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.

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