3023441 - E5010 STARTING AND RECHARING - Description (Cambio meccanico)
Description
The ignition and recharging circuit comprises
a battery, starter motor and alternator.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 position (AVV), the starter motor
windings are supplied, producing electro-magnetic forces which rotate
the motor pinion. At the same time, the solenoid is energized and
operates the mechanism for engaging the pinion in the flywheel ring
gear, thus turning over the engine.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 generates a magnetic field that induces an alternating
current in the fixed winding (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.The efficiency of the recharging system
is controlled by the Body Computer, which measures the D+ signal
coming from the alternator with the engine running (rpm over 700).If a fault is detected, the warning light
on the instrument panel is lit up.The Body Computer also acquires the battery
voltage in the 6 - 18 V.
The information is then supplied on the
CAN network for the controls unit node on the door which excludes
some services in the case of a voltage drop (for example
See E2510 COURTESY LIGHTS
.