Experiment no = 1
Title
Introduction to mechanical technology lab and
safety.
Introduction
Mechanical
technology lab is for the practical uses of different quantities such as
temperature and pressure. In this lab we also know about internal behaviour of
combustion engine. It also shows us the lubricating system, breaking system and
transmission system of automobile. In this lab we will learn about cooling and
refrigeration system.
Machine
layout
Machine are
layout in such a way that they are easy to operate by student or operator. New
machine are bought by university in order to provide better method to young
future engineers.
Safety
rule
Safety rule
is important for any lab. The following safety rule should be followed by
students during performing experiment.
1- Read instruction/listen instruction
before performing experiment.
2- Wear apron.
3- Wear gloves to protect your hands.
4- Wear goggles to protect your eyes.
5- Don’t eat and drink in the lab.
6- Notify your instructor in case of any
accident.
7- After performing experiment closed
the entire electric machine.
8- After handing chemical/material wash your hand with soap o
water
9- During experiment keep your hand away
from your face.
10-
Electrical
safety
Before power
any equipment makes sure the power supply is (1p/3p).
Do not put
anything into electrical cord.
Unplug all
the equipment after experiment.
Conclusion
we know
about the mechanical system and machine layout.
Experiment no = 2
Title
Study of
different pressure gauges
Introduction
In this experiment we will measure differnent pressure gauges
and its working.
Pressure gauges
It is a
tool/instrument which is used to measure pressure.
Objectives
The function
or to study /to learn pressure gauge.
To know
about working principle of manometer.
To know
about working principle of burden tube pressure gauge.
Types of
gauge
1- Manometer
2- Piezometer
3- Burden tube pressure gauge
4- Submaximal gauge
5- Test gauge
6- Digital gauge
Working
principal of manometer
A manometer
is a measuring device for pressure measurement.
A manometer
is U-type shape which one end is closed while the other end is open. When we
apply pressure on the open side the fluid inside the tube move to the closed
side until a point come where the fluid stop. The end point and the empty space
from the open side is the applied pressure or the distance b/w the open side to
the last point of the fluid is the actual applied pressure.
Working
principle of burden tube pressure gauge
It is a
pressure measuring device invented by Eugene Burdon in 1849.
It can measure
up to 100000psi. it is a tube with scale. When we apply pressure on its
adjustable link a gear inside the tube start motion. The point where it stops
is applied pressure. We measure it through scale which is with the burden tube.
In this way we measure the applied pressure by burden tube pressure gauge.
Conclusion
Come to know
about pressure gauge.
Come to know
about how manometer and burden tube pressure gauge work.
Experiment no = 03
Demonstration of main components of internal combustion
engine
Introduction
Internal combustion engine is a device that generates work
and used the products of combustion as a working fluid.
Objective
The objective of this experiment is to identify the (IC)
engine and its parts.
Main parts
1- Water pump
2- Piston
3- Carborator
4- Cylinder head
5- Cylinder
block
6- Crank shaft
Water pump
Water pump is used for cooling of engine and removal of heat.
Cool water has outlet that feed the heated water to the top of the radiator,
water circulation is done by rotatory pump.
Figure 1- water pump
Piston
The moving part attached with cylinder which is tight by
piston ring.
Figure 2- piston
Carburettor
It is an instrument that is used to blend fuels and air in
internal combustion engine. It work on the principle of Bernoulli’s equation.
Figure 3-
carborettor
Cylinder head
It is also called head. It close the top of the from
combustion chamber.it also provide the space for the passages that feeds the
fuels and air to the cylinder and provide path to escape.
Figure 4- cylinder
head
Cylinder block
A metal moulding that contain the cylinder of the (IC)
engine.
Figure 5- cylinder
block
Crankshaft
It is a part of internal combustion engine that is used for
changing the up and down motion of the piston to rotatory motion. It is usually
called crank.
Figure 6- crank shaft.
Conclusion
To know briefly about the internal combustion engine and its
parts.
Lab no= 4
Introduction
to transmission system of an automobile
Introduction
This system
is used to transmit power from engine to the wheel of a car.
Function
of transmission system
The main
function of this system is to provide power to a car for driving.
This system
also provide mean of moving a car to move at various angle.
In simple
this system is mean of moving a vehicle.
of transmission system
The power is
transmitted to trough clutch, gear box, shaft, and differential and at last to
wheel. These processes are done through proper method and follow a proper
manner.
Types of
transmission system
1- Manual transmission system
The transmission system in which clutch are used.
2- Automatic transmission system
The transmission system in which clutch is not used.
Comparison
between automatic and manual transmission system
Automatic
Manual
Requires less skill.
Required more skills.
Clutch is not used.
Clutch is used.
Driver need to operate just
accelerator, break and steering.
Driver need to operate clutch.
More efficient
Less efficient
Conclusion
After this
experiment we are able to know how transmission system of automobile operates.
