Brief history, introduction to automobile, layout of an automobile, Role and requirement of a chassis frame. Types of chassis – Light, medium and heavy duty vehicle chassis, ladder chassis, integral body. Design features of a body – Types of bodies, coach built convertibles. Body accessories, bumpers. Experiments: 1. Measurement of Heavy duty vehicle frame 2. Measurement of Light duty vehicle frame

Desirable characteristics, principle of steering, steering linkage layouts for rigid axle suspension and independent suspension systems, reversible and irreversible steering. Steering gearbox – Purpose, types of steering gearboxes. Front wheel alignment and steering geometry, centre point steering. Power steering – Purpose, basic principle, types of power steering. Experiments: 1. Dismantling and Assembling of Rack & Pinion Steering System 2. Dismantling and Assembling of Recirculating ball steering system 3. Dismantling and Assembling of Motorized power Steering

Clutch-types and construction, gear boxes- manual and automatic, gear shift mechanisms, Over drive, transfer box, fluid flywheel, torque converter, propeller shaft, slip joints, universal joints. Construction - Differential, rear axle. Types -Full Floating, Three Quarter Floating and Semi Floating Axles - Multiaxle vehicles, Hotchkiss Drive. Experiments: 1. Dismantling and Assembling of Coil Spring & Diaphragm spring clutches 2. Dismantling and Assembling of Sliding mesh, Constant mesh & Synchromesh gear box 3. Dismantling and Assembling of Front Axle-Rzeppa joint assembly 4. Dismantling and Assembling of Rear Axle 5. Dismantling and Assembling of Differential Mechanism

Desirable characteristics. Types of suspension systems – Rigid axle suspension and independent suspension systems. Types of suspension springs – Leaf springs, coil springs, torsion bar springs, air springs, rubber springs, hydro elastic springs. Linked suspension system. Shock absorbers – Role of shock absorber – Types of shock absorbers, construction and working of telescopic shock absorber. Experiments: 1. Dismantling and Assembling of Multi-Cylinder Petrol Engine 2. Dismantling and Assembling of Multi-Cylinder Diesel Engine 3. Dismantling and Assembling of petrol and diesel engine fuel system 4. Dismantling and Assembling of two-wheeler - two stroke and four stroke engines.

Need, characteristics of good braking system, principle of working of a braking system, wheel locking and stopping distance. Types of brakes – Drum brakes, disc brakes. Types of brake actuating systems – Mechanical brakes, hydraulic brakes, power brakes, servo brakes. Wheels and Rims, Types of Tyres and their constructional details Experiments: 1. Dismantling and Assembling of Air Braking System