卧式柴油机主轴润滑特性及参数影响分析  

AN INVESTIGATION OF LUBRICATION CHARACTERISTICS AND PARAMETERS INFLUENCE ON MAIN BEARING IN HORIZONTAL DIESEL ENGINE

作　　者：贾德文[1] 白建勇[1] 毕玉华[1] 张建刚[1] 邓伟 马新华 

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]云南西仪工业股份有限公司,昆明650114

出　　处：《机械强度》2016年第4期793-798,共6页Journal of Mechanical Strength

基　　金：云南省应用基础研究重点资金项目(2014FA026)资助~~

摘　　要：针对卧式两缸柴油机,在AVL Excite pu软件中建立其主轴承弹性动力润滑仿真模型,在考虑主轴瓦及轴颈粗糙度因素下,分析了在最大扭矩工况条件下(1 600 r/min)主轴承的润滑特性并对主轴承结构参数进行了优化。研究结果表明:各主轴承最小油膜厚度,最大油膜压力符合设计限值;第二主轴承最大油膜压力接近150 MPa的车用柴油机油膜压力极限值,其轴心轨迹有明显偏向运动,表明该轴承存在明显的轴承弯矩;以轴承弯矩为分析目标,采用试验设计方法得到对轴承弯矩影响的主轴承结构参数顺序为主轴承宽度、轴承间隙、油槽宽度、进油口位置。Based on the horizontal two-cylinder diesel engine,the main bearing elastohydrodynamic lubrication model was constructed in AVL EXCITE PU software,some results were acquired at the maximum torque working condition（ 1600 r / min）under the consideration of the roughness of bearing bush and journal. The results showed that three main bearings＇ minimum film thickness and maximum film pressure satisfy the design criterion. The 2nd main bearing ＇s maximum film pressure is about150 MPa which is the oil pressure limits. The 2nd main bearing orbit was obvious centripetal movement,which showed that the2 nd main bearing had obvious bending moment. The bending moment was considered to analysis object,and the parameters influence to bending moment is width of main bearing,bearing clearance,oil groove width and oil port position with the orthogonal experimental design.

关 键 词：内燃机 卧式柴油机 主轴承 弹性动力润滑 影响关系 

分 类 号：TH117.2[机械工程—机械设计及理论]