A control method and device for aero-engine encountering accelerated fuel supply

An aero-engine and fuel supply control technology, which is applied in the direction of engine components, fuel control of turbine/propulsion device, charging system, etc., to achieve the effects of reducing heat load, expanding stability control, reducing work intensity and life loss

Active Publication Date: 2021-10-22
AECC SHENYANG ENGINE RES INST
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] At present, aero-engines are controlled according to the conventional acceleration control law when encountering acceleration actions, and there is a risk of surge

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  • A control method and device for aero-engine encountering accelerated fuel supply
  • A control method and device for aero-engine encountering accelerated fuel supply

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Embodiment Construction

[0033] In order to make the objectives, technical solutions and advantages of the implementation of the application clearer, the technical solutions in the implementation modes of the application will be described in more detail below with reference to the drawings in the implementation modes 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 present 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 implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application. Embodiments of the pr...

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Abstract

The application provides a control method and device for an aero-engine encountering accelerated fuel supply, belonging to the technical field of aero-engine fuel supply control. The method includes determining that the engine encounter acceleration condition is established; correcting the regular acceleration fuel supply law to obtain the encounter acceleration oil-gas ratio fuel supply control law; Carry out fuel supply regularly, and in the subsequent second set time period, change the encountered accelerated oil-gas ratio fuel supply control law into a conventional accelerated fuel supply law, and perform fuel supply according to the real-time change process of the accelerated fuel supply law. The method ensures the stability of the engine within the full envelope, reduces the load during the acceleration process during the life of the engine, and is beneficial to reducing the life loss of the engine.

Description

technical field [0001] The present application belongs to the technical field of fuel supply control for aero-engines, and in particular relates to a method and device for controlling fuel supply when an aero-engine encounters accelerated fuel supply. Background technique [0002] Encounter acceleration is a rapid throttle operation during aircraft operation. In this operation process, the engine first works in a high-power state, and the engine may be in a fully heated state, then decelerates (the throttle lever is pulled down for no more than 1 second) to approach the idle speed, and then accelerates rapidly to a high-power state. [0003] In the process of encountering acceleration, the engine decelerates first, the engine speed decreases, the air or gas temperature in each section drops, the air / gas temperature will be lower than the temperature of the engine components, and the components will heat the air / gas. When the engine accelerates instantaneously, the heating o...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C9/44
CPCF02C9/44
Inventor 郭海红韩文俊梁彩云施磊王军李兆红
Owner AECC SHENYANG ENGINE RES INST
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