Box Turtle

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The Boxy engine is a 1kW Stirling cycle engine designed to produce shaft work at a constant speed. Possible applications of the engine include mobile sawmills, electric generators, or farm equipment. The engine is ideal for applications in remote areas which run at a continuous power level for long periods of time.

Engine Sketchs[edit]

Mechanism Calculations[edit]

The Ross yoke mechanism provides motion close to the ideal Stirling cycle while minimizing side-load on pistons, thereby reducing piston wear. A parametrized model of the mechanism provides an estimation of the hot-side and cold-side piston displacements.

A parameterized model of a Ross yoke is available at the following link: