A fuel composition that provides a renewable biofuel energy source for reducing dependence on fossil fuels and improving air quality by reducing the amount of carbon monoxide released into the air during combustion. The fuel composition includes an energy crop comprising: a solid granular component being suspended in a liquid non-petroleum plant based fuel. The liquid fuel containing the granular component is efficacious in releasing copious quantities of vapor for burning. The vapor provides a more complete and efficient burn. The fuel composition further comprises an oxidizing agent for removing a plurality of electrons from the granular component during combustion, and/or an additive that imparts a change in the physical properties of the fuel composition.

A composition of fuel additives includes at least a first additive having a partial ester derivative of polyols and a second additive having a quaternary ammonium salt. The first additive includes at least 50% by mass of a compound A selected from the partial esters of polyols and saturated or unsaturated, linear or branched, cyclic or acyclic C.sub.4 to C.sub.36 monocarboxylic aliphatic hydrocarbarbons, the partial esters being able to be used alone or in a mixture. The disclosure also relates to a diesel fuel including such a composition and the use of the fuel for limiting the deposits in a diesel engine. In particular, the disclosure relates to the use of the fuel containing the composition of additives of the present disclosure in direct-injection diesel engines.

A composition of fuel additives includes at least a first additive having a partial ester derivative of polyols and a second additive having a quaternary ammonium salt. The first additive includes at least 50% by mass of a compound A selected from the partial esters of polyols and saturated or unsaturated, linear or branched, cyclic or acyclic C.sub.4 to C.sub.36 monocarboxylic aliphatic hydrocarbarbons, the partial esters being able to be used alone or in a mixture. The disclosure also relates to a diesel fuel including such a composition and the use of the fuel for limiting the deposits in a diesel engine. In particular, the disclosure relates to the use of the fuel containing the composition of additives of the present disclosure in direct-injection diesel engines.

A quaternary ammonium salt of formula wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently selected from an optionally substituted alkyl, alkenyl or aryl group having less than 8 carbon atoms and R.sup.5 is hydrogen or an optionally substituted hydrocarbyl group.

##STR00001##

A quaternary ammonium salt of formula wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently selected from an optionally substituted alkyl, alkenyl or aryl group having less than 8 carbon atoms and R.sup.5 is hydrogen or an optionally substituted hydrocarbyl group.

##STR00001##

A compound represented by the formula:

##STR00001## wherein each R is independently selected from the group consisting of (i) substituted or unsubstituted alkyl with C=0 to 12 inclusive; wherein X.sup.1, X.sup.2, X.sup.3 and X.sup.4 are each independently selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are each independently selected from the group consisting of alkyl, aryl, alkylaryl groups and hydrogen; and wherein one of R.sup.1 and R.sup.2 and one of R.sup.3 and R.sup.4 may optionally be bridged by a polymethylene group to form a cycloalkyl; wherein when C=0 in R, the combined group R.sup.1 R.sup.2 is the same as the combined group R.sup.3 R.sup.4; and wherein when C=1 in R, each of R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are hydrogen.

The present invention relates to methods of lubricating a hydraulic motor by using a lubricating composition that contains a friction modifier selected from the group consisting of a fatty phosphite, a fatty imidazoline and combinations thereof and supplies improved motor efficiency performance. The invention further provides the lubricating compositions used therein.

The present invention relates to the field of fuel additives for fuel compositions and more particularly to a composition that can be used as a friction modifier, and its preparation process. More particularly, the present invention concerns a composition comprising at least one fatty acid amide of diethanolamine (DEA) and at least one fatty acid ester and/or amide of DEA oligomer, and it preparation process.

The use as a sludge controlling additive in a fuel composition for a spark-ignition internal combustion engine or a compression-ignition gasoline internal combustion engine of a combination of: a. a hydrocarbyl-substituted aromatic compound; and b. a polyalkylene amine. The fuel composition may also be used for maintaining oil pathways and/or lubrication in an engine.

The use as a sludge controlling additive in a fuel composition for a spark-ignition internal combustion engine or a compression-ignition gasoline internal combustion engine of a combination of: a. a hydrocarbyl-substituted aromatic compound; and b. a polyalkylene amine. The fuel composition may also be used for maintaining oil pathways and/or lubrication in an engine.