Title:
Internal-combustion-engine-oil constituent
Document Type and Number:
Japanese Patent JP6097296
Kind Code:
B2
Abstract:
A lubricating oil composition of the present invention for an internal combustion engine is prepared by blending (A) a perbasic calcium sulfonate and/or a perbasic calcium phenate having a TBN of 200 mgKOH/g or higher, (B) predetermined binuclear and/or trinuclear organic molybdenum compounds, and (C) a polyalkyl (meth) acrylate having an SSI of 30 or lower into a lubricating base oil composed of a mineral oil and/or a synthetic oil, in which the total content of molybdenum derived from the binuclear and trinuclear organic molybdenum compounds is 0.025% by mass or higher based on the total amount of the composition, and in which the lubricating oil composition has a high-temperature high-shear viscosity at 100°C of 4.0 to 5.0 mPa·s, a high-temperature high-shear viscosity at 150°C of 2.5 mPa·s or lower and a NOACK value (250°C, 1 hr) of 15% by mass or less.
Inventors:
Toshimasa Utaka
Hideki Kamano
Hideki Kamano
Application Number:
JP2014528182A
Publication Date:
March 15, 2017
Filing Date:
July 30, 2013
Export Citation:
Assignee:
IDEMITSU KOSAN CO.,LTD.
International Classes:
C10M167/00
Domestic Patent References:
| JP2011140573A | ||||
| JP2008303344A | ||||
| JP2008184569A | ||||
| JP2008248139A | ||||
| JP2008239774A | ||||
| JP2012036344A | ||||
| JP2009292998A | ||||
| JP2289688A | ||||
| JP2004043781A | ||||
| JP2010280820A | ||||
| JP2003221589A |
Attorney, Agent or Firm:
Tamotsu Otani
Yoshio Takizawa
Yoshio Takizawa