基于摩擦学特性相似的关节式曲柄连杆机构研究  

The Research on Major-minor Crank-connecting Rod Mechanism in Engine Based on Similar Tribology Characteristic

作　　者：李玉龙[1] 刘焜[2] 

机构地区：[1]合肥学院机械工程系,安徽合肥230022 [2]合肥工业大学机械与汽车工程学院,安徽合肥230009

出　　处：《润滑与密封》2006年第12期85-88,91,共5页Lubrication Engineering

基　　金：安徽省教育厅自然科学研究项目(2004KJ317);合肥学院自然科学研究项目(06KY05ZR)

摘　　要：根据关节式曲柄连杆机构独特的运动学、动力学规律,利用UG软件所提供的表达式、规律曲线和优化等模块,给出使主、副气缸的摩擦学特性尽量保持一致的最佳结构参数,并以仿真曲线的方式再现了运动学和动力学特性的变化规律。结果表明:优化结果跟现行许多发动机采用的参数比较吻合,特性曲线的形状也非常一致,主、副气缸的运动学和动力学性能在5%的差异下保持一致;具有主、副气缸运动学上最大相似性的结构参数,可使得主、副气缸的摩擦力和扭矩尽量一致及平稳性更好。With the special kinematics and kinetics law of major-minor connecting rod mechanism in gas engine, based on expression function integrated into regular curve and optimizing module provided by UG software, the optimized structural parameters of major-minor connecting rod mechanism were educed through minimizing the differences tribology characteristic between in piston of major cylinder and piston of minor cylinder, and kinematics and kinetics characteristics were reappeared with emulational curve mode. Result shows that all ultimate optimization results are relatively consistent with the parameters applied in most current engine, the shapes of characteristic curves are accordant, and the kinematics and dynamics can be similar under 5 percent error between primary and secondary air cylinder. The structural parameters of kinematics has a supreme comparability between primary and secondary air cylinder, and the consistency and stability of torque and friction can be better.

关 键 词：发动机 关节式连杆机构 运动学 动力学 集成方法 

分 类 号：TH133.5[机械工程—机械制造及自动化] U664.124[交通运输工程—船舶及航道工程]