Disassembly and assembly of IC Engines)- Valve timing and port timing diagram- Heat balance test -Performance and emission study on SI/CI Engine using 13 mode and 8 mode test cycle, with alternative fuels, 5 mode test cycle for constant speed engines- Performance, combustion and Emission study on the effect of different fuel injection pressure and timing on the engine-Performance, combustion and emission characteristics study on the effect of preheated air and fuel. -Experiments on single and multi-cylinder SI/CI Engines to find friction power-Combustion analysis of IC engines using P-Ɵ data.