Air entraining and pressurizing system for fuel tank of aviation piston engine

The invention discloses a bleed air pressurization system of an aviation piston engine fuel tank, and belongs to the field of engine fuel system design. Comprising a fuel oil storage unit, and the fuel oil storage unit is connected with a crankcase of the aviation piston engine through an air entraining pipeline and connected with the aviation piston engine through an oil supply pipeline. The compressed air source is led out from the engine crankcase of the aviation piston engine and enters the fuel tank to achieve pressurization, so that stable and reliable pressure can be continuously provided for an oil supply pipeline, the pressure of an inlet of a fuel pump in the oil supply pipeline is increased, the cavitation phenomenon is avoided, and it is guaranteed that an oil supply system is in a stable working state for a long time; the flying height of the unmanned aerial vehicle can be increased by about 1-2 kilometers. 本发明公开了一种航空活塞发动机燃油箱引气增压系统，属于发动机燃油系统设计领域。包括燃油存储单元，所述燃油存储单元通过引气管路连接航空活塞发动机的曲轴箱、通过供油管路连接航空活塞发动