An electrical tachometer receives voltage pulses from the ignition system, usually the coil.
电器转速表从点火系统中接受电压脉冲，通常是线圈。
2
There is a best matching relation between ignition control module and ignitioncoil.
汽油机的点火控制器与点火线圈之间存在着一个最佳匹配关系。
3
Ignitioncoil primary winding. Current flow through the coil produces an electromagnetic field, which is used to induce a high voltage in the secondary coil.