Device and method for testing upper air performance of aircraft engine fuel oil system

Abstract

The invention discloses an aeroengine fuel system altitude performance testing unit and a test method thereof. The testing unit comprises an equipment cabinet, a control computer, a display instrument, a high altitude box, a fuel tank, an oil pipeline, a vacuum pump package and various valves, wherein, the inner part of the high altitude box is provided with a testing oil fuel pump which is connected with the fuel tank through the oil pipeline inside the equipment cabinet, the fuel tank has a structure with low temperature resistance and atmospheric depression resistance, can simulate the high altitude working environment of the fuel system of the aeroengine. The test method utilizes the fuel tank capable of simulating the atmospheric depression and the low temperature of the high altitude and a high altitude box capable of simulating the atmospheric depression, adopts the pipeline and the valves to adjust the oil inlet pressure and the oil return pressure, and uses a flowmeter, a thermometer and a pressure gauge to read the parameter values. The test of altitude simulations of an oil supply system of an electronic oil fuel pump of an aircraft piston engine can be performed by the method.

Description

technical field [0001] The invention belongs to the technical field of aero-engines, and relates to a performance test technology of an aero-engine fuel system, in particular to a high-altitude performance test device and a test method applied to the fuel system of a piston engine in an aero-engine. Background technique [0002] The working principle of the aviation piston engine is the same as that of the ground vehicle internal combustion engine. After the fuel is burned in the cylinder, the piston is driven to do work. The aviation piston engine works according to the characteristics of the propeller, and its working characteristics change with the change of altitude. [0003] The aviation piston engine fuel system is to ensure that the fuel with a certain pressure is provided to the engine under various working conditions. As the flight altitude increases, the working efficiency of the fuel system decreases due to the reduction of ambient pressure and temperature, and th...

AI Technical Summary

Problems solved by technology

The existing fuel oil pump test device can only simulate the working characteristics of the fuel pump when the engine is in various working conditions on the ground, but cannot simulate the changes in the characteristics of the fuel supply system due to the decrease in fuel inlet pressure and temperature. Aviation piston engines are mainly used at high altitudes, so Obtaining the high-altitude characteristics of the fuel system through ground test simulation is the key to ensuring the reliable operation of the engine

Images