Parts in alphabetical order.
No. | Parts | Definition/Function |
1 | Connecting Rod | · Changes the reciprocating motion of piston into rotary motion at crankshaft · Transmits the power produced at piston to crankshaft |
2 | Cylinder Block | · Holds engine component (pistons, cylinders, camshaft and oil pump) · Hold crankshaft that converts rotating motion to reciprocating motion |
3 | Cylinder Head (4-stroke) | · Carries inlet and exhaust valve. · An injector is also mounted on cylinder head |
4 | Cylinder Liner | · Forms a sliding surface for the piston rings while retaining the lubricant within · Receives combustion heat through the piston and piston rings and transmits the heat to the coolant. · Prevents the compressed gas and combustion gas from escaping |
5 | Crank Pin | · Transfer power and motion to the crank shaft which come from piston through connecting rod |
6 | Crank Shaft | · Receives oscillating motion from connecting rod and gives a rotary motion to the main shaft. · Drives the camshaft which actuate the valves of the engine |
7 | Cam Shaft | · Takes driving force from crankshaft through gear chain · Operates the inlet and exhaust valve with the help of cam followers,push rod and rocker arms |
8 | Crosshead | · A beam that connects the piston rod to the connecting rod |
9 | Crosshead Guide | · Allowing the crosshead to only move in the same direction as the piston travel |
10 | Fuel Injector | · Delivers fuel in fine spray under pressure |
11 | Fuel Pump | · Deliver metered amount of fuel into cylinder through fuel delivery pipe & fuel injector |
12 | Inlet Valve & Exhaust Valve (4-stroke) | · Inlet valve allow the fresh charge of air-fuel mixture to enter the cylinder bore · Exhaust valve permits the burnt gases to escape from the cylinder bore at proper timing |
13 | Gudgeon Pin (4-Stroke) | · Connects the piston with small end of connecting rod. |
14 | Governor | · Controls the speed of engine at a different load by regulating fuel supply in diesel engine. |
15 | Piston Rings | · Prevents the compressed charge of fuel-air mixture from leaking to the other side of the piston. · Oil rings used for removing lubricating oil from the cylinder after lubrication. · Prevents the excess oil to mix with charge. |
16 | Piston Skirt | · Carries gudgeon pin and rub against liner. |
17 | Push rod & Rocker arm (4-stroke) | · Push rods sit on the cam so when engine is running · Push rods go up and down in a timed sequence and with the rocker arms, open and close the inlet and exhaust valves. |
18 | Piston | · Compresses air in between cylinder head and piston crown. |
19 | Scavenge Ports (2-stroke) | · Pushes exhausted gas-charge out of the cylinder · Draw in a fresh draught of air ready for the next cycle. |
20 | Stuffing Box | · A type of seal that prevents fluids from leaking inside of machine parts. |
21 | Turbocharger | · A device that uses the energy of exhaust gases coming out from an engine to compress the air going into the engine. |
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The only difference between both these engines is the cause of the explosion. A spark from the spark plug causes the ignition in a petrol engine whereas in a diesel engine, the heat generated in the chamber causes the fuel to get ignited. See more here Engine Parts . . .
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