The internal combustion engine, for all its mechanical sophistication, still runs on a 19th-century mechanical idea: pistons rising and falling, a crankshaft spinning, a steam-age architecture ...

The film discusses the development and advantages of the Wankel rotary engine, introduced by Felix Wankel in the early 20th century. It highlights the simplicity, fewer moving parts, and efficiency of ...

Wankel rotary engine powered thousands of aircraft. One of several problems: It spewed castor oil on its pilots.

In the early '90s, Mazda's rotary-powered RX-7 was the quintessential Japanese two-seat sports car. But then the Miata arrived and changed the game.

There are a lot of strange automotive designs out there, but this defunct engine from the '70s may just be the weirdest one ...

Wankel engines first saw use in production cars as early as 1964 — and not even in a Mazda, but rather in an NSU. That little single-rotor powerplant quickly evolved into the more typical two-rotor ...

Designed and championed by self-taught engineer Felix Wankel, the rotary engine is now most closely associated with Japanese automaker Mazda. Many of the greatest Mazdas ever made, including the RX-7 ...

The fascinating history of Chevrolet's mid-engine prototype, the Aerovette, and its unique rotary engine powerplant.