为使火花塞顶端跳火,必须施加一定的电压,否则不能跳火。跳火所需电压称为“跳火电压”,从发动机角度来说,也可以称为“发动机所需电压”。此电压受各种因素的影响,现将主要因素介绍如下。 In order to spark the top of the spark plug, you must impose a certain voltage, or can not jump fire. The voltage required for flashover is called “flashover voltage” and can also be referred to as “engine required voltage” from an engine point of view. This voltage is affected by various factors, the main factors are introduced below.