在五十年代末六十年代初,汽车用化油器式发动机向大功率、高转速、多缸、高压缩比发展之后,在点火方面遇到的难题是在高转速下常规点火系统不能供给足够高的电压,以击穿火花塞间隙,形成点燃混合气所必需的能量,即出现了高速断火现象。在火花塞间隙、电极材料、形状与极性相同的情况下,击穿火花塞间隙所需电压的大 In the late fifties and the early l060s, after carburetor engines for automobiles were developed to high power, high speed, multi-cylinder, and high compression ratio, the difficulty in igniting was that the conventional ignition system could not supply at high speed High enough voltage to penetrate the spark plug gap, the formation of the necessary energy to ignite the mixture, that appeared high-speed off the fire phenomenon. In the spark plug gap, the electrode material, the shape and polarity of the same circumstances, the breakdown voltage required spark gap large