Center-porting and bearing system for free-piston stirling engin

Details Center-porting and bearing system for free-piston stirling engin Center-porting and bearing system for free-piston stirling engin

1981-09-14

1983-09-20

Ostrager, Allen M.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Unit of mass is a gas which is heated or cooled in one of a...

60517, F02G 104

Patent

active

044048025

ABSTRACT:
The displacer and piston of a Stirling engine are provided with inner cylindrical walls which serve as bearing surfaces in close fitting, sliding engagement with the outer bearing surface of a longitudinally extending, tubular center post. The internal bore of the center post is in fluid communication with the bounce space. Center porting is provided by passages in the piston, displacer and tubular wall of the center post so that fluid communication is provided periodically between the work space and bounce space and between the displacer gas spring and the bounce space. In this manner, the piston and displacer remain properly positioned within the engine housing.

REFERENCES:
patent: Re30176 (1979-12-01), Beale
patent: 4183214 (1980-02-01), Beale et al.
patent: 4188791 (1980-02-01), Mulder
patent: 4353683 (1982-10-01), Clark

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