The internal combustion engine, for all its mechanical sophistication, still runs on a 19th-century mechanical idea: pistons rising and falling, a crankshaft spinning, a steam-age architecture ...

The rotary engine is perhaps one of the most polarizing motors to have ever been commercialized. From its checkered past to its intent to live on as a range extender, the small spinning triangle has ...

When I wrote about Mazda’s attempt to create the perfect range extender, I mentioned I wanted to examine the ideas that seem to be closer to that goal. Unfortunately, the Japanese company’s attempt ...

The supercharged 25-hp XTS-210 rotary engine is intended to fill a gap on the mobile power market. Credit: LiquidPiston LiquidPiston has launched a 25-hp heavy-fuel rotary engine that could power ...