What is meant by sensitiveness of governor?

Sensitiveness of Governors Sensitiveness is defined as the ratio of difference between maximum and minimum equilibrium speeds to the mean equilibrium speed. So for a given sleeve lift, the sensitiveness of governor increase with a decrease in speed range.

What is Isochronism of governor?

A governor is said to be isochronous when the equilibrium speed is constant (i.e. range of speed is zero) for all radii of rotation of the balls within the working range, neglecting friction. The isochronism is the stage of infinite sensitivity.

What do you understand by sensitiveness and hunting of a governor?

Concept: A governor is said to be sensitive when it readily responds to a small change of speed. The movement of the sleeve for fractional change of speed is a measure of sensitivity. Hunting: If a governor is too sensitive i.e. for a small variation of speed causes a large change in the sleeve movement.

What is hunting in dynamics of machines?

The phenomenon of continuous fluctuations of the engine speed above and below the mean speed is termed as hunting.

Which governor is most sensitive?

Porter governor is more sensitive than watt governor. The proell governor is most sensitive out of these three. This governor was used by James Watt in his steam engine. The spindle is driven by the output shaft of the prime mover.

What is range of governor?

It is observed from the example taken that the speed range for watt governor was from 66.89 rpm to 77.24 rpm. And in modified watt governor by taking c=10 range was 77.72 rpm to 90.01 rpm. Over all we can say that working range is increased.

What is unstable governor?

A governor is said to be unstable if the radius of rotation decreases as the speed increases.

What are the types of governor?

The Governors are mainly divided into two types i.e Centrifugal Governor and Inertia Governor.

Which governor is used in cars?

The centrifugal/mechanical governor is most commonly used governor in tractors. Two spring-loaded centrifugal weights are mounted on the governor shaft having sliding collar which further actuates the throttle and the fuel supply.

What are the three types of governors?

Following are the three different types of governors used in automobile vehicles:

• Mechanical or centrifugal governor.
• Pneumatic governor.
• Hydraulic governor.

What is meant by hunting of Governor?

Hunting of governor. Hunting is a result of too sensitiveness of governor. It causes continuous fluctuation in engine speed, above and below the mean speed. This phenomenon is known as hunting. The high sensitiveness of governor results in substantial change in fuel supply for small change in engine speed.

What is meant by the term ‘hunting’?

Hunting is a result of too sensitiveness of governor. It causes continuous fluctuation in engine speed, above and below the mean speed. This phenomenon is known as hunting. The high sensitiveness of governor results in substantial change in fuel supply for small change in engine speed.

What is the function of the governor in a diesel engine?

It causes continuous fluctuation in engine speed, above and below the mean speed. This phenomenon is known as hunting. The high sensitiveness of governor results in substantial change in fuel supply for small change in engine speed. When there is a slight increase in speed, the sleeve of governor move to its top most position.

What is the stability of a governor?

Stability of governor. For every speed within governor speed range there is specific equilibrium configuration (radius of ball rotation, sleeve lift) and there is no much hunting, then the governor said to be stable.