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民用航空发动机需要满足国际民航组织(ICAO)发布的排放标准的要求,因此低排放燃烧室的研制是发动机成功研制的关键。TeLESSⅡ低排放燃烧室方案研究了在主燃级空气流动和燃油喷射模式不变情况下,成膜空气雾化和离心喷射空气雾化两类不同的预燃级空气流动和雾化组织模式在不同工况时对排放趋势变化的影响。结果表明小工况时不同预燃级的排放及燃烧效率变化趋势方向不同。大工况时两者的排放受燃油分级比影响变化趋势不同,而燃烧效率变化趋势是一致的。这说明预燃级和主燃级的组合设计改变了燃烧性能。
Civil aviation engines need to meet the emission standards promulgated by the International Civil Aviation Organization (ICAO). Therefore, the development of low-emission combustion chambers is the key to successful engine development. TeLESSⅡlow-emission combustor scheme studied the different pre-combustion air-flow and atomization modes of film-forming air atomization and centrifugal air-atomization under the same main-air-stage air flow and fuel injection mode Impact of changes in emission trends on operating conditions. The results show that the different pre-combustion stage emissions and combustion efficiency trends in different directions. The emission of the two under different operating conditions is different with the change of fuel classification ratio, while the change trend of combustion efficiency is consistent. This shows that the combined design of pre-combustion and main combustion changes combustion performance.