about watt governor

now we will deal with the watt governor....:-
it is the simplest form of a centrifugal governor is a watt governor.....it is basically a conical pendulum with links attached to a sleeve of a negligible mass...the arms of the governor may be connected to the spindle in the following way:-
1.the pivot may be on the spindle axis..
2.the pivot may be offset from the spindle axis and the arms when produced intersect...
3.the pivot may be offset but the arms cross the axis...

terms used in the governors

the following terms used in governor are important :-

1.height of a governor :-it is the vertical distance from the centre of the ball to a point where the axes of the arm intersect on the spindle axis....it is usually denoted by h...

2.equilibrium speed :-it is the speed at which governor balls ,arms etc...are in complete equilibrium and the sleeve does not tend to move upwards or downwards...

3.mean equilibrium speed :-it is the speed at the mean position of the balls or the sleeve...

4.maximum and minimum equilibrium speeds:-the speeds at the maximum and minimum radius of rotation of the balls,without tending to move either way are known as maximum and minimum equilibrium speeds respectively...

5.sleeve lift:-it is the vertical distance which the sleeve travels due to change in equilibrium speed....

bout centrifugal governor

today we will discuss about the centrifugal governor....

the centrifugal governor are based on the balancing of centrifugal forces on the rotating balls by an equal and opposite radial force,known as the centrifugal force...it consist of two balls of equal mass,which are attached to the arms.these balls are known as governor ball or fly balls...

the balls revolve with a spindle,which is driven by the engine through bevel gears.

the upper ends of the arms are pivoted to the spindle,so that the balls may rise up or fall down as they revolve about the vertical axis...

the arms are connected by the links to a sleeve,which is keyed to the spindle...

this sleeve revolve with the spindle ,but can spindle up and down ...

the balls and the sleeve rises when the spindle speed increase and falls when the speed deceases...

types of governor

now we will deal with the type of governors:-
the governors may ,broadly be classified as:-
1.centrifugal governor
2.inertia governor


now centrifugal governor are of two types:-
1.pendulum type governor
2.loaded governor

now pendulum type governor is of one type
1.watt governor

and the loaded governor are of two types:-
1.dead weight governor
2.spring controlled governor

now dead weight governor  are of two types namely:-
1.porter governor
2.proell governor

now spring controlled governor are of four types namely:-
1.hartnell governor
2.hartung governor
3.wilson-hartnell governor
4.pickering governor

introduction to the governor system

today we will deal with governor system ,its function....etc.
the function of a governor is to regulate the mean speed of an engine,when there are vibrations in the load...
let us take 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..