一种新型的汽车发动机微波点火器  

A new ignition automobile engine microwave

作　　者：彭志伟[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《电子设计工程》2014年第9期165-166,169,共3页Electronic Design Engineering

摘　　要：文中设计了一种新型的同轴线谐振腔微波点火器,谐振频率为2.45 GHz。应用于汽车发动机点火,替代传统的火花塞。该设计基于四分之一波长同轴谐振腔理论,谐振腔为一端短路另一端开路的同轴线构成,内导体由两段不同直径的铜圆柱构成。通过三维电磁仿真软件HFSS得到:在输入功率为500 W时,内导体的顶部电场强度可达到2.4×107 v/m左右,满足汽车发动机高压下形成等离子体的门限条件—2.25×107 v/m,达到点火效果。This paper presents a novel microwave ignition coaxial resonator,the resonant frequency of 2.45GHz.Used in automotive engine ignition,instead of the traditional spark plugs.The design is based on a quarter-wavelength coaxial resonator theory resonator one end and open one end of the coaxial circuit constituted by the two inner conductors of different diameter copper cylinder composition.Three-dimensional electromagnetic simulation software HFSS get：When the input power is 500W,the electric field strength at the top of the inner conductor can reach 2.4 ×107v / m or so,to meet the automotive engine under high pressure to form a plasma threshold conditions-2.25 ×107v / m,reach ignition results.

关 键 词：微波点火器 四分之一波长 同轴线谐振腔 发动机 

分 类 号：TN99[电子电信—信号与信息处理]