使用时间对汽油发动机润滑油性能的影响  

Effects of Service Time on Properties of Gasoline Engine Oil

作　　者：魏雷[1] 刘建芳[1,2] 金永亮 贾丹[1] 李健[1] 

机构地区：[1]武汉材料保护研究所,特种表面保护材料及应用技术国家重点实验室,湖北武汉430030 [2]武汉轻工大学生物与制药工程学院,湖北武汉430023

出　　处：《润滑与密封》2017年第9期1-5,46,共6页Lubrication Engineering

基　　金：国家自然科学基金项目(51575402)

摘　　要：针对汽车制造商推荐的民用轿车发动机润滑油换油时间是否科学的问题,以4台民用轿车为对象,进行5组352天以上的行车试验,跟踪采集并检测试验过程中发动机润滑油成分及理化性能变化,研究典型城市运行工况下长期服役的润滑油性能及成分变化规律,在实车试验的基础上探讨推荐换油时间的合理性。结果表明,5组试验中所采用的矿物、半合成及全合成润滑油在达到推荐换油时间(180天)时,润滑油总酸值、运动黏度远未达到现行标准中规定换油值;试验分别进行448、506、387、538及352天后,试验用润滑油总酸值、运动黏度依然未达到现行换油标准,并且保持着较好的氧化安定性及清净分散性能。As the problem of whether the engine oil drain time recommended by vehicle manufacturer is scientific is unknown ,4 civilian cars were used to take 5 groups of road tests, and every road test experienced more than 352 days.The oil samples during experimental process were tracked and collected to test the component and physicochemical properties change.The characteristics of the component and physicochemical properties of the engine oil under typical urban operating conditions were studied ,and the reasonability of the recommended oil drain time was discussed based on experiments.The results show that when reaching the recommended oil change time （ 180 days） ,the total acid number and kinematic viscosity of the test mineral oil, semisynthetic oil and synthetic oil are far from the current oil drain standard.The total acid number and kinematic viscosity do not reach the oil drain standard after the experiments for 448,506,387,538 and 352 days respectively, and the experimental oils also retain good oxidation stability, detergency and dispersancy.

关 键 词：长期服役 发动机油 换油时间 

分 类 号：TE626.32[石油与天然气工程—油气加工工程]