Abstract:
The present invention is directed to a method to clean up or keep clean the fuel system of a direct injection spark-ignited engine by operating the engine with a fuel composition that includes a liquid fuel and a fuel additive composition.The fuel additive composition useful in the present invention has at least one nitrogen-containing dispersant and optionally a fluidizer where the dispersant has a specific lipophilic parameter and the dispersant or the dispersant and the fluidizer have a specific hydrophilic-lipophilic parameter, the dispersant provides about 0.15 to about 50 ppm by weight nitrogen in the fuel composition, and the fluidizer and/or the dispersant provide about 10 to about 10,000 ppm by weight active components.The method of the present invention is effective in controlling deposits in fuel injectors and combustion chambers of a direct injection spark-ignited engine.
Abstract:
In a method operating an internal combustion engine, a nitrogen-containing detergent composition is introduced into a combustion chamber of the engine wherein the detergent composition can improve the performance of both a fuel composition and a lubricating oil of the engine. The detergent composition contains (A) a reaction product of a hydrocarbyl-substituted acylating agent and an amine, (B) a hydrocarbyl-substituted amine, (C) a Mannich reaction product, (D) a high molecular weight polyetheramine, or (E) a mixture thereof.
Abstract:
The present invention is directed to fuel additive compositions of detergents combined with fluidizers and to hydrocarbon fuel compositions containing these fuel additive compositions. The fuel additive compositions of the present invention combine a Mannich detergent, formed from reaction of an alkylphenol with an aldehyde and an amine, with a fluidizer that can be a polyetheramine or a polyether or a mixture thereof and, optionally, with a succinimide detergent. Fuel compositions containing these fuel additive compositions are very effective in reducing intake valve deposits in gasoline fueled engines, especially when the weight ratio of detergent(s) to fluidizer(s) is about 1:1 on an actives basis.
Abstract:
The invention relates to a composition containing an additive for assisting particulate tiller regeneration in the fonn of an organic dispersion of iron particles in crystallized fonn and a detergent comprising a quaternary ammonium salt.
Abstract:
The invention relates to a composition containing an additive for assisting particulate filter regeneration in the form of an organic dispersion of iron particles in crystallized form and a detergent comprising a quaternary ammonium salt.
Abstract:
The invention relates to a composition containing an additive for assisting particulate filter regeneration in the form of an organic dispersion of iron particles in crystallized form and a detergent comprising a quaternary ammonium salt.
Abstract:
L'invention concerne une composition contenant un additif d'aide à la régénération du filtre à particules sous la forme d'une dispersion organique particules de fer et d'un détergent comprenant un sel d'ammonium quaternaire polyester.
Abstract:
The present invention relates to compositions containing a detergent composition and an active metal containing compound, where the detergent composition includes a quaternary ammonium salt detergent and optionally an oxygen-containing detergent, and where the active metal containing compound is in the form of a colloidal dispersion, comprising an organic phase, particles of an iron compound in its amorphous form, and at least one amphiphilic agent. These compositions may be used in fuels and provide improved engine performance when such fuels are used, specifically by reducing fuel injector fouling in the engine and/or by improving the regenera¬ tion of the engine's particulate exhaust trap.
Abstract:
Utilización de una composición que comprende una dispersión y un detergente que comprende una sal de amonio cuaternario, comprendiendo dicha dispersión: - una fase orgánica; - al menos un agente anfífilo; y - unos objetos sólidos dispersados en la fase orgánica, en forma de partículas individualizadas o de agregados de partículas, constituidos por un compuesto de hierro en forma cristalizada, tales que dichas partículas presentan un tamaño medio D drx inferior o igual a 12 nm medido por difracción de rayos X, a título de aditivo de combustible para motores de combustión interna para ayudar con la regeneración de un FAP.