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Method for correcting transient fuel supply of main combustion chamber of aero-engine

A technology for aero-engines and main combustion chambers, applied in data processing applications, predictions, design optimization/simulation, etc., can solve the problem of affecting the transient performance of the engine, not considering the fuel supply follow-up deviation, and the fuel supply volume failing to meet design expectations and other issues to achieve the effect of reducing impact and improving compliance

Active Publication Date: 2021-08-20
AECC SHENYANG ENGINE RES INST
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Problems solved by technology

In the transient process of an aero-engine, the change rate of the fuel supply is a relatively strict requirement for the control system. At the same time, due to factors such as the dispersion of accessories and performance attenuation, the control system often has problems with the execution of the transient fuel supply, which in turn affects the engine's transient performance. state performance
[0003] The current transient fuel supply of the main combustion chamber is mainly designed and implemented according to the theoretical fuel supply, without considering the fuel supply correction method of the actual fuel supply following deviation. Under certain conditions, such as control accessory matching, accessory performance attenuation, etc. The actual fuel supply cannot meet the design expectation, which affects the transient performance of the engine

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  • Method for correcting transient fuel supply of main combustion chamber of aero-engine

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Embodiment Construction

[0028] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application. Embodiments of the present application will be described in detail below in conjunction with th...

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Abstract

The invention belongs to the field of aero-engine oil supply, and particularly relates to a method for correcting transient fuel supply of a main combustion chamber of an aero-engine. The method comprises the steps that: 1, the pre-corrected oil supply amount of the actual oil supply deviation in the nth control period is obtained; 2, the design oil supply amount calculated by the theoretical oil supply condition of the (n+1)th control period is obtained; and 3, the oil supply amount of the main combustion chamber in the (n+1)th control period is calculated. According to the method, correction is conducted on the technology of designing the expected fuel supply rule through the deviation of the expected given fuel supply and the actual achievement of the main combustion chamber of a control system, the influence of the actual fuel supply follow-up deviation on the engine transient performance is reduced, and the conformity of transient performance and design indexes is improved.

Description

technical field [0001] The application belongs to the field of aero-engine fuel supply, and in particular relates to a method for correcting transient fuel supply of a main combustion chamber of an aero-engine. Background technique [0002] The change of the working state of the aero-engine needs to be realized by adjusting the fuel supply of the main combustion chamber. The transient fuel supply law is generally designed according to the theoretical design of the engine’s transient working line, and the given transient fuel supply is obtained, and realized by controlling the accessory fuel pump. Transient fueling is performed. In the actual use of the engine, the transient performance generally has a time index requirement, so it is very important whether the actual transient fuel supply of the control system can be consistent with the expected fuel supply of the theoretical design. In the transient process of an aero-engine, the change rate of the fuel supply is a relativ...

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Application Information

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IPC IPC(8): G06F30/20G06Q10/04
CPCG06F30/20G06Q10/04
Inventor 阎巍李泳凡施磊赵肃万东凯王阳康忱
Owner AECC SHENYANG ENGINE RES INST
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