Device and method for simulating influence of plateau environment on spraying characteristic of aviation piston engine

Abstract

The invention discloses a device and a method for simulating the influence of a plateau environment on the spraying characteristic of an aviation piston engine. The device comprises a pressure and temperature adjusting chamber, a vacuum pump communicating with the pressure and temperature adjusting chamber, and an air cylinder, a piston, an oil injection system, a camera system and a control system which are arranged in the pressure and temperature adjusting chamber. The method comprises the specific processes of simulating the movement condition of the piston, spraying oil, shooting the combustion condition of the oil and processing the shot picture. The device is used for observing the fuel atomization effect of the aviation piston type engine taking heavy oil as fuel, so that high-altitude spraying can be simulated on a test bed, and a high-speed camera can be used for shooting the high-altitude spraying to observe the spraying condition of the high-altitude spraying.

Description

technical field [0001] The invention relates to an aero-engine spray test platform, in particular to a device and method for simulating the influence of plateau environment on the spray characteristics of an aero-piston engine. Background technique [0002] The development of aviation piston engines can be roughly divided into two periods. The first period is from the beginning of the first powered flight to the end of World War II. During this period, piston aircraft engines dominated for about 40 years. The second period is from World War II to the present. Today's general aviation piston engines are mainly used in fixed-wing aircraft, rotorcraft and unmanned aerial vehicles. Mainly due to the small power demand of this type of general aviation aircraft, the aviation piston engine is used as the power, which has obvious advantages in economy and practicability. Therefore, the technical application and continuous development of aviation piston engines are necessary. At p...

AI Technical Summary

Problems solved by technology

The advantage of electric energy drive is that the kinetic energy device is light and easy to control, but the endurance has certain defects. It is not suitable for occasions such as power inspection, disaster prevention and relief, and military applications that require high endurance of drones. Therefore, , fuel drive has become the first choice for aero engines

[0004] Considering that aviation piston engines use heavy oil as fuel, if the injection and atomization effect of heavy oil is not good, it will lead to problems such as difficulty in starting, low combustion efficiency, poor combustion stability, excessive emissions, and insufficient power.

Images