The invention discloses an engine air-entraining temperature and pressure regulating method, and belongs to the technical field of aircraft engines. A lower-level air-entraining connector and a higher-level air-entraining connector are constructed at different pressure levels of an engine, an air-entraining pipeline is led out from each of the two connectors, and according to air-entraining requirements of an aircraft in different states, the flow and pressure of mixed air finally entering an air premixer are regulated by controlling the opening and closing degree of pressure regulating valveson the two air-entraining pipelines correspondingly; and the mixed air subjected to pressure regulating enters a precooler for temperature regulating, cold fuel oil is introduced into the precooler to precool the mixed air, and when the fuel oil temperature is too high or the fuel oil amount is insufficient, ram air introduced from the outside of the aircraft is introduced into the precooler to precool the high-temperature air. By adopting the temperature and pressure regulating method, the air-entraining amount of the over-temperature and over-pressure gas can be reduced, the air-entrainingamount of the ram air is reduced by adopting a fuel oil-ram air cooling mode, the combustion efficiency of the fuel oil is improved, and the aircraft performance is improved.
本发明公开了一种发动机引气调温调压方法,属于飞机发动机技术领域。在发动机的不同压力级构造较低级引气接口和较高级引气接口,从这两个接口各引出一条引气管路,根据飞机不同状态时的引气需求,分别控制这两条引气管路上压力调节活门的开合程度来调节最终进入空气预混器中的混合引气的流量和压力;经过调压后的混合引气进入预冷器中调温,预冷器中通入冷燃油对混合引气进行预冷,燃油油温过热或燃油量不足时,往预冷器中通入从飞机外引入的冲压空气对高温引气进行预冷。采用本发明所述的调温调压方法可降低超温超压气体的引气量,采用燃油‑冲压空气冷却的方式减少从冲压空气的引气量,提高燃油的燃烧效率,提升飞机性能。
Engine air-entraining temperature and pressure regulating method
一种发动机引气调温调压方法
2021-01-05
Patent
Electronic Resource
Chinese
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