荣伟新,胡勇,于文斌,等.纳秒脉冲等离子体电源设计及氨气点燃试验[J].内燃机工程,2025,46(3):48-54.
纳秒脉冲等离子体电源设计及氨气点燃试验
Design of a Nanosecond Pulsed Plasma Power Supply and Ammonia Ignition Experiment
DOI：10.13949/j.cnki.nrjgc.2025.03.006
关键词:氨气  纳秒脉冲放电  动力机械工程  等离子体
Key Words:ammonia  nanosecond pulse discharge  power mechanical engineering  plasma
基金项目:国家自然科学基金项目（52406145）；山东省自然科学青年基金项目（ZR2022QE268）
作者单位E-mail
荣伟新* 山东大学 能源与动力工程学院，济南 250061 wxrong@mail.sdu.edu.cn 
胡勇 山东大学 能源与动力工程学院，济南 250061 huyg@mail.sdu.edu.cn 
于文斌 山东大学 能源与动力工程学院，济南 250061 wbyu@sdu.edu.cn 
赵霏阳* 山东大学 能源与动力工程学院，济南 250061 fyzhao@sdu.edu.cn 
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摘要:为解决氨气点火极限范围窄和层流火焰传播速度慢的问题，开发了一种高压纳秒脉冲等离子体电源，以实现高压条件下的持续放电及氨气点火。设计和制作了一种可直接用于发动机缸内的介质阻挡放电（dielectric barrier discharge， DBD）火花塞。试验结果表明，该电源在0.7 MPa环境下成功实现了氨气点火。与传统火花塞对比研究发现，DBD火花塞的点火延迟时间和峰值压力到达时间显著缩短，且燃烧峰值压力更高。在0.7 MPa初始压力下，当量比为0.9时，燃烧峰值压力时间缩短19.7％，燃烧峰值压力提升12.18％。
Abstract:To address the challenges of narrow ignition limits and slow laminar flame propagation speed in ammonia combustion， a high-voltage nanosecond pulsed plasma power supply was developed to achieve sustained discharge and ammonia ignition under high-pressure conditions. A dielectric barrier discharge（DBD） spark plug directly applicable to engine cylinders was designed and fabricated herein. Experimental results show that the power supply successfully achieves ammonia ignition in a 0.7 MPa environment. Comparative studies with conventional spark plugs reveal that the DBD spark plug significantly reduces ignition delay time and peak pressure arrival time， while achieving a higher peak combustion pressure. At an initial pressure of 0.7 MPa and an equivalence ratio of 0.9， the time to reach peak combustion pressure is shortened by 19.7%， and the peak combustion pressure is increased by 12.18%.
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