内燃机缸压调整后活塞的优化设计  

Optimization Design of Piston after Adjusting Cylinder Pressure of Internal Combustion Engine

作　　者：陈延鹏[1] 熊培友[1,2] 刘世英[1] 徐涛 任维宣 

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255049 [2]山东滨州渤海活塞股份有限公司,山东滨州256602

出　　处：《煤矿机械》2016年第3期101-105,共5页Coal Mine Machinery

基　　金：山东省自然科学基金(ZR2010EM070)

摘　　要：针对某柴油机试验后出现活塞火力岸及缸孔拉伤失效问题,使用AVL EXCITE Piston&Rings软件建立了活塞组件动力学分析模型,对活塞2阶运动进行研究,并针对不同活塞销孔偏心、裙部及头部型线优化方案进行对比,得到了最优的改进方案,并成功解决活塞及缸套拉伤失效问题。当活塞热负荷增大或2阶运动动作幅度增大时,应适当加大火力岸的直径缩减量,这样对预防火力岸和缸套发生接触有利。Basing on the failure problems of piston top land and cylinder bore of a diesel engine after test,we establish the dynamic model of the piston component and study the piston secondary motion. Then by comparing different piston pin offset,different profile of piston skirt and crown,we get an optimized design, and successfully solve the failure of piston and cylinder. When the piston heat load increases or the amplitude of the piston secondary motion increasing, reduction of top land diameter should be appropriately increased, it is beneficial to preventing contact between top land and cylinder.

关 键 词：活塞动力学 2阶运动 销孔偏心 活塞型线 优化 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]