燃油喷嘴主要性能参数的影响因素及调试技术

Influencing Factor and Debugging Technology of Major Performance Parameter for Fuel Nozzle

燃油喷嘴是航空发动机燃烧室的一个主要元件,它的主要功用是按照发动机不同的工作状态,供给燃烧室合适数量的、具有良好雾化质量的燃油。喷嘴的供油量是保证发动机推力要求、影响燃烧效率和性能的一个主要指标。根据燃油喷嘴的不同结构,对影响发动机燃烧室性能的流量、喷雾锥角和分布不均匀度等参数进行理论分析,并结合实际调试情况进行验证,解决了燃油喷嘴性能试验时流量、喷雾锥角和分布不均匀度调试困难的技术瓶颈,具有较大的指导意义和广阔的应用前景。

Fuel nozzle is a major component of engine combustion chamber,the main function of which is to supply fuel with suitable quantity and good atomization quality according with different working conditions.The fuel supply is the key parameter which could ensure the requirement of engine thrust and affect the efficiency of combustion chamber and the performance of engine.In this paper,the theoretical analysis is carried out for the parameters of flow,nozzle taper and uneven distribution which can affect the performance debugging of engine combustion chamber,based on the different structures of fuel nozzle,and the analysis is verified in accord with testing results.The technological bottlenecks of debugging difficulty of flow,nozzle taper and uneven distribution are solved in fuel nozzle performance testing.The study results have significant guidance function and wide application prospects.