Opposed-piston engine technology has been touted as a possible alternative to conventional engine designs for years. Now, opposed-piston engine developer Achates Power reports that its 10.6L ...

Achates Power’s cleaner, heavy-duty diesel engine it developed in a project funded by the California Air Resources Board and several partners has entered fleet service with Walmart in a Peterbilt 579 ...

The opposed-piston engine has been around for over 100 years and is more efficient in almost every way. The engine has no traditional valves, cams, or camshafts, and no head, so it’s simpler and ...

Achates Power of San Diego has developed a two-stroke truck diesel that has two crankshafts linked to two opposed pistons facing each other in a common cylinder. The biggest advantage of this design ...

At a time when heavy-duty internal combustion is frequently castigated in the shadow of zero-emission all-electric and fuel cell powertrains, a leading non-profit clean transportation group is ...

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 ...

Diesel is dead? Not quite yet. Achates announced Friday that it has produced a heavy-duty, two-stroke diesel engine with near-zero emissions that costs less than a conventional engine and is expected ...

The world of automotive engineering is filled with innovation and experimentation, leading to some rather unusual engine designs that made it to production, albeit briefly. These engines often broke ...

Although there is a lot of focus these days on alternative power systems such as batteries and fuel cells, internal combustion engines will continue to play an important role in heavy-duty ...