How do you know when something's a genius invention? For me, it’s when I see it and instantly go: why didn’t I think of that?

The free piston engine, a design with opposed pistons working against compressed air springs and combining both compression and firing strokes in a single axis, doesn’t turn anything in itself ...

The two-stroke engine is mostly a piece of history today, but there was a time when some of the coolest developments in engine technology were two-cycle engines. Here’s how two-stroke technology rose ...

A two-stroke cylinder produces an explosion on every rotation. When the piston moves towards the top dead center, the end of the exhaust and the compression happen.

There are two basic differences between 2 stroke and 4 stroke motors. One has to do with how many strokes it takes a piston to complete an engine cycle (more on that below).

Ferrari continues to explore hydrogen-powered drivetrain solutions, patent documents discovered by AutoGuide.com indicate Ferrari is looking at a two-stroke 3- or 6-cylinder opposed piston engine ...

Is It Really a "1-Stroke?" This is basically a four-cylinder, opposed-piston engine, similar in basic concept to the EcoMotors OPOC and Achates Power opposed-piston engines.

Some engines use a spark to ignite their fuel, and others rely on compression. What does all of that mean? And how do the two ...

That said, these Austrian two-stroke machines aren’t fuel-injected in the same way as your car. Under the hood, most modern engines feature direct injection, where fuel is squirted directly into ...

When and how to change the oil in a weed whacker is variable. 2-stroke and 4-stroke engines have different requirements, so ...