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A Correction Method of Fuel Flow of Gas Turbine Engine

A fuel flow and gas turbine technology, which is used in gas turbine engine testing, jet engine testing, measuring flow/mass flow, etc., and can solve the problems of measurement accuracy impact, inaccuracy, and large flow test fluctuations.

Active Publication Date: 2021-04-13
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, this method has the phenomenon that the flow test fluctuates greatly, and the measurement accuracy is affected by electronic devices, resulting in inaccurate phenomena.

Method used

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  • A Correction Method of Fuel Flow of Gas Turbine Engine
  • A Correction Method of Fuel Flow of Gas Turbine Engine
  • A Correction Method of Fuel Flow of Gas Turbine Engine

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Embodiment Construction

[0088] The following will refer to the attached Figure 1 to Figure 2(b) Specific embodiments of the present disclosure are described in detail. Although specific embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0089] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "com...

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Abstract

The disclosure discloses a gas turbine engine fuel flow measurement and correction method, including: constructing a dynamic physical model of the gas turbine engine, and obtaining the first fan speed signal N output by the dynamic physical model 1m ;Measure the main fuel flow W of the gas turbine engine f and the second fan speed signal N 1a ; Find N 1m with N 1a Deviation ΔN 1 ; Using the feedback correction algorithm, according to the deviation ΔN 1 Obtain the fuel correction amount ΔW f ; Set the fuel correction amount ΔW f and main fuel flow W f superimposed to get the corrected main fuel flow W fr , and input the dynamic physical model; repeat steps 1‑5, when the deviation ΔN 1 with N 1a The ratio of is less than the threshold ε, that is, ΔN 1 / N 1a When <ε, the calibration is completed. The disclosure can avoid the gas turbine engine state parameter estimation deviation caused by the measurement error of the fuel flow under complex time-varying conditions, and is beneficial to real-time prediction of the performance state of the gas turbine engine.

Description

technical field [0001] The disclosure belongs to the field of gas turbine engine fuel oil measurement, in particular to a method for correcting gas turbine engine fuel flow. Background technique [0002] In the design of aeroengines, fuel flow is a very important parameter, which can reflect the actual fuel consumption rate of the engine, the degree of engine performance attenuation, and the health of the engine. It is the main parameter to evaluate the steady-state performance of the engine. [0003] The traditional fuel flow measurement method is to calculate the actual fuel flow by measuring the opening of the fuel metering valve. However, this method has the phenomenon that the flow test fluctuates greatly, and the measurement accuracy is affected by electronic devices, resulting in inaccurate phenomena. Contents of the invention [0004] In view of the deficiencies in the prior art, the purpose of the present disclosure is to provide a method for correcting the fuel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/14G01F1/00
CPCG01F1/00G01M15/14
Inventor 宋志平刘金鑫徐茂俊李明李应红陈雪峰
Owner XI AN JIAOTONG UNIV
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