低黏度润滑油对涡轮增压发动机影响的试验研究  

Experimental Study on the Influence of Low Viscosity Lubricating Oil on Turbocharged Engine

作　　者：莫易敏[1] 张偶 刘青春 吕俊成 罗旭[1] MO Yimin;ZHANG Ou;LIU Qingchun;LV Juncheng;LUO Xu(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan Hubei 430070,China;AIC-GM-Wuling Automobile Co.,Ltd.,Liuzhou Guangxi 540057,China)

机构地区：[1]武汉理工大学机电工程学院,湖北武汉430070 [2]上汽通用五菱汽车股份有限公司,广西柳州540057

出　　处：《润滑与密封》2022年第6期88-93,共6页Lubrication Engineering

摘　　要：为了探究低黏度润滑油对涡轮增压发动机的影响,选用3种低黏度测试油0W20和参比油5W30进行台架试验,包括发动机机械损失试验和发动机万有特性试验。其中测试油0W20-1和0W20-2中添加了不同量的含钼摩擦改进剂,测试油0W20-3中添加了脂肪酸酯摩擦改进剂,且测试油0W20-1的黏度最低。选用黏度最低的测试油0W20-1进行发动机耐久试验。结果表明:在节气门全开和节气门全关2种工况下,含钼摩擦改进剂含量较高的测试油0W20-2摩擦力矩最小,相比参比油5W30分别可以降低发动机机械摩擦损失34.4%和19.3%;发动机的机械摩擦损失与摩擦改进剂的种类和添加量有关,相比脂肪酸酯摩擦改进剂,含钼摩擦改进剂更适应涡轮增压发动机工况,减少摩擦功的效果更好;低黏度润滑油能够提高车辆的燃油经济性,并且发动机关键摩擦副磨损量较小,满足发动机耐久性要求。In order to explore the influence of low viscosity lubricating oil on turbocharged engine,three kinds of low viscosity test oil 0 W20 and reference oil 5 W30 were selected for bench tests,including engine mechanical loss test and engine universal characteristic test.Among them,different amounts of molybdenum friction modifier was added in the test oil 0 W20-1 and 0 W20-2,the fatty ester friction modifier was added in the test oil 0 W20-3,and the test oil 0 W20-1 had the lowest viscosity.The engine durability test was carried out by using the lowest viscosity test oil 0 W20-1.The results show that under the two working conditions of full open and full close throttle,the friction torque of test oil 0 W20-2 with high content of molybdenum friction modifier is the smallest.Compared with reference oil 5 W30,the mechanical friction loss of engine can be reduced by 34.4% and 19.3% respectively.The mechanical loss is related to the type and amount of friction modifier.Compared with fatty ester friction modifier,molybdenum containing friction modifier is more suitable for the condition of turbocharged engine and and has better effect of reducing friction work.Low viscosity oil can improve the fuel economy of vehicles,and the wear of key friction pairs of the engine is small,which can meet the requirements of engine durability.

关 键 词：发动机机油 涡轮增压 低黏度 燃油经济性 耐久性 

分 类 号：U473.6.212[机械工程—车辆工程] TE626.3[交通运输工程—载运工具运用工程]