基于引气驱动加力泵的多电发动机燃油系统能耗研究

陈诗思凌; 王彬

doi:10.13224/j.cnki.jasp.20240396

基于引气驱动加力泵的多电发动机燃油系统能耗研究

doi: 10.13224/j.cnki.jasp.20240396

陈诗思凌,
王彬^*, ,

南京航空航天大学能源与动力学院，南京 210016

基金项目: 国家自然科学基金（52275060）

详细信息

作者简介:
陈诗思凌（2002-），男，硕士生，主要从事航空发动机燃油系统建模仿真研究。E-mail：cssl01@nuaa.edu.cn

通讯作者:
王彬（1978-），男，副教授，博士，主要从事智能燃油系统与先进执行机构设计研究。E-mail：binwang@nuaa.edu.cn

中图分类号: V233.2
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出版历程
- 收稿日期: 2024-06-18
- 网络出版日期: 2025-11-04

Energy consumption analysis on fuel system of more-electric engine with bleed air-driven afterburn pump

CHEN Shisiling,
WANG Bin^{*
, ,}

College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

摘要

摘要:
针对多电发动机高功率密度一体化电动燃油泵难以满足加力燃油质量流量供调需求，提出一种基于发动机压气机中间级引气驱动的加力燃油泵及其调节系统，建立了发动机部件级数学模型与空气涡轮驱动机数学模型，并结合燃/滑油系统模型进行了全系统数字仿真。据此分析了典型加力状态下，该方案的燃油系统及发动机性能，并与常规驱动方式进行了对比。结果表明：基于压气机中间级引气驱动加力泵的燃油系统，可有效避免传统燃油系统大调节比供油节流或旁通回油的能量损耗，并在确保滑油冷却效果前提下降低燃油温升。发动机处于加力状态时，引气驱动加力燃油泵系统相较于常规方案所提取功率降低46.1%，主燃油温度降低27.9%，并且几乎不对发动机性能产生影响。
- 多电发动机 /
- 引气驱动加力泵 /
- 功率提取 /
- 燃油温升 /
- 能耗分析
Abstract:
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.
- more-electric engine /
- air-driven afterburn pump /
- power extraction /
- fuel temperature rise /
- energy consumption analysis

HTML

图 1 引气驱动燃油系统结构图

Figure 1. Air-driven fuel system structure

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图 2 引气驱动燃油系统模型

Figure 2. Air-driven fuel system model

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图 3 发动机转速与推力指令信号

Figure 3. Engine rotational speed and thrust command

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图 4 输入功率

Figure 4. Input power

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图 5 节能效率

Figure 5. Energy-saving efficiency

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图 6 引气与加力燃油流量

Figure 6. Bleed air and afterburner fuel mass flow rate

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图 7 燃油泵功率

Figure 7. Fuel pump power

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图 8 总节约功率

Figure 8. Total power saving

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图 9 燃滑油温度曲线

Figure 9. Temperature curve of fuel and oil

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图 10 功率抽取比和引气比

Figure 10. Relative power takeoff and relative air extract

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图 11 发动机推力响应曲线

Figure 11. Engine thrust response curve

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表 1 空气涡轮设计点参数

Table 1. Design point parameters of air turbine

设计点参数数值

运行速度/（r/min） 40000
流量/（kg/s） 0.7
膨胀比 1.5
效率 0.95

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