| 摘要: |
| 为解决发动机点火包线小于飞行包线的实际问题，提升射流能量及射流稳定性，设计了一种预燃式等离子体射流点火器，实验研究了放电特性和射流特性。结果表明，预燃式等离子体射流点火器与空气等离子体射流点火器相比，在提升射流能量降低电源功率方面有着较大的优势，电流相同时通入甲烷在较大流量时可减小驱动电源功率，总流量为44L/min时，减幅可达14.99%；同时预燃式等离子体射流较空气等离子体射流稳定，且射流长度增加，扩大了点火面积，有利于点火。 |
| 关键词: 等离子体 射流 点火器 放电 功率特性 射流特性 |
| DOI：10.13675/j.cnki.tjjs.200026 |
| 分类号:V233.3 |
| 基金项目:国家自然科学基金（51776223；91741112）。 |
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| Experimental Investigation on Working Characteristics of Pre-Combustion Plasma Jet Ignitor |
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JIANG Lu-yun1, YU Jin-lu1, JIANG Yong-jian2, HUANG Dan-qing3, WANG Si-bo1, CHEN Zhao1, HU Ya-ji1
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1.College of Aeronautics Engineering，Air Force Engineering University，Xi’an 710038，China;2.Institute of Army Aviation，Beijing 101121，China;3.95965 Armed Forces，Hengshui 253800，China
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| Abstract: |
| In order to solve the practical problem that the ignition envelope of the engine is narrower than the flight envelope and improve the jet energy and stability， a kind of pre-combustion plasma jet ignitor was designed. The discharge characteristics and jet characteristics were investigated experimentally. The results show that compared with the air plasma jet ignitor， the pre-combustion plasma jet ignitor has a greater advantage in improving the jet energy and reducing the power supply. When the current is the same， the driving power can be reduced when methane is introduced in a large flow rate. When the total flow rate is 44L/min， the reduction can reach 14.99%. At the same time， the pre-combustion plasma jet is more stable than the air plasma jet， and the increase of jet length enlarges ignition area， which is beneficial to ignition. |
| Key words: Plasma Jet Ignitor Discharge Power characteristics Jet characteristics |
