3234408 - E5010 STARTING AND RECHARING - Description (Q-System)

Description

The ignition and recharging circuit comprises a 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 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, thus turning the crankshaft. On this version with automatic transmission, the starter motor go ahead is supplied by the automatic transmission control unit (  See E7050  AUTOMATIC TRANSMISSION ). 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.