Visual features of microwave ignition of methane-air mixture in a constant volume cylinder
Visual features of microwave ignition of methane-air mixture in a constant volume cylinder
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DOI：
10.1063/1.4830272
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发表时间：
2013-11
影响因子：
4
通讯作者：
Qiang Wang;Guixin Zhang;Yongxi Liu;L. Hou;Cheng Liu;Zhi Wang;Jian Huang
中科院分区：
文献类型：
--
作者：
Qiang Wang;Guixin Zhang;Yongxi Liu;L. Hou;Cheng Liu;Zhi Wang;Jian Huang
研究了微波点火过程的视觉特征。为实现高压微波点火，设计了一种2.45GHz圆柱形微波谐振器.理论计算了谐振腔中的电场和品质因数。引入针状耦合天线，进一步提高最大电场强度，保证放电的可靠性。我们点燃化学计量的甲烷-空气混合物在10巴的2毫秒，1千瓦，2.45 GHz的微波脉冲。获得了点火过程的摄影图像和压力历程，并进行了分析。这些结果与相同条件下的火花塞点火进行了比较。
In this paper, the visual features of microwave ignition process were investigated. To realize microwave ignition under high pressure, a 2.45 GHz cylinder microwave resonator was designed. The electric field in the resonator and the quality factor were theoretically calculated. A needle-like coupling antenna was introduced to further enhance the maximum electric field to ensure the reliability of discharge. We ignited stoichiometric methane-air mixture at 10 bars by a 2 ms, 1 kW, 2.45 GHz microwave pulse. The photography images and pressure history of the ignition were obtained and analyzed. These results were compared with spark plug ignition under identical conditions.