The animation shows the process for one face ... The RX series of sports cars has been synonymous with Wankel rotary engines for decades. The last model was the RX-8, discontinued in 2011.

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 ...

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.