二烷基二硫代甲酸钼(MoDTC)摩擦改进剂对GF-3等级全配方发动机油摩擦学性能的影响  

Impacts of Molybdenum Dithiocarbamate (MoDTC) Friction Modifier on Tribological Performance of Fully Formulated GF-3 Engine Oil

作　　者：马亚军[1] 赵晚成[1] 李生华[1] 金元生[1] 王玉琮 Simon C Tung 

机构地区：[1]清华大学摩擦学国家重点实验室,北京100084 [2]通用汽车公司,美国底特律480909055

出　　处：《润滑与密封》2004年第4期55-57,65,共4页Lubrication Engineering

摘　　要：利用SRV高温摩擦磨损试验机研究了二烷基二硫代甲酸钼 (MoDTC)对渗氮活塞环 /铸铁缸套在ILSACGF 3发动机油润滑条件下的摩擦学性能的影响。结果表明 ,MoDTC能与GF 3全配方发动机油中的ZDTP/磺酸钙添加剂体系产生协同作用 ,在活塞环和缸套表面生成减摩和抗磨的摩擦反应膜 ,从而显著降低并在较长时间内保持低摩擦系数 (最低 0 0 3) ,同时缸套的磨损降低 5 0 %以上。The impacts of molybdenum dithiocarbamate (MoDTC) on the tribological performance of nitrided piston ring/cylinder bore,lubricated with the newest GF 3 category engine oil,were investigated with SRV high temperature tribotester.The results indicate MoDTC has synergistic effect with ZDTP/calcium sulfnate additives in full formulated GF 3 category engine oil to form friction decrease and anti wear tribofilm,and the friction coefficient is decreased(the lowest value reaches 0 03) and kept for a quite long time.The wear volume of cylinder bore sample is also reduced over 50%.

关 键 词：二烷基二硫代甲酸钼 MODTC 摩擦改进剂 发动机油 摩擦学性能 活塞环 缸套 润滑油 

分 类 号：TH117[机械工程—机械设计及理论]