Abstract:
A method of combating internal diesel injector deposits caused by carboxylate residues and/or lacquers in the injectors of a diesel engine, the method comprising combusting in the engine a diesel fuel composition comprising (a) the reaction product of a carboxylic acid-derived acylating agent and an amine and (b) a quaternary ammonium salt additive.
Abstract:
L'invention concerne une composition contenant un additif d'aide à la régénération du FAP sous la forme d'une dispersion organique de particules de fer sous forme cristallisée et d'un détergent comprenant un sel d'ammonium quaternaire.
Abstract:
A fuel soluble additive for a gasoline or diesel engine, a method for making the additive, a fuel containing the additive, a method for improving performance of fuel injectors for an engine. The fuel soluble additive includes an esterified quaternary ammonium salt derived from a tertiary amine, an epoxide, a proton donor and an anhydride.
Abstract:
An additive composition, on use in a fuel in a spark-ignition internal combustion engine, controls the formation of sludge and piston varnish. When used in a direct injection spark-ignition internal combustion engine, particulate emissions and deposit formation on intake valves may also be controlled. When used in a port fuel injection spark-ignition internal combustion engine, the port fuel injection valve deposits may be reduced. The additive composition comprises a polyalkylene amine and a hydrocarbyl-substituted hydroxyaromatic compound. The additive compositions may be present in a fuel composition.
Abstract:
A detergent additive package, fuel additive concentrate, fuel composition and method for operating an engine on an unleaded gasoline fuel. The additive package includes a Mannich base detergent mixture, wherein the mixture contains a first Mannich base detergent component derived from a di- or polyamine and a second Mannich base detergent component derived from a monoamine. A weight ratio of the first Mannich base detergent to the second Mannich base detergent in the mixture ranges from about 1:6 to about 3:1.
Abstract:
The present invention relates to a lubricating composition comprising an oil of lubricating viscosity and a (thio)phosphate salt of an amine-functionalized esterified copolymer, wherein the esterified copolymer comprises units derived from monomers: (i) an ±-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof, that are esterified with an alcohol, or mixtures thereof, and wherein at least a portion of carboxylic acid groups not esterified react with an amine. The invention further provides for a lubricating composition containing said copolymer. The invention further provides a method and use of lubricating composition in a mechanical device.