Table of Contents
What is meant by Hartnell governor?
Hartnell governor is a spring controlled centrifugal governor, in which a spring controls the movement of the ball and hence the sleeve. It consists of a frame /casing, in which a precompressed helical spring is housed. The casing and spring can rotate about the spindle axis.
What is the function of Hartnell governor?
Hartnell Governor. The function of governor is to maintain the speed of an engine within specified limits whenever there is a variation of load. It’s action depends on the change of speed and centrifugal effect produced by the masses, known as governor balls, which rotate at a distance from the axis of rotation.
What type of governor is Hartnell governor?
Wilson-Hartnell governor (also known as radial spring controller) uses two parallel springs along with an auxiliary spring. This type of governor has a primary/ main spring and an auxiliary spring.
What is Wilson Hartnell governor?
It is also known as a spring-loaded governor. It is a special type of governor in which a spring is attached between the balls of the governor. This spring is called Main Spring.
Why spring is used in Hartnell governor?
Construction of Hartnell Governers – It is a Spring-loaded Governor. It has two bell crank levers carrying the fly ball at one end and roller attached to the other end, the function of spring is to provide the counterforce which acts against centrifugal force. The spring and shaft are enclosed inside a casing.
What are the applications of governor?
Governor is the device used to control the speed in engines. It is observed that when load is applied on the engine, the speed tends to decrease which is known as rpm drop also, to compensate the speed, governor is used in all stationary or mobile engines which run on either single speed or variable speeds.
In which governor both the balls are connected with spring?
It is also called Spring Loaded Governor. It is a special type of governor which has a spring attached between the balls of the governor.
What is the need of auxiliary spring in Wilson Hartnell governor?
The Purpose of this auxiliary spring is that to adjust the equilibrium speed for a given radius of rotation. The auxiliary spring tends to keep sleeve down. The bell crank lever rotates with the spindle. When the speed increases the radius rotation of ball increases.
How does Hartnell governor calculate lift of sleeve?
In a Hartnell governor, the lift of the sleeve is given by (where r₁ and r₂ = Max. and min. radii of rotation, x = Length of ball arm of the lever, and y = Length of sleeve arm of the lever)
Which governor is more 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.
Is governor used in cars?
Governors can be used to limit the top speed for vehicles, and for some classes of vehicle such devices are a legal requirement. They can more generally be used to limit the rotational speed of the internal combustion engine or protect the engine from damage due to excessive rotational speed.
What are the two types of governor?
The Governors are mainly divided into two types i.e Centrifugal Governor and Inertia Governor.