| 摘要 |
<p>A lubricant composition for internal combustion engine oil, which is characterized by containing a boronated imide dispersant or by containing a boronated imide dispersant and a boronated imide-free dispersant, and which is also characterized in that: the boron content (B mass%) derived from the boronated imide dispersant in the composition and the nitrogen content (N mass%) derived from the boronated imide dispersant or the boronated imide dispersant and the boronated imide-free dispersant in the composition satisfy the following formula (I), N = B + 0.05 (I) ; and the phosphorus content (P mass%) and the metal content (M mass%) derived from a metal-based cleaning agent, each based on the total amount of the composition, satisfy one of the following conditions (A)-(C). (A) P < 0.03 and M < 0.05 (B) P < 0.03 and 0.05 = M = 0.12 (C) 0.03 = P = 0.06 and M < 0.05 The lubricant composition for internal combustion engine oil has an effect of greatly reducing the amount of ZnDTP or a metal-based cleaning agent, which contains a large amount of phosphorus content, while maintaining wear resistance against aluminum materials.</p> |
