公开(公告)号：US20190002793A1

公开(公告)日：2019-01-03

申请号：US16064520

申请日：2016-12-22

Applicant: SHELL OIL COMPANY

Inventor： Kenji OOHARA ,  Kiyoshi HANYUDA ,  Kumiko KAMATA ,  Izumi KOBAYASHI

IPC: C10M169/04 ,  C10M107/24 ,  C10M135/20 ,  C10M171/04

Abstract: To provide a lubricating oil composition for internal combustion engines, which can realize low friction in both internal combustion engines equipped with a DLC and internal combustion engines not equipped with a DLC. [Solution] a lubricating oil composition for internal combustion engines, which is characterized in that the lubricating oil composition for internal combustion engines is a composition obtained by blending a molybdenum dithiocarbamate (MoDTC) and a polyalkylene glycol (PAG) in a base oil, the weight average molecular weight of the polyalkylene glycol is 2750-4500 and the content of the polyalkylene glycol is not less than 0.05 mass % and less than 10 mass % relative to the total mass of the composition.

公开(公告)号：US20180258362A1

公开(公告)日：2018-09-13

申请号：US15759730

申请日：2016-09-15

Applicant: SHELL OIL COMPANY

Inventor： Kenji OOHARA ,  Izumi KOBAYASHI ,  Kiyoshi HANYUDA

IPC: C10M103/02 ,  C10M129/16

CPC classification number: C10M103/02 ,  C10M129/16 ,  C10M169/04 ,  C10M2201/0413 ,  C10M2207/00 ,  C10M2207/021 ,  C10M2207/04 ,  C10M2207/08 ,  C10M2207/28 ,  C10M2209/103 ,  C10M2209/1033 ,  C10N2230/06 ,  C10N2280/00

Abstract: The present invention provides a low-friction sliding mechanism comprising a lubricant composition on a sliding plane between a DLC-coated sliding member (A) and a sliding member (B), wherein the DLC-coated sliding member (A) is formed by coating a base material with diamond-like-carbon containing 10 atom % or less of hydrogen, the sliding member (B) includes at least one kind of material selected from the group consisting of a metal material, a non-metal material, and a metal or non-metal coated material having a surface coated with a thin film, and the lubricant composition contains a basic oil (C), PAG (D), and an acid oxygen-containing organic compound (E) with an acid number of more than 1 mgKOH/g.