By removing the head, the engine drastically reduces heat loss.
Unlike a standard engine, the Achates design features two pistons per cylinder moving toward each other, meeting in the center for combustion. This "head-to-head" arrangement eliminates several of the most complex and failure-prone parts of a traditional engine, including: Achates
The primary draw of Achates technology is a "step-function" improvement in efficiency. By combining a two-stroke cycle with the opposed-piston architecture, the engine achieves: By removing the head, the engine drastically reduces