Wankel rotary engines, typically but not exclusively found in Mazdas, certainly lean on the "quirkier" side of modern powertrain systems, made quirkier because most rotary-powered cars on the road ...

In theory, Wankel-style rotary internal combustion engines have many advantages: they ditch the cumbersome crankcase and piston design, replacing it with a simple, single-chamber design and a thick, ...

The rotary engine was an unconventional design that delivered great power for its size. Here's what's good and bad about it.

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