应用于低污染燃烧的1种燃油分配技术研究

针对民用航空发动机低污染排放要求日益严格的现状及低污染燃烧技术发展的需要,研究了1种应用于低污染燃烧领域的燃油分配技术.阐述了该燃油分配系统的结构,包括燃油系统和燃油分配器的结构及控制回路的结构和原理;利用AMESim软件对该系统进行了数值建模仿真,通过分析燃油分配器分级活门打开与关闭2种情况下燃烧室预燃区和主燃区燃油分配量与燃油分配器分配活门开度的关系,得出了燃烧室预燃区和主燃区燃油的分配关系曲线;根据仿真分析结果,从发动机控制回路出发,引出了燃油分配的控制逻辑.研究结果表明：该燃油分配系统能够对进入发动机燃烧室预燃区和主燃区的燃油进行精确的分配控制,满足低污染燃烧技术对燃油分配的要求.

Investigation on a Fuel Distribution Technology for Low

Aiming at the status of strict emission standards for civil aeroengine and the development requirement of low emission combustion, a fuel distribution technique was introduced to be applied on low emission combustion field. The structure of the fuel distribution system was described, including structures of the fuel system and the fuel distributor, the principle and structure of the fuel control loop. The system was modeled and simulated by AMESim software. The trends of fuel flow distribution into the pilot combustion zone and the main combustion zone was given by analyzing the relation ship between fuel flow of the two combustion zones and the opening level of the fuel split valve while the fuel stage valve was either open or closed. The control logic of fuel distribution was developed from the engine control loop based on the analysis result. The result shows that the fuel spilt system is fully capable of controlling the fuel flows into the pilot combustion zone and the main combustion zone, and the low emission combustion requirement is fully satisfied