TE Labmanual

7/28/2019 TE Labmanual

1/31

THERMAL ENGINEERING

LAB MANUAL

w.jntuworld.com

www.jntuworld.com

www.jw


2/31

LIST OF EXPERIMENTS

1. I.C ENGINES PERFORMANCE TEST (4-STROKE DIESEL ENGINE

2. I.C ENGINES HEAT BALANCE

3. ECONAMICAL SPPED TEST (4-STROKE DIESEL ENGINE)

4. PERFORMANCE TEST ON RECIPROCATING AIR COMPRESSOR

5. PORT TIMING DIAGRAM OF A 2-STROKE PETROL ENGINE

6. VALVE TIMING DIAGRAM OF A 4-STROKE DIESEL ENGINE

7.. DIS-ASSEMBLY AND ASSEMBLY OF A ENGINE.

w.jntuworld.com

www.jntuworld.com

www.jw


3/31

I.C ENGINES PERFORMANCE TEST (4-STROKE DIESEL ENGINE)

AIM:

To conduct performance test on 4-Stroke diesel engine (Single cylinder) and to

draw the following graphs.

1. B.P Vs S.F.C

2. Mechanical efficiency Vs B.P

3. B.P Vs Indicated thermal efficiency


5. Air fuel Ratio Vs B.P

6. Air fuel Ratio Vs S.F.C

THEORY:The Test Ring consists of Four-Stroke Diesel Engine, to be tested for

performance, is connected to Rope Brake Drum with Spring Balace (Mechanical

Dynamometer) with Exhaust Gas Calorimeter. The arrangement is made for the

following measurements of the Set-up :

1) The Rate of Fuel Consumption is measured by using the pipette reading againt theknown time.

2) Air Flow is measured by Manometer connected to Air Box.3) The different mechanical loading is achieved by operating the spring balance of

dynamometer in steps.

4) The different mechanical energy is measured by spring balance and radius ofbrake drum.

5) The Engine Speed (RPM) is measured by electronic digital RPM Counter.6) Temperature at different points is measured by electronic digital Temperature

Indicator.

7) Water Flow Rate through the engine & calorimeter is measured by Watermeter.The whole instrumentation is mounted on a selfcontained unit ready for table

operation.

PROCEDURE:

w.jntuworld.com

www.jntuworld.com

www.jw


4/31

1. Check the diesel in the diesel tank.2. Allow diesel, start the engine by using hand cranking.3. The engine is set to the speed of 1500 RPM.4. Apply load from the spring balance of dynamometer.5.

Allow some time so that the speed stabilizes.

6. Now take down spring balance readings.7. Put tank valve in to pipette position and note down the time taken for

particular quantity of fuel consumed by the engine.

8. Note down the temperature readings at different points.9. Note down the water readings.10.Repeat the procedure (4)&(7) for different loads.11.Tabulate the readings as shown in the enclosed list.12.After the experiment is over ,keep the diesel control valve at mains position.

OBSERVATIONS:

EngineSpeed

inRPM

Spring

balanceReadings

Fuel

pipettereadings

Caloriemeter

WaterTemperature

Engine head

watertemperature

Exhaust gas

temperature

Air

inlet

Air flow

Manometer

readings inmm of

water

Wat

flow

ratein

lpm

F1

In

Kgs

F2

In

Kgs

InMl

Time

in

Secs.

InletT2C

OutletT3C

InletT1C

OutletT2C

InletT4C

OutletT5C

T6C

1 2(a) 2(b) 3(a) 3(b) 4(a) 4(b) 5(a) 5(b) 6(a) 6(b) 7 8 9

w.jntuworld.com

www.jntuworld.com

www.jw


5/31

CALCULATIONS

1.FUEL CONSUMPTION IN Kg/Hr

WF =dingsoftablereabColumn

dingsoftablereaaColumn

)3(

)3(x 3.06

2. ENGINE OUT PUT BHP:

BP=4500

)(2 21 rFFNKW

Where, N- Speed of engine in RPMrRadius of brake drum in mts =0.185 mt

F1&F2- Force indicated on spring balance in KGs

3.SPECIFIC FUEL CONSUMPTION (SFC):

