INTRODUTION:-

NAME = BILAL AHMAD

Designation= SERVICE ENGINEER

Department= Product Support Desiel Engine

Company= Orient energy system pvt. limitid

DiscriptionEngine Works & Wears

Engine Wear

Combustion Process

Internal Components

External Components

Cooling System

Lube System

Fuel System

Air System

MODEL=C33D5 (X Series)Frequency=50Fuel Type= Diesel

Genset Data Sheet

TECHNICAL SPECIFICATIONSENGINE MODEL

For genset Models

Engine Type

No. Of Cylinder

Compression Ratio

Firing Order

Cycle of operation

Combustion system

Fuel pump

Governing

Cooling

X3.3 GI, X3.3G2

C33D5,C38D5 C30D6,C35D6

INLINE

4

18.5:2

1-3-4-2

Four Stroke

Direct Injection

BOSCH IN-LINE

Mechanical

Water cooled

Engine

An engine is motor which converts chemical energy into mechanical energy

Combustion Process

The Combustion Process – 4 Stroke Cycle

Intake Compression

The Combustion Process – 4 Stroke Cycle

Power Exhaust

Internal Components

Parts of an engine

Various Parts of Engine

• Crankshaft• Crankcase• Crank Pin• Camshaft• Spark plug• Fuel pump

• Cylinder Block• Cylinder Head• Inlet valve & Exhaust valve• Piston• Piston Rings• Connecting Rod• Gudgeon Pin

Cylinder Block

The cylinder block, also called as engine block is the main bottom end structure. Usually it is made up of iron or aluminum.Function: In the bore of the cylinder the fresh charge of air-fuel mixture is ignited,compressed by piston.

Cylinder Head

The cylinder head is flat plate of metal bolted to the top of cylinder block with head gasket in between;Top of head contains rocker arm & push rod to transfer rotational mechanic from the crankshaft to linear mechanic to operate the valves. It is the key to performance of the internal combustion chamber.

Inlet valve & Exhaust valve

Inlet valve:Its function is to intake the fresh air-fuel mixture into the cylinder.

Exhaust valve:Its function is to exhaust is the burnt gases by the force of piston.

Piston

Piston is connected to the crankshaft through the connecting rod,when piston moves downward sucks fresh air-fuel mixture in suction stroke & ignited inside the cylinder due to this high temperature and pressure generated,thus expanded gas force down to piston.

Piston Rings

A piston ring is an open ended ring that fits into a groove or outer diameter of the cylinder. Piston rings have three major functions which are to seal the expansion chamber,support heat transfer & finally,regulate the engine oil consumption.

Connecting Rod & Gudgeon Pin

A small end of connecting rod is connected to the piston and other end is connected to the crankshaft.Its function is to transmit the reciprocating motion of piston to the to the rotary motion of crankshaft.Gudgeon pin is used to connect the piston & connecting rod.

Crankshaft

Crankshaft is the part of an engine which translates the reciprocating linear motion of piston into rotation. To convert the reciprocating motion into rotation,the crankshaft has “crank pin”,it typically connects to flywheel,to reduce the pulsation characteristics four stroke cycle.

Camshaft

Camshaft is a part which is used in piston engine to operate valves. It consists of cylindrical rod with cams. The camshaft were invented in Iraq (Mesopotamia), described by Al-Jazari in 1206.The relationship between camshaft rotation & crankshaft rotation is of critical importance.

External components

TurbochargerAn exhaust driven air compressor

Impeller on the left

Turbine on the right

Connecting shaft, free floating bearings, oil lubricated center housing

AftercoolingHeat exchanger for inlet air

Series of metal tubes through which hot inlet air flows

Heat from the air flowing from the tubes is absorbed through the tube walls and carried away

2 types Air to air (ATAAC) Jacket water (JWAC)

Water PumpFlow of the coolant begins at the water pump

Water pumps are gear or belt driven

Water pump seals

Separates engine oil from coolant

OIL COOLER

FUEL SYSTEM

Types of fuel system

PT = PRESSURE TIME

IFSM =INTIGRATED FUEL SYSTEM MODULE

CRS= COMMON RAIL SYSTEM

MCRS= MODULAR COMMON RAIL SYSTEM

CAPS=COMMON ACCUMOLATED PUMPING SYSTEM

HPI=HIGH PRESSURE INJECTION SYSTEM

ININE= INJECTION

ROTARY= INJECTION

FUEL SYSTEM DIAGRAM

FLOW DIAGRAM,FUEL SYSTEM

1.FUEL FROM SUPPLY TANK

2.FUEL LIFT PUMP

3.FUEL FILTER/WATER SEPARATOR

4.LOW-PRESSURE FUEL SUPPLY LINES

5.BOSCH@ KKSB COLD START INJECTION ADVANCE

6.Bosch@ VE INJECTION PUMP

7.FUEL DRAIN MANIFOLD

8.HIGH PRESSURE FUEL SUPPLY LINES

9.BOSCH@ CLOSED NOZZLE INJECTORS

10.FUEL RETURN TO SUPPLY TANKS

AIR INTAKE SYSTEM

AIR SYSTEM

AIR SYSTEM COMPONENTS

Precleaner

Air Filters

Filter Service Indicator

Turbochargers

Aftercooler

Intake & Exhaust Manifolds

Muffler

Air System Operation

Flow1. Precleaner2. Air Filters3. Turbocharger4. Intake Manifold &

Cylinder Head(s)5. Combustion Chamber6. Exhaust Manifold

WearTurbocharger

BearingsSeals

Common Engine Terms Common Engine Terms

>Bore

>Stroke

>Compression Ratio

>Displacement

>Horsepower

Bore Size

>The diameter of the cylinder

>Measured in inches or millimeters

Stroke

>How far the piston moves from TDC to BDC

>Equal to twice the crank radius

Compression Ratio Compression Ratio

> Ratio between the cylinder volume with the piston at BDC and the volume with the piston at TDC Compression ratio of our engines are approximately a 16:1 (non-ACERT) and 18:1 (ACERT)

Compression Ratio Compression Ratio

> Ratio between the cylinder volume with the piston at BDC and the volume with the piston at TDC Compression ratio of our engines are approximately a 16:1 (non-ACERT) and 18:1 (ACERT)

Displacement

Engine size is expressed in liters or cubic inches

Displacement = X Stroke X No. of Cyls. (3.14 X B 2 )

4

HorsepowerHorsepower is the rate of doing work (how

quickly a force is applied through a distance)

Horsepower can be expressed in pound feet per second

1 horsepower = 550 lb/ft per second = 33,000 lb/ft per

minute

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