| Citation: | ZI Hailin, ZHAO Teng, HUANG Kaiming, et al. Experimental testing on influence of aromatic hydrocarbon content on exhaust emission of turboshaft engine[J]. Journal of Aerospace Power, 2026, 41(6):20250230 doi: 10.13224/j.cnki.jasp.20250230 |
In order to obtain the exhaust emission level and the influence of aromatic hydrocarbon content on exhaust emission of turboshaft engine, different aromatic hydrocarbon contents were obtained by adding toluene (C6H5CH3) to RP-3 aviation kerosene, and the exhaust emission measurement experiment of the turboshaft engine was carried out. Result showed that, with the increase of engine power state, the emission index of CO decreased significantly, the emission index of UHC approached to 0, the emission index of NOx gradually increased, and the smoke number increases gradually. The volume fraction of aromatic hydrocarbons increased by 3.5%, in the take-off state and the maximum continuous state, the degree of change in Smoke Number was less than 10.3%, and the variation degree of combustion efficiency and emission index of CO and NOx was less than 5%. Through the analysis of data credibility, the maximum relative deviation of the oil-gas ratio was 4.2%, which was better than the specification requirements. This verified the reliability of the designed and built exhaust emission measurement system and test, providing a basis for evaluating the impact of aromatic hydrocarbon content in fuel on the exhaust emission of aero engines.
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