Characteristic Analysis on Metering Valves of Fuel Pump Regulators in Aero Engines

doi:10.12068/j.issn.1005-3026.2025.20239049

Abstract

Abstract:

In order to improve the control accuracy and performance quality of fuel pump regulators for an aero engine， a simulation model and an experimental bench of the metering valve were built based on AMESim， and the linear relationship between the engine outlet flow and the valve’s opening degree was analyzed. It was found that the engine outlet flow changes linearly with valve opening， but both the inlet and outlet pressures change slowly initially and then increase greatly when the valve’s opening reaches 60%. Meanwhile， the pressure difference of the inlet and outlet is almost at 0.5 MPa. The simulation results agree well with the experimental results， and the differences of the steady and dynamic states are below 5% and 10%， respectively. Furthermore， the effects of the system’s rotating speed and outlet load on the metering valve performance were also studied， and it was found that the system’s rotating speed plays a large role on the metering valve performance as there can be some pressure overshoot and hydraulic impact when it changes， whereas the outlet load plays a small role on the metering valve performance as there is no pressure overshoot but there is a little lagging.

Key words: aero engine, fuel pump regulator, metering valve, steady characteristics, dynamic characteristics

CLC Number:

Hui-kun CAI, Zhao-yang LI, Yi-bo ZHOU, Chen XU. Characteristic Analysis on Metering Valves of Fuel Pump Regulators in Aero Engines[J]. Journal of Northeastern University(Natural Science), 2025, 46(4): 71-77.

Figures/Tables 13

Fig.1 Metering valve

Table 1 Parameters of the metering valve

参数名称	参数值
腔直径/mm	16
杆直径/mm	8
最小开度/mm	0
最大开度/mm	11
过流面积/mm²	(0.9×x)/1 000
水力直径/mm	1.8×x /(0.9+1 000×x)
预紧力/N	15
弹簧刚度/(N·s^-1)	2.381

Fig.2 Overflow orifice

Fig.3 Fuel combination pump

Fig.4 Braking valve

Fig.5 Simulation model diagram of the fuel pump regulator system

Fig.6 Schematic diagram of the fuel pump regulator test bench piping connections

Table 2 Relationship between engine outlet flow and

活门开度/%	实验流量	仿真流量	相对误差/%
活门开度/%	kg·h^-1	kg·h^-1	相对误差/%
10	66.4	62.4	4.5
20	130.1	134.9	0.7
30	189.5	198.3	4.7
40	248.4	257.2	0.5
50	310.1	320.3	0.3
60	371.9	384.8	0.5
70	430.6	440.9	0.4
80	496.4	495.9	0.1
90	554.8	554.1	0.1
100	591.3	590.2	0.2

Fig.7 Inlet and outlet pressure and pressure difference of the metering valve vs. its opening ratio

Fig.8 Outlet flow rate of the device vs. metering valve opening ratio

Fig.9 Inlet and outlet pressure curves of the metering valve

Fig.10 Inlet and outlet pressure and pressure difference of the metering valve vs. system rotating speed

Fig.11 Inlet and outlet pressures of the metering valve vs. outlet load

References 18

1	Nian F Q， Ma H J， Yang G H. Aero-engine main fuel control loop modeling and identification［C］//2013 25th Chinese Control and Decision Conference （CCDC）. Guiyang， 2013： 5032-5037.
2	Gimadiev A G， Kluev N I， Stadnikv D M. Calculation of static and dynamic characteristics for fuel consumption regulator in aircraft engines， taking into account the hydrodynamic force［J］. The Open Mechanical Engineering Journal， 2014， 8（1）： 431-435.
3	Mojallal A S， Pirkandi J， Mahmoodi M， et al. Optimum design， simulation and test of a new flow control valve with an electronic actuator for turbine engine fuel control system［J］. Flow Measurement and Instrumentation， 2019， 65： 65-77.
4	Lyu L T， Chen Z， Yao B. Development of pump and valves combined hydraulic system for both high tracking precision and high energy efficiency［J］. IEEE Transactions on Industrial Electronics， 2019， 66（9）： 7189-7198.
5	Yang G C， Yao J Y. Nonlinear adaptive output feedback robust control of hydraulic actuators with largely unknown modeling uncertainties［J］. Applied Mathematical Modelling， 2020， 79： 824-842.
6	Zhao X A， Huang B， Chen T R， et al. Numerical simulations and surrogate-based optimization of cavitation performance for an aviation fuel pump ［J］. Journal of Mechanical Science and Technology， 2017， 31（2）：705-716.
7	徐晨. 航空发动机燃油泵调节器特性分析［D］. 厦门：厦门大学， 2021.
	Xu Chen. Characteristic analysis of aero-engine fuel pump regulator［D］. Xiamen： Xiamen University， 2021.
8	Kuhn K D. Using structural topic modeling to identify latent topics and trends in aviation incident reports［J］. Transportation Research Part C： Emerging Technologies， 2018， 87： 105-122.
9	Tudosie A N. Hydro-mechanical fuel flow controller for aircraft jet engines［C］//2017 18th International Carpathian Control Conference （ICCC）. Sinaia， 2017： 343-348.
10	Atkinson G J， Mecrow B C， Jack A G， et al. The analysis of losses in high-power fault-tolerant machines of aerospace applications［J］. IEEE Transactions on Industry Applications， 2006， 42（5）： 1162-1170.
11	Wang K， Du X， Sun X M， et al. Fault simulation and diagnosis of the aero-engine fuel regulator［C］//2018 37th Chinese Control Conference （CCC）. Wuhan， 2018： 5783-5789.
12	Bae B Y， Lee J， Byun Y. Reliability design using FMEA for pressure control regulator of aircraft fuel system ［J］. Journal of the Korean Society for Aviation and Aeronautics，2009， 17（1）： 24-28.
13	Ma S， Tan J G， Ning Y Q， et al. Modeling and simulation of gas turbine starter and fuel control system［C］//2017 36th Chinese Control Conference （CCC）. Dalian， 2017： 2149-2154.
14	Tudosie A N. Jet engine’s rotation speed control based on the fuel’s injection differential pressure’s control ［J］. Annals of the University of Craiova， Electrical Engineering Series，2008（32）： 231-238.
15	Dasgupta K， Karmakar R. Dynamic analysis of pilot operated pressure relief valve ［J］. Simulation Modelling Practice and Theory， 2002， 10： 35-49.
16	洪威. 无压力超调溢流阀设计与特性研究［D］. 成都：西南交通大学， 2013.
	Hong Wei. Design and characteristics of pressure-free overshoot relief valve［D］. Chengdu： Southwest Jiaotong University， 2013.
17	Sorli M， Figliolini G， Pastorelli S. Dynamic model and experimental investigation of a pneumatic proportional pressure valve［J］. IEEE/ASME Transactions on Mechatronics， 2004， 9（1）： 78-86.
18	王华威，王曦，李志鹏，等. 定压活门稳定性定量分析［J］. 航空动力学报， 2015， 30（3）： 754-761.
	Wang Hua-wei， Wang Xi， Li Zhi-peng， et al. Quantitative analysis on constant pressure valve stability［J］. Journal of Aerospace Power， 2015， 30（3）： 754-761.

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