Patent ID: 8904779

Claim:
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.