[1]
Heat expands air, which pushes a piston toward a gear.
[2]
When the piston is full way toward the gear, warmed air on the hot side is sent to the cool side by the displacer, cooling the air.
[3]
Contraction of the cooled air moves the piston toward the end.
[4]
The cooled air is sent to the hot side by the displacer and warmed (which returns the engine to the situation in [1]). |
