simulink与实体建模软件联合仿真，建立了曲柄连杆活塞机构动力学模型，形成可视化仿真，运行mdl文件即可。对发动机分析设计人员有启示。-simulink co-simulation and solid modeling software, the establishment of a dynamic model of the crank rod piston mechanism, a visual simulation run mdl files can. Engine analysis a