一个基于毛细管放电的重复脉冲电热等离子喷气点火系统
Tianxu Liu1, Runze Cheng1, Ruodan Wang1
1State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049, China.
The Review of scientific instruments
|September 27, 2024
概括
使用毛细血管放电的新型等离子喷气点火系统可增强发动机和燃烧器的燃烧效果. 优化的参数实现了高效率和热流,使微型,重复点火在20 Hz.
科学领域:
- 工程 工程师 工程师 工程师
- 等离子体物理学的物理学
- 燃烧科学 燃烧科学
背景情况:
- 等离子体点火和燃烧增强为发动机,工业燃烧器和排放控制提供了重要的潜力.
- 开发高效和紧的等离子体点火系统对于这些应用至关重要.
研究的目的:
- 为了介绍一个新的重复电热等离子喷气点火系统.
- 调查关键参数对系统性能的影响.
- 为了实现优化和小型化的等离子体点火.
主要方法:
- 这项研究使用了在大气压下运行的消耗毛细血管放电系统.
- 它涉及脉冲电流电路,脉冲电压电路,电流释放单元和LC系列共振电路.
- 通过改变储能电容的电压和释放电流的电阻来评估系统性能.
主要成果:
- 增加电容器电压减少了放电延迟,提高了能量沉积效率.
- 电流释放单元的阻力更高,增加了放电延迟和能量沉积效率.
- 优化的参数产生了66μs的放电延迟,84%的能量沉积效率,23MW/m2的峰值辐射热量流和17厘米的喷射长度.
- 在低电压和效率分散 (0.3%和9.6%) 实现了20 Hz的重复放电.
结论:
- 开发的等离子喷气点火系统在大气压下表现出高效且可重复的操作.
- 简化的电路设计有助于系统的小型化.
- 该系统在各种燃烧增强应用中显示出前景.
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