What is the primary function of the governor?

The primary function of the governor in an engine, particularly in the context of electrical power production, is to regulate the speed of the engine. This device continuously monitors the engine's speed and makes adjustments to the fuel supply or other operational parameters to maintain a consistent speed, especially under varying load conditions. By ensuring that the engine runs at the desired speed, the governor plays a crucial role in optimizing performance, improving efficiency, and preventing engine damage due to over-speed or under-speed situations.

While other functions may seem relevant – such as regulating temperature or load capacity – these are typically managed by different systems or components in an engine. The governor's focus on maintaining a stable engine speed is integral for the stable operation of generators and turbines in power production.