| Citation: | ZANG Xuejing, ZHOU Guanyu, YANG Xiaoyiet al. Key composition of aviation alternative fuel on ignition performance at low temperature[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(5): 1019-1025. doi: 10.13700/j.bh.1001-5965.2018.0559(in Chinese)
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Liquid fuel volatile compositions play an important role for ignition at low temperatures. The composition distribution of aviation kerosene RP-3 and coal-based Fischev-Tropsch F-T fuel in the vapor phase under low temperatures were analyzed in this research. The volatile components and content distribution of the fuel from -40℃ to 15℃ were obtained, and the key materials for engine ignition in low temperature conditions were determined and the ignition boundary test and analysis were carried out. The addition of light hydrocarbons significantly improves the ignition performance of coal-based Fischer-Tropsch fuel. Cycloalkanes are preferential, which are followed by branched alkanes and n-alkanes. It is of significance for the application of aviation alternative fuels in engine cold start and high-altitude relight process.
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