SFC =BHP

WFKg/BHP. Hr

4. FUEL HP(THERMAL HORSE POWER),

FHP=4500X60

JxCxW VF Where, Cv = Calorific value of diesel= 10000 K.Cal /Kg

J= Mechanical equivalent of heat=427 kg.m / K.Cal

5. PERCENTAGE THERMAL EFFICIENCY.

% th =FHP

BHPx 100

6. AIR CONSUMPTION IN Kg/ Hr Wa

Wa = 0.6 x A0 x Va x 1.29 x 60 x 60

Where, Ao = Area of the orifice in m2

=4

d2

w.jntuworld.com

www.jntuworld.com

www.jw


6/31

Where d= Dia.of the orifice in m = 0.015 mt

Va = 1]-)[(x1000)(h2g awm/

Where g = 9.81 m/ sce2

hm = Manometer reading in mm (column 5)

w = Density of water = 1000 Kg/ m3

a = Density of air = 1.29 Kg/ m3

7.AIR TO FUEL CONSUMPTION RATIO.

Air to fuel consumption ratio =F

a

W

W

RESULT;

Performance test on 4-Stroke diesel engine(Single cylinder) is conducted and the

following graphs are plotted.

1. B.P Vs S.F.C

2. Mechanical efficiency Vs B.P



5. Air fuel Ratio Vs B.P

6. Air fuel Ratio Vs S.F.C

Sl.NO

Engine

RPM

N

Fuel

ConsumedWf

In Kg/Hr

Air

ConsumedWa

In Kg/Hr

Air to Fuel

Ratio

Wa / Wf

Engine

output

BHP

Specific fuel

consumption

SFC

Fuel HPFHP

Brake %

thermal

efficiency

1

2

3

4

5

6

w.jntuworld.com

www.jntuworld.com

www.jw


7/31

I.C ENGINES HEAT BALANCE

AIM:

To conduct performance test on 4-Stroke diesel engine(Single cylinder) and to

check the heat balance of I.C engine.

THEORY:

The Test Ring consists of Four-Stroke Diesel Engine, to be tested for

performance, is connected to Rope Brake Drum with Spring Balance (Mechanical



1) The Rate of Fuel Consumption is measured by using the pipette reading againstthe known time.




5) The Engine Speed (RPM) is measured by electronic digital RPM Counter.6) Temperature at different points is measured by electronic digital Temperature

Indicator.

7) Water Flow Rate through the engine & calorimeter is measured by Wattmeter.

The whole instrumentation is mounted on a selfcontained unit ready for table

operation.

w.jntuworld.com

www.jntuworld.com

www.jw


8/31

PROCEDURE:

1. Check the diesel in the diesel tank.2. Allow diesel, start the engine by using hand cranking.3. The engine is set to the speed of 1500 RPM.4. Apply load from the spring balance of dynamometer.5. Allow some time so that the speed stabilizes.6. Now take down spring balance readings.7. Put tank valve in to pipette position and note down the time taken for particular

quantity of fuel consumed by the engine.


OBSERVATIONS:

Engine

Speedin

RPM

Springbalance

Readings

Fuelpipette

readings

CaloriemeterWater

Temperature

Engine headwater

temperature

Exhaust gas

temperature

Air

inlet

Air flowManometerreadings in

mm of

water

Watflowrate

in

lpm

F1

InKgs

F2

InKgs

In

Ml

Time

inSecs.

Inlet

T2C

Outlet

T3C

Inlet

T1C

Outlet

T2C

Inlet

T4C

Outlet

T5CT6C

1 2(a) 2(b) 3(a) 3(b) 4(a) 4(b) 5(a) 5(b) 6(a) 6(b) 7 8 9

w.jntuworld.com

www.jntuworld.com

www.jw


9/31

CALCULATIONS:




)3(

)3(x 3.06


BP=4500

)(2 21 rFFNKW

Where, N- Speed of engine in RPM

rRadius of brake drum in mts =0.185 mt



SFC =BHP

WFKg/BHP. Hr


FHP=4500X60




% th =FHP

BHPx 100


Wa = 0.6 x A0 x Va x 1.29 x 60 x 60

w.jntuworld.com

www.jntuworld.com

www.jw


10/31


=4

d2

Where d= Dia.of the orifice in m = 0.015 mt

Va = 1]-)[(x1000)(h2g awm/





7.AIR TO FUEL CONSUMPTION RATIO.


a

W

W

8.. TABLE OF CALCULATIONS.

