If someone tells you they have seen a rotary engine, the chances are that you will immediately think of a Wankel engine, as you might find in some of the more exotic Mazda sports cars. But there is ...

That alone reduces emissions and increases engine longevity. The rotary valve also means that the blockages caused by conventional poppet valves are not an issue as poppet valves are not needed in ...

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

Most car enthusiasts associate the term “rotary engine” with Felix Wankel’s invention, developed in the 1950s and most commonly associated with Mazda. However, more than half a century before the ...

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

Imagine an engine that's 30 percent smaller than a traditional piston design of like output, and that runs smoothly, with less noise and vibration. Plus, it burns several types of fuel. That's the ...

A report from TopSpeed has us musing about the future of the motorcycle community when it comes to rotary-powered engines – or if there’s even a potential for a resurgence in the cards at all. There ...