Free-piston regenerative hot gas hydraulic engine

Details Free-piston regenerative hot gas hydraulic engine Free-piston regenerative hot gas hydraulic engine

1978-10-12

1980-08-05

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...

417383, F02G 104

Patent

active

042155487

ABSTRACT:
The present invention is directed to a free-piston regenerative hydraulic engine including a displacer piston which is driven pneumatically by a high-pressure or low-pressure gas. Actuation of the displacer piston circulates the working fluid through a heater, a regenerator and a cooler. The present invention includes an inertial mass such as a piston or a hydraulic fluid column to effectively store and supply energy during portions of the cycle. Power is transmitted from the working fluid to a hydraulic fluid across a diaphragm or lightweight piston to achieve a hydraulic power output. The displacer piston of the present invention may be driven pneumatically, hydraulically or electromagnetically. In addition, the displacer piston and the inertial mass of the present invention may be positioned on the same side of the diaphragm member or may be separated by the diaphragm member.

REFERENCES:
patent: 3513659 (1970-05-01), Martini
patent: 3828558 (1974-08-01), Beale
patent: 3899888 (1975-08-01), Schuman

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