This “inside-out” approach to the Wankel rotary engine is a key differentiator. Traditional Wankel engines feature a ...

A simplified Wankel engine has only two moving parts: the rotor, and the eccentric shaft. CC-BY-SA-3.0 by Y_tambe via Wikimedia Common The rotor is a triangle shape, but the sides bow out.

Could there possibly be a rotary engine with 12 rotors? The answer is yes, and here’s everything we know about it including how much HP it could have.

Mazda's Wankel rotary engine has always been unique in the automotive landscape as a mass-produced internal combustion engine that eschews such unsightly items as pistons, valves and camshafts.

Although there was briefly a company called Rotary Rocket, the term is much better known as a nickname for the Mazda RX-7 — one of the few cars that used a Wankel, or rotary, engine. If you ever ...