Sl.NOEngineRPM

N

Fuel

Consumed

WfIn Kg/Hr

Air

Consumed

WaIn Kg/Hr

Air to FuelRatio

Wa / Wf

Engineoutput

BHP

Specific fuelconsumption

SFC

Fuel HP

FHP

Brake % thermal

efficiency

1

2

3

4

5

6

w.jntuworld.com

www.jntuworld.com

www.jw


11/31

9. HEAT BALANCE SHHET ON MINUTE BASIS:

1. Heat supplied in fuel = Fuel consumed in Kg/min x Cv

=60

10000xW FK.Cal / min-------------------I

2. Heat carried away by engine head cooling water

= mw x Cw x (T1-T2) K.Cal / min------------------------II

3. Heat carried away by calorie meter water

= mw x Cw x (T3-T2) K.Cal / min------------------------III

4. Heat carried away by the exhaust gasses

=mg x Cp x [T5-T4] K.Cal / min------------------------IV

mg = Mass of gas = Wa + WF

5.Radiation & un Accounted = I-[ BHP+ II + III+IV] K.Cal/minV

RESULT:

Heat balance sheet is as follows

CREDIT KiloCalories

% DEBIT KiloCalories

%

Heat

supplied in

fuel

100

1.Brake powerBHP

I

BHPx 100

2.Engine head water II

I

IIx 100

3.Calorie meter water III

I

IIIx 100

4.Exhaust gasses IV

I

IVx 100

5.Radiation and unaccounted

( by difference)V I

Vx 100

100 100

w.jntuworld.com

www.jntuworld.com

www.jw


12/31

ECONAMICAL SPPED TEST (4-STROKE DIESEL ENGINE)

AIM:

To conduct economical speed test on 4-Stroke diesel engine(Single cylinder)

THEORY:

The Test Ring consists of Four-Stroke Diesel Engine, to be tested for

performance, is connected to Rope Brake Drum with Spring Balance (Mechanical



1) The Rate of Fuel Consumption is measured by using the pipette reading againstthe known time.




5) The Engine Speed (RPM) is measured by electronic digital RPM Counter.6)

Temperature at different points is measured by electronic digital TemperatureIndicator.

7) Water Flow Rate through the engine & calorimeter is measured by Water meter.

The whole instrumentation is mounted on a selfcontained unit ready for table

operation.

w.jntuworld.com

www.jntuworld.com

www.jw


13/31

PROCEDURE:

1. Check the diesel in the diesel tank.2. Allow diesel, start the engine by using hand cranking.3. The engine is set to the speed of 1500 RPM.4. Apply load from the spring balance of dynamometer.5. Allow some time so that the speed stabilizes.6. Now take down spring balance readings.7. Put tank valve in to pipette position and note down the time taken for

particular quantity of fuel consumed by the engine.


OBSERVATIONS:

Engine

Speed

inRPM

Spring balanceReadings

Fuel pipette readingsAir flow Manometer readings

in mm of water

F1

In Kgs

F2

In KgsIn ml Time in Secs. H1 H2

w.jntuworld.com

www.jntuworld.com

www.jw


14/31

CALCULATIONS




)3(

)3(x 3.06


BP=4500

)(2 21 rFFNKW

Where, N- Speed of engine in RPM

rRadius of brake drum in mts =0.185 mt



SFC =BHP

WFKg/BHP. hr


FHP=4500X60




% th = FHPBHP

x 100

w.jntuworld.com

www.jntuworld.com

www.jw


15/31


Wa = 0.6 x A0 x Va x 1.29 x 60 x 60


=4

d2

Where d= Dia.of the orifice in m = 0.015 mtVa = 1]-)[(x1000)(h2g awm/





7. AIR TO FUEL CONSUMPTION RATIO.


a

W

W

RESULT;

Economical speed test on 4-Stroke diesel engine(Single cylinder) is conducted. From

the graph economical speed of engine is---------------RPM @---------HP

Sl.NO

Engine

RPM

N

Fuel

ConsumedWf

In Kg/Hr

Air

ConsumedWa

In Kg/Hr

Air to Fuel

Ratio

Wa / Wf

Engine

output

BHP

Specific fuel

consumption

SFC

Fuel HPFHP

Brake %

thermal

efficiency

1

2

3

4

5

6

w.jntuworld.com

www.jntuworld.com

www.jw


16/31

PERFORMANCE TEST ON RECIPROCATING AIR COMPRESSOR

AIM:

To study the working of double stage air compressor and determination of volumetric

efficiency, mechanical efficiency.

THEORY:When the motor is started, air is sucked from the atmosphere through the

inlet air filter and orifice meter and compressed in the LP Cylinder. The hot and

compressed air is colled in the intercooler and again compressed in the HP

Cylinder.Finnally, high pressure air passes into air receiver tank through after coller and

non-return valve.

