Stirling cycle engine

Abstract

A Stirling cycle engine of a simplified structure, having enhanced reliability by improving abrasion resistance and lubricity of components thereof. When a piston reciprocates in a cylinder along the axial direction thereof by a driving mechanism, a displacer reciprocates in the cylinder along the axial direction thereof accompanying the reciprocation of the piston. The piston and the displacer slide in contact with the inner peripheral surface of the cylinder, but the piston and the displacer are each integrally made from an engineering plastic such as PPS having fine strength, dimensional stability, abrasion resistance and formability, while PPS is made CFRP. Moreover, solid lubricity agent is added to PPS. Accordingly, abrasion resistance, lubricity, strength and precision of the piston and displacer are enhanced, while the piston and the displacer can be simply produced by a well-known plastic molding.

Dependencies are inferred from the claim text.