A lubricating oil comprising a major amount of base oil and a minor amount of an additive package comprising a friction modifier component selected from:
(A) one or more friction modifiers of the formulae I and II:
wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl group having 8 to 22 carbon atoms, R1 is a hydrocarbyl having from 1 to 8 carbon atoms or a C1-C8 hydrocarbyl group containing one or more heteroatoms and R2 and R3 are independently selected from hydrogen, C1-C18 hydrocarbyl groups, and C1-C18 hydrocarbyl groups containing one or more heteroatoms;
(B) two or more friction modifiers independently selected from the formulae III and IV:
wherein R is as defined above; and X is an alkali metal, alkaline earth metal or ammonium cation and n is the valence of cation X; and
(C) at least one friction modifier of the formulae III and IV in combination with at least one friction modifier of the formulae I and II.
一种润滑油,包括主要量的基础油和少量的复合添加剂,复合添加剂包括选自下列各项的摩擦改进剂组分
(A) 一种或多种式 I 和 II 的摩擦改进剂:
其中 R 是具有 8 至 22 个碳原子的线性或支链饱和、不饱和或部分饱和烃基,R1 是具有 1 至 8 个碳原子的烃基或含有一个或多个杂原子的 C1-C8 烃基,R2 和 R3 独立选自氢、C1-C18 烃基和含有一个或多个杂原子的 C1-C18 烃基;
(B) 两种或两种以上独立选自式 III 和 IV 的摩擦改进剂:
其中 R 如上定义;X 为碱
金属、碱土
金属或
铵阳离子,n 为阳离子 X 的价数;以及
(C) 式 III 和 IV 中的至少一种摩擦改进剂与式 I 和 II 中的至少一种摩擦改进剂的组合。