Energy-efficiency and environment-friendly fuel additive for GDI engine for removing water and carbon deposit and preparation method thereof

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.