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借助发动机性能模型,研究了发动机性能退化对氮氧化物(NOx)、一氧化碳(CO)、未燃碳氢化合物(UHC)与碳烟颗粒(Soot)排放的影响,提出了基于飞行参数与发动机性能模型的污染物排放总量估算方法。利用ICAO排放数据拟合得到发动机地面状态下的参考排放指数,利用相对法模型得到飞行状态下的排放指数,根据航班飞行参数和发动机性能模型估算航班污染物排放总量。研究结果表明:性能退化对污染物的排放指数影响较大,仅考虑进对燃油消耗量的影响,性能退化对NOx排放总量的影响较小,但会引起CO、UHC与Soot排放总量的上升。执行中短途航班的双发民航飞机的NOx排放总量最高约为100kg,其次为CO,约为20kg,而UHC和Soot的排放总量较低,小于1kg。老化发动机的CO、UHC与Soot的排放总量增加约为10%,而NOx排放总量增加约为2%。
Based on the engine performance model, the influence of engine performance degradation on NOx, CO, UHC and Soot emission was studied. The effects of engine performance degradation on engine performance Estimation of the total pollutant emission of the model. The ICAO emission data is used to fit the reference discharge index under the ground condition of the engine. The relative law model is used to obtain the emission index under the flight condition. The total pollutant emissions are estimated based on the flight parameters and the engine performance model. The results show that the performance degradation has a great influence on the pollutant emission index, and only the impact on the fuel consumption is considered. The performance degradation has little effect on the total amount of NOx emissions, but will cause the total emissions of CO, UHC and Soot rise. The total amount of NOx emissions from double-deck civil aircraft flying short-haul flights is about 100 kg, followed by CO, about 20 kg, while the total emissions of UHC and Soot are lower, less than 1 kg. The total emissions of CO, UHC and Soot from aged engines increased by about 10% while the total NOx emissions increased by about 2%.