对置活塞液压输出发动机同步驱动机构动力学分析
Dynamics Analysis on Synchronization Drive Mechanism of Opposed-Piston Hydraulic-Output Engine

结合一种新型对置活塞液压输出发动机（OPHO）整体设计概念，根据其同步驱动机构的工作原理建立了数学理论模型，并运用多体动力学软件Adams搭建了该机构与传统曲柄连杆机构动力学仿真分析模型，得到了该同步驱动机构关键运动部件的受力情况.仿真分析结果表明，OPHO发动机的动力活塞在竖直方向的侧向力较小，缓解了气缸壁磨损的现象，延长了发动机及其零部件使用寿命.其同步驱动机构采用对称布置形式，发动机在水平方向的振动和受力可被抵消，因而发动机的整体平衡性较好.
Based on the design principle of a new type of opposed-piston hydraulic-output engine (OPHO),a mathematical model was established according to the working principle of the synchronization drive mechanism,and the multi-body dynamics software Adams was used to build the simulation models separately for this mechanism and the conventional crank-link engine to analyze the force of the critical moving parts of the synchronization drive mechanism.The dynamic simulation results show that,compared to the crank engine,the lateral force on the power piston of OPHO engine in the vertical direction is small,which is conducive to reducing the mechanical loss between the piston and the cylinder wall,thus alleviating the phenomenon of cylinder wall wear and extending the life of engine and its parts to a certain extent.On the other hand,the synchronization drive mechanism is of symmetrical arrangement,the vibration and the force of the engine in the horizontal direction can be counteracted,and the overall balance of the engine is better