US2019002793A1PendingUtilityA1

Lubricating oil composition for internal combustion engines

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Assignee: SHELL OIL COPriority: Dec 24, 2015Filed: Dec 22, 2016Published: Jan 3, 2019
Est. expiryDec 24, 2035(~9.4 yrs left)· nominal 20-yr term from priority
Inventors:Kenji OoharaKiyoshi HanyudaKumiko KamataIzumi Kobayashi
C10M 161/00C10M 2219/068C10M 2209/104C10M 2209/105C10N 2030/06C10M 2209/103C10N 2040/25C10M 2209/084C10N 2080/00C10M 2209/107C10M 2205/173C10N 2020/04C10M 2223/045C10M 2203/1025C10M 135/20C10M 169/04C10M 2219/08C10M 2209/043C10M 171/04C10M 107/24C10N 2240/10C10N 2220/021C10M 107/46
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Claims

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.

Claims

exact text as granted — not AI-modified
1 . 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. 
     
     
         2 . The lubricating oil composition for internal combustion engines according to  claim 1 , which can be used in both internal combustion engines equipped with a DLC and internal combustion engines not equipped with a DLC. 
     
     
         3 . The lubricating oil composition for internal combustion engines according to  claim 1 , wherein the polyalkylene glycol is polypropylene glycol (PPG).

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