基于缸套失圆的活塞环结构参数对密封与摩擦性能的影响研究  

Effects of Piston Ring Structural Parameters on the Sealing and Friction Performance Considering Cylinder Liner Out-of-Round Deformation

作　　者：毕玉华[1] 宋健平 陈思吉 王治[1] 于凤荣[2] 温世杰 BI Yuhua;SONG Jianping;CHEN Siji;WANG Zhi;YU Fengrong;WEN Shijie(Yunnan Province Key Laboratory of Internal Combustion Engines,Kunming University of Science and Technology,Kunming 650500,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650500,China;China North Engine Research Institute(Tianjin),Tianjin 300400,China)

机构地区：[1]昆明理工大学云南省内燃机重点实验室,昆明650500 [2]昆明理工大学冶金与能源工程学院,昆明650500 [3]中国北方发动机研究所(天津),天津300400

出　　处：《内燃机工程》2023年第1期34-44,共11页Chinese Internal Combustion Engine Engineering

基　　金：基础性军工科研院所稳定支持科研项目(WDZC-2019-JGKK-01)。

摘　　要：以某非道路高压共轨柴油机为研究对象,采用仿真和测试相结合的方法,建立了整机耦合装配模型与活塞环组动力学模型,研究了干式缸套的失圆变形。在考虑缸套失圆变形的基础上,研究了活塞环结构参数对窜气量、机油消耗量和摩擦损失的影响,并通过正交设计方法进行了活塞环径向弹力、开口间隙和侧向间隙对窜气量、机油消耗和摩擦损失的影响研究。研究结果表明,活塞环结构参数中,二环径向弹力、二环开口间隙和顶环侧向间隙对窜气量的影响最大,油环径向弹力、二环开口间隙和顶环侧向间隙对机油消耗量的影响最大,油环径向弹力、油环开口间隙和油环侧向间隙对摩擦损失的影响最大。Taking a high-pressure common-rail diesel engine as the research object,a coupling assembly model of the engine and a dynamic model of piston-ring group were established and verified by test data.The outof-round deformation of the dry cylinder liner was studied by using the assembly simulation model.On the basis of considering the out-of-round deformation of the cylinder liners,the effects of piston ring structural parameters on blow-by,lubricant oil consumption,and friction loss were studied by employing orthogonal test method.The results show that,among the structural parameters of the piston,the radial elasticity of the second ring,the gap between the second ring,and the lateral clearance of the top ring have the greatest influences on the amount of blow-by.The radial elastic force of the oil ring,the gap between the second ring,and the lateral clearance of the top ring have the greatest influences on the oil consumption.The radial elasticity of the oil ring,the gap between the oil ring openings,and the side gap of the oil ring have the greatest influences on the friction loss.

关 键 词：缸套失圆变形 活塞环 机油耗 摩擦损失 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]