基于联合仿真的柴油机缸套-活塞环磨损计算分析
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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 insurance 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,followed by next the lower stop point,while the wear depth in the middle is smaller.The wear distribution along the circumferential 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.
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 insurance 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,followed by next the lower stop point,while the wear depth in the middle is smaller.The wear distribution along the circumferential 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.
引文
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【2】 杨晓京.固体颗粒杂质影响活塞环一缸套润滑、磨损的理论及试验装备研究[D].杭州:浙江大学,2008:51-54.
【3】 何星,王宪成,李奇,等.车辆柴油机缸套-活塞环动载荷磨损分析与计算[J].润滑与密封,2014,39(2):27-31.HE X,WANG X C,LI Q,et al.Dynamic load wear analysis and calculation of heavy vehicle diesel engine cylinder-piston ring[J].Lubrication Engineering,2014,39(2):27-31.
【4】 Gamma Technologies,LLC.A GT-SuiteTM application for fuel injection and general hydraulic system simulation[M].Pune:Gamma Technologies,LLC,2004.
【5】 周松,王银燕,朗平剑,等.内燃机工作过程仿真技术[M].北京:北京航空航天大学出版社,2012:95-99.
【6】 HAN D C,LEE J S.Analysis of the piston ring lubrication with a new boundary condition[J].Tribology International,1998,31(12):753-760.
【7】 瞿志俊,朱文亮,陆广华,等.基于虚拟仪器技术的活塞环摩擦磨损试验机的研制[J].机床与液压,2017,45(4):10-13.QU Z J,ZHU W L,LU G H,et al.Development of tester for friction and wear studies of piston ring based on virtual instrument technology[J].Machine Tool & Hydraulics,2017,45(4):10-13.
【8】 何星,毛杰键,上官元硕,等.多缸柴油机缸套-活塞环磨损不均匀性计算分析[J].润滑与密封,2019,44(2):109-113.HE X,MAO J J,SHANGGUAN Y S,et al.Calculation and analysis of cylinder liner and piston ring wear inhomogeneity for multi cylinder diesel engine[J].Lubrication Engineering,2019,44(2):109-113.
【9】 王宪成,杨绍卿,马宁,等.车辆柴油机缸套动载荷磨损计算模型研究[J].兵工学报,2017,38(9):1673-1680.WANG X C,YANG S Q,MA N,et al.Research on wear model for cylinder liners in vehicle diesel engine under dynamic load[J].Acta Armamentarii,2017,38(9):1673-1680.
【10】 王宪成,张根良,和穆,等.车用柴油机技术状态数据实时采集系统设计[J].车用发动机,2011(4):23-26.WANG X C,ZHANG G L,HE M,et al.Design of state data real-time acquisition system for vehicle diesel engine[J].Vehicle Engine,2011(4):23-26.DOI:10.3969/j.issn.0254-0150.2019.05.020文献引用:陈炼,李双喜,李欢,等.油气两相回流泵送密封的端面温度分布分析及试验验证[J].润滑与密封,2019,44(5):122-128.Cite as:CHEN Lian,LI Shuangxi,LI Huan,et al.Analysis and experiment verification on end-face temperature distribution of oil-gas two-phase backflow pumping seal[J].Lubrication Engineering,2019,44(5):122-128.