| Citation: | CHEN Shisiling, WANG Bin. Energy consumption analysis on fuel system of more-electric engine with bleed air-driven afterburn pump[J]. Journal of Aerospace Power, 2026, 41（2）：20240396 doi: 10.13224/j.cnki.jasp.20240396
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In view of the high power density integrated electric fuel pump of more-electric engine, which is difficult to meet the demand of fuel quantity supply and regulation of the afterburn state, an afterburn fuel pump along with its regulating system based on intermediate-stage air-driven engine pressurizer was proposed, the mathematical models of the engine component level and the air turbine driving machine were established, and the whole-system numerical simulation combined with the model of the fuel/oil system was carried out. Accordingly, the fuel system and engine performance of the scheme were analyzed under the typical afterburn stage, and compared with the conventional drive mode. The results showed that the fuel system based on the pressurized intermediate-stage bleed air-driven afterburn pump can effectively avoid the energy loss of the conventional fuel system with large regulation ratio fuel supply throttling or bypass return, and reduce the fuel temperature rise under the premise of ensuring the effect of oil cooling. When the engine was under afterburn stage, the bleed air-driven afterburn fuel pump system reduced the extracted power by 46.1% and the main fuel temperature by 27.9% compared with the conventional solution, showing almost no impact on the engine performance.
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