To this day, the Mazda 787B is the only rotary-powered car to win at Le Mans. How did it survive the 24 hours? Why can't it ...

Pistonless rotary engines are the engine family to which the Wankel engine belongs. These engines do not use reciprocating pistons that travel back and forth within a cylinder.

Unlike piston engines, Rotary engines don’t require valves to run. Here’s how rotary engines work and why some designs have incorporated valves.

There’s a new spin on the rotary engine. Liquid Piston, a Connecticut-based engineering firm, has turned the classic Wankel engine design inside out to create a more efficient, and cleaner ...

Rotary engines are also much smaller than their piston-driven counterparts allowing for all sorts of neat packaging opportunities.

The Rotary Engine's Nazi Inventor The history of the rotary engine is a strange and wonderful tale that dates back as far as 1588 when Ramelli invented the first rotary-piston-type water pump.

Mazda unveiled the MX-30 R-EV with a rotary engine range extender, but the 300-mile-plus range version doesn't appear to be coming to the U.S.

The X-Engine used in the HEXE configuration, up to 90% smaller than an equivalently rated piston diesel engine, enables direct and hybrid electric propulsion systems for unmanned aerial and other ...

Transforming the up-and-down movement of a piston into a rotational one means losing some power due to friction, and that's why many engineers tried to create a rotary engine. But only one made it ...

Part of the reason Mazda was experimenting with hydrogen in rotaries was because they have an inherent advantage over piston engines when burning hydrogen.

Mazda is bringing back the rotary engine for use as a range-extending generator in its MX-30 electric SUV, which can only go 100 miles between charges.