Interaction between the Microwave Plasma Generation and the Saturated Voltage during Microwave Pulse Assisted Ignition in ICE Lean Combustion

作     者：SUN Wei CUI Yi SONG Dawei TONG Zongpeng WU Huimin WANG Zhaowen SUN Wei;CUI Yi;SONG Dawei;TONG Zongpeng;WU Huimin;WANG Zhaowen

作者机构：The Key Laboratory for Power Machinery and Engineering of the Ministry of EducationShanghai Jiao Tong UniversityShanghai200240China Shanghai Marine Diesel Engine Research InstituteShanghai200090China School of Energy and Power EngineeringHuazhong University of Science and TechnologyWuhan430074China 

出 版 物：《Journal of Thermal Science》 (热科学学报(英文版))

年 卷 期：2025年第34卷第2期

页      面：639-652页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

主　　题：microwave assisted ignition electrical diagnosis saturated voltage curve microwave plasma ignition enhancement 

摘      要：Microwave-assisted ignition(MAI)is a promising technology to improve the ignition stability in internal combustion engines under lean *** investigate the interplay between the microwave pulses and the electrical characteristics of ignition plasma,the high-time-resolved electrical characteristics of MAI are measured based on the discharge voltage and current profiles with microwave power varying from 0 to 1000 *** effects of microwave pulse on the electrical characteristics in the breakdown and glow discharge phases are discussed *** results show that the microwave-induced-voltage-decline(MIVD)occurs during the glow discharge phase,which originates from the increment of free electrons and the additional microwave ***,this voltage decline is insignificant in the breakdown ***,as the free electron number reaches a critical value,a shining plasma can be observed between the gap of electrodes and the voltage decline is stabilized to asaturated voltage curve.Ultimately,the effect of microwave plasma on the enhancement of ignition kernel area is *** result indicates that the enhancement effect increases with plasma duration *** enhancements of earlier-generated plasmas are more significant than those of subsequent plasmas due to the distance limit of the plasma propulsive effect.