PIMPRI CHINCHWAD POLYTECHNIC PROGRAM: MECHANICAL ENGINEERING COURSE: AUTOMOBILE (17526)

5.Eletrical systems. CO501.1: Identify various components of Automobile. C501.4 : Describe battery constructional details, charging system, starting system, lighting system.

Electrical Systems

Function of battery: Battery supplies the current for cranking motor and ignition system when the engine is being cranked for starting. When the vehicle is stationary battery supplies electricity for operating the various electrical devices.

Construction: Battery consists of – Container, Positive and negative plates, Separators, Cell cover, Electrolyte, Grids, Cell connectors, Taper terminals, sealing compounds etc. Positive and negative plates are arranged alternately and separated by separators. Negative plates are surrounded by spongy lead paste and positive plates are surrounded by lead peroxide. The entire container of battery is filled with an electrolyte. All positive plates are connected to positive terminal and all negative plates are connected to negative terminal.

Battery……

Battery Testing Specific Gravity Test Open Volt Test High charge Test Cadmium test

Battery Rating Twenty Hour test Cold rating Twenty five ampere rate

Battery Ignition System

Magneto Ignition System

Magneto Ignition System

Electronic Ignition System Transistor Assisted contact system

Capacity Discharge Ignition System

Starting System

Bendix drive

Alternator

Wiring System Colour codes used in wiring system: Brown: Battery & Generator circuit Yellow: Overdrive circuit White: Ignition circuit Green: Auxiliary circuit fed through ignition switch Blue: Head lamp circuit Red: Side and Tail lamp circuit Black: Earth circuits

Wiring Diagram