Title:
SYSTEM LUBRICATION OIL COMPOSITION FOR CROSSHEAD DIESEL ENGINE
Document Type and Number:
WIPO Patent Application WO/2014/057641
Kind Code:
A1
Abstract:
The present invention provides a system lubrication oil composition for a crosshead diesel engine, the composition having minimal formation of deposits even when a group II or III base oil is used, and having excellent high-temperature cleanness and coking resistance (heat resistance), the system lubrication oil composition for a crosshead diesel engine being characterized in being obtained by blending a metal cleaning agent (B) and zinc dithiophosphate(C) into a base oil (A) having a kinetic viscosity of 8.5-12.6 mm2/s at 100°C and containing tricyclic or higher aromatics in an amount of at least 1.05 mass%, the base oil (A) comprising a base oil (A-1) having a kinetic viscosity of 4.0-12.6 mm2/s at 100°C, and a base oil (A-2) having a kinetic viscosity of 16.3-60 mm2/s at 100°C and containing saturated hydrocarbons in an amount of less than 90 mass%, to achieve a base value of 4-20 mg KOH/g and a phosphorus content of 200-1000 mass ppm.
Inventors:
TAKESHIMA SHIGEKI (JP)
Application Number:
PCT/JP2013/005936
Publication Date:
April 17, 2014
Filing Date:
October 04, 2013
Export Citation:
Assignee:
JX NIPPON OIL & ENERGY CORP (JP)
International Classes:
C10M169/04; C10M101/02; C10M137/10; C10M159/22; C10N10/04; C10N20/00; C10N20/02; C10N30/00; C10N30/08; C10N40/25
Domestic Patent References:
| WO2006043606A1 | 2006-04-27 | |||
| WO2007102429A1 | 2007-09-13 |
Foreign References:
| JP2010519376A | 2010-06-03 | |||
| JP2011132341A | 2011-07-07 | |||
| JPH10287893A | 1998-10-27 | |||
| JP2007197700A | 2007-08-09 | |||
| JP2002047498A | 2002-02-12 |
Attorney, Agent or Firm:
SUGIMURA, KENJI (JP)
Kenji Sugimura (JP)
Kenji Sugimura (JP)
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