Title:
LUBRICATING OIL COMPOSITION FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2023/054469
Kind Code:
A1
Abstract:
This lubricating oil composition for internal combustion engines contains: (A) a lubricant base oil having a kinematic viscosity at 100ºC of 2.0 mm2/s-5.0 mm2/s inclusive; (B) a molybdenum-based friction modifier at a quantity of 50-2000 ppm by mass inclusive in terms of quantity of molybdenum relative to the overall amount of the composition; (C) a nitrogen-containing ashless friction modifier; (D) succinimide or a derivative thereof as a dispersing agent; (E) an amine-based ashless antioxidant as an antioxidant; and (F) a metal-based cleaning agent at a quantity of 1000-2200 ppm by mass inclusive in terms of quantity of metal relative to the overall amount of the composition. The composition has a sulfuric acid ash content of 0.9 mass% or less and a nitrogen control index of 0.60 or less. Provided is a lubricating oil composition for internal combustion engines, which exhibits improved fuel economy and oxidation stability while maintaining a low sulfuric acid ash content.
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Inventors:
ERYU SHOGO (JP)
Application Number:
PCT/JP2022/036162
Publication Date:
April 06, 2023
Filing Date:
September 28, 2022
Export Citation:
Assignee:
ENEOS CORP (JP)
International Classes:
C10M169/04; C10M129/68; C10M133/06; C10M133/12; C10M133/20; C10M133/56; C10N10/12; C10N30/00; C10N30/08; C10N40/25
Domestic Patent References:
| WO2016158971A1 | 2016-10-06 | |||
| WO2015147270A1 | 2015-10-01 |
Foreign References:
| JP2008106199A | 2008-05-08 | |||
| JP2007254559A | 2007-10-04 | |||
| JP2017149830A | 2017-08-31 | |||
| JP2010047667A | 2010-03-04 | |||
| JP2008231189A | 2008-10-02 | |||
| JP2008231192A | 2008-10-02 | |||
| JP2009167278A | 2009-07-30 |
Attorney, Agent or Firm:
MOEGI PATENT ATTORNEYS (JP)
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