| 发明名称 |
MARINE ENGINE LUBRICATION |
| 摘要 |
A detergent system that includes (i) an overbased C20-28 alkyl-substituted hydroxybenzoate Ca salt of TBN less than 250 and (ii) an overbased C14-18 alkyl-substituted hydroxybenzoate Ca salt of TBN less than 250, the wt % Ca ratio of (ii) to (i) being more than one, is used in a trunk piston marine lubricant to improve its asphaltene dispersancy when lubricating a medium-speed compression-ignited marine engine fuelled by a heavy fuel oil. |
| 申请公布号 |
US2015018258(A1) |
申请公布日期 |
2015.01.15 |
| 申请号 |
US201414326551 |
申请日期 |
2014.07.09 |
| 申请人 |
Infineum International Limited |
发明人 |
Gregory Laura;Short Ben Luke |
| 分类号 |
C10M129/54 |
主分类号 |
C10M129/54 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for improving asphaltene dispersancy in a trunk piston marine engine, the method comprising lubricating the engine with a lubricating oil composition comprising a detergent system that includes (i) an overbased alkyl-substituted hydroxybenzoate calcium salt of TBN less than 250, which alkyl group has 20-28 carbon atoms, and (ii) an overbased alkyl-substituted hydroxybenzoate calcium salt of TBN less than 250, which alkyl group has 14-18 carbon atoms; the wt. % Ca ratio of (ii) to (i) being greater than one. |
| 地址 |
Abingdon GB |