The compressor motor unit consists of a AC motor. The AC motor body

frame is mounted on trunnion bearing which swivels on application of load/torque on the

motor. The torque/load developed is measured at the torque arm of 0.2m using a spring

balance. The encoders (speed pick-ups) are provided for both motor and compressor

shafts for measurement of RPM. A toggle switch and digital RPM indicator are provided

in the control panel

The control console consists of digital speed indicator, temperature

indicator, double column manometer for air flow measurement, pressure gauges for

pressure rise measurement after each stage separately,energy meter to measure electrical

input to the motor. The neccssary mains ON indicators and switches are provided for

completeness of the instrumentation.

The complete unit is built-in. Foundation is not neccssary for installation

of the test rig. The pressure tappings and temperature sensors after each stage are

connected to pressure gauges and indicators in the control panel. Air volume measuring

chamber with orifice of 15mm diameter is fixed beneath the control console and tappings

connected to double column manometer for air intake measurements.

PROCEDURE;

1. Release the pressure of air fully from tank, if previously pressurized.2. Check zero level in the double column.3. SwitchON the mains and observe the light indicators ON.4. Keep the outlet valve closed.5. Switch-ON the starter and allow motor to run full speed.

w.jntuworld.com

www.jntuworld.com

www.jw


17/31

6. As the pressure in the receiver tank increases , set the pressure by obtaining thedelivery valve to 1,2,3 Kg/ cm

2as observed from the pressure gauge and note the

readings.

7. Note down the flow rate manometer readings at different pressures.8. Note down pressure after LP cylinder, after HP cylinder, temperatures after LP

cylinder, after inter cooler , after HP cylinder and at the inlet.

9. Note down the energy meter reading, speed and air temperature.10.Tabulate the above readings as shown.11.Stop the compressor and release the pressure from the tank after the experiment is

completed.

OBSERVATIONS:

T1= Air inlet temperature

T2= After first stage

T3=After inter cooler

T4=After second Stage

E.M Constant=150 Rev/ KWH

Orifice Dia=15mm

Torque arm=0.2m

w.jntuworld.com

www.jntuworld.com

www.jw


18/31

Sl.No

P1(LP)

Pressureafter first

stage in

Kg/ cm2

P2(HP)

Pressure

aftersecond

stage in

Kg/ cm2

Energymeter

reading

No.ofrevns./

Time

in

Secs.

Air flow

across

Orifice inmm of

water

hw

RPM ofcompre

ssor

RPMof

motor

Swinging fieldSpring balance

readings inKg

Temperature

Points

T1 T2 T3 T4

1

2

3

4

5

CALCULATIONS:

1. Density of Air at 30 C (a) = 1.293 Kg/ m3

2. Water Density (w) = 1000 Kg/ m3

3. Acceleration due to gravity,g = 9.81 m/sec2

4. Orifice diameter = 15 mm

5. Co-efficient of discharge of orifice, Cd= 0.64

6. Torque arm distance = 0.2m

7. INPUT TO COMPRESSOR =Energy meter reading

=150

5x

736

60x60x

t

1000hp

( where t is time in Secs.for 5 revns)

8. COMPRESSOR OUTPUT =736

HQWa

Where, Wa = 1.293 Kg/ m3

= 12.68 N/ m3

H(Head in meters of water) =Wa

Px 10

4

P is read on after HP cylinder pressure in Kg/ cm2

w.jntuworld.com

www.jntuworld.com

www.jw


19/31

Q(Flow rate) = Cd A aHg2 m3/ sec

A (Area of orifice) =4

x d2

= 1.766 x 10-4

m2

Ha =1000

hw1

a

w= 0.772 hw

Q = 0.62 x1.766 x 10 -4 m2 x wh0.772x9.81x2

Q = 4.2612x10-4

x wh

Where hw = Head measured in mm of water across orifice plate.

9. % EFFICIENCY OF COMPRESSOR (MECHANICAL)

% compressor=inputElectrical

outputCompressorx 100

10. SWEPT VOLUME OF PISTON (LP) = Area of Piston x Stroke

Vs1=4

x (0.07)2

x 0.085 = 3.2711 x 10-4

m3

11. SWEPT VOLUME OF PISTON (LP) = Area of Piston x Stroke

Vs2=4

x (0.05)2

x 0.085 = 1.6689 x 10-4

m3

Vs = Vs1+ Vs2

12. ACTUAL AIR SWEPT

Va =compressorofRPM

60xQm

3

13.VOLUMETRIC EFFICIENCY

% V =s

a

V

Vx 100

w.jntuworld.com

www.jntuworld.com

www.jw


20/31

Sl.No Electrical

Input in

HP

Discharge

Q

In m3/sec

H

In mts

of air

Compressor

Output in

HP

Theoretical

swept

volume

Actual

swept

volume

%

efficiency(Mechanical)

