
182 LIGHT AND HEAVY VEHICLE TECHNOLOGY
timed to occur in each cylinder at an optimum point in
the engine operating cycle.
Components of the coil ignition system
The non-electronic battery-and-coil ignition system
comprises the following units:
Battery and charging system This is the source of
supply of electrical energy for the low-tension primary
circuit of the ignition system.
Ignition switch The purpose of this is to connect and
disconnect the ignition system from the battery and
charging system so that the engine can be started and
stopped by the driver.
Ignition coil The purpose of this is to transform voltage
from a low-tension source ...