Basics of IC Engines
Heat engine, IC and EC engines, I.C. engine construction - Components and materials,
Engine nomenclature, Valve timing diagram, Intake and exhaust system, Engine
Fuel Air Cycle and Actual Cycle
Fuel air cycle, Assumptions, Comparison with air standard cycle, Effect of variables on
performance, Actual cycle and various losses.
Theory of carburetion, Types of carburetors, Electronic fuel injection system,
Combustion in spark ignition engines, Stages of combustion, Flame propagation, Rate
of pressure rise, Abnormal combustion, Phenomenon of detonation in SI engines,
Effect of engine variables on detonation. Combustion chambers, Rating of fuels in SI
Fuel supply system, Types of fuel pump, Injector and distribution system, Combustion
in compression ignition engines, Stages of combustion, Factors affecting combustion,
Phenomenon of knocking in CI engine. Effect of knocking, Methods of knock control,
Types of combustion chambers, Rating of fuels in CI engines. Dopes and additives,
Comparison of knocking in SI and CI engines.
Testing of IC Engines
Objective of testing, Various performance parameters for I.C. engine - Indicated power,
Brake power, Friction power, SFC, AF ratio etc. Methods to determine various
performance parameters, Characteristic curves, Heat balance sheet.
Supercharging and turbo-charging methods and their limitations.
IC Engine Systems
Cooling system, Lubrication system, Ignition system, Governing system, Starting system.
I.C. Engine Emissions and Control
Air pollution due to IC engine and its effect, Emissions from petrol/gas and diesel
engines, Sources of emissions, Euro norms, Bharat stage norms, Emission control
methods for SI and CI engines.
Positive Displcement Compressors (Reciprocating and Rotary)
Reciprocating compressor - Single stage compressor - Computation of work done,
Isothermal efficiency, Effect of clearance volume, Volumetric efficiency, Free air
delivery, Theoretical and actual indicator diagram, Multistaging of compressor,
Computation of work done, Volumetric efficiency, Condition for maximum efficiency,
Inter-cooling and after cooling, Capacity control of compressors
Rotary compressor - Introduction, Vane compressors, Roots blower, Screw