Hydraulic generator with free-piston engine

Details Hydraulic generator with free-piston engine Hydraulic generator with free-piston engine

1981-08-05

1983-11-15

Smith, Leonard E.

Pumps

Condition responsive control of pump drive motor

Responsive to accumulation of pumped liquid in receiver

417214, 417364, F04B 1700

Patent

active

044153139

ABSTRACT:
A hydraulic generator with a free-piston engine and hydropneumatic return cushion and with an associated hydraulic-fluid pumping piston feeding a hydraulic accumulator intended to be charged between two detected levels of pressure. The generator includes a lock device for the free piston at the power-stroke dead center with voluntary control, and servo-control means for this lock device with means for detection of the aforementioned two pressure levels, to assure locking the piston in response to detection of the aforementioned highest pressure level and to assure its unlocking in response to detection of the aforementioned lowest pressure level, and thus an automatic intermittent running of said engine.

REFERENCES:
patent: 2472934 (1949-06-01), Beale
patent: 2943610 (1960-07-01), Foster
patent: 3046958 (1962-07-01), Bard et al.
patent: 3606591 (1971-09-01), Potma
patent: 3722481 (1973-03-01), Braun
patent: 4205638 (1980-06-01), Vlacancinch
patent: 4326380 (1982-04-01), Rittmaster

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