This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Research and Development of Microwave Plasma Combustion Engine (Part I: Concept of Plasma Combustion and Plasma Generation Technique)
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 20, 2009 by SAE International in United States
Annotation ability available
This study aims to develop innovative plasma combustion system to improve fuel economy and achieve higher efficiency without any modification of current engine configuration. A new plasma generation technique, that used a combination of spark discharge and microwave, was proposed. This technique was applied to gasoline engine as an ignition source, which was intensive and stable even in lean condition. In this technique, firstly, small plasma source was generated by spark discharge. Secondly, microwave was radiated to the plasma source to expand the plasma. The microwave power was absorbed by the plasma source and large non-thermal plasma was formed. In non-thermal plasma, the electron temperature was high and the gas temperature was low. Then many OH radicals were generated in the plasma. The frequency of the microwave was 2.45 GHz because we used a magnetron for microwave oven. Magnetrons for microwave oven were high efficiency and reasonable. So, plasma generation systems, which were compact and economical, could be easily constructed. By using the standard spark plug, it was easy to generate plasma in high pressure condition. We successfully performed to generate plasma in high pressure air of 2.0 MPa. As the microwave plasma was generated, emission intensity of OH radical was increased to 300 times larger than spark discharge. In order to apply this technique to gasoline engine, a spark plug having a microwave antenna inside was developed. The spark plug could form plasma in high pressure condition of 1.0 MPa.
CitationIkeda, Y., Nishiyama, A., Wachi, Y., and Kaneko, M., "Research and Development of Microwave Plasma Combustion Engine (Part I: Concept of Plasma Combustion and Plasma Generation Technique)," SAE Technical Paper 2009-01-1050, 2009, https://doi.org/10.4271/2009-01-1050.
- Linkenheil K. RuoR H. O. Heinrich W. Design and Evaluation of a Novel Spark-Plug Based on a Microwave Coaxial Resonator Microwave Conference, 2004. 34th European 3 11-15 Oct. 2004 1561 1564
- Linkenheil K. Ruoβ H. O. Grau T. Seidel J. Heinrich W. A Novel Spark-Plug for Improved Ignition in Engines With Gasoline Direct Injection (GDI), Plasma Science IEEE Transactions 33 5 Oct. 2005 1696 1702
- Ikeda Y. et. Al. “Local equivalence ratio measurement of CH4/air and C3H8/air laminar flames by laser-induced breakdown spectroscopy” 44th AIAA Aerospace Sciences Meeting and Exhibit 9-12 January 2006 Reno, Nevada AIAA Paper No. 2006-965
- Ishii S. J. Plasma Fusion Res 80 10 2004 827
- Kanazawa S. Kogoma M. Moriwaki T. Okazaki S. Proceedings of the Japan Symposium on Plasma Chemistry 3 1839 Tokyo 1987
- Kogoma M. Prat R. Suwa T. Okazaki S. Inomata T. Plasma Processing of Polymers NATO ASI Series E, Applied Science 346 1997 379
- Ikeda Y. Nishiyama A. Kawahara N. Tomita E. Arimoto S. Takeuchi A. In-spark-plug Sensor for Analyzing the Initial Flame and Its Structure in an SI Engine SAE Paper, No. 2005-01-0644 2005