| 柴油机曲轴主轴承润滑性能分析 |
| |
| 引用本文： | 赵波,戴旭东,吴仕昊.柴油机曲轴主轴承润滑性能分析[J].润滑与密封,2011,36(11). |
| |
| 作者姓名： | 赵波 戴旭东 吴仕昊 |
| |
| 作者单位： | 上海交通大学机械与动力工程学院 上海200240 |
| |
| 基金项目： | 国家自然科学基金项目(5070505550935004) |
| |
| 摘 要： | 基于弹性流体动力润滑(EHD)和轴承动力学理论,计及轴瓦、轴颈的粗糙度及曲轴和轴承座变形的影响,建立四缸内燃机主轴承的润滑分析模型。在此模型的基础上,分析轴承间隙、供油压力和轴承宽度等参数对内燃机主轴承润滑性能的影响。结果表明:第4轴承的最小油膜厚度较小,最大油膜压力较大,摩擦功耗最大,即具有较差的摩擦性能;为减少摩擦功耗,应在保证可靠的润滑性能的前提下,适当地增大轴承间隙、减小供油压力和减小轴承宽度。对第4主轴承进行优化分析,优化后的最小油膜厚度增大,最大油膜压力减小,摩擦功耗有所降低。
|
| 关 键 词： | 主轴承 弹性流体动力润滑 摩擦功耗 润滑性能 |
The Analysis of Lubrication Properties of Crankshaft Main Bearing on Diesel Engine |
| |
| Zhao Bo,Dai Xudong,Wu Shihao.The Analysis of Lubrication Properties of Crankshaft Main Bearing on Diesel Engine[J].Lubrication Engineering,2011,36(11). |
| |
| Authors: | Zhao Bo Dai Xudong Wu Shihao |
| |
| Affiliation: | Zhao Bo Dai Xudong Wu Shihao(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China) |
| |
| Abstract: | Based on elastohydrodynamic lubrication(EHD)and bearing dynamic theory,taking the roughness of bearing and journal,as well as the distortion of crankshaft and bearing blocks into account,the lubrication simulation model of a quadruple engine main bearing was established,and the effect of different radial clearance,oil supply pressure and bearing width was studied for the purpose of reducing the friction consumption.The results show that the forth main bearing has smaller minimum oil film thickness,larger ma... |
| |
| Keywords: | main bearing elastohydrodynamic lubrication friction consumption lubrication properties |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
