Rotary engines differ from conventional ones in many respects — and one of them is the fact that they use two different spark ...

Join me as I tackle the challenges of repairing and rebuilding my custom rotary valve engine after a dramatic failed start ...

If you're a fan of Mazda's unconventional approach to damn near everything, from the wacky Skyactiv-X compression-ignition engine tech to the legendary Wankel rotary engine that the company perfected ...

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 ...

In a world dominated by pistons, the rotary engine was something different for motorists. It was the vision of German engineer Felix Wankel, built on the belief that the up-and-down motion of pistons ...

Last month we reported that Mazda was more or less abandoning its plans to create a range extender vehicle whose generator was going to be a rotary Wankel engine. The plan was to launch this very ...

It's as crazy as it sounds. Rolls Royce developed a diesel rotary engine for military applications. Because diesel engines require high compression ratios for compression ignition to occur, they used ...