A pistonless rotary engine is a type of internal combustion engine that operates on a rotary motion rather than the linear motion typical of traditional piston engines. One of the most well-known designs of a pistonless rotary engine is the Wankel engine, which uses a triangular rotor that spins around an eccentric housing to create chambers for intake, compression, combustion, and exhaust. **Key Features of Pistonless Rotary Engines:** 1.
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