Patent ID: 7374589

Claim:
A diesel engine fuel, comprising: sulfur in a content lower than 500 ppm; a major portion of at least one middle distillate originating from a direct distillation cut of crude oil at temperatures of between 150 and 400° C.; and at least one lubricity additive selected from the group consisting of (a) and (b): (a) at least 20 ppm of an additive which comprises a combination of: at least one saturated or unsaturated, monocarboxylic aliphatic hydrocarbon having a linear chain of between 12 and 24 carbon atoms, and at least one polycyclic hydrocarbon compound containing at least two rings, each formed by 5 to 6 atoms of which at most one is optionally a heteroatom and the others are carbon atoms, the rings additionally having two carbon atoms in common, the rings being saturated or unsaturated, unsubstituted or substituted by at least one carboxylic group; (b) at least one of an amine carboxylate and ester derivatives of one or more of the acids of at least one saturated or unsaturated, monocarboxylic aliphatic hydrocarbon having a linear chain of between 12 and 24 carbon atoms, and at least one polycyclic hydrocarbon compound containing at least two rings, each formed by 5 to 6 atoms of which at most one is optionally a heteroatom and the others are carbon atoms, the rings additionally having two carbon atoms in common, the rings being saturated or unsaturated, unsubstituted or substituted by at least one carboxylic group or an amine carboxylate group or an ester group.