[h=2]Rotary engines.....so the article says....[/h]
Mazda’s 13B rotary engine was available in the 1970s and ’80s. | Mazda
People long have considered the Rotary engine to be Mazda’s
pet project, but its history goes well beyond the Japanese automaker. Conceived in 1929 by Felix Wankel,
the rotary was smaller, lighter, more compact, and ran smoother than a normal internal combustion engine.
In the 1970s, virtually every major automaker tried their hand at perfecting the design. Unfortunately, the triangular-shaped rotors wear unevenly, the engines have a worrisome thirst for oil, and no automaker has ever been able to solve the rotary’s appetite for apex seals. Mazda claims to be working on a next generation rotary engine, but we’ve seen no car with one since the RX-8 disappeared in 2012.