3309771 - E5010 STARTING AND RECHARING - Description
Description
The ignition and recharging circuit comprises
the battery, starter motor and alternator.The battery (12V) is low maintenance lead
type.The starter motor consists of a direct current
motor supplied by the battery and an excitation solenoid.When the ignition key is turned to the extreme
postion (AVV) the solenoid is excited and operates the flywheel
ring gear pinion engagement mechanism. The engine windings are supplied
by the contacts operated by the solenoid to generate electromagnetic
forces that turn the motor pinion to cause the crankshaft to revolve.The alternator recharges the battery during
normal engine rotation.The alternator shaft (rotor) is turned by
the crankshaft by means of a belt. When supplied with an excitation
current, the rotor sets up a magnetic field that induces an alternating current
in the fixed coil (stator). A diode rectifying bridge located on the
back of the alternator transforms the alternating current into a
direct current, which is sent to recharge the battery.A voltage regulator, also built into the
alternator, maintains a constant voltage supply (about 14V) throughout
the load and engine speed ranges.