A repetitive pulsed electrothermal plasma jet ignition system based on capillary discharge.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-01 DOI:10.1063/5.0225316

Tianxu Liu, Runze Cheng, Ruodan Wang, Zheng Zhao, Yanan Wang, Anbang Sun

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引用次数: 0

Abstract

Plasma ignition and combustion enhancement is a promising technology in applications of engines, industrial burners, pollutant emissions controls, etc. A new repetitive electrothermal plasma jet ignition system based on ablated capillary discharge under atmospheric pressure is presented in this paper. It consists of a capillary discharge module, a pulse current circuit, a pulse voltage circuit, a current release unit, an LC series resonant circuit, and a control system. The effects of the energy storage capacitor's voltage and resistance in the current release unit on the electrical parameters are investigated. Increasing the capacitor voltage helps to shorten the discharge delay and increase the energy deposition efficiency in the main discharge process. The increase of the resistance in the current release unit leads to a longer discharge delay and higher energy deposition efficiency in the main discharge process. Balanced parameters between the delay of discharge in 66 µs and the energy deposition efficiency in 84% are achieved through optimization, with a peak radiative heat flux of 23 MW m-2 and a maximum jet length of 17 cm. Repetitive capillary discharge at 20 Hz under atmospheric pressure is achieved with the dispersion of energy storage capacitor charging voltage and energy deposition efficiency of 0.3% and 9.6%, respectively. Simplified circuit topology and control logic contribute to the miniaturization of the ignition system.

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基于毛细管放电的重复脉冲电热等离子体喷射点火系统。

等离子点火和燃烧强化技术在发动机、工业燃烧器、污染物排放控制等领域的应用前景广阔。本文介绍了一种基于大气压下烧蚀毛细管放电的新型重复电热等离子体喷射点火系统。该系统由毛细管放电模块、脉冲电流电路、脉冲电压电路、电流释放单元、LC 串联谐振电路和控制系统组成。研究了储能电容器的电压和电流释放单元中的电阻对电气参数的影响。提高电容器电压有助于缩短放电延迟，提高主放电过程中的能量沉积效率。增加电流释放单元中的电阻可延长放电延迟，提高主放电过程中的能量沉积效率。通过优化，在 66 µs 的放电延迟和 84% 的能量沉积效率之间实现了参数平衡，辐射热通量峰值为 23 MW m-2，最大射流长度为 17 cm。在大气压力下实现了 20 Hz 的重复毛细管放电，储能电容器充电电压的分散性和能量沉积效率分别为 0.3% 和 9.6%。简化的电路拓扑结构和控制逻辑有助于实现点火系统的小型化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.