摘要
为了确保支撑部位润滑良好,往往需要在轴或轴承表面设计各种油槽,然而增加油槽会伴随着泄油量的增加,影响其他零部件的润滑。为探讨油槽结构对滑动轴承泄油量的影响,采用不同的油槽结构设计方案设计3种齿轮滑动轴承。将轴承的总泄油分为油槽泄油和间隙泄油两部分,分别采用CFD仿真计算油槽泄油量,采用一维仿真计算间隙泄油量。基于某款轻型柴油机润滑系统的仿真试验,验证了计算方法的有效性。结果表明:无油槽的滑动轴承总泄油量最少,仅增加轴向油槽,轴承的总泄油量略有增加,同时增加轴向和周向油槽,轴承的总泄油量显著增加。对于润滑油总流量较低的轻型发动机,应合理设计滑动轴承的油槽结构,避免因泄油过多导致的润滑油压力不足问题。
In order to ensure the good lubrication of the supporting parts,it is necessary to design various oil grooves on the shaft or bearing surface.However,increasing the oil grooves will increase the oil leakage and affect the lubrication of other parts.In order to discuss the influence of oil groove structure on the oil leakage of sliding bearing,three kinds of gear sliding bearings with different oil groove structures were proposed.The total leakage of the bearing was divided into two parts,the leakage from the oil groove and the leakage from the clearance,and the leakage from the oil groove was calculated by CFD simulation,the leakage from the clearance was calculated by one-dimensional simulation.Based on the simulation test of a light diesel engine lubrication system,the validity of the calculation method was verified.The results show that the total oil leakage is the least for the sliding bearing without oil groove,that is slightly increased for the sliding bearing with axial oil groove,and that is significantly increased for the sliding bearing with axial and circumferential oil grooves.For light duty engines with low total oil flow rate,the oil groove structure of sliding bearings should be designed reasonably to avoid insufficient oil pressure caused by excessive oil leakage.
作者
李超
董朵
马庆镇
李渴忻
徐菁菁
LI Chao;DONG Duo;MA Qingzhen;LI Kexin;XU Jingjing(State Key Laboratory of Engine Reliability,Weichai Power Co.,Ltd.,Weifang Shandong 261061,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2023年第4期192-197,共6页
Lubrication Engineering
关键词
滑动轴承
油槽
泄油量
润滑油压力
sliding bearing
oil groove
oil leakage
oil pressure
作者简介
李超(1987-),男,工学硕士,高级工程师,研究方向为内燃机设计。E-mail:lichao01@weichai.com。
