| Citation: | SUN Haobo, LI Linghan, LIU Xiaofeng. Analysis of low frequency pulsation of main fuel system on turbofan engine[J]. Journal of Aerospace Power, 2024, 39（10）：20220660 doi: 10.13224/j.cnki.jasp.20220660
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In view of the problem of low-frequency pulsation in the main fuel system of turbofan engine that could affect the safety of the engine, the mechanism of low-frequency pulsation in the fuel system was analyzed, and the influencing factors of low-frequency pulsation were clarified. Starting from the influencing factors of pulsation, and combined with the working principle of the main fuel system and the relationship between related accessories and pipeline assembly, the reason for the large low-frequency pulsation in the system was pinpointed, and an improvement method to suppress the low-frequency pulsation by adjusting the size of the valve type orifice was proposed. The improved valve was verified with a turbofan engine. The test results showed that the improvement method is reasonable and effective, and the pulsation amplitude can be reduced by 5% to 84%, greatly improving the working reliability of the engine's main fuel system and ensuring the safety of the engine.
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