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非平衡等离子体技术在增强引擎燃烧效率,降低废气排放方面有着巨大的应用潜力,而介质阻挡放电是获得较大体积和较均匀分布非平衡等离子体一种有效方式。为此,详细论述了非平衡等离子体对燃料或助燃气活化作用的基本原理。基于管管结构介质阻挡放电的特点,提出了增强引擎燃烧效率的非平衡等离子体发生器主体结构方案,从理论上阐明了设计方案的可行性。以此方案设计了等离子体发生器,并开展了丙烷燃烧实验,结果表明非平衡等离子体在很大程度上能够改善有机燃料的燃烧状况,使之燃烧得更加充分,有效地验证了非平衡等离子体增强燃烧技术应用于提高引擎燃烧效率的可行性。
Non-equilibrium plasma technology has great potential for enhancing engine combustion efficiency and reducing exhaust emissions. Dielectric barrier discharge is an effective way to obtain larger volume and more evenly distributed non-equilibrium plasma. Therefore, the basic principle of non-equilibrium plasma activation on fuel or combustion gas is discussed in detail. Based on the characteristics of dielectric barrier discharge in tube structure, a scheme of main structure of non-equilibrium plasma generator to enhance engine combustion efficiency is proposed, and the feasibility of the design scheme is clarified theoretically. In this scheme, a plasma generator was designed and a propane combustion experiment was carried out. The results show that the non-equilibrium plasma can largely improve the combustion of the organic fuel and make it burn more effectively, and effectively verify that the non-equilibrium plasma Body enhanced combustion technology is applied to improve the combustion efficiency of the engine.