Differential Stroke-Cycle Piston Technology (D-Cycle)
Dyena consulted on Yan Engines new technology, with James Glover the Lead Designer of the project.
The D-Cycle piston replaces pistons in traditional internal combustion engines with a split-piston, changing the engine’s basic functionality and transforming the way the engine produces power and adapts to driver demand, improving fuel efficiency by 20%.
The heart of the D-Cycle is a split-piston that completes the four engine strokes in a single crankshaft revolution, reducing the cyclic energy losses. The D-Cycle performs both functions in a single revolution by splitting the piston and using the lightweight top half for the low stress functions of gas exchange and the combined halves for the high stress compression and combustion functions.