船用柴油机主轴承盖对轴承油膜润滑的影响研究

基于AVL Excite PU软件,采用弹性流体动力学耦合有限元法对某20V船用柴油机主轴承油膜进行了仿真分析。研究了不同材料、不同结构的主轴承盖对油膜润滑工作状态的影响。结果表明:同样结构的主轴承盖,采用铁材料比钢材料对轴承润滑更加有利;主轴承盖承压面两侧挖槽,在保证刚度的前提下,可以有效降低主轴承边缘压力峰值和平均热载峰值。

Research on the Effects of Main Bearing Caps on Bearing Oil Film Lubrication

Based on AVL Excite PU software, the main bearing oil film of a 20V marine diesel engine was analyzed using elastic hydrodynamics coupling with FEA method. How the different materials and different structures of main bearing caps worked on the working performance of oil film lubrication was studied.The results indicated that the main bearing caps with the same structure could get better lubrication performance using iron as the material than using steel; slotting the pressure surface of the main bearing could effectively reduce edge pressure peak and average thermal load and keep the stiffness level unchanged.