Fuel Structure and Properties, SI engine fuels and Diesel Fuels. Alternative fuels: types, uses, advantages and disadvantages. Combustion in SI engines, normal and abnormal combustion. Combustion in CI engines, normal and abnormal combustion. Combustion Chambers design. Scavenging and charging Systems. Engine Performance and related curves/graphs. Brake Power, Indicated Power and Friction power. Torque, Brake and Indicated Mean Effective Pressure (i.m.e.p). Fuel Consumption, mechanical, thermal and volumetric efficiencies.  Introduction to HCCI and CAI Engines.