10 Questions
What is the purpose of the net resultant force on the piston?
To move the piston upwards and increase fuel to the engine.
How does the compensating piston act when the power piston moves up?
The actuating compensating piston moves down.
How does the engine fuel setting change when the power piston moves down?
The engine fuel setting is reduced.
What effect does a decrease in load have on the engine speed?
The engine speed rises.
What happens to the pilot valve when the outer end of the floating lever is raised?
The pilot valve closes.
How does the Woodward hydraulic governor regulate the engine speed?
By adjusting the pressure acting on the power piston and controlling the fuel shut off.
Describe the main components of a hydraulic governor used in a diesel engine for AC power generation.
Centrifugal speed sensing device, oil-operated servo-cylinder, pilot valve, adjustable speed droop, load limit controls.
Discuss the role of the split field, electric motor-operated speeder gear in a hydraulic governor.
It facilitates remote alteration of the engine speed setting from the switchboard by adjusting the spring pressure.
What happens when the speed of the engine decreases due to an increased load in a hydraulic governor system?
The flyweights move towards the center of rotation, lowering the position of the pilot valve plunger to admit oil under the power piston.
How does the gear pump in a hydraulic governor supply hydraulic oil to regulate the maximum pressure?
The gear pump driven from the engine camshaft supplies oil to accumulator pistons, which then regulate the maximum pressure.
Test your knowledge on the hydraulic governor used in alternating current power generation with a diesel engine. Explore topics such as centrifugal speed sensing, oil-operated servo-cylinder, adjustable speed droop, and load limit controls.
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