6 ME 2-INTERNAL COMBUSTION ENGINES AND DIESEL POWER PLANT |
Units: I |
Introduction : Historical & Modern Development, Nomenclature, Classification &
Comparison : SI & CI, 4 stroke – 2 stroke, First Law analysis, Energy Balance.
Testing & Performance : Performance parameters, Measurement of operating parameters
e.g. speed, fuel & air consumption, Powers IHP, BHP, FHP, Efficiencies Thermal,
Mechanical, Volumetric, Emission Measurement, Numerical problems, India &
International standards of Testing, Emission.
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Units: II |
Fuel & Combustion
Combustion in CI & SI engines : Ignition Limits, Stages of combustion, Combustion
parameters. Delay period and Ignition Lag, Turbulence and Swirl, Effects of engine variables
on combustion parameters, Abnormal combustion in CI & SI engines, Detonation &
knocking, , Theories of detonation, Control of abnormal combustion, Combustion chamber
Design principles, Types of combustion chamber.
Fuel:- Conventional : Petroleum, structure, Refusing Fuels for SI & CI engines, Knock
rating, Additives, Fuels for Turbine & Jet Propulsion.
Alternative : Methanol, Ethanol, Comparison with gasoline, Manufacturing, Engine
performance with pure Methanol, Ethanol & blends, Alcohols with diesel engine, Vegetable
oils, Bio gas.
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Units: III |
Engine Systems & Components
Fuel Systems :
SI Engine : Combustion & Injection, process & parameters properties of A/F mixture,
Requirements of A/F per different operating conditions, Carburetion & Carburetors, types,
Aircraft carburetor, comparison of carburetion & injection, F/A ratio calculations, Numerical
problems.
CI engine : Mixture requirements & constraints, Method of injection, Injection systems,
CRDI
etc. system components, pumps injectors.
Ignition system : Conventional & Modern ignition systems Magneto v/s Battery, CB
point v/s Electronic ignition, Fuel Ignition Energy requirements. Spark galvanic,
centrifugal, vacuum Firing order, spark plugs.
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Units: IV |
Engine Friction & Lubrication : Determination of friction, Lubrication principles,
Types of lubrication, Places of lubrication Bearings and piston rings etc., Functions of
Lubrication, Properties, Rating and Classification of lubricating oil, Additives,
Lubrication systems.
Engine Cooling : Requirements of cooling, Areas of heat flow, High temperature
regions of combustion chamber. Heat Balance, Cooling Systems, Air, Water Cooling,
Cooling system components.
Supercharging : Objectives, Thermodynamic cycle & performance of super charged SI & CI engines Methods of super charging, Limitations
Two stroke engines : Comparison of 4s & 2s engines construction & valve lining
scavenging. Process parameters, systems, supercharging of 2 stroke engines.
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Units: V |
Dual & Multi fuel engines : Principle, fuels, Combustion, performance Advantages,
Modification in fuel system.
Working principles of . Rotary, Stratified charge, Free piston, Variable compression
ratio engines.
Diesel Power plant: Requirements, capacity, operation, safety, Engine Generator
Coupling, Electrical load, Switching
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