One year ago at the Detroit auto show, a company called Achates Power unveiled models of a new kind of internal-combustion engine. With opposed pistons in the middle and crankshafts at either end, it ...

Achates Power and Aramco Services recently announced they will put a Ford F-150 on the road with a novel opposed piston engine under the hood, hoping to prove this exotic engine design is the future ...

Earlier this year, we wrote about the OPOC engine from EcoMotors. Since then, we've discovered another opposed-piston engine, from Achates Power in San Diego. The EcoMotors engine is a module ...

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 ...

A pair of heavy-duty opposed-piston engines will be produced for an emissions-reduction project in California, officials with the program announced Nov. 8 at a press event in San Diego. The two 10.6L, ...

That fresh air is squeezed into a small pocket in the center of the cylinder as both pistons come together, where finally diesel fuel is directly injected, igniting the mixture and creating the power ...

Chris joined CarBuzz in June 2025. He's held positions at Ford and Motor1, and contributed to Autoblog, Car Throttle, Auto Trader, and many other motoring outlets during his 28-year career. Chris ...

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 ...