Governor: Definition And Function

GOVERNER

WHAT IS GOVERNER? WHY AND WHERE IT IS USED?

Þ     The function of a governor is to maintain the speed of an engine within specified limits whenever there is a variation of load.

In general, the rate of an engine varies in two ways – during each revolution and over some revolutions. In the former case, it is due to variation in the output torque of the engine during a cycle and can be regulated by mounting a suitable flywheel on the shaft. In the latter case, it is due to variation of load upon the engine and requires a governor to maintain the speed.

 The operation of a flywheel is continuous whereas that of a governor is more of less intermittent. A flywheel may not be used if there is no undesirable for all types of engines it adjusts the supply according to the demand.

If the load on the shaft increases, the speed of the motor decreases unless the provision of fuel is increased by opening the throttle valve. On the other hand, if the load on the shaft decreases, the speed of the engine increases unless the fuel supply is reduced by closing the valve sufficiently to slow the motor to its original speed. The throttle valve is operated by the governor through a mechanism for the purpose.

Þ     Governor is used in all types of automobiles and some highly equipped machinery used In the major industrial factories.