Page 229 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

MODULE 10 :Charging System

LESSON 67 - 70: Study about Charging system and its
components

Objectives

At the end of this lesson you shall be able to
• explain about charging System
• locate different components of charging system.

Introduction: A charging circuit provides electrical energy to operate electrical devices in an automobile. When
the engine is in motion, the charging circuit converts mechanical energy into electrical energy. This energy is
required to operate the loads in the vehicle’s electrical system, such as horns, lights, indicators etc.
This is achieved by the charging circuit used in GA energy vehicles. The charging circuit includes battery, dynamo
and alternator. In addition to the charging circuit, a starter circuit is also used in automobiles to start an engine that
is unable to start itself (internal combustion engine).
Self-starter, starter motor or solenoid switch is used in the starter circuit for this purpose. This chapter deals with
the functionality of battery, dynamo and alternator along with starting circuit, self-starter, solenoid switch keeping
in mind the utility of charging and starter motor circuits.
Components of charging system:

Electricity is required for the useful operation of automotive vehicles. In the charging circuit, the battery is connected
to the ammeter, the ammeter to the control box terminal (B), the control box terminal (A) and D, the generator
output terminal and the control box terminal to the field coil terminal of the dynamo. Dynamo, control box and
battery are earthed. To regulate the power supply, the main devices required to maintain the level of charging in
the charging circuit are as follows:

Battery
Batteries are a group of cells, which are an important accessory in the automobile sector. Various devices requiring
electricity used in vehicles thereby; Like- self-starter, meters, indicators and gauges etc. are operated.
Additionally, various activities while driving a motor vehicle; For example, the battery is also used in lighting the
lights of motorcycles, playing the horn and running the wind screen wiper.

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