Amit Kumar submitted a report on internal combustion engines. The report introduces IC engines and describes their basic parts and mechanisms. It explains the different types of IC engines based on number of strokes, ignition type, mechanical/thermodynamic cycle, and configuration. Diagrams of two-stroke and four-stroke engines are included. The conclusion discusses where high power-to-weight ratio engines like combustion turbines are used, as well as the typical applications of reciprocating piston engines, diesel cycles, and Otto cycles.