Patent ID: 7938867
Filing Date: 2011-05-10
Classification: C10L

Abstract:
1. A process for increasing the efficiency of an exhaust after-treatment device of an internal combustion engine, comprising: operating the engine with a fuel composition comprising (a) a detergent/dispersant additive in a medium substantially free of to free of sulphur; and (b) a liquid fuel; wherein the contribution of component (a) to the total sulphur content of the fuel composition is less than about 20 ppm by weight, and the exhaust after-treatment device is suitable for reducing emissions of at least one member of the group consisting of particulate matter, NO wherein the medium substantially free of to free of sulphur comprises an aliphatic hydrocarbon solvent having a flashpoint of about 120° C. or higher; and wherein the composition does not contain an emulsified fuel.