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 ...

1. EcoMotors is developing high-efficiency engines — specifically the unique opoc (Opposed Piston Opposed Cylinder) engine — for use in cars, light trucks, marine applications, agricultural vehicles, ...

Bill Wong saw some interesting things at the Military Vehicles Exhibition and Conference (MVEC) including a quad opposed piston engine and a modular, off-road vehicle that can hit 120 mph using active ...

We've seen some bonkers engines in our day, and truth be told, this three-cylinder diesel isn't the strangest of the lot.

Ecomotors Opposed-Piston Opposed-Cylinder Engine could make class 8 trucks 45% more fuel efficient Ecomotors has a goal to demonstrate, in 2010, the automobile industry’s first 5-passenger car capable ...

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 ...

Horizontally-opposed engines are often referred to as "boxer" engines because the motion of the pistons sort of resembles a boxer, punching. Really, though, if any engine should be named for a boxer, ...

Designed in the U.S and tested in a Walmart delivery vehicle all summer long, this revolutionary opposed piston 3-cylinder seems set to prolong the life of ICEs. However, you won’t be seeing it inside ...

Can gasoline-powered vehicles be climate friendly? One company is using an old engine featuring opposed pistons to reduce fuel use. The Nazis put a similar engine in airplanes. One of the puzzles ...

As automakers scramble to develop more efficient engines to meet increasingly tight fuel economy regulations, one company is claiming its new technology will change the auto industry. “[Our] engine ...

Forbes contributors publish independent expert analyses and insights. I write about autos and the business of creating them. Earlier this summer we told you about Achates Power’s efforts to use ...

As automakers scramble to develop more efficient engines to meet increasingly tight fuel economy regulations, one company is claiming its new technology will change the auto industry. “[Our] engine ...