UNIT I
History of automobiles - Classification of autobomiles
- Engine and cylinder arrangements - Torgue Distribution
and Firing Order - Chasis layout - arrangements.
UNIT II
Engine construction - Cylinder - Cylinder head - Crank
shaft - Cam shaft - Cylinder liners - Piston - Piston
rings - valves and valve operating mechanism inlet and
exhaust manifolds - desingn consideration - materials
of construction.
UNIT III
Automotive fuels - calorific value - Octane number,
Cetane number - fuel transfer devices -Carburettors
- solex - zenith, cartor types - petrol injection system
- fuel saving methods, Alternate fuels for Automobiles.
UNIT IV
Diesel injection systems - air, airlese types-fuel injection
pumps - inline and rotory pumps-nozzles -different types
- diesel filters - diesel pump governors -mechanical
and pnuematics types.
UNIT V
Engine cooling - air, water cooling arrangements - water
pump - radiator - cooling fan -thermostat- different
types - anti freezing compounds.
UNIT VI
Engine lubrication - properties of lubricating oils
- lubrication systems-petrol, wet sump, dry sump systems
-lub oil pumps - gear and vane types - Lub oil filters.
UNIT VII
Suspension system - front and rear axle suspensions-
indiependent suspension - stub axle - rear axle types
- springs - coil leaf, plastic springs - torsion bar-shock
absorber -hydraulic, gas filled types.
UNIT VIII
Battery - construction, working of lead acid battery
- battery charging- maintenance free battery - battery
rating - battery testing and maintenance.
UNIT IX
Ignition system - coil, magneto ignition systems - electronic
ignition systems - components - spark plugs - heat range
-ignition timing.
UNIT X
Trouble shooting and service procedures for engine overhauling
and tuneup - serrvicing of suspension, engine cooling
and lubrication systems - tools and equipments required
for repairs.
PAPER -II
UNIT I
Clutches - types - single and multiple plates - diaphram
clutch -centrifugal clutch Elelctromagnetic clutch -
ooverrunning clutch - fluid coupling - torgue converters
- clutch linkage -mechanical and hydraulic.
UNIT II
Gear box - need, speed nelection - sliding mesh, constant
mesh, synchro mesh types - over drives gear shift mechanisms
- epicyclic and sutomatic transmission.
UNIT III
Transmission - universal joint - constant velocity joint
- propeller shaft - slip joint -hotchkisns drive - torque
tube drive - differential non slip limited slip differential.
UNIT IV
Steering system - Principles of steering - Ackeamann
steering - steering liakage - steering geometry-toe
in, toe out, camber, caster angles -kingpin inclination
-wheel alignment - steering gear box-worm and sector,
recirculating ball rack and pinion types power steering.
UNIT V
Brakes - need - mechanical, hydraulic vaccum, pnematic
brakes - Drum, disc brakes - their relative merits -
power brake- Brake components, Master cylinder, wheel
cylinder - brake actuating linkages - brake adjustment
- common faults and their remedies.
UNIT VI
Wheel and tyres - types -specifications - construction
details - materials of construction - tyre wear and
causes - wheel types - relative merits - wheel balancing
- wheel balancing equipments.
UNIT VII
Generator - types - alternators - relative merits -
principles of operation of cutout and regulators- starter
motors - Bendix drive-solinoid drive - common faults
and their remedies.
UNIT VIII
Lighting and Electrical accessories - automobile lighting
circuits -panel board istruments-automobile air conditioning
-power windows -central locking systems.
UNIT IX
Trouble shooting and service procedures for clutch,gearbox,
crown and brakes - service station equipments -organisatioan
and management of service stations.
UNIT X
Auotomobile Law - motor vehicles act - Registration
of vehicles-driving licence -control of traffic traffic
signs -various insurance policies-pollution and its
control, regulations.
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