Title:
船舶用エンジンの潤滑化
Document Type and Number:
Japanese Patent JP5778662
Kind Code:
B2
Abstract:
Trunk piston marine engine lubrication, when the engine is fueled by heavy fuel oil, is effected by a composition comprising a major amount of an oil of lubricating viscosity containing at least 50 mass % of a Group II basestock, and respective minor amounts of an overbased metal hydrocarbyl-substituted hydroxybenzoate detergent other than such a detergent having a basicity index of less than two and a degree of carbonation of 80% or greater and 5 to 500 mass %, based on the mass of the detergent, of an oil-soluble alkyl-substituted phenol other than a hindered phenol. Asphaltene precipitation in the lubricant, caused by the presence of contaminant heavy fuel oil, is prevented or inhibited.
Inventors:
Bertram richard
Downing Peter
Hartley joseph
Watts Peter
Downing Peter
Hartley joseph
Watts Peter
Application Number:
JP2012507638A
Publication Date:
September 16, 2015
Filing Date:
April 26, 2010
Export Citation:
Assignee:
Infineum International Limited
International Classes:
C10M163/00
Domestic Patent References:
| JP2009091579A | ||||
| JP2007039689A |
Foreign References:
| WO2008128656A1 |
Attorney, Agent or Firm:
Koichi Tsujii
Sadao Kumakura
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki
Satsuki Ichikawa
Koji Watanabe
Sadao Kumakura
Atsushi Hakoda
Kenji Asai
Kazuo Yamazaki
Satsuki Ichikawa
Koji Watanabe