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.