公开(公告)号：US20170121626A1

公开(公告)日：2017-05-04

申请号：US15318559

申请日：2016-03-29

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Ikuko NAKAYA ,  Kazushi TAMURA

IPC分类号： C10M139/00 ,  C10M141/08 ,  C10M129/76

CPC分类号： C10M139/00 ,  C10M129/76 ,  C10M141/08 ,  C10M141/12 ,  C10M2203/1025 ,  C10M2205/0285 ,  C10M2207/026 ,  C10M2207/28 ,  C10M2207/283 ,  C10M2207/289 ,  C10M2209/084 ,  C10M2215/02 ,  C10M2215/042 ,  C10M2215/064 ,  C10M2215/28 ,  C10M2219/068 ,  C10M2223/045 ,  C10M2227/00 ,  C10M2227/066 ,  C10N2210/02 ,  C10N2210/06 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/54 ,  C10N2230/68 ,  C10N2240/10 ,  C10N2260/14 ,  C10N2220/022

摘要： A lubricating oil composition which exhibits an excellent friction-reducing effect and excellent fuel consumption reducing properties is provided.The lubricating oil composition includes a lubricating base oil (A), a molybdenum compound (B), and an ashless friction modifier (C), wherein the lubricating oil composition includes a binuclear organic molybdenum compound represented by the following general formula (I) as the molybdenum compound (B), with the content of the binuclear organic molybdenum compound as converted into molybdenum atoms being 0.030 mass % or more and 0.140 mass % or less based on the total amount of the lubricating oil composition; and an ester-based ashless friction modifier (C1) and/or an amine-based ashless friction modifier (C2) as the ashless friction modifier (C), with the total content of the ester-based ashless friction modifier (C1) and the amine-based ashless friction modifier (C2) being more than 0.1 mass % and 1.8 mass % or less based on the total amount of the lubricating oil composition: in the general formula (I), R1 to R4 each represents a hydrocarbon group having 4 to 22 carbon atoms, R1 to R4 may be the same as or different from each other, and X1 to X4 each represents a sulfur atom or an oxygen atom.

公开(公告)号：US20180044609A1

公开(公告)日：2018-02-15

申请号：US15559579

申请日：2016-03-09

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Ikuko NAKAYA ,  Yoriyuki TAKASHIMA

IPC分类号： C10M169/04 ,  C10M145/14 ,  C10M139/00 ,  C10M133/54

CPC分类号： C10M169/044 ,  C10M133/08 ,  C10M133/54 ,  C10M139/00 ,  C10M141/12 ,  C10M145/14 ,  C10M145/38 ,  C10M2203/1025 ,  C10M2207/026 ,  C10M2207/262 ,  C10M2209/084 ,  C10M2209/109 ,  C10M2215/042 ,  C10M2215/086 ,  C10M2215/28 ,  C10M2223/045 ,  C10N2210/02 ,  C10N2220/021 ,  C10N2230/02 ,  C10N2230/04 ,  C10N2230/06 ,  C10N2230/45 ,  C10N2230/54 ,  C10N2240/104 ,  C10N2260/14 ,  C10N2220/022

摘要： Provided is a lubricating oil composition for internal combustion engines capable of exhibit a sufficient friction-reducing effect from a low-temperature range assuming engine starting to a practical temperature range of 80° C. or higher. The lubricating oil composition for internal combustion engines contains a surfactant having an alkylene oxide as the constituent unit and having an HLB value of 7 or more and less than 15, and a lubricant base oil.

公开(公告)号：US20190106648A1

公开(公告)日：2019-04-11

申请号：US16088526

申请日：2017-03-30

申请人： IDEMITSU KOSAN CO., LTD.

发明人： Tatsuya KUSUMOTO ,  Ikuko NAKAYA

IPC分类号： C10M141/10 ,  C10M169/04 ,  C10M137/10 ,  C10M129/54 ,  C10M135/10 ,  C10M135/18

摘要： The present in relates to a lubricating oil composition for sliding member having a coating film, the lubricating oil composition containing a base oil; (A) a zinc dialkyldithiophosphate; and (B) a metallic detergent, wherein the content of sulfur atom (S) is 2,800 ppm by mass or less on the basis of the whole amount of the lubricating oil composition, and a mass ratio of the content of sulfur atom (S) and the content of metal atom (BM) derived from the component (B) [(S)/(BM)] in the lubricating oil composition is 0.07 or more and 2.90 or less.