Governors on Diesel Locomotive Engines
Speed control governors on the prime movers of diesel locomotives
A vital component of all diesel engines is a mechanical or electronic governor which regulates the idling speed and maximum speed of the engine by controlling the fuel supply.
The major function of the governor is determined by the application of the engine.
In an engine that is required to get up to and run at only a single speed regardless of load, the governor is called a constant-speed type governor.