Use of a liquid fuel composition in an internal combustion engine, the internal combustion engine containing a lubricating composition for lubricating said internal combustion engine, wherein the liquid fuel composition comprises at least one nitrogen-containing detergent additive, for the purpose of reducing engine wear caused by the presence of soot in the lubricating composition.

Use of a liquid fuel composition in an internal combustion engine, the internal combustion engine containing a lubricating composition for lubricating said internal combustion engine, wherein the liquid fuel composition comprises at least one nitrogen-containing detergent additive, for the purpose of reducing engine wear caused by the presence of soot in the lubricating composition.

Nanoparticles of calcium hydroxide having a dumbbell shape, wherein the dumbbell shape has rounded ends separated by a narrow central portion, wherein a ratio of a largest width of the central portion to a largest width of the rounded ends is 0.30 to 0.75, a length is in the range of 500 nm to 1100 nm, the largest width of the narrow central portion is 100 to 250 nm, and the largest width of the narrow central portion is 100 to 250 nm. The nanoparticles have a mesoporous structure and are made up of subparticles that have a size of 5 to 75 nm. A method of making the nanoparticles from calcined calcium carbonate sources is disclosed. Also disclosed is an enhanced fuel containing the nanoparticles.

The invention relates to a fuel composition based on a diesel fraction, having a sulphur content of less than 10 mg/kg with the boiling range of 180-360° C., characterized in that said fuel composition contains organic peroxides as ignition promoters, which are selected from the group: di-tert-butyl peroxide, 1,1-di-(tert-butylperoxy)cyclohexane, dicumyl peroxide, tert-butyl cumyl peroxide, isobutyl cumyl peroxide, n-butyl cumyl peroxide, isopropyl cumyl peroxide, ethyl cumyl peroxide and methyl cumyl peroxide, and contains an anti-wear additive based on carboxylic acids having the following ratio of components, wt %: 0.01-0.5 organic peroxide, 0.005-0.1 anti-wear additive, and up to 100 being the diesel fraction. The proposed diesel fuel composition allows producing diesel fuel which meets quality performance requirements.

The invention relates to a fuel composition based on a diesel fraction, having a sulphur content of less than 10 mg/kg with the boiling range of 180-360° C., characterized in that said fuel composition contains organic peroxides as ignition promoters, which are selected from the group: di-tert-butyl peroxide, 1,1-di-(tert-butylperoxy)cyclohexane, dicumyl peroxide, tert-butyl cumyl peroxide, isobutyl cumyl peroxide, n-butyl cumyl peroxide, isopropyl cumyl peroxide, ethyl cumyl peroxide and methyl cumyl peroxide, and contains an anti-wear additive based on carboxylic acids having the following ratio of components, wt %: 0.01-0.5 organic peroxide, 0.005-0.1 anti-wear additive, and up to 100 being the diesel fraction. The proposed diesel fuel composition allows producing diesel fuel which meets quality performance requirements.

Provided is a fuel composition for improving fuel efficiency. The fuel composition includes greater than 50 wt % of a hydrocarbon fuel boiling in the gasoline or diesel range, a minor amount a zinc chelator, and a minor amount of a friction modifier. The friction modifier includes at least one polar group.

The present invention relates to a fuel composition comprising a liquid fuel and a compound of dimer amide quaternary ammonium type. The invention also relates to the use of the compound of dimer amide quaternary ammonium type as a detergent additive in a liquid fuel for internal combustion engine.

A fuel composition comprising a fuel and a lubricity additive where the lubricity additive is selected from (1) 1-Lauroyl-rac-glycerol, (2) Dodecanamide, N-hydroxy-, or (3) 2-Ethylhexanoic acid and the fuel is gasoline.

A fuel composition comprising a fuel and a lubricity additive where the lubricity additive is selected from (1) 1-Lauroyl-rac-glycerol, (2) Dodecanamide, N-hydroxy-, or (3) 2-Ethylhexanoic acid and the fuel is gasoline.

Lubricity additives for hydrocarbon fuels are provided according to formula I: ##STR00001##
wherein n is 1 or 0; each Q is independently selected from oxygen and sulfur; each R is independently selected from C8-C60 alkenyl groups which are substituted or unsubstituted; and L is a linking group comprising 0-20 carbons which may be substituted or unsubstituted and may optionally comprise catenary heteroatoms. Fuel mixtures comprising a hydrocarbon fuel; and a lubricity additive according to the present disclosure are also provided. Methods of making lubricity additives comprise reacting an alkenyl succinic anhydrides (ASA's) with certain bisamides or bisthioamides.