基于AMESim的单缸轴向约束活塞液压发动机流量脉动研究

单缸轴向约束活塞液压发动机作为一种新型的双元动力源,通过活塞销与柱塞的直接连接和保留传统发动机的曲柄连杆机构,使其可以同时输出液压能和旋转机械能,而且在机-液能量转化上,缩短动力传递链,减小能量损失,但是单缸发动机工作存在不稳定性,容易引起输出高压油的流量脉动较大.通过AMESim仿真软件搭建单缸轴向约束活塞液压发动机...

Research on Flow Pulsation of Single Cylinder Axial Confined Piston Hydraulic Engine Based on AMESim

Single cylinder axial confined piston hydraulic motor is a new type of dual power supply, through directly connecting plunger with piston pin and preserving traditional engine crank connecting rod mechanism, it can output hydraulic energy and rotating mechanical energy at the same time, and on the machine-liquid energy conversion, the power transfer chain is shortened, the energy loss is reduced.But single cylinder engine works unstabitily. It is easy to cause large flow pulsation of output high-pressure oil. The mechanical-hydraulic simulation model of single cylinder axial confined piston hydraulic engine was built by AMESim simulation software, and the plunger motion characteristics, pump cavity flow characteristics and output hydraulic oil pulsation characteristics in the mechanical-hydraulic power transfer chain were studied. The simulation results show that the plunger movement and pump cavity flow characteristics meet the design requirements of hydraulic engine and the flow pulsation of output hydraulic oil can be improved greatly through the reasonable selection of accumulator.