Marine engine lubrication

Details Marine engine lubrication Marine engine lubrication

2009-05-14

2011-12-06

Griffin, Walter D (Department: 1774)

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic -co- compound

C508S502000, C508S503000

Reexamination Certificate

active

08071517

ABSTRACT:
A trunk piston marine engine lubricating oil composition for a medium-speed compression-ignited marine engine comprises, in a major amount, an oil of lubricating viscosity containing 50 mass % or more of a Group II basestock, and, in respective minor amounts, (A) an overbased metal hydrocarbyl-substituted hydroxybenzoate detergent having a basicity index of 4.5 or less, and (B) an overbased metal hydrocarbyl-substituted hydroxybenzoate detergent having a basicity index of greater than 4.5. The ratio of detergent (A) to detergent (B), both expressed as mass of active ingredient, is in the range from 0.5 to 15. The trunk piston marine engine lubricating oil composition has a TBN (using ASTM D2896) of 20 to 60.

REFERENCES:
patent: 6140282 (2000-10-01), Cartwright et al.
patent: 2003/0195126 (2003-10-01), Boons
patent: 2004/0121918 (2004-06-01), Rea et al.
patent: 2004/0138076 (2004-07-01), Muir et al.
patent: 2005/0119140 (2005-06-01), Chambard et al.
patent: 2006/0116302 (2006-06-01), Deckman et al.
patent: 1889896 (2008-02-01), None
patent: 23590093 (2001-08-01), None
patent: 2005263861 (2005-09-01), None

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