In order to carry out comprehensive evaluation of the performance of different aromatic hydrocarbon types and contents on aero engines

engine emission exhaust soot concentration experiments on 3 blended fuels of 16 aromatic hydrocarbons were conducted. According to the measured particulate emission concentration value

the effects of the types and content of aromatic hydrocarbons on the impact of emissions were compared; the correlation between aromatic hydrocarbon characteristics and PM emissions was calculated through linear fitting; and by combining these two important factors of fuel energy density and emissions

a comprehensive evaluation ranking was given. The analysis results showed that the PM concentration produced by indene and naphthalene series was significantly higher

and the emission after hydrotreatment was significantly improved. In addition

the density and carbon-hydrogen ratio of aromatic hydrocarbons had the greatest influence on PM

and the influence became more significant with the increase of aromatic hydrocarbon concentration. Finally

p-cumene and styrene were listed as the best two aromatic hydrocarbons in the comprehensive assessment. In addition

the series of naphthalene hydrotreating can simultaneously optimize specific energy and emissions. This result provides a research basis for optimizing fuels by controlling the types of aromatics in the fuel.