Title:
Lubricating oil composition
Document Type and Number:
Japanese Patent JP6259511
Kind Code:
B2
Abstract:
A lubricating oil composition for a metal belt-type continuously variable transmission with a high metal-to-metal friction coefficient and excellent anti-fatigue and anti-seizure properties is provided. The composition contains a lubricating base oil and (A) a high overbased alkaline earth metal sulfonate having a base number of 300 to 500 mgKOH/g in an amount of 0.01 to 0.03 percent by mass as alkaline earth metal, (B) a low overbased alkaline earth metal sulfonate with a base number of 0 to 40 mgKOH/g in an amount of 0.005 to 0.015 percent by mass as alkaline earth metal, and (C) a sulfur-containing phosphite ester in an amount of 0.02 to 0.06 percent by mass as phosphorus. The ratio ([M]/[P]) of the content of (B) as alkaline earth metal ([M]) to the content of (C) as phosphorus ([P]) is 0.15 or greater.
Inventors:
Yoshitaka Manabe
Application Number:
JP2016508444A
Publication Date:
January 10, 2018
Filing Date:
September 02, 2014
Export Citation:
Assignee:
jxtg energy corporation
International Classes:
C10M163/00
Domestic Patent References:
| JP2010513695A | ||||
| JP2001288488A | ||||
| JP2014098063A | ||||
| JP2001342485A |
Attorney, Agent or Firm:
Junyuki Morita
Hiroyuki Morita
Hiroyuki Morita