某航空活塞发动机机械增压器旁通阀门启闭特性分析  

Analysis of Bypass Valve Opening and Closing Characteristics for Supercharge in Aviation Piston Engine

作　　者：潘钟键 邹湘伏 周志东[1] Pan Zhongjian;Zou Xiangfu;Zhou Zhidong(National Certified Enterprise’s Technical Center, Sunward Intelligent Equipment Co., Ltd., Changsha 410100, China;College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China)

机构地区：[1]山河智能装备股份有限公司国家级企业技术中心,长沙410100 [2]中南大学机电工程学院,长沙410083

出　　处：《航空工程进展》2017年第4期438-443,共6页Advances in Aeronautical Science and Engineering

基　　金：湖南省科技厅重点研发计划国际与区域科技合作项目(2016WK2032)

摘　　要：机械增压器现已在汽车发动机上得到了广泛应用,但其在航空活塞发动机上的应用和研究较少。分析机械增压器的工作过程,在簧片阀模型的基础上,考虑旁通阀门启闭压力与涡轮增压器压比之间的线性关系并对其建模;搭建某型航空活塞发动机GT-POWER数值仿真模型并进行实验验证,在整机模型的基础上,研究不同转速下通过旁通阀门的质量流率以及不同高度下旁通阀门的通流面积。结果表明:巡航工况下,海拔2 680m时阀门关闭;起飞工况下,海拔3 000m阀门关闭,该结果可为发动机实际高空飞行提供理论支持。Supercharger is widely used in vehicle engines because of its good response characteristics while the application in aircraft piston engines is still very rare.The working process of the supercharger is analyzed,and considering the linear relationship between the opening and closing pressure of the bypass valve and the turbocharger pressure ratio,the supercharger is modeled on the basis of the reed valve model.The GT POWER numerical simulation model of a certain type of air piston engine is established and verified.Based on the whole model,the mass flow rate of the bypass valve and the flow area of the bypass valve at different heights are studied.The results show that under the cruise condition,the valve is closed at2680m above sea level,and the valve is closed at3000m above sea level under taking off condition,which provides the theoretical basis for the actual high altitude flight of the engine.

关 键 词：航空活塞发动机 机械增压器 旁通阀门 质量流率 通流面积 

分 类 号：V234[航空宇航科学与技术—航空宇航推进理论与工程]