Engine fuel oil supply system and fuel oil supply control method

Abstract

The invention discloses an engine fuel oil supply system and a fuel oil supply control method. The engine fuel oil supply system is used for controlling fuel oil supply of an engine and comprises a fuel oil pump and a power unit for driving the fuel oil pump; the oil inlet of the fuel oil pump is connected with a fuel tank; the oil outlet of the fuel oil pump is connected with a combustion chamberof the engine; the power unit is in communication connection with an electronic controller of the engine; a fuel oil metering device for controlling the metering fuel oil entering the combustion chamber is arranged on a pipeline through which the oil outlet of the fuel oil pump is connected with the combustion chamber of the engine; and the fuel oil metering device comprises a high-speed controlvalve for realizing continuous supply or cutoff of the fuel oil as well as a pressure pulsation absorber for enabling the fuel oil to be continuous and stable. The high-speed control valve is in electric signal connection with the electronic controller; the oil inlet of the high-speed control valve is connected with the fuel oil pump; and the oil outlet of the high-speed control valve is connectedwith the pressure pulsation absorber. The oil outlet of the pressure pulsation absorber is connected with the combustion chamber of the engine.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an engine fuel supply system. In addition, the invention also relates to an engine fuel supply control method. Background technique [0002] The fuel system of the aero-engine is used to supply fuel to the combustion chamber of the aero-engine, and is an important part of the aircraft power unit, and the fuel metering device in the engine is the key technology of the engine fuel control system. [0003] Existing typical aero-engine fuel supply system is shown in the attached figure figure 1 As shown, when working, after the fuel pump pumps out fuel from the fuel tank, the fuel enters the engine combustion chamber after being metered by the fuel metering device (including equal pressure valve, constant pressure valve, electro-hydraulic servo valve, metering oil needle and displacement sensor); The electronic controller calculates the target speed according to the engine state co...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an engine fuel supply system and a fuel supply control method to solve the problem that the existing fuel supply system has complex structure, many parts, large mass and volume, complex control methods and control signals, high requirements on fuel cleanliness, Technical problems of poor pollution resistance and low reliability

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