Magnetic driven hydrodynamic lubrication system for free piston

Details Magnetic driven hydrodynamic lubrication system for free piston Magnetic driven hydrodynamic lubrication system for free piston

1989-06-26

1989-12-26

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...

F02G 104

Patent

active

048889504

ABSTRACT:
The apparatus of the invention relates to a free piston Stirling engine that contains a power piston and a displacer piston which each reciprocate in a coaxial cylinder. At least one piston is hydrodynamically lubricated to avoid friction based wear by spinning the piston about its axis through the utilization of at least one magnetic article mounted onto one of the interfacing wall surfaces. The article magnetically interacts with a track made of magnetic material mounted on the opposing, interfacing surface so that during operation the interaction creates a torque which spins the piston about its axis and causes the desired lubrication to take place.

REFERENCES:
patent: 4412418 (1983-11-01), Beale

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