Wankel rotary engine
Wankel rotary engine Internal combustion engine with rotors instead of pistons, invented in the 1950s by German engineer Felix Wankel (1902–88). Each triangular rotor turns inside a close-fitting casing. Gaps between the casing and rotor form three crescent-shaped combustion chambers. Each chamber goes through a sequence of events similar to those in a four-stroke engine with pistons.
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rotary engine