The two-stroke gasoline engine was once a marvel of engineering, offering up huge doses of power in small and lightweight packages. Unfortunately, gas two-strokes also burn oil by design, making them ...

That on-the-fly adjustment is why demonstrations of the RevForce engine show it running on compressed natural gas, switching on the fly to burning hydrogen, and on to other fuels. Alpha-Otto has ...

What if the engine of the future wasn’t just a dream, but a reality? Imagine a power source that combines the raw, exhilarating performance of a two-stroke engine with innovative efficiency, ...

A diesel engine is simultaneously incredibly simple and incredibly violent, using compression as a means of ignition. This is because of the properties of diesel fuel: Namely, diesel is less volatile ...

Is this high-revving, two-stroke, flex-fuel, 106-pound, 173-horsepower, parallel-twin engine really all it’s cut out to be? Detroit’s had its fair share of comebacks, but this one might just be the ...

Unless you're really into dirt bikes, you probably haven't touched a two-stroke engine in decades — if you ever have. These mechanically simple motors combine the four strokes we all know and love ...