What is a governor?

The function of a governor is to regulate the mean speed of an engine, when there are variations in the load e.g. when the load on an engine increases, its speed decreases, therefore it becomes necessary to increase the supply of working fluid. On the other hand, when the load on the engine decreases, its speed increases and thus less working fluid is required. The governor automatically controls the supply of working fluid to the engine with the varying load conditions and keeps the mean speed within certain limits.

A little consideration will show, that when the load increases, the configuration of the governor changes and a valve is moved to increase the supply of the working fluid ; conversely, when the load decreases, the engine speed increases and the governor decreases the supply of working fluid.

Types of Governors

  1. Centrifugal Governors
    1. Pendulam Type
      1. Watt Governer
    2. Load Type
      1. Dead Weight Governor
        1. Porter Governor
        2. Proell Governor
      2. Spring Controlled Governor
        1. Hartnell Governor
        2. Hartung Governor
        3. Wilson Hartnell Governor
        4. Pickering Governor
  2. Inertial Governors
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