TECHNICAL SPECIFICATIONS ENGINE 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 : Four Stroke Direct Injection BOSCH IN-LINE Mechanical Water cooled
Engine An engine is motor which converts chemical energy into mechanical energy
The Combustion Process – 4 Stroke Cycle IntakeCompression
The Combustion Process – 4 Stroke Cycle PowerExhaust
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.
Turbocharger An exhaust driven air compressor Impeller on the left Turbine on the right Connecting shaft, free floating bearings, oil lubricated center housing
Aftercooling Heat 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 Pump Flow 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 Engine coolant flows from the water pump directly into the oil cooler Oil carries heat away from critical engine parts Heat is transferred from the oil to the engine coolant
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 KKSB COLD START INJECTION ADVANCE VE INJECTION PUMP 7.FUEL DRAIN MANIFOLD 8.HIGH PRESSURE FUEL SUPPLY LINES CLOSED NOZZLE INJECTORS 10.FUEL RETURN TO SUPPLY TANKS
AIR INTAKE SYSTEM
AIR SYSTEM COMPONENTS Precleaner Air Filters Filter Service Indicator Turbochargers Aftercooler Intake & Exhaust Manifolds Muffler
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 > 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
Horsepower Horsepower 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