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|1. (WO2015114920) LUBRICATING OIL COMPOSITION|
|Applicants:||EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
エクソンモービル リサーチ アンド エンジニアリング カンパニー
TOYOTA JIDOSHA KABUSHIKI KAISHA
|Title:||LUBRICATING OIL COMPOSITION|
[Problem] To provide a lubricating oil composition which can reduce the occurrence frequency of LSPI and which can ensure detergency. [Solution] The present invention is a lubricating oil composition which comprises a lubricant base oil, a compound having calcium and/or magnesium, a compound having molybdenum and/or phosphorus, and an ashless dispersant having nitrogen and which satisfies X ≤ -0.85 and Y ≥ 0.18 (wherein X is calculated according to formula (1): X=([Ca]+0.5[Mg])×8-[Mo] ×8-[P] ×30 and Y is calculated according to formula (2): Y=[Ca]+1.65[Mg]+[N]). The present invention is particularly a lubricating oil composition for use in an internal combustion engine, more particularly, a lubricating oil composition for use in a supercharged gasoline engine.