DOOZYSTUDY.COM

Demonstrate construction and working of automobile batteries. INTRODUCTION Battery is device that converts chemical energy into electrical energy. Storage battery is most important component of the entire electrical system vehicle.

Demonstrate working principle of A.C. generator and its regulators. INTRODUCTION The alternator or A.C. Generator is the generator which produces alternating current instead of the direct current as produced by a commutator type generator. This has replaced D.C. generator since early 1960's because of its distinct advantages. However, as the automotive electrical system requires only direct current, the alternating current produced in the a.c. generator has to be converted first into the direct current, which is easily done with the help of diodes.

Demonstrate automobile bulbs and lights. BULBS Joseph Swan in the UK demonstrated the first light bulb in 1878. Much incremental development has taken place since that time. The number, shape and size of bulbs used on vehicles is increasing all the time. Figure shows a common selection. Most bulbs for vehicle lighting are generally either conventional tungsten filament bulbs or tungsten halogen.

Service Positive Crankcase ventilation system Filtered Air from the air cleaner is drawn through the crankcase by the intake manifold vacuum. The air picks up the blow-by gas or vapor and carries them to the intake manifold. The vapors then flow through the intake manifold to the combustion chambers. There the unburned fuel burns during normal combustion.

Demonstrate construction and working of different types of ignition systems INTRODUCTION The spark ignition engines require some device to ignite the compressed air-fuel mixture inside the cylinder at the end of the compression stroke. Ignition system serves this purpose. It is a part of electrical system which carries the electrical current to spark plug which g ives park to ignite the air-fuel mixture at the correct time. The ignition system consists of a battery, switch, ignition distributor, ignition coil, spark plugs and necessary wiring . Some systems use transistors to reduce the load on the distributor contact points. Other systems use a combination of transistors and a magnetic pick-up in the distributor.