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This animation will explain the inner workings and basic principle of twocycle engines (also known as twostroke engines).

Contents
1) Difference to fourstroke engines
2) Twostroke engine with carburetor
3) Deflector piston, intake port and exhaust port
4) Transfer port of twostroke engines
5) Explaining different strokes
6) Intake, compress, combust
7) Expand, refill, exhaust
8) Crossflow scavenging
9) Uniflow scavenging in opposed piston engines
10) Modern engines with loop scavenging