Marine lubricants enabling future fuels
AssigneeChevron Oronite Company LLC
InventorsTheodorus Constance CLEOPHAS, Shenghua LI
Life of this patent
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Abstract
A marine cylinder lubricating oil composition for a non-carbon based fueled marine engine is disclosed. The composition includes a major amount of an oil of lubricating viscosity and a mixture of overbased phenol-based detergent and overbased calcium sulfonate detergent. The composition has a TBN of less than 200 mg KOH/g, and is a monograde lubricating oil composition meeting the specifications for SAE J300 revised January 2015 requirements for a SAE 20, SAE 30, SAE 40, SAE 50 or SAE 60 monograde lubricating oil.
Claims27
A marine cylinder lubricating oil composition for a non-carbon based fueled marine engine comprising:
- (a) a major amount of an oil of lubricating viscosity;
- and
- (b) a mixture of overbased phenol-based detergent and overbased calcium sulfonate detergent;
- and
- wherein the marine cylinder lubricating oil composition has a TBN of less than 200 mg KOH/g, and further wherein the marine engine lubricating oil composition is a monograde lubricating oil composition meeting the specifications for SAE J300 revised January 2015 requirements for a SAE 20, SAE 30, SAE 40, SAE 50 or SAE 60 monograde lubricating oil.
A method of lubricating a marine two-stroke engine operated using ammonia fuel, the method comprising lubricating the engine with a lubricating oil composition comprising:
- (a) a major amount of an oil of lubricating viscosity;
- and
- (b) a mixture of an overbased phenol-based detergent and an overbased calcium sulfonate detergent;
- and
- wherein the marine cylinder lubricating oil composition has a TBN of less than 200 mg KOH/g, and further wherein the marine engine lubricating oil composition is a monograde lubricating oil composition meeting the specifications for SAE J300 revised January 2015 requirements for a SAE 40, SAE 50 or SAE 60 monograde lubricating oil.
A method of improving or maintaining deposit control performance and/or oxidative stability of an ammonia-fueled marine engine, the method comprising:
- lubricating the engine with a lubricating oil composition comprising:
- (a) a major amount of an oil of lubricating viscosity;
- and
- (b) a mixture of an overbased phenol-based detergent and an overbased calcium sulfonate detergent;
- and
- wherein the marine cylinder lubricating oil composition has a TBN of less than 200 mg KOH/g, and further wherein the marine engine lubricating oil composition is a monograde lubricating oil composition meeting the specifications for SAE J300 revised January 2015 requirements for a SAE 40, SAE 50 or SAE 60 monograde lubricating oil.
Dependencies are inferred from the claim text.