Ferrari's latest hydrogen engine patent borrows from an old diesel truck design — and it's stranger than you'd expect.

The plastic cover of a Subaru Boxer engine showing the Subaru constellation logo - Topuria Design/Shutterstock Flat engines are horizontally-opposed piston engines, and this group includes Boxer ...

Converting the ignition of a fuel-air mixture into usable mechanical energy lies at the core of a dizzying number of internal combustion engines developed over the course of more than century.

Michelin is expanding its X Line Grip D drive tire lineup with a new pre-mold retread and additional sizes, building on what the company says is strong fleet adoption of the tire's traction, mileage, ...

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 ...

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 ...

Flat engines are horizontally-opposed piston engines, and this group includes Boxer engines, but not opposed-piston engines like the Cummins 14.3L Advanced Combat Engine (ACE) designed to power tanks.