多缸内燃机缸套的振动位移响应分析  

Analysis for the Vibrational Displacement Response of the Liners of Multi-cylinder IC Engines

作　　者：王义亮[1] 

机构地区：[1]太原理工大学机械工程学院,山西太原030024

出　　处：《机械工程与自动化》2009年第4期1-4,共4页Mechanical Engineering & Automation

基　　金：山西省基础研究计划项目资助(2008011052)

摘　　要：应用有限元方法对某四缸内燃机机体在缸内气体压力、活塞侧推力、活塞摩擦力以及主轴承力作用下的结构动力响应进行了分析,在此基础上,重点对各缸套结构振动的位移响应做了深入研究,并就缸套结构振动对各缸套-活塞系统摩擦学行为的影响做了探讨。研究结果表明:各缸套除了低频整体振动以外,还都包含有比较明显的高频局部振动;缸套结构振动的高频成分将对缸套与活塞之间的摩擦学行为产生影响,使得各缸缸套-活塞系统的摩擦学行为具有时变性,且不同缸缸套-活塞系统的摩擦学行为表现出差异。On the basis of the finite element analysis for the structural dynamic response of a certain 4-cylinder engine block excited by the gas pressures, main bearing forces, piston thrust forces and piston frictions, the dynamic displacement respons- of each liner is studied thoroughly. Then the effects of the liner vibration on the piston/liner tribological behaviors are investigated. It is demonstrated that： （1） There exist not only the lower frequency ensemble oscillation but also the higher frequency local vibration in liner structural vibration t （2） The higher frequency components of the liner vibration will have remarkable impacts on the piston/ liner tribological behaviors, resulting in notable differences in the tribological behaviors among different piston/liner systems and making the tribological behaviors in each piston/liner time dependent.

关 键 词：多缸内燃机 缸套 振动 位移响应 

分 类 号：TK43[动力工程及工程热物理—动力机械及工程] TB53[理学—物理]