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预燃式等离子体射流点火器工作特性实验研究
蒋陆昀1,于锦禄1,蒋永健2,黄丹青3,王思博1,陈朝1,胡雅骥1
1.空军工程大学 航空工程学院,陕西 西安 710038;2.陆航研究所,北京 101121;3.中国人民解放军95965部队,河北 衡水 253800
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)。
Experimental Investigation on Working Characteristics of Pre-Combustion Plasma Jet Ignitor
JIANG Lu-yun1, YU Jin-lu1, JIANG Yong-jian2, HUANG Dan-qing3, WANG Si-bo1, CHEN Zhao1, HU Ya-ji1
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
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