Abstract: The electronically controlled gasoline injection can improve the engine performance effectively, especially for the engine of the mini-unmanned air vehicle(Mini-UAV), which can realize the real-time of control of all the engine parameters during the process of flying and make the engine performance go up to a new stage and furthermore promote the development of UAV technology. Based on experiment research, the paper introduces the initial results of the application research on petrol spurt controlled electronically to the UAV's engine, and then analyzes how the gasoline injection controlled electronically improves the engine performance and also emphasizes its importance of the application to the Mini-UAV's Engine.

Key words: mini-unmanned air vehicle, two-stroke engine, gasoline injection, air fuel ratio, function experiment