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.

Since it looks like Mazda may very well revive the Wankel rotary engine as a range extender for electric cars, there's no better time to become reacquainted with the quirky internal-combustion engine.

and it certainly resembles neither a Wankel rotary nor a jet turbine. But as with the Astron Omega, the Tomahawk TX ...

Rotary engines were conceptualized by German engineer Felix Wankel as an alternative to the piston-powered combustion engines ...

Although there was briefly a company called Rotary Rocket, the term is much better known as a nickname for the Mazda RX-7 — one of the few cars that used a Wankel, or rotary, engine. If you ever ...

Rob Dahm, notorious rotary-powered car builder, has firmly jumped into the deep end of the pool with his latest project: The ...

Mazda however, is uniquely positioned to take advantage of hydrogen as a combustion fuel. They are, after all, the only manufacturer currently building Wankel rotary engines. The nature of the ...

Even with two plugs providing the spark for combustion, the shape and size ... The C111-I of 1969 had a three-rotor Wankel engine with 276bhp, while the C111-II of 1970 featured a four-rotor ...

Sprague de Camp” “The reciprocating-piston internal-combustion engine has been so successful ... extent (such as the one conceived by Felix Wankel in 1956). There still appear to be problems ...