Both rotary engines and piston engines utilize internal combustion and share the same phases of intake, compression, power, and exhaust. But beyond this similarity, they are very different in ...

Through the history of internal combustion engines, there has been plenty of evolution, but few revolutions. Talk of radically different designs always leads to a single name – Wankel.

That means the next-generation rotary will likely feature reduced internal friction and lightweight internals in a quest to reduce emissions and increase fuel economy. But the engine may find ...

Primarily, they’re smaller and lighter than other combustion engines for a given output, and with rotating rather than reciprocating internals, considerably smoother too. The idea of a rotary ra ...

The iconic rotary car engine, thought to have been consigned to the dustbin of impractical technology, is making a comeback in Japan from the very automaker that introduced the system as far back ...

That is bad news for fans of internal combustion engines. The chances are slim that a car model that runs solely on a rotary engine will ever roll off the assembly line again. One senior Mazda ...