The Wankel engine, which is also known as a rotary engine, was developed by Felix Wankel in the 1950. This animation explains the basic principle of the rotary engine.
1) Felix Wankel and its invention in the 1950
2) Basic components (rotor, oval-like housing, eccentric shaft, spark plugs)
3) Advantages of the Wankel engine over piston engine
4) Working principle (intake, compression, power, exhaust)