Exxonmobil Research and Engineering Company

Mobil Oil Corporation

Exxonmobile Research and Engineering Company

Vincent Mark Carey

Kevin L Crouthamel

Kevin John Kelly

Keith Preston Saddler

Kathleen Hoard Tellier

Liehpao O Farng

Evelyn N Drake

Peter Calcavecchio

Paul Thomas Reischman

John T Fogarty

Kathleen H Tellier

Kevin Louis Crouthamel

Evelyn Nobles Drake

Leihpao Oscar Farng

The present invention is directed to a method for improving the fuel efficiency of low and medium speed engine oil compositions by reducing the traction coefficient of the oil by formulating the oil using at least two base stocks of different kinematic viscosity wherein the differences in kinematic viscosity between the base stocks is at least 30 mm/s.

Method for improving the fuel efficiency of engine oil compositions for large low and medium speed engines by reducing the traction coefficient

The present invention is directed to a method for improving the fuel efficiency of large engine oil compositions by reducing the traction coefficient of the oil by formulating the oil using at least two base stocks of different kinematic viscosity wherein the differences in kinematic viscosity between the base stocks is at least 32 mm/s, and, preferably, additizing the composition with a salicylate detergent, a mixture of salicylate-phenate detergents or a mixture of sulfonate and phenate detergents.

Method for improving the fuel efficiency of engine oil compositions for large low and medium speed gas engines by reducing the traction coefficient

The present invention is directed to a method for improving the fuel efficiency of large low and medium speed engine oil compositions by reducing the traction coefficient of the oil by formulating the oil using a blend consisting of one or more Group I base oils having a kinematic viscosity at 100&#xb0; C. of from 2 to less than 12 mm/s in combination with a Group IV base oil having a kinematic viscosity of at least 38, the difference in kinematic viscosity between the Group I and Group IV oils in the blend being at least 30 mm/s in combination with a detergent.

The present invention is directed to a method for improving the fuel efficiency of engine oil compositions by reducing the traction coefficient of the oil by formulating the oil using a blend of one or more first base stock(s) selected from Group II base stock, Group III base stock and Group IV base stock and a second base stock selected from polyisobutylene (PIB) and, preferably, additized with a detergent.

The present invention is directed to a method for improving the fuel efficiency of engine oil compositions for large low, medium and high speed engines by reducing the traction coefficient of the oil by formulating the oil using at least two base stocks of different kinematic viscosity wherein the differences in kinematic viscosity between the base stocks is at least 30 mm/s, and additizing the composition with one or more detergents.

Method for improving the fuel efficiency of engine oil compositions for large low, medium and high speed engines by reducing the traction coefficient

An improved lubricating composition suitable for diesel engines comprising a major amount of at least one oil of lubricating viscosity and a minor amount of an alkylamine-alkylphosphate additive. The alkylamine-alkylphosphate additive comprises from at least 1.25 equivalents of alkylamine to 1.0 equivalents of alkylphosphate.

Lubricating composition suitable for diesel engines

A marine diesel engine system includes a diesel engine having a plurality of cylinders. The system also includes, proximate the engine, a primary engine lubricant and an additive selected from certain alkylamine-alkylphosphates, 500 TBN calcium sulfonate and mixtures thereof. A means for blending the lubricant and additives into a mixture for introduction into a cylinder is provided. Thus lubricant properties may be modified depending upon engine conditions.

Modification of lubricant properties in an operating all loss lubricating system

A device and a method for the modification of an operating all-loss engine lubricant's properties in response to actual engine operating conditions. The present invention is a method that comprises (1) monitoring the specific engine parameter(s) of interest, or in the alternative, predicting those parameter(s) from other engine inputs for a crosshead diesel engine; (2) calculating from said parameter(s) or input(s) the amount of performance enhancer(s), base lubricant or alternatively formulated lubricant that need be added to the engine's base lubricant; and (3) modifying said base lubricant with said performance enhancers, additional base lubricant or alternatively formulated lubricant before introduction the combination into said monitored part or location.

A device and a method for real time optimizing engine lubricating oil properties in response to actual engine operating conditions. the present invention is a method that comprises measuring, directly or indirectly, a system parameter of interest near a location of interest, calculating from said parameter(s) or input(s) the amount of a secondary fluid selected from performance enhancer(s), additional base lubricant, alternatively formulated lubricant or diluent that need be added to the base lubricant; and supplementing said base lubricant with said secondary fluid before introducing the combination into said monitored location.

Modification of lubricant properties in a recirculating lubricant system

A method to employ instrumentation to effectuate variation in lubricant flow rate or properties in response to actual engine conditions. Preferably, the present invention provides a method for the in situ monitoring of the lubricating oil's effectiveness in a two-stroke diesel engine by measuring the used lubricant's Fe content and fuel sulfur content with XRF technology and the used lubricant's BN with an IR measurement device, and for efficiently modifying the lubricant's properties and/or flow rate to the equipment in response to the actual wear or corrosion needs of the machinery or engine.

Method of employing instrumentation to efficiently modify a lubricant's flow rate or properties in an operating all-loss lubricating system

Diesel engine cylinder oils of improved cleanliness and load carrying ability and reduced port deposit characteristics for use in marine and stationary slow speed diesel engines are based on medium heavy Group I or Group II neutral base oils, typically from 300 to 500 SUS using a liquid, oil-miscible polyisobutylene (PIB) in combination with the neutral base stock and an additive package comprising a detergent component or components, an antioxidant, an antiwear agent, and a dispersant. The detergent component preferably comprises one or more overbased phenates, phenylates, salicylates or sulfonates in order to confer the desired alkalinity characteristics on the finished oil. The oils are produced in the viscosity range of 15 to 25 cS (100&deg; C.), usually with a nominal viscosity of 20 or 24 cS, i.e., from 18.5 to 21.9 cS or 21.9 to 26.1 cS (100&deg; C.). The viscosity index of the improved oils is at least 95, typically from 105 to 120. Total Base Number of the oils is in the range 40 to 100.

Growing community of inventors

Sewell, NJ, United States of America

Vincent Mark Carey