重油活塞发动机夹气燃油喷射系统仿真研究

为研究航空重油内燃机燃油系统的雾化问题，进行了重油活塞发动机夹气喷射系统的仿真研究.建立了某型发动机夹气燃油喷射系统的数学物理模型，校核了夹气燃油喷射系统的物理模型，研究了结构、运行及环境参数对燃油系统的特性影响.结果表明稳压腔容积越小，压力波动幅值越大；压差越大，相同喷油脉宽下的燃油流量越大；随燃油温度升高，喷油量略有减小；海拔越高，压力建立越慢.随着海拔高度的增加，气体压力达到600 kPa所需的时间也逐渐增加，研究为燃油系统配机提供了理论依据. 

Simulation Research on Air-Assisted Fuel Injection System for Keorsene Piston Engine

The simulation research on the air-assisted injection system of kerosene piston engine was carried out.Firstly,a mathematical model of air-assisted fuel injection system of an engine was established.Then a physical model of air-assisted fuel injection system was built and checked, and the effect of structure, operation and environmental parameters on the characteristics of the fuel system was analyzed.The results show that the smaller the volume of the pressure stabilizing chamber,the amplitude of pressure fluctuation is the larger.The greater of the pressure difference,the fuel flow is the greater under the same injection pulse width;Oil temperature has little effect on fuel flow.The higher the altitude,the slower the pressure build-up.As the altitude increases,so does the time it takes for the gas pressure to reach 600 kPa.The research provides a theoretical basis for the fuel system matching machine.