Title:
LUBRICANT COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2013/125106
Kind Code:
A1
Abstract:
Provided is a lubricant composition with which kinematic viscosity at 40°C, kinematic viscosity at 100°C and HTHS viscosity at 100°C can be kept sufficiently low for a low viscosity lubricant composition which has an HTHS viscosity at 150°C of less than 2.6 mPa∙s, with which increase in friction coefficient of a boundary lubrication region can be sufficiently suppressed, and which has excellent fuel efficiency. This lubricant composition is characterized by comprising a lubricant base oil with a kinematic viscosity at 100°C of 1 to 5 mm2/s, (A) a viscosity index improver with a weight average molecular weight (Mw) of 400,000 or less and a PSSI of 20 or less, (B) an overbased metal detergent with a metal ratio of 3.4 or less, and (C) a friction modifier, and having an HTHS viscosity at 150°C of less than 2.6 mPa∙s.
Inventors:
MATSUI SHIGEKI (JP)
YAGUCHI AKIRA (JP)
YAGUCHI AKIRA (JP)
Application Number:
PCT/JP2012/079079
Publication Date:
August 29, 2013
Filing Date:
November 09, 2012
Export Citation:
Assignee:
JX NIPPON OIL & ENERGY CORP (JP)
International Classes:
C10M169/04; C10M135/18; C10M143/02; C10M143/10; C10M143/12; C10M145/14; C10M159/22; C10N10/04; C10N10/12; C10N20/02; C10N20/04; C10N30/06; C10N40/25
Foreign References:
| JP2011140573A | 2011-07-21 | |||
| JP2008120908A | 2008-05-29 | |||
| JP2011140572A | 2011-07-21 | |||
| JP2010280824A | 2010-12-16 | |||
| JP2010031082A | 2010-02-12 |
Attorney, Agent or Firm:
MORITA, NOBUYUKI (JP)
Yoriyuki Morita (JP)
Yoriyuki Morita (JP)
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Claims: