Stirling engine gas lubrication structure

A stirling engine gas lubrication structure comprising

• a pair of cylinders comprising:
• a high-temperature side cylinder and a high-temperature side piston reciprocating within the high-temperature side cylinder;
• and
• a low-temperature side cylinder and a low-temperature side piston reciprocating within the low-temperature side cylinder,
• at least the high-temperature side piston comprising:
• a hollow portion;
• and
• an air supply portion ejecting a working fluid from the hollow portion toward a clearance between the high-temperature side piston and the high-temperature side cylinder,
• further comprising a flow structure introducing a working fluid existing within a low-temperature working space into at least the hollow portion, the low-temperature working space being included in a working space where the working fluid circulates between the high-temperature side cylinder and the low-temperature side cylinder, a temperature of the working fluid in the low-temperature working space lower than that of the working fluid in a working space of the high-temperature side cylinder in a driving state,
• the flow structure comprising:
• an introduction pipe connected to the low-temperature side cylinder;
• and
• a resin tube connected between the introduction pipe and the hollow portion.