某航空活塞发动机进气系统优化设计

崔华盛; 赵振峰; 王恩华; 杨琼瑶; 刘宇航

doi:10.13224/j.cnki.jasp.2019.09.024

某航空活塞发动机进气系统优化设计

doi: 10.13224/j.cnki.jasp.2019.09.024

1.
北京理工大学机械与车辆学院,北京 100081
2.
山西柴油机工业有限责任公司,山西大同 037000
3.
重庆宗申动力机械股份有限公司重庆宗申航空发动机制造有限公司,重庆 400054

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出版历程
- 收稿日期: 2019-02-17
- 刊出日期: 2019-09-28

Intake system optimization study and design for an aircraft piston engine

摘要

摘要: 针对某型航空活塞发动机在节气门100%开度、5 000 r/min工况下各缸排温差异较大的现象,分别建立一维性能仿真模型和三维CFD模型,通过联合仿真分析进气系统内部流动特点,并找出导致排温差异的原因。提出了一种进气系统,计算结果表明:采用改进后的进气系统,在5 000 r/min、节气门100%开度下发动机整机进气不均匀性由原来的20% 降低 6%;当转速高于5 000 r/min时,相比于原机,采用该进气系统后各缸进气量均有所增加,在发动机转速5 500 r/min,外特性工况下平均循环进气量增加19%,单缸循环进气量最大增加34.1%,最小增加12.9%。
- 航空活塞发动机 /
- 进气不均匀性 /
- 进气系统构造 /
- 联合仿真 /
- 进气系统优化
Abstract: A one-dimensional thermal dynamic model and three dimensional CFD model about the intake pipe for a specific aero-piston engine were established respectively for analyzing intake uniformity. These models verified the phenomenon about intake uniformity when the engine worked under external characteristic condition and figured out the causality of this phenomenon. An intake system was designed. The intake uniformity phenomenon could be improved by taking this intake system. The calculation results showed that: by adopting the new intake system, the engine's intake air non-uniformity decreased from 20% to 6% when the engine was at 5 000 r/min. By using this intake system, the average air intake quality increased by 19% when the engine was at 5 500 r/min, the maximum air intake quality increased by 34.1% and the minimum by 12.9%.
- aircraft piston engine /
- intake uniformity /
- intake system structure /
- collaborative simulation /
- intake system optimization

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参考文献(17)

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