What is a governor and its function in a diesel engine?

A governor is a flyweight assembly in the engine that detects engine speed. The governor helps the fuel come into the engine proportionally. There are two flyweights on the governor that are fitted to a ball head that rotates on a vertical axis driven by the gear wheel. The centrifugal force throws the weight outwards, lifting the vertical spindle and compressing the spring until equilibrium. The equilibrium or set speed can be changed by the speed selector, which alters the spring compression.


Governor