Introduction:
Definition of a Heat engine; external and internal combustion engine; basic engine components and nomenclature; the working principles of engines; classification of IC engines; applications of IC engines, components of I. C. engine, types, their functions and materials.
Fuel Supply Systems:
SI Engine:
Principle of elementary carburetor, Mixture requirements for steady state and transient operation, Gasoline Fuel Injection.
C.I. Engines:
Fuel injection pump systems- Types, constructional features and operation, Factors influencing fuel spray atomization, penetration and dispersion of diesel, Fuel Injection Pumps (inline, rotary), Filters, Governors – Types of Governors - fuel feed pumps and Types, injectors and nozzles – types, functions and necessities, injection lag, pressure waves in fuel lines.
Combustion in S. I. engines:
Essential features of ignition timing and ignition voltage, MBT timing, knock detection and control strategies, thermodynamic analysis of SI engine combustion, analysis of cylinder pressure data, requirements of combustion chambers, and types of combustion chambers.
Combustion in C. I. engines:
Essential features of injection timing and delay period, correlations for ignition delay in engines, effect of fuel properties, types of combustion chambers and merits of the different types, analysis of cylinder pressure data, fuel spray behavior.
Cooling and Lubrication System:
Cooling System:
Necessity, variation of gas temperature, Areas oh heat flow, heat transfer, piston and cylinder temperature, Heat rejected to coolant, quantity of water required, cooling system, air cooling, water cooling, thermodynamics of forced circulation, thermostats, pressurized water cooling, regenerative cooling, comparison of air and water cooling, radiators types, cooling fan – power requirement, antifreeze solution.
Lubrication System:
Lubricants, lubricating systems, Lubrication of piston rings, bearings, oil consumption, Oil cooling. Heat transfer coefficients, liquid and air cooled engines, coolants, additives and lubricity improvers, oil filters, pumps, and crankcase ventilation – types.
Engine Management System:
Combined ignition and fuel management systems, Digital control techniques. Complete vehicle control systems, Artificial intelligence and engine management, Exhaust emission control in SI and CI engines Techniques.
Recent Developments in Automotive Engines :
Supercharger, Working Principle, Effect of Super charging, Types and Methods of Super charging, Turbo Charger, Working Principle , Turbo-lag, VVT, V-TEC i-VTEC and IDTEC. ATFT, CRDI system- working Principle, Advantages and Effect of CRDI on emission reductions, Hybrid vehicles and fuel cells.
Engine Performance Testing:
Engine performance parameters; Methods of determination of BP, IP, FP, volumetric, thermal, mechanical, scavenging efficiencies, etc., types of dynamometers, Morse Test, Numerical Problems in Engine Testing, Engine Performance and heat balance sheet.