AT2201-AUTOMOTIVE ENGINES |
CONSTRUCTION AND OPERATION |
Constructional details of spark ignition (SI) and compression ignition (CI) engines. Working principles. Two stroke SI and CI engines – construction and working. Comparison of SI and CI enignes and four stroke and two stroke engines. Engine classifcation, firing order. Otto, diesel and dual cycles. |
FUEL SYSTEMS |
Air fuel ratio requirements of SI engines, Air fuel ratio and emissions, Working of a simple fixed venturi carburetor, Constant vacuum carburetor. Diesel fuel injection systems-Jerk pumps, distributor pumps, pintle and multihole nozzles, Unit injector and common rail injection systems. Injection pump calibration. Need for a governor for diesel engines. Description of a simple diesel engine governor. |
COMBUSTION AND COMBUSTION CHAMBERS |
Introduction to combustion in SI and diesel engines and stages of combustion. Dependence of ignition timing on load and speed. Knock in SI and CI engines. Combustion chambers for SI and CI engines. Direct and indirect injection combustion chambers for CI engines. Importance of Swirl, squish and turbulence. Factors controlling combustion chamber design. |
SUPERCHARGING , TURBOCHARGING AND ENGINE TESTING |
Supercharging and Turbocharging, Different methods of turbocharging, Intercooling, Turbocharger controls including, waster gate, variable geometry, variable nozzle types. Dynamometers, Indicated thermal, brake thermal and volumetric efficiencies. Measurement of friction, Cylinder pressure measurement. Engine performance maps, Engine testing standards. |
COOLING AND LUBRICATION SYSTEMS |
Need for cooling, types of cooling systems- air and liquid cooling systems. Thermo syphon and forced circulation and pressurized cooling systems. Properties of coolants. Requirements of lubrication systems. Types-mist, pressure feed, dry and wet sump systems. Properties of lubricants. |
REFERENCE |
Text Books |
1.Internal Combustion Engines by V. Ganesan, 2007, Tata Mc Graw Hill
2.Ramalingam K.K., “Internal Combustion Engines”, Sci-Tech Publications, 2005.
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Reference Books |
1.Advanced Engine Technology by Heisler, SAE Publication.
2.Edward F. Obert Internal Combustion Engines.
3.H.N. Gupta Fundamentals of Internal Combustion Engines by, PHI.
4.Mathur and Sharma Intendamental Combustion Engines Dhanpat Rai and Sons 2002.
5.John B. Heywood, “Fundamentals of Internal Combustion Engines”.
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