▎ 摘　　要

NOVELTY - Nano-gold fuel additive comprises 1-5 wt.% nano-gold, 5-10 wt.% graphene, 8-15 wt.% nano silicon dioxide, 3-8 wt.% polyisobutylene succinimide, 8-12 wt.% rare earth metal salt, 3-8 wt.% surfactant and 42-56 wt.% solvent. USE - Used as nano-gold fuel additive. ADVANTAGE - The nano-gold fuel additive: reduces the emissions of harmful substances after fuel combustion by 88-95% through the interaction between the components, and increases the fuel-saving rate of the vehicle by 22-28%. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing nano-gold fuel additive comprising (i) mixing uniformly nano gold, graphene, nano silicon dioxide and rare earth metal salt by ultrasonic oscillation method, (ii) adding ultrasonically oscillated mixture to a mixed solvent composed of polyisobutylene succinimide, surfactant and solvent, and stirring uniformly to obtain nano-gold fuel additive.