Overspeed protection control for an engine

Details Overspeed protection control for an engine Overspeed protection control for an engine

1975-09-11

1976-12-28

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60431, 60468, 60494, F15B 1518, F15B 2000

Patent

active

039993868

ABSTRACT:
An overspeed protection control for an engine which drives at least one pump and having valve means selectively operable to cause an increase in pressure in a circuit supplied by said pump and a resulting increase in load torque on the engine. Means responsive to the engine speed exceeding a predetermined value causes operation of the valve means, and includes a control valve positionable either in response to a pressure differential across an orifice in the circuit supplied by the pump with the pressure differential being an indication of flow rate and, therefore, engine speed, or operable by a control circuit including means for detecting engine speed.

REFERENCES:
patent: 2255783 (1941-09-01), Kendrick
patent: 2981067 (1961-04-01), Clark et al.
patent: 3355994 (1967-12-01), Malott
patent: 3540218 (1970-11-01), Finn

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