高原柴油机气缸套-活塞环磨损计算研究  

Numerical Calculation on Altiplano Engine Cylinder Liner-piston Ring Wear

作　　者：王宪成[1] 和穆[1] 张晶[1] 何星[1] 

机构地区：[1]装甲兵工程学院机械工程系,北京100072

出　　处：《润滑与密封》2011年第1期13-16,共4页Lubrication Engineering

基　　金：军内科研项目(GF2009WG01)

摘　　要：为了研究高原环境对柴油机寿命的影响,以某型柴油机为对象,通过模拟高原柴油机实际工作过程,结合活塞环受力分析和缸套传热计算得到边界条件,基于雷诺方程和改进的Holm-Achard黏着磨损公式建立气缸套-活塞环润滑磨损数值计算模型;经验证气缸套径向最大磨损深度的计算值与实测值误差不超过5%。计算表明,油膜厚度随外界大气压力降低而逐渐变薄;在海拔5000 m左右时气缸平均磨损值达到最大。In order to research the operating conditions effects on diesel life,a certain diesel through simulating the actually conditions of the altiplano diesel.The cylinder liner-piston ring boundary condition was established with dynamic and heat balance analysis.The lubrication and wear calculation mode was established based on mean Reynolds equation and Holm-Achard sticking wear mechanics.The results show that,the error of the calculated value of maximum radial wear depth of cylinder liner is lower than 5% compared with the measured value.The film thickness decreases with the gradually decrease of external atmospheric pressure.At an altitude of around 5 000 m,the average radial wear depth of cylinder attains the maximum.

关 键 词：高原 气缸套-活塞环 润滑 磨损 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]