ME8493 – NOTES & QP
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ME8493 – SYLLABUS
UNIT I GAS AND STEAM POWER CYCLES
Air Standard Cycles — Otto, Diesel, Dual, Brayton — Cycle Analysis, Performance and Comparison — Rankine, reheat and regenerative cycle.
UNIT II RECIPROCATING AIR COMPRESSOR
Classification and comparison, working principle, work of compression — with and without clearance, Volumetric efficiency, Isothermal efficiency and Isentropic efficiency. Multistage air compressor with Intercooling. Working principle and comparison of Rotary compressors with reciprocating air compressors.
UNIT III INTERNAL COMBUSTION ENGINES AND COMBUSTION
IC engine — Classification, working, components and their functions. Ideal and actual : Valve and port timing diagrams, p-v diagrams- two stroke & four stroke, and SI & CI engines — comparison. Geometric, operating, and performance comparison of SI and CI engines. Desirable properties and qualities of fuels. Air-fuel ratio calculation — lean and rich mixtures. Combustion in SI & CI Engines — Knocking — phenomena and control.
UNIT IV INTERNAL COMBUSTION ENGINE PERFORMANCE AND SYSTEMS
Performance parameters and calculations. Morse and Heat Balance tests. Multipoint Fuel Injection system and Common Rail Direct lnjection systems. Ignition systems — Magneto, Battery and Electronic. Lubrication and Cooling systems. Concepts of Supercharging and Turbocharging — Emission Norms.
UNIT V GAS TURBINES
Gas turbine cycle analysis — open and closed cycle. Performance and its improvement — Regenerative, Intercooled, Reheated cycles and their combinations. Materials for Turbines.