活塞销偏置对润滑油消耗的影响  

Effect of Piston Pin Offset on Lubricating Oil Consumption

作　　者：刘雨东 赵俊生[1] 孙楠楠 杨志浩 傅新月 许泰 LIU Yudong;ZHAO Junsheng;SUN Nannan;YANG Zhihao;FU Xinyue;XU Tai(College of Mechanical Engineering,North University of China,Taiyuan Shanxi 030051,China;Weichai Power Co.,Ltd.,State Key Laboratory of Internal Combustion Engine Reliability,Weifang Shandong 261061,China)

机构地区：[1]中北大学机械工程学院,山西太原030051 [2]潍柴动力股份有限公司,内燃机可靠性国家重点实验室,山东潍坊261061

出　　处：《润滑与密封》2022年第4期132-138,共7页Lubrication Engineering

基　　金：内燃机可靠性国家重点实验室开放基金项目(SKLE R-201903)。

摘　　要：基于润滑油消耗机制,以某型12v柴油机为研究对象,建立活塞组件动力学仿真模型,分析活塞销偏置方式和活塞销偏置量对于润滑油消耗的影响。结果表明:活塞销偏置方式总体趋势是使润滑油的消耗减少,窜油和甩油得到明显改善,其中活塞销偏副推力侧(Anti-Thrust Side, ATS)对润滑油的消耗减少的效果最好;活塞销偏置量对润滑油的消耗有较大的影响,当偏置量增加时,窜油量先减小后增大,甩油量不断减小,其中活塞销偏ATS 3 mm时对减少润滑油消耗的综合效果最好;随着柴油机转速的增加,润滑油消耗量呈现不断增长的趋势,导致发动机效率降低。Based on the mechanism of lubricating oil consumption, taking a 12 v diesel engine as the research object, the dynamic simulation model of piston assembly was established, and the influence of piston pin offset mode and amount on lubricating oil consumption was analyzed.The results show that the offset mode of piston pin generally leads to the decrease of lubricating oil consumption, improves the oil channeling and oil throwing obviously, and the piston pin offset to anti-thrust side(ATS)has the best effect on reducing the consumption of lubricating oil.The offset of piston pin has a great influence on the consumption of lubricating oil.When the offset increases, the oil channeling first decreases and then increases, and the oil throwing decreases continuously.When the piston pin deviates 3 mm to ATS,the best comprehensive effect on reducing lubricating oil consumption is obtained.With the increase of diesel engine speed, the consumption of lubricating oil shows a growing trend, resulting in the reduction of engine efficiency.

关 键 词：柴油机 活塞销 润滑油消耗 偏置 

分 类 号：TH117.2[机械工程—机械设计及理论]