Title:
LUBRICATING OIL COMPOSITION, INTERNAL COMBUSTION ENGINE, AND LUBRICATION METHOD FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/031404
Kind Code:
A1
Abstract:
A lubricating oil composition that includes: a base oil (A) that includes an olefin polymer (A1) that has a prescribed kinematic viscosity, flash point, and pour point, the area of the peak from a decene trimer hydride (A11) being at least 80% of the total area of the peaks detected for the olefin polymer (A1) in a chromatogram; a viscosity index improver (B) that includes a comb polymer (B1); and an organic molybdenum compound (C). The lubricating oil composition is prepared such that the comb polymer (B1) content is within a specific range. The HTHS viscosity and the NOACK value of the lubricating oil composition at 50°C and 150°C are within a prescribed range.
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Inventors:
OKI HIROSHI (JP)
Application Number:
PCT/JP2018/029205
Publication Date:
February 14, 2019
Filing Date:
August 03, 2018
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M169/04; C10M107/10; C10M145/14; C10N10/12; C10N20/00; C10N20/02; C10N20/04; C10N30/06; C10N40/25
Domestic Patent References:
| WO2016043334A1 | 2016-03-24 | |||
| WO2016159006A1 | 2016-10-06 | |||
| WO2016203310A1 | 2016-12-22 |
Foreign References:
| JP2013536293A | 2013-09-19 | |||
| JP2012057175A | 2012-03-22 | |||
| JP2007137952A | 2007-06-07 | |||
| JP2005344017A | 2005-12-15 | |||
| US20130109604A1 | 2013-05-02 | |||
| JP2017115100A | 2017-06-29 | |||
| JP2013159734A | 2013-08-19 |
Other References:
See also references of EP 3666862A4
Attorney, Agent or Firm:
HIRASAWA, Kenichi et al. (JP)
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