基于联合仿真的柴油机缸套-活塞环磨损计算分析  

Calculation and Analysis of Diesel Engine Cylinder Liner Piston Ring Wear Based on Joint Simulation

作　　者：何星 毛杰键[1,2] 周梓发 俞增清[1] HE Xing;MAO Jiejian;ZHOU Zifa;YU Zengqing(School of Physics & Electronics Information,Shangrao Normal University,Shangrao Jiangxi 334001,China;JiangxiProvince Engineering Research Center of Electric Vehicle Component Intelligent,Shangrao Jiangxi 334001,China)

机构地区：[1]上饶师范学院物理与电子信息学院,江西上饶334001 [2]江西省电动汽车部件智能化工程研究中心,江西上饶334001

出　　处：《润滑与密封》2019年第5期116-121,共6页Lubrication Engineering

基　　金：江西省教育厅科技项目(GJJ170943);国家自然科学基金项目(11365017;11465015)

摘　　要：为研究柴油机实际工作环境与使用工况对缸套-活塞环磨损影响规律,从某12150型柴油机及其辅助系统实际工作状况出发,建立缸套-活塞环磨损热力学、动力学边界条件仿真模型和动载荷磨损计算模型,开发柴油机工况车载检测系统;采用联合仿真方法建立面向使用工况的柴油机缸套-活塞环磨损计算流程,计算分析缸套磨损分布状况,并以柴油机400 h保险期实验数据进行检验。结果表明:缸套表面磨损状况呈现不均匀分布且差异显著,其分布沿缸套轴向呈锥体形,且上止点附近磨损深度最大,其次为下止点附近,而中部磨损较小;磨损分布沿缸套圆周方向则近似呈椭圆形,其主、侧推力面磨损深度最大;缸套径向最大磨损深度计算值为47.9μm,位于上止点曲柄转角9°处,实测均值为50.3μm,计算误差为4.77%,验证了计算模型的正确性;其中第一道活塞环(梯形环)对缸套的磨损作用最大,第二道环次之,第三环作用最小。In order to study the influence of actual working environment and working condition of diesel engine on wear of cylinder liner piston ring,a thermodynamic and dynamic boundary condition simulation model and a dynamic load wear model for cylinder liner piston ring wear were established based on the actual working condition of a 12150 type diesel engine and its auxiliary system.A vehicle detection system was developed for diesel engine working condition.The wear and tear calculation process of diesel engine cylinder liner piston ring was established based on the joint simulation method.The wear distribution of cylinder liner was calculated and analyzed,and the experimental data of diesel engine of 400 h insur ance period were tested.The results show that the distribution of surface wear of cylinder liner is uneven and has significant difference.The wear distribution is conical along the cylinder sleeve,and the wear depth near the top stop is the largest,fol lowed by next the lower stop point,while the wear depth in the middle is smaller.The wear distribution along the circumfer ential direction of the cylinder liner is approximately elliptical,and the maximum wear depth is on the main and lateral thrust surfaces.The calculated maximum radial wear depth of cylinder liner is 47 9 μm,which is located at the crank angle 9° of the top stop.The actual measurement value of the maximum radial wear depth is 50 3 μm and the calculation error is 4 77%,the correctness of the calculation model is verified.The first piston ring (trapezoidal ring) has the largest wear effect on the cylinder liner,followed by the second ring,and the effect of the third ring is the smallest.

关 键 词：柴油机 缸套-活塞环 磨损计算 联合仿真 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程] TH117.1[机械工程—机械设计及理论]