Stirling engine and hybrid system with the same

Details Stirling engine and hybrid system with the same Stirling engine and hybrid system with the same

2004-09-24

2008-12-02

Nguyen, Hoang M (Department: 3748)

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

Having fluid motor motive fluid treating, controlling or...

C060S620000, C060S517000

Reexamination Certificate

active

07458215

ABSTRACT:
The present invention provides a stirling engine, which is capable of reducing a frictional loss and eliminating possibility of deterioration of a heat exchanger due to lubricant oil applied to piston rings and the like. The stirling engine includes cylinders (22,32), pistons (21,31) reciprocating inside the cylinder while keeping an air-tight condition between the piston and the cylinder by means of a gas bearing (48), and an linear approximation mechanism (50) coupled directly or indirectly to the piston and disposed so that the piston may make approximately linear motion when the piston reciprocates inside the cylinder. The stirling engine has a piston engine which is in a ringless (i.e., without piston rings) and oilless (i.e., without lubricant oil) state so as to reduce the frictional loss and to prevent the deterioration of the heat exchanger by the lubricant oil. Since the linear approximation mechanism enables the piston to make approximately linear motion, side force on the piston is virtually eliminated. The stirling engine is effectively used with a gas bearing which has low pressure resistance to side force.

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Kubota; “Dynamics of Mechanism (Kiko Gaku)”; Fundamental Mechanical Engineering Treatise vol. 6; Mar. 18, 1988; pp. 162-164; with translation.

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