To provide a Stirling engine capable of securing the reliability of pistons which are subjected to gas lubrication between themselves and respective cylinders when the operation is stopped and on the outer peripheral surface of which a layer is formed.
This Stirling engine 10A includes high-temperature side cylinders 22 and expansion pistons 21 which are subjected to gas lubrication, or more specifically static pressure gas lubrication, between themselves and the high-temperature side cylinders 22 and on the outer peripheral surfaces of which a layer 60 formed of a material having a higher linear expansion coefficient than the base material and a flexibility is formed. A booster pump 70 and an ECU are provided as contact avoiding means to prevent the expansion pistons 21 from coming into contact with the high-temperature side cylinders 22 until the operation is brought into a state that the temperature Tp of the expansion pistons 21 can be suppressed below a predetermined value γ when the engine operation is stopped.
SAWADA DAISAKU
KATAYAMA MASAAKI
| JP2009121337A | 2009-06-04 |
Toshiyuki Hatta
High Yoshitaka Hayashi
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