Governors
The function of a governor is to maintain the speed of an engine within specified limits whenever there is a variation of load. The operation of a flywheel is continuous, whereas that of a governor is more or less intermittent.
Type of Governors
1. Centrifugal governors
Its action depends on the change of speed and centrifugal effect produced by the masses, known as governor balls, which rotate at a distance from the axis of rotation. The valve is operated by the actual change of engine speed in the case of centrifugal governors.
2. Inertia Governors
The positions of the balls are affected by the forces set up by an angular acceleration or deceleration of the spindle, in addition to centrifugal forces on the balls.
It is due to the rate of change of speed in the case of inertia governors.
3. Response of inertia governors is faster than that of centrifugal governors.
4. In an inertia governor, both forces, i.e., centrifugal force and inertia force, are in action.
Types of Centrifugal Governor
- Pendulum type—Watt governor (simplest)
- Loaded type
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