燃气压力条件下其气缸侧压力约为传统发动机相应值的1/20。结论通过仿真分析验证,曲柄摆杆作为动力输出机构能够满足发动机工作循环要求,活塞与气缸受力状况比传统发动机有显著的改善,对延长活塞和气缸的工作期限及简化发动机结构均有重要意义。In order to improve the force status of piston and cylinder in traditional engine and to in- crease transfer efficiency, a new engine crank rocker mechanism was designed. A 3D solid model of the mechanism was constructed using Pro/E 3D modeling software; and then kinematical and dynamical simulations for this model were carried out based on the software ADAMS. Parameters for axle torque, connecting rod swing angle and side pressure of piston on cylinder were obtained and compared with the corresponding parameters of traditional engine crank rocker mechanism. It is found that the swing angle of connecting rod is between 0° and 0.97°, which is much smaller than the corresponding value of traditional engine crank rocker mechanism. Under the same gas pressure condition ,the lateral pressure between piston and cylinder is about 1/20 of the traditional one. Conclusion is that the new power output device is feasible to satisfy engine cycle require- ments;the force status of piston and cylinder can be significantly improved. It has significance to extending the piston and cylinder working time and simplifying engine structure.

关 键 词：发动机 曲柄摆杆机构 多体系统 ADAMS 仿真实验 

分 类 号：TK403[动力工程及工程热物理—动力机械及工程]