STIRLING ENGINE Russian patent published in 1995 - IPC

FIELD: engine engineering. SUBSTANCE: engine has cylinder 1 and displacer 2 and piston 3 mounted inside the cylinder. The displacer and piston separate the space of cylinder 1 into hot space 4 and cold space 5 interconnected trough blower 6, regenerator 7, and cooler 8. Piston 3 is provided with rod 9 for transmitting motion to the driven mechanism. Perforated projections 10 are uniformly arranged over the outer side of displacer 2. The projections are made in block with the displacer and with a spaced relation to cylinder 1 and allow the area of the heat exchanging surface and heat-transfer coefficient between the working fluid and walls of cylinder 1 and displacer 2 to be increased. EFFECT: enhanced efficiency. 8 cl, 5 dwg