4 点火系统点火系统的功用是保证发动机在各种工况下都具有可靠而准确的点火,因此,点火系统必须具有两个分开的电路。一是低压(点火线圈一次侧)电路,由蓄电池、点火线圈一次侧绕组、点火开关、断电器和电容器等组成;二是高压(点火线圈二次侧)电路,由点火线圈二次侧绕组、分电器和点火线圈之间的高压线、分电器 4 ignition system The function of the ignition system is to ensure that the engine has a reliable and accurate ignition under a variety of conditions, therefore, the ignition system must have two separate circuits. First, the low voltage (ignition coil primary side) circuit, the battery, ignition coil primary side winding, ignition switch, power cutoff and capacitors and other components; the second is the high voltage (ignition coil secondary side) circuit by the ignition coil secondary winding, Distributor and ignition coil between the high-voltage lines, distributor