航煤空气喷射时间间隔及压力对转子发动机燃烧性能的影响

余田锋; 刘伟; 谭先见; 张泽奇; 杜洋; 何光宇

doi:10.7652/xjtuxb202611011

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航煤空气喷射时间间隔及压力对转子发动机燃烧性能的影响

更新时间：2026-11-09

- 航煤空气喷射时间间隔及压力对转子发动机燃烧性能的影响
- Effects of Aviation Kerosene-Air Inj ection Interval and Pressure on the Combustion Performance of Rotary Engines
- 西安交通大学学报 2026年60卷第11期页码：121-132
- 作者机构：
  
  西安交通大学机械工程学院，710049，西安
  湖南南方通用航空发动机有限公司，412002，湖南株洲
- 作者简介：
  
  余田锋（2004—），男，硕士生；
  杜洋（通信作者），男，副教授，硕士生导师。
- 基金信息：
  
  “慧眼行动”资助项目(F44AF60D);陕西省博士后科学基金资助项目(2023BSHEDZZ73)
- DOI：10.7652/xjtuxb202611011
  中图分类号： TK45
- 收稿：2026-04-28，
  
  网络首发：2026-07-16，
  
  纸质出版：2026-11-10
- 稿件说明：
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余田锋, 刘伟, 谭先见, 等. 航煤空气喷射时间间隔及压力对转子发动机燃烧性能的影响[J/OL]. 西安交通大学学报,2026,60 (11):121-132. https://doi.org/10.7652/xjtuxb202611011.

YU Tianfeng, LIU Wei, TAN Xianjian, et al. Effects of Aviation Kerosene-Air Inj ection Interval and Pressure on the Combustion Performance of Rotary Engines[J/OL]. Journal of Xi'an Jiaotong University,2026,60 (11):121-132. https://doi.org/10.7652/xjtuxb202611011.
余田锋, 刘伟, 谭先见, 等. 航煤空气喷射时间间隔及压力对转子发动机燃烧性能的影响[J/OL]. 西安交通大学学报,2026,60 (11):121-132. https://doi.org/10.7652/xjtuxb202611011. DOI：

YU Tianfeng, LIU Wei, TAN Xianjian, et al. Effects of Aviation Kerosene-Air Inj ection Interval and Pressure on the Combustion Performance of Rotary Engines[J/OL]. Journal of Xi'an Jiaotong University,2026,60 (11):121-132. https://doi.org/10.7652/xjtuxb202611011. DOI：

摘要

为解决航空煤油（航煤）在椭圆转子发动机中的雾化难题，厘清空气辅助喷射策略对发动机燃烧性能的调控机制，将空气辅助喷射技术引入椭圆转子发动机，基于Converge平台建立包含进排气道、燃烧室及空气辅助喷射流道的一体化三维计算流体动力学模型，以航煤-空气喷射时间间隔角（20°～60°曲轴转角）和空气喷射压力（4.0～6.0 bar）为变量，探究了两种参数对缸内燃油雾化、混合气形成、燃烧过程、热力性能及污染物排放的影响规律。研究结果表明：随着航煤-空气喷射时间间隔增大，缸内燃料雾化质量先提高后降低，喷射时间间隔角为30°时，指示功率达峰值15.8 kW，但因燃烧效率偏低，指示热效率仅为39.1 %；喷射时间间隔角增至60°，进入缸内的燃油质量降低，但热效率升至43.4%；提高空气喷射压力可增强缸内湍流动能，改善雾化效果并加速火焰传播，当空气喷射压力从4.0 bar升至6.0 bar时，指示功率与热效率分别提升29.3%和18.9%，碳氢化合物排放质量降低70.9%，氮氧化物排放质量增加781.4%。该研究可为椭圆转子发动机喷射策略的多参数协同优化设计提供理论依据。

Abstract

To address the atomization challenges of aviation kerosene in elliptical rotary engines and to clarify the mechanism by which the air-assisted inj ection strategy regulates their combustion performance

air-assisted inj ection technology was introduced into these engines.A three-dimensional integrated computational fluid dynamics model

incorporating the intake and exhaust ports

the combustion chamber

and the air-assisted inj ection flow passage

was established based on the Converge platform.Using the aviation kerosene-air inj ection interval angle (20°—60°crank angle) and the air injection pressure (4.0—6.0 bar) as variables

the effects of these two parameters on in-cylinder fuel atomization

mixture formation

combustion process

thermal performance

and pollutant emissions were investigated.The results indicate that as the aviation kerosene-air inj ection interval time increases

the in-cylinder fuel atomization mass first improves and then deteriorates.At an injection interval of 30°crank angle

the indicated power reaches a peak of 15.8 kW.However

due to the relatively low combustion efficiency

the indicated thermal efficiency is only 39.1 %.When the inj ection interval is increased to 60°crank angle

the mass of fuel entering the cylinder decreases

but the thermal efficiency rises to 43.4%. Increasing the air inj ection pressure enhances the in-cylinder turbulent kinetic energy

improves atomization quality

and accelerates flame propagation.As the air inj ection pressure increases from 4.0 bar to 6.0 bar

the indicated power and thermal efficiency increase by 29.3% and 18.9 %

respectively；hydrocarbon emission is reduced by 70.9%

while nitrogen oxide emission increases by 781.4%. This study can provide a theoretical basis for the multi-parameter coordinated optimization design of inj ection strategies for elliptical rotary engines.

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