Description

• - DESCRIPTION
• - WIRING DIAGRAM
• - DESCRIPTION OF OPERATION
• - COMPONENTS
• - COMPONENT LAYOUT

DESCRIPTION

The starting and recharging circuit consists of the battery, the starter motor and the alternator.

The battery (12V) is lead type, which requires very little servicing.

The starter motor consists of a d.c. motor fed by the battery and an energising electromagnet.

Turning the ignition key to the end position (IGN) the motor windings are supplied, generating the electromagnetic forces that turn the pinion of the motor. At the same time the electromagnet is energised to activate the pinion meshing in the flywheel crown ring thus starting the crankshaft rotation.

The alternator recharges the battery during the normal engine rotation. The crankshaft starts the alternator shaft (rotor) rotation through a belt. Supplied with the energising current, the rotor generates a magnetic field that induces an alternating current on the fixed winding (stator).

A rectifier diode bridge on the rear of the alternator transforms the alternating current to direct current, that is sent to recharge the battery.

A voltage regulator, also incorporated in the alternator, holds the current delivery at a steady voltage(approx. 14 V) for all the load variation ranges and engine speeds.