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内燃泵(ICP)是一种直接将指示功转化为液压能的新型动力装置,工作原理与传统发动机不同,其重要运动部件连杆的设计需要具体考虑负荷、质量、强度与稳定性等因素,形成自己的设计方法。建立了连杆有限元模型和优化模型,通过仿真分析,标定工况下,ICP连杆压力负荷比传统发动机约减小14.25%,拉力负荷则约增加232.58%;优化设计后,连杆质量相对传统的发动机可减小23.9%,主要通过减少连杆大小头外圆半径以及杆身厚度实现;连杆应力、变形比传统的发动机略有增加,另外,增加连杆大头过渡圆处半径对减轻或消除应力集中作用较大。
The internal combustion pump (ICP) is a new type of power unit that directly converts the indication power into hydraulic energy. Its working principle is different from that of the traditional engine. The design of the connecting rod of its important moving parts needs to consider the load, quality, strength and stability. Form your own design approach. The finite element model and the optimization model of the connecting rod were established. Under the conditions of simulation and calibration, the pressure load on the ICP connecting rod reduced about 14.25% and the tensile load increased about 232.58% compared with the conventional engine. After optimization, The traditional engine can be reduced by 23.9%, which is mainly achieved by reducing the outer diameter of the connecting rod and the thickness of the shaft. The stress and deformation of the connecting rod slightly increase compared with the conventional engine. In addition, Or eliminate stress concentration effect.