中文摘要：

纳秒脉冲放电等离子体辅助燃烧技术应用前景广阔，既可用于发动机点火和火焰稳定，又可降低废气排放、提高燃烧效率。近十年以来，通过设计各类巧妙的等离子体助燃实验，借助先进的光学诊断技术和数值仿真手段，研究人员在纳秒脉冲等离子体与燃烧相互作用机制、各类参数对助燃的影响以及在发动机燃烧室中的应用等方面都取得了不少重大研究成果。鉴于此，在介绍发展历史和技术需求的基础上，分别从助燃原理、实验与应用研究、诊断与仿真技术这3方面对纳秒脉冲等离子体助燃技术进行了综述。其中，根据最核心参数气体压力的大小进行分类，分别对常低压条件和中高压条件下一些具有代表性的实验研究进行了详细分析：并对包括超贫、低温、无焰燃烧及燃烧不稳定控制在内的一批新兴等离子体助燃技术应用方向进行了评述。最后，从纳秒脉冲等离子体助燃技术实用化角度考虑，指出了研究面临的挑战和未来发展的方向。

英文摘要：

As a promising technology, plasma assisted combustion technology by nanosecond pulsed discharge （NPD） is capable of performing ignition and flame stabilization in engines, raising combustion efficiency while reducing emissions. Over the last decade, significant achievements have been made in the understanding of interaction mechanisms between NPD plasma and combustion, the effect of a variety of parameters on plasma assisted combustion, and its applications in the engine combustor through the design of some smart experiments, the use of advanced optical diagnostics and numeri- cal simulation methods. In view of these facts, a brief history and the requirements of NPD plasma assisted combustion are presented at first. Then, three aspects including the combustion enhancing theory, experimental and applications stud- ies, and diagnostics together with simulation technologies, are reviewed. Among them, several kinds of representative experiments under low/atmospheric pressure and middle/high pressure conditions are analyzed in detail, respectively, based on the magnitude of gas pressure as it is one of the most important parameters for gas discharge. Researches on some new applicable fields of plasma assisted combustion by NPD, such as ultra-lean bum, low temperature oxida- tion/combustion, mild combustion, and combustion instability control, are also introduced and discussed. Finally, considering the practical utilization of NPD plasma assisted combustion, future challenges and development tendencies are revealed.