정적연소실에서 마이크로파 보조 플라즈마 점화가화염핵 생성과 발달에 미치는 영향Influence of Microwave Ejection on Flame Formation and Development in a Constant Volume Combustion Chamber

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In this study, effects of microwave ejection on flame formation and development was investigated in a constant volume combustion chamber. The new ignition system was consisted with a commercial magnetron(2.45 GHz, 700 W) from a microwave oven, a mixing unit, a directional coupler, and a non-resistor spark plug. A series of experiments was performed under various equivalence ratio, ambient pressure and microwave ejection timing. The experimental results showed that microwave-assisted plasma ignition improved flame speed up to 20 % under the lean air-fuel condition. The lean limit could also be extended up to 0.5 with new system. However, enhancement was limited to lean and low initial ambient air condition. In terms of microwave ejection timing, an early microwave ejection strategy showed better combustion characteristics.
Publisher
한국자동차공학회
Issue Date
2017
Language
Korean
Keywords

Plasma(플라즈마); Ignition(점화); Microwave(마이크로파); Flame(화염); Gasoline engine(가솔린 엔진)

Citation

한국자동차공학회 논문집, v.25, no.6, pp.683 - 690

ISSN
1225-6382
DOI
10.7467/KSAE.2017.25.6.683
URI
http://hdl.handle.net/10203/241159
Appears in Collection
ME-Journal Papers(저널논문)
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