A lubricating oil composition for internal combustion engine, comprising a lubricating base oil; (A) a triphosphate represented by formula (1) below in an amount of 0.01 to 0.2 percent by mass in terms of phosphorus: (B) succinimide and/or derivative thereof in an amount of 0.01 to 0.3 percent by mass in terms of nitrogen; (C) an alkali metal or alkaline earth metal detergent in an amount of 0.05 to 1 percent by mass in terms of metal; and (D) a phenol-based and/or amine-based anti-oxidants in an amount of 0.01 to 3 percent by mass:
O = P(OR1)3 (1)
wherein the groups of R1 are each independently a hydrocarbon group having 1 to 30 carbon atoms and are the same or different from each other. The lubricating oil composition is excellent in anti-wear properties, base number retaining properties, high temperature detergency, and low friction characteristics.
一种用于内燃机的润滑油组合物,包括润滑基础油;(A) 以下式(1)代表的
三磷酸酯,以
磷计,用量为 0.01 至 0.2%(质量百分比);(B) 琥珀
酰亚胺和/或其衍
生物,以氮计,用量为 0.(C) 碱
金属或碱土
金属洗涤剂,含量为 0.05%至 1%(以
金属质量计);以及 (D)
苯酚基和/或胺基
抗氧化剂,含量为 0.01%至 3%(以质量计):
o = p(or1)3 (1)
其中 R1 的基团各自独立地为具有 1 至 30 个碳原子的烃基,且彼此相同或不同。该润滑油组合物具有优异的抗磨损性能、基数保持性能、高温清净性和低摩擦特性。