Sometimes, the terms boxer engine and flat engine are used interchangeably, even though the two are not the same. What's the ...

Any oddball engine is clickbait crack for mechanical nerds, and the most compelling ones purport to introduce an entirely new combustion concept. "Not a four-stroke, not a two-stroke, a revolutionary ...

Pistons stay cooler and less heat is rejected than in current four-stroke diesels, which allows use of a smaller cooling system. Lab testing shows the Achates has 12 to 16 percent better ...

Achates Power in San Diego says its opposed-piston engine, now in dyno testing, has achieved fuel efficiency that's 21% better thatn a benchmark V-8, the latest 6.7-liter PowerStroke from Ford, and ...

Get ready for a wild engineering adventure! In this video, I’m combining two engines into one insane opposed-piston monster, ...

There's more to piston shapes than you might think. Whether it's domed, flat, or dished, all pistons have their fair share of pros and cons when it comes to performance and efficiency. Understand that ...