Additive compositions that improve the stability and the engine performances of diesel fuels
AssigneeTotal Marketing Services
InventorsFrédéric Tort, Christian Vermorel
Life of this patent
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Abstract
An additive composition improves the stability and the engine performances of gas oils, including gas oils of the non-road type in compliance with the decree of 10 Dec. 2010. The additive composition includes: at least one metal deactivator or chelating agent, at least one antioxidant of the hindered phenol type (alkylphenol), at least one dispersant and/or detergent, and at least one metal passivator, wherein the composition includes improved properties, in particular relative to the oxidation resistance, storage stability, thermal stability, reduction in fouling of the injectors, reduction in loss of power, reduction in the tendency of filters to clog.
Claims14
A liquid fuel composition of a gas oil type, comprising:
- a majority part of a mixture based on liquid hydrocarbons having distillation temperatures comprised between 150 and 380° C.;
- and
- a minority part comprising an additive composition comprising:
- from 0.1 to 5% by mass of at least one metal deactivator or chelating agent chosen from amines substituted by N,N′-disalicylidene groups;
- from 1 to 30% by mass of at least one antioxidant of a hindered phenol type (alkylphenol);
- from 0.5 to 20% by mass of at least one dispersant and/or detergent;
- and
- from 0.1 to 5% by mass of at least one metal passivator chosen from amines substituted by triazole groups, alone or in a mixture.
Dependencies are inferred from the claim text.