基于OMEGA理论的燃油计量装置污染卡滞特性分析

李文强; 王彬; 杨军杰; 李柯柯; 叶志锋

doi:10.13700/j.bh.1001-5965.2023.0510

基于OMEGA理论的燃油计量装置污染卡滞特性分析

doi: 10.13700/j.bh.1001-5965.2023.0510

1.
南京麻豆精品秘国产传媒能源与动力学院，南京 210016
2.
中国航发西安动力控制科技有限公司，西安 710077

基金项目:

国家科技重大专项(J2019-Ⅴ-0016-0111)

详细信息

通讯作者:
E-mail：binwang@nuaa.edu.cn

中图分类号: V233.2⁺4
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出版历程
- 收稿日期: 2023-08-04
- 录用日期: 2023-08-25
- 网络出版日期: 2023-10-23
- 整期出版日期: 2025-10-31

Contamination lock characteristics analysis of fuel metering unit based on OMEGA theory

1.
College of Energy and Power Engineering，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China
2.
Xi’an Aero-Engine Controls Technology Company Limited，Aero Engine Corporation of China，Xi’an 710077，China

Funds:

National Science and Technology Major Project (J2019-Ⅴ-0016-0111)

More Information

Corresponding author: E-mail：binwang@nuaa.edu.cn

摘要

摘要:
为获得燃油中污染颗粒对燃油计量装置(FMU)工作特性影响的定量规律，并探索一种面向非标燃油部件污染卡滞特性的分析方法，基于OMEGA理论将污染颗粒对燃油部件的作用转化为卡滞力，建立了燃油污染工况下燃油部件和装置的动力学模型。开展了固体污染度等级为GJB 420B-7/8/9级时FMU的工作特性仿真，获得了各等级燃油对其关键部件性能的影响规律。结果表明：所建电液伺服阀污染卡滞模型获得的负载流量响应与标准电液伺服阀污染卡滞模型的结果基本吻合，GJB 420B-9级燃油中计量活门最大卡滞力约140 N，响应时间为无污染时的2倍以上，计量流量最大相对误差增加4倍以上。所提方法可为非标燃油部件和系统的污染卡滞建模提供参考。
- OMEGA理论 /
- 燃油计量装置 /
- 卡滞力 /
- 工作特性 /
- 燃油等级
Abstract:
To quantify the impact of contamination particles on the operational characteristics of a fuel metering unit (FMU) and to explore an analytical method for the contamination lock characteristics of non-standard fuel components, OMEGA theory was applied to translate the effect of these particles into lock forces on fuel components. A dynamic model for the components and units under fuel contamination conditions was developed. The operational characteristics of an FMU using class GJB 420B-7/8/9 fuel were simulated, and the effects of each fuel class on key components were analyzed. The results show that the load flow response from the servo-valve contamination lock model aligns closely with the standard servo-valve lock model. The maximum lock force of the metering valve reaches 140 N for class GJB 420B-9 fuel. The response time is more than twice as long as that under non-contaminated conditions, and the maximum relative error in the metered fuel increases by a factor of more than four. The method proposed in this paper provides a valuable reference for modeling contamination lock effects in non-standard fuel components and systems.
- OMEGA theory /
- fuel metering unit /
- lock force /
- operational characteristic /
- fuel class

HTML全文

图 1 FMU原理

Figure 1. FMU schematic diagram

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图 2 FMU污染卡滞仿真方法

Figure 2. Method of FMU contamination lock simulation

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图 3 电液伺服阀污染卡滞模型

Figure 3. Contamination lock model of electrohydraulic servo-valve

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图 4 电液伺服阀负载流量特性

Figure 4. Load flow characteristics of electrohydraulic servo-valve

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图 5 FMU污染卡滞联合仿真模型

Figure 5. FMU contamination lock co-simulation model

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图 6 GJB 420B-9级燃油时计量活门位移响应

Figure 6. Displacement response of metering valve with class GJB 420B-9 fuel

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图 7 GJB 420B-9级燃油时压差调节组件响应

Figure 7. Response of differential pressure regulating assembly with class GJB 420B-9 fuel

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图 8 计量后燃油流量

Figure 8. Metered fuel flow rate

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图 9 活门卡滞力

Figure 9. Valve lock force

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图 10 不同等级燃油时FMU动态性能参数

Figure 10. Dynamic performance parameters of FMU with different fuel classes

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表 1 GJB 420B-7/8/9级燃油污染颗粒浓度

Table 1. Particle concentration of pollutants in class GJB 420B-7/8/9 fuel

污染颗粒尺度/μm	污染颗粒浓度/（个·(100 mL)⁻¹）
污染颗粒尺度/μm	GJB 420B-7	GJB 420B-8	GJB 420B-9
>1	100000	200000	400000
>5	38900	77900	156000
>15	6920	13900	27700
>25	1200	2450	4900
>50	212	424	848
>100	32	64	128

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表 2 污染卡滞敏感度

Table 2. Contamination lock sensitivity

污染颗粒尺度/μm	卡滞敏感度/(N·粒⁻¹)
0～5	4.56486×10⁻⁸
5～10	1.27656×10⁻⁷
10～20	3.30282×10⁻⁷
20～30	1.22369×10⁻⁵
30～40	1.15079×10⁻⁵
40～50	1.50553×10⁻⁶
50～60	3.33644×10⁻⁶
60～70	0
70～80	0

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