%

volumetric

efficiency

1

2

3

4

5

RESULT:

Volumetric efficiency, mechanical efficiency of double stage air compressor is

calculated.

w.jntuworld.com

www.jntuworld.com

www.jw


21/31

w.jntuworld.com

www.jntuworld.com

www.jw


22/31

w.jntuworld.com

www.jntuworld.com

www.jw


23/31

PORT TIMING DIAGRAM OF A 2-STROKE PETROL ENGINE

AIM:

To draw the port timing diagram of a 2-stroke petrol engine by studying given out

section model

THEORY:

Port timing diagram is a graphical representation of exact model is the

sequence of operations at which inlet exhaust and transfer port open and closes as well as

firing of fuel. It is generally exposed in terms of angular position of crank shaft.

In theoretical port timing diagram of 2-stroke petrol engine. The fuel is

fired at A i.e., spark advances takes places from TDC to BDC at B both inlet & exhaust

ports are open and motion as well as exhaust port are takes place from B to C position

moves first to BDC and then slightly upwards to C. Both the plates parts are closed and

compression takes place from C to A. The crank shaft revolves through 1200

appproximately and piston moves to TDC in 2-stroke engine crank revolves through 3600

In actual port timing diagram the expansion of the change starts as

position of piston moves from TDC towards BDC first of all burnt gases leaving the

cylinders after a small revolution of crank revolution. The transfer port also opens and

fresh fuel air mixture center into engine cylinder now piston reaches BDC and then starts

moving up wards. As crank moves a little and BDC. The first transfer port closes andthen exhaust port closes. Now the change is compressed with both parts closed & then

ignited with help of spark plug before the end of compression stroke. This is done as the

change required same time to ignite by the time position reaches to TDC. The burnt

gasses push the position downwards with fire and the expansion of burnt gasses takes

place opens and close at equal angle on either side of BDC position.

TPC: Transfer port closed 640

after BDC

EPC: Exhaust port closed 830 after BDC

EPO: Exhaust port opens 680before BDC

TPO: Transfer port opens 480

before BDC

w.jntuworld.com

www.jntuworld.com

www.jw


24/31

PROCEDURE:

1. First observe the various parts of a 2-stroke petrol engine at given section model2. Now set up the pointer which placed on the flywheel to 00 and position at BDC3. Slowly move the flywheel after some time before reaching TDC. Then inlet port

opens measure of angle at which pointer shows

4. The inlet port opens at 300 before TDC. now position reaches TDC and BDC theinlet valve closes 70

0before BDC

5. The spark advance takes places 450before TDC the exhaust port closes at800after BDC and transfer port closes at 60

0after BDC

6. Now position moves from TDC towards BDC suction and compression starts inprevious stroke which the piston reaches BDC. And again inlet port closer at 70

0

before BDC

7. Transfer port is closed at 600 after BDC and and exhaust port closes at 800 afterBDC

RESULT:

1. Scavenging suction process covered =2. Compression process covered=3. Expansion process covered=4.

Exhaust process covered=

w.jntuworld.com

www.jntuworld.com

www.jw


25/31

w.jntuworld.com

www.jntuworld.com

www.jw


26/31

VALVE TIMING DIAGRAM OF 4-STROKE DISEL ENGINE

AIM:

To draw the valve timing diagram of 4-stroke engine by studying the cut section

model

THEORY:

1. The Theoretical valve timing diagram for 4-stroke diesel engine is shown infigure. In this the diagram inlet valve opens at A.

2. The solution takes place from A to B. The crank shaft revolves through 1800 &the piston moves from TDC to BDC.

3. It B the inlet valve closes and the compression revolves through 1800 and thepiston moves from BD to TDC.

4. A C the fuel injection takes places i.e. injection valve opens and fuel is fixed bythe compression

IVO: Inlet Valve open

IVC: Inlet valve close

FVO: Fuel valve open

FVC: Fuel valve close

EVO: Exhaust valve openEVC: Exhaust valve close

PROCEDURE:

1. Observe the various parts of4-stroke diesel engine and various strokes of engine.After this set the pointer at flywheel at zero

2. Now position at BDC on moving slowly the flywheel inlet valve opens before theposition reaching to TDC. Reading are noted

