润滑油老化对发动机摩擦特性的影响  

Influence Study of Oil Property Degradation on Engine Friction

作　　者：徐宏昌[1] 李冕[1] 周龙 XU Hongchang;LI Mian;ZHOU Long(National Engineering Laboratory for the Automotive Electronic Control Technology,Shanghai Jiao Tong University,Shanghai 200240,China;AVL LIST Technical Center,Shanghai 201206,China)

机构地区：[1]上海交通大学汽车电子控制技术国家工程实验室,上海200240 [2]AVL李斯特技术中心(上海)有限公司,上海201206

出　　处：《机械设计与研究》2018年第4期148-151,共4页Machine Design And Research

基　　金：国际科技合作项目面向中美清洁能源合作的电动汽车前沿技术研究(2010DFA72760-204);国家自然科学基金资助项目(51375302)

摘　　要：润滑油品质对发动机内相关零部件间的摩擦特性具有重要影响,其性能在发动机工作过程中会随着运行时间、环境温度等因素的变化而发生改变,进而影响到发动机系统整体的动力性能和经济性能。以某款1.5 L排量4缸汽油机为研究对象,在台架试验的测试数据基础上,建立发动机系统的多体动力学仿真模型,着重分析润滑油老化与发动机主要传动部件间摩擦特性变化的关系。研究结论有利于发动机动力传动机构的设计以及润滑油型号的匹配。The quality of lubricating oil has significant influence on the friction characteristics between connected automobile engine parts. Its performance can be very different due to the variation of operating conditions or environment temperature and thus can affect the system performance of power and economy of an engine. In this paper,a 1.5 L fourcylinder gasoline engine is used to conduct the analysis through engine bench tests first. Then a multi-body-dynamic model is built to analyze and understand the correlation between the friction characteristics of engine parts and the aging of lubricating oil. The result obtained from this study will benefit automotive engine design and matching different kinds of lubricating oils and engines.

关 键 词：车用发动机 多体动力学 摩擦功 润滑油老化 

分 类 号：TH117[机械工程—机械设计及理论]