Variable biased hydraulic engine speed control

Details Variable biased hydraulic engine speed control Variable biased hydraulic engine speed control

1979-07-25

1980-12-30

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60591, B60T 1124

Patent

active

042415845

ABSTRACT:
An apparatus for holding the speed of an engine to a fixed level with provision for increasing engine speed above that setting without losing the set point. A combination of piston and cylinder assemblies are joined together to control engine speed. An equipment attendant pressurizes one end of a closed hydraulic system to activate a hydraulic operator to change engine speed. Shutting an isolation valve, hydraulically locks that speed setting into the engine. With the isolation valve shut, a biased, bypass piston and cylinder assembly is activated to increase engine speed. The bypass piston and cylinder assembly is actuated by the same device used by the equipment attendant to pressurize the hydraulic system control initially.

REFERENCES:
patent: 2414302 (1947-01-01), Hebel
patent: 2855755 (1958-10-01), Auger

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