AT1352 COMPUTER AIDED VEHICLE DESIGN CHARACTERISTICS 3 1 0 100
To make the students understand the basic principles involved in the computer aided vehicle design and apply the same for the optimum designing of the vehicle components.
UNIT – I INTRODUCTION 9+3
Study and selection of vehicle specifications - Choice of Cycle, fuel, speed, cylinder arrangement, number of cylinders, method of cooling, material, design variables and operating variables affecting
performance and emission.
UNIT – II PERFORMANCE CURVES 9+3
Residence, Power and torque curve, Driving force against vehicle speed – Acceleration and gradability in different gears for a typical car or truck plotted from specifications.
UNIT – III RESISTENCE TO VEHICLE MOTION 9+3
Calculation and plotting the curves of air, rolling and gradient resistences, driving force – Engine power, speed, rear axle ratio, Torque and mechanical efficiency at different vehicle speeds.
UNIT – IV ENGINE DESIGN 9+3
Pressure volume diagram, frictional mean effective pressure, engine capacity, calculation of bore and stroke length, velocity and acceleration, gas force, inertia and resultant force at various crank angles – Side thrust on cylinder walls.
UNIT – V GEAR RATIOS 9+3
Determination of Gear Ratios, Acceleration and gradability - typical problems.
TOTAL : 60
1. Giri. N.K. “Automobile Mechanics” Khanna Publishers – New Delhi – 2002.
2. Heldt P.M “High Speed Combustion Engine” Oxford & IBH Publishing Co., Calcutta 1989.
1. Lichty “IC Engines”, Kogakusha Co., Ltd. Tokyo, 1991.