Imagine triangles spinning around a shower curtain rod inside a beer keg—that is an elemental description of the screaming Wankel rotary engine. This powerplant is beloved by gearheads the world over ...

Astron aerospace has shown a partial prototype of a new rotary combustion engine it claims runs at an extraordinary 60% thermal efficiency, burning totally clean with zero NOx emissions and nothing ...

A Wankel engine is a type of rotary engine, but not all rotary engines are Wankel engines. Wrapping your mind around this idea will help you to better understand the similarities as well as the ...

The rotary engine is unique in its success and failure and its ability to make an impact with a completely different way of thinking. As it is, every production car for the last 130 years, aside from ...

For all automakers’ efforts to perfect the Wankel rotary engine, its advantages over piston engines never seemed to materialize. Everyone from GM to Mercedes-Benz tried to make it work, but only Mazda ...

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 rumor is now a fact: Mazda announced today that it would bring back the legendary rotary engine, though not as the main powerplant of a car. Instead, a version of the rotary will act as a range ...

A company that makes an innovative rotary internal combustion engine just received a Phase I research grant from the U.S. Army to develop hybrid-electric propulsion for UAVs. The development ...

The rotary engine had its moment of automotive glory with Mazda, but while the Japanese automaker's rotary engines where small-displacement, high-revving, buzz bombs, one American startup tried a very ...

The rotary engine, with its egg-like block and triangular rotor, is an oddball even among all the other oddball engine designs—sorry, three-cylinder, twin-turbo, camless Koenigsegg, ya basic. That ...

Another day, another Mazda rotary engine story, except this time, it’s from the automaker itself instead of a third-party speculator. Mazda announced a new division to “accelerate its research and ...

The rotary engine, once heralded as a revolutionary alternative to traditional piston engines, has experienced a tumultuous journey through the annals of automotive history. Despite its decline in ...