航空活塞发动机两级增压匹配方法

通过对某单级增压活塞发动机的研究,将两级增压应用于该机型,采用压气机串联、涡轮并联的布置方案,并用GT-Power对发动机进行建模.按等流量模式对两级涡轮增压进行匹配,并对地面至高空10km飞机全飞行高度的运行工况进行了预测.对废气放气阀调节流量进行了计算.结果显示涡轮和压气机在全高度都运行在高效率区内,为两级增压系统的研制提供了良好的基础. 

Matching of two-stage supercharging aircraft piston engines

Through the single stage supercharging piston engine’s research,two-stage supercharging applications in this type were applied.The air compressor series and the turbine wheel parallel scheme of arrangement were used to establish the modeling of the engine with GT-Power.According to same-flow method,two-stage supercharger matching was conducted and the waste gate valve flow regulation was calculated.The result demonstrates the turbine wheel and the air compressor in the overall height moves in the high efficiency area,and two levels of supercharging system’s developments have provided the good foundation.