A ny oddball engine is clickbait crack for mechanical nerds, and the most compelling ones purport to introduce an entirely ...

you likely think it is powered by a piston engine. This is usually true among smaller planes, like the Cessa 172 Skyhawk and the Piper Archer, or older planes like the revolutionary DC-3.

But wait, there really is another option, or at least there should be -- the 10.6-litre, 2-stroke, 3-cylinder, opposed-piston Achates engine. It already meets those tough 2027 regs while being ...

No wonder today's OEM engines have thinner piston rings than their predecessors. Think about a 1972 Camaro and its 350ci small-block, which had a piston ring pack with two 5/64-inch rings and a 3/ ...

Some are promising, one is not. The Napier is a complicated extrapolation of a basic opposed-piston engine. Your average “engine” has cylinders and pistons lined up with a cylinder head on top ...

With the average mid-size SUV coming in at 2.3 tons, this single engine weighs about 100 family cars. These impressive numbers make the Wärtsilä 14RT-flex96C the biggest piston engine in the world.

Instead, the pistons sit on rollers that ride ... Here’s how a 10.3-liter one-cylinder tractor engine “runs” at 0 rpm. The legendary 12-rotor Wankel engine isn’t real – yet.