Energy-saving, environment-friendly, water-removing and carbon-deposit fuel additive for gdi engine and preparation method thereof

Abstract

The invention discloses an energy-efficiency and environment-friendly fuel additive for a GDI engine for removing water and carbon deposit and a preparation method thereof. The additive contains a solvent, an accelerant, a catalyst, a corrosion remover and a surfactant. The additive concretely comprises the following components by weight percent: 12-25% of absolute ethyl alcohol, 1-2% of sodium dodecyl benzene sulfonate, 0.5-1% of N,N-bishydroxyethyl alkyl amide, 0.5-1.5% of sodium benzoate,10-30% of solketal and 50-75% of AE-O6. The composition disclosed by the invention is added to the gasoline, and subjected to chemical reaction together with unsaturated hydrocarbon in the gasoline, so as to generate an epoxy compound, so that the concentration of peroxide generated in the overall combustion process is reduced, a plurality of flame centers are avoided, and the action of spreading an active burning core to a non-combustion area is weakened. Thus, more complete combustion can be provided, and emission of CO and the like is reduced.

Description

【Technical field】 [0001] The invention relates to a fuel additive and a preparation method thereof, in particular to an energy-saving, environment-friendly, water-removing and carbon-depositing fuel additive for a GDI engine and a preparation method thereof, belonging to the technical field of chemical industry. 【Background technique】 [0002] In terms of internal combustion engine energy saving and environmental protection technology, GDI (Gasoline Direct Injection) engine has been rapidly applied to various mainstream models due to its higher fuel efficiency and lower exhaust emission performance. Although the GDI engine is more advanced, due to various factors such as poor fuel quality, sulfur and phosphorus antioxidants used in lubricating oil, and urban road congestion, after the car has been driving for a period of time, the intake system and combustion system of the engine still remain Colloidal carbon deposits will be produced, and the oxygen sensor of the exhaust sy...

AI Technical Summary

Problems solved by technology

[0005] 3. When the GD I gasoline engine is burning with ultra-lean mixture, it is easy to cause carbon deposition due to high temperature and misfire

In addition, the gasification and evaporation of fuel makes the temperature in the cylinder low, and the flame gradually weakens during the propagation process after ignition, resulting in flameout, so that the mixture cannot be fully combusted, and carbon deposits are generated.

[0006] 4. Unburned hydrocarbons (UBHC) are emitted more under medium and small loads. Because the stratified gas mixture is used, it is easy to cause the flame to go out from the rich area to the lean area. Conducive to the subsequent continued oxidation of unburned hydrocarbons

Commercially available gasoline additives are mostly packaged by cleaning products, which need to be added each time to have a certain cleaning effect on the vehicle; however, it is difficult to effectively clean the carbon deposits that have been generated in the combustion system

The technical solutions of certain additives are originally designed for PFI engines and even carburetor models. Improper use will increase the combustion chamber deposits (CCD) of GDI engines and affect the normal service life of the engine.

On the whole, there are many researches on the additives used in the production process of petrochemical fuels to improve gasoline performance, and the engine maintenance products for automobile end users are mainly developed for the working and structural characteristics of PFI engines, and there are few researches on products applied to GDI engines

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