Download To explain what a centrifugal governor is

CENTRIFUGAL GOVERNOR
Presented by: Rohan Lyall
Objective:
-To explain what a centrifugal governor is
-To explain how it works
-To present its applications and benefits
What is a Centrifugal Governor?
-The first governor was designed by James Watt in 1788
- A Governor is a feedback device on a machine or engine that
is used to provide automatic control, as of speed, pressure, or
temperature
- A Centrifugal Governor (also known as Watt or fly-ball
governor) is a specific type of governor, that controls the speed
of an engine, by regulating the fuel admitted
How Does it work?
-Uses the principal of proportion control
-A proportional control system - a type of linear feedback
control system.
-output signal of a system is passed back to the input
-Two rotating masses that indirectly control the speed of the engine
-These rotating masses are based on centrifugal force
- As engine speed increases, Centrifugal force increases on masses
which causes an upward lift.
-The rotating masses are attached to valves that control the fuel flow
into cylinders, which then controls the speed of the engine.
IMAGE: CENTRIFUGAL GOVERNOR
APPLICATIONS OF THE CENTRIFUGAL GOVERNOR
- Governors are used frequently in a variety of machine applications.
- They are seen on steam engines, internal combustion engines and
variously fueled turbines
- They are used in:
- Automobiles to restrict/maintain engine RPM, total speed
- Governors protect engine from excessive rotational speed
- used in some high performance cars to limit vehicle speed
- Used in a spring-loaded record player, and telephone dials to
limit the speed.