presentation 2 new

8/6/2019 Presentation 2 New

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PRESENTED BY…..

ABHISHEK SRIVASTAV

DEPARTMENT OF MECHANICAL ENGINEERING

KALYANI GOVERNMENT ENGINEERING COLLEGE



Mr. DEBASISH BHATTACHARYA

&

PROF. ARIJIT DUTTA

UNDER GUIDANCE OF PROF. TRIDIBESH DAS

SOURCES :

a) MECHANICAL WORKSHOP

KALYANI GOVERNMENT ENGINEERING COLLEGE

b) PEARON EDUCATION LEARNING CD



OIL GALLERIES

CYLINDER BORE

CYLINDER HEAD

BOLT BORE



CYLINDER BLOCK CONSTRUCTION

1. It is the basic framework of the engine

2. The cylinder block is basically a casting product.

3. The cylinder block is machined and honed to a very accurate finish for

good lubrication and ring seating.

4. The cylinder walls are finished to 1 micron finish with a fine rotating

hone.

5. An intersecting visible cross-hatch pattern is produced by the hone form.



CYLINDER HONNING PROCSS



CENTRE THE DIRLL PRESS OVER THE HOLE DRILLED



TO DRILL THE HOLE TO THE DESIRE DEPTH



COUNTERSINK THE HOLE



FRESLY DRILLED AND COUNTER SUNK HOLE



TAP THE THREAD INTO HOLE



BLOW THE COMPRESSED AIR TO CLEAN & DRY SURFACES



APPLY THREAD LOCKING COMPOND TO THE TIME SERT



USE THE HEX KEY TO TIGHTEN THE TIME SERT



A PUNCH IS USED TO TAP THE PRONGES FLUSH



THIS IS THE FINISHED TIME SERT THREAD



ENGINE VALVES & SPRING

There are three types of engine valves. Used to admit the air fuel mixture

in cylinder and force the exhaust gas out.

1. Poppet valve

2 Sleeve valve

3 Rotary valve

Silicon-chrome steel containing 0.4% carbon, 0.5% manganese, 0.5%

nickel and 8% chromium is used for inlet valve material, whereas for

exhaust valve nimonic alloy is used consists of 0.05% carbon, 1%

manganese, 0.6% silicon, 20% chromium, 2% cobalt, 2.5%titanium,

1.2%aluminium 5%iron and remaining nickel.

Helical spring with ground and flat end. These are generally made from

high grade spring steel wire. Materials are generally hard-drawn carbon

steel or chrome vanadium steel



VALVE OPENING AND CLOSING



VALVE SEAL

VALVE GUIDE

VALVE SEAT

SPRING RETAINER

MARGIN



GOOD VALVE SPRING BAD VALVE SPRING



INLET MANIFOLD

EXHAUST MANIFOLD

PUSH ROD

EXHAUST VALVE

INLET VALVE

ENGINE HEAD (K.G.E.C. WORKSHOP)



CYLINDER HEAD CONSTRUCTION

1. Cylinder head is cast using cast iron and aluminum alloy.

2. Aluminum alloy is used for weight reduction and greaterthermal conductivity.

3. Aluminium alloy containing 3% copper, 5% silicon, 0.5%

manganese in matrix of aluminium.



OIL PAN TO STORE OIL FOR ENGINE LUBRICATION

K.G.E.C. WORKSHOP

SUMP IS MADE OF PRESSED STEEL OR ALUMINIUM ALLOY



GASKETS

1. Gaskets are used to provide the tight fitting joint between two surfaces.

2. Used between cylinder head and block, crankcase and oil pan, betweencylinder block and manifold or water pump.

3. Cork, asbestos and rubber are used as cork material.



METAL SANDWITCH TYPE GASKETS FOR PASSENGER CAR, TRUCKS



CRANK-SHAFT



PISTON

The The



The

material

used for

the piston

Once was

Cast iron

But now

Aluminium

alloy

Containing

Silicon

WillBe used

The

advantage

over

Aluminium

alloy

Is its

Lighter

Weight

But

Higher

Co-efficient

Of expansion



CHROMIUM FACING MOLYBDENUM FACING

COMPRESSION RING

OIL RING

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