东南大学学报（英文版）2021，Vol.37Issue(2)：119-127,9.DOI:10.3969/j.issn.1003-7985.2021.02.001
曲轴销轴承转速和尺寸对提高发动机功率的影响
Effects of crankpin bearing speed and dimension on engine power
摘要
Abstract
A new method combining the slider-crank mechanism dynamic (SCM) and crankpin bearing (CB)lubrication models is proposed to analyze the effects of CB dimensions and engine speed on the lubrication efficiency and friction power loss (LE-FPL) of an engine.The dynamic and lubrication equations are then solved on the basis of the combined model via an algorithm developed in MATLAB.To enhance the reliability of the research results,the experimental data of combustion gas pressure is applied for simulation.The load bearing capacity (or oil film pressure),friction force,friction coefficient,and eccentricity ratio of the CB are selected as objective functions to evaluate the LE-FPL.The effects of engine speed,bearing width,and bearing radius on the LE-FPL are then evaluated.Results show that reductions in engine speed,bearing width,or bearing radius can decrease the FPL but reduce the LE of the engine and vice versa.In particular,the LE-FPL can effectively be improved by slightly reducing the bearing width and bearing radius or maintaining engine speed at 2000 r/min.关键词
曲柄滑块机构/曲柄销轴承/润滑性能/摩擦损失Key words
slider-crank mechanism/crankpin bearing/lubrication performance/friction loss分类
交通工程引用本文复制引用
阮文廉,张建润,焦仁强,黄大成..曲轴销轴承转速和尺寸对提高发动机功率的影响[J].东南大学学报（英文版）,2021,37(2):119-127,9.基金项目
The National Key Research and Development Plan(No.2019YFB2006402),the Key Project of Scientific Research Plan of Hubei Polytechnic University(No.21xjz02A),the Open Fund Project of Hubei Key Laboratory of Intelligent Transportation Technology and Device,Hubei Polytechnic University (No.2020XY105,2020XZ107). （No.2019YFB2006402）
