Fuel compositions

C - Chemistry – Metallurgy – 10 – L

Patent

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Details

C10L 1/14 (2006.01) C10L 1/188 (2006.01) C10L 1/189 (2006.01) C10L 1/19 (2006.01) C10L 1/224 (2006.01) C10L 1/2383 (2006.01) C10L 10/14 (2006.01)

Patent

CA 2649764

Use, in a fuel composition containing a distillate fuel, a detergent additive and a cold flow additive, of a further additive selected from (a) acids and mixtures thereof; and (b) lubricity enhancing additives, for the purpose of reducing the effect of the detergent additive on the cold flow performance of the composition, and/or improving the cold flow performance of the composition, and/or reducing the amount of cold flow additive in the composition, and/or increasing the concentration of detergent additive in the composition without undo impairment of the cold flow performance. The further additive is preferably selected from carboxylic acids, more preferably fatty acids, and mixtures thereof. The distillate fuel is preferably a middle distillate fuel. The overall fuel composition is preferably an automotive fuel composition, more preferably a diesel fuel composition.

Utilisation, dans une composition de carburant contenant un carburant de distillat, un additif détergent et un additif de fluage à froid, d'un autre additif choisi parmi (a) les acides et les mélanges de ceux-ci ; et (b) les additifs d'amélioration de l'onctuosité, dans l'objectif de réduire l'effet de l'additif détergent sur la performance de fluage à froid de la composition, et/ou d'améliorer la performance de fluage à froid de la composition, et/ou de réduire la quantité d'additif de fluage à froid dans la composition, et/ou d'augmenter la concentration d'additif détergent dans la composition sans nuire exagérément à la performance de fluage à froid. L'autre additif est, de préférence, choisi parmi les acides carboxyliques, et plus encore les acides gras, et les mélanges de ceux-ci. Le carburant de distillat est, de préférence, un carburant de distillat moyen. La composition de carburant globale est, de préférence, une composition de carburant pour automobiles, et plus encore une composition de carburant diesel.

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