Hydraulic speed governor

Details Hydraulic speed governor Hydraulic speed governor

1973-08-31

1978-10-24

Cline, William R.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

1375961, 1375962, F16K 1100

Patent

active

041216091

ABSTRACT:
Flow from a pressure source is bidirectionally conducted to a prime-mover driven, bidirectional, positive displacement pump and in-series flow restrictions; the pressure source and flow restrictions functioning to provide the reference flow rate; the pressure gradient across said pump bidirectionally signalling the error in prime-mover speed. Means responsive to said pressure gradient provide proportional plus integral control of the prime-mover speed. The reference flow rate is controlled by a four-way valve. Load compensation of the four-way valve is provided to obtain high error signals.

REFERENCES:
patent: 2448557 (1948-09-01), Stephens
patent: 2477669 (1949-08-01), Stephens
patent: 2733688 (1956-02-01), Badenoch
patent: 2944527 (1960-07-01), Vander Kaar
patent: 3133559 (1964-05-01), Tennis

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