3. Inlet valve opens before TDC and after slowly moved flywheel in the samedirection. The position reaches TDC and then BDC

4. After BDC the inlet valve closes note the position of the inlet valve closes 130after BDC

5. Slowly move the flywheel in same direction after closing of inlet valve suctionstroke is completed

w.jntuworld.com

www.jntuworld.com

www.jw


27/31

6. Exhaust valve is opens at 350 before BDC exhaust valve closes 80 after TDC.Same time exhaust stroke completes and cycle is completed

PRECAUTIONS:

1. Readings should be taking without parallax error2. Observe carefully the valves are closed or in open

RESULT:

The valve timing diagram of 4-stroke diesel engine is studied with the help of given

cut section model

1. Suction covered =2. Compression covered =3. Expansion covered =4. Exhaust covered =5. Overlap =

w.jntuworld.com

www.jntuworld.com

www.jw


28/31

w.jntuworld.com

www.jntuworld.com

www.jw


29/31

DIS-ASSEMBLY AND ASSEMBLY OF A ENGINE.

AIM:

To study the procedure for dis-assembly and assembly of a specific engine by

making a practical trail on it.

THEORY: The main parts of any engine are,

Cylinder Block:

1. It forms the basic frame work of the engine.2. It houses the engine cylinders.3. Serves as bearing or support and guides the piston reciprocating in it.4.

Block contains passengers for circulation of cooling water and lubricating oil.

There are two types of rings

a) Compression ringb) Oil control ring

Connecting rod:

It connects the piston with the crank shaft thus facilitative the transmission

of power combustion chamber to the crank shaft it also converts the reciprocating motion

of the piston into rotary motion of crank shaft.

Fly wheel:

The fly wheel absorbs the energy power source and gives out this energy the other

3-strokes keeping the crank shaft rotating at uniform speed through out.

Cam shaft :

A shaft is responsible for opening the valves on addition the crank shaft operates.

Cylinder head:

1. The head is a mano block casting.2. It contains spark plug notes and cooling water Sackets, valve opening

mechanism is mounted.

3. Complete valve opening mechanism is mounted on the head.

w.jntuworld.com

www.jntuworld.com

www.jw


30/31

Piston:

The top of the piston is called head or crown it may be either done are may

specially to form a desired shape of combustion chamber jointly with the cylinder block.

Piston pin:

It provides a seal b/w the piston fuel pump. Oil pump and distributor valves.

Valves:

These are accurate by the cams which in turn are operated by crank shaft and

perform following functions.

PROCEDURE FOR ENGINE DIS-ASSEMBLY.

For dis-assembly the engine,it should be mounted in a suitable stand.Engine dis-assembly is carried out in a sequence as follows and engine is out of the vehicle and all

the accessories have been removed and oil has been drained.

Remove water pump. Remove exhaust manifold Remove oil filter Remove water outlet fitting Remove thermostat Remove crank shaft pulley Remove oil pump Remove crank case ventilation valve Remove rocker arm assembly Remove cylinder head. Remove oil pan. Remove piston rod and connecting rod. Remove timing gear cover. Remove front end plate. Remove fly wheel housing. Remove fly wheel, clutch Remove crank shaft. Remove exhaust valve and springs.

w.jntuworld.com

www.jntuworld.com

www.jw


31/31

Remove cam shaft, valve tappers. Remove oil gallery plugs.

PROCEDURE FOR ENGINE DIS-ASSEMBLY.

First clean the cylinder block with fresh oils. Piston is connected to connectingrod with gudge pin .This piston have the piston rings.

After fixing the rings piston is inserted in to the cylinder block with help of ringcompressor.

These rings are fitted in the piston grooves with help of calipers.

The crank shaft has been placed on the bottom of the cylinder block theconnecting rod is connected to its crank.

The fly wheel is attached to the crank shaft one side. On the other side of the crank shaft timing gear is fitted. It is for valve operating. This equipment is placed on the sump of the engine. After fixing on the sump the cam shafts are fitted in the cylinder head in the inlet

valve & exhaust valves are fitted with help of G-clamp

To this cylinder the intake manifold and injectors are fitted one side. Other side of the cylinder head the exhaust manifold is fitted. Fill the sump with new oil. After fill up the oil the water pump is fitted. The thermostat is also fitted to this engine then the re assembly of the given

engine is completed.

RESULT:

Thus the procedure of the assembling of a engine is studied and recorded.

w.jntuworld.com www.jw

TE Labmanual

Documents

Transcript of TE Labmanual