An opposed-piston free-piston engine is essentially two single-piston free-piston engines that have their pistons coupled together through a linkage. Like a more typical opposed-piston engine, an ...

There’s a new breed of engine coming for the USA's armed forces, and it could pave the way for more powerful and efficient engines in broader applications. It's called the Advanced Combat Engine (ACE) ...

Refrigeration today is something we can easily take for granted. But in the early 1800s, there was one entirely different method of cooling.

Downsizing has resulted in many of our beloved V8s being shelved in favor of six-cylinder alternatives, some of which have then further shrunk down to four-cylinder motors. Now, with the continual ...

Most normal cars with less than eight cylinders nowadays use inline engines, but some also use boxer engines. What's the ...

If you're looking to go full tilt on your next K-series build, 4 Piston Racing's gorgeous billet cylinder head should be at the top of your parts wish list. Designed for max-effort, naturally ...

Alternative fuels to hydrogen and electricity are growing in popularity, and we’re not just talking about options like (experimental) nitrogen or green ammonia. A group of experts has just presented ...