Marine fuel compositions with reduced engine frictional losses
AssigneeExxonMobil Research and Engineering Company
InventorsAditya S. Shetkar, Kenneth C. H. Kar, Scott K. Berkhous
Life of this patent
Estimating the term…
Abstract
Marine gas oil compositions corresponding to fuels and/or fuel blending components are provided that can provide improved friction properties within an engine. Addition of lubricant base stock to a marine gas oil composition can reduce frictional losses within an engine during operation. The benefits in reduction of frictional losses can be observed based on the difference between the indicated mean effective pressure and the actual work delivered by an engine, where the difference corresponds to the frictional mean effective pressure.
Claims20
A marine gas oil composition comprising 1.0 vol % to 25 vol % of a lubricant base stock, the lubricant base stock comprising a T5 distillation point of 350° C. or more, a kinematic viscosity at 100° C. of 3.0 cSt or more, and a viscosity index of 80 or more, the marine gas oil composition comprising a density at 15° C. of 0.81 g/cm3 to 0.90 g/cm3, a calculated cetane index of 40 or more, and a kinematic viscosity at 40° C. of 2.0 cSt to 11.0 cSt.
Dependencies are inferred from the claim text.