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用于增强燃烧点火和故障分析的2.45GHz半导体微波系统的开发。

Development of 2.45 GHz Semiconductor Microwave System for Combustion Ignition Enhancement and Failure Analysis.

作者信息

Ikeda Yuji

机构信息

i-Lab, Inc., #213 KIBC Bldg., 5-5-2 Minatojima-Minami, Chuo, Kobe 650-0047, Japan.

出版信息

Materials (Basel). 2022 Mar 10;15(6):2042. doi: 10.3390/ma15062042.

DOI:10.3390/ma15062042
PMID:35329494
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8949009/
Abstract

We developed a semiconductor microwave system to improve the ignition process in a combustion system. Under atmospheric pressure conditions, large plasma was successfully ignited by a 2.45 GHz microwave, and it is characterized in comparison with standard spark plug ignition and laser ignition. The size of the microwave power source was also effectively reduced with the minimal size (100 × 60 mm) that could fit in the palm of a hand. We then prototyped a microwave plug with a diameter of 4 mm, which is smaller than the standard spark plugs for passenger cars. The design and electric field strength are discussed in detail. Combustion experiments were conducted using a motorcycle engine and an actual light vehicle, and significant fuel efficiency improvement was experimentally obtained. We investigated the wear of the plug caused by continuous operation, and efficiently improved the endurance by swinging the resonance frequency between 2.4 and 2.5 GHz. In a passenger car engine experiment using a flat panel igniter, significant fuel efficiency improvement was confirmed. Further failure analysis revealed that the ceramic was severely damaged by a large current surge.

摘要

我们开发了一种半导体微波系统，以改善燃烧系统中的点火过程。在大气压条件下，通过2.45 GHz微波成功点燃了大型等离子体，并将其与标准火花塞点火和激光点火进行了对比表征。微波电源的尺寸也得到了有效减小，其最小尺寸（100×60毫米）可以放在手掌中。然后，我们制作了一个直径为4毫米的微波火花塞原型，该火花塞比乘用车标准火花塞更小。详细讨论了其设计和电场强度。使用摩托车发动机和实际轻型车辆进行了燃烧实验，并通过实验获得了显著的燃油效率提升。我们研究了连续运行导致的火花塞磨损，并通过在2.4至2.5 GHz之间摆动共振频率有效地提高了耐久性。在使用平板点火器的乘用车发动机实验中，证实了燃油效率有显著提高。进一步的故障分析表明，陶瓷因大电流冲击而严重损坏。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0555/8949009/e338b0c2c07d/materials-15-02042-g016.jpg
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