a basic overview on petrol engine

1. by ganesh palaniappan
mannaian
AN OVERVIEW ABOUT PETROL ENGINE

2. PARTS OF ENGINE
• CYLINDER
• CYLINDER HEAD
• PISTON
• PISTON RINGS
• GUDGEON PIN
• CONNECTING ROD
• CRANK
• CRANKSHAFT
• FLYWHEEL
• ENGINE BEARING
• GOVERNOR
• FUEL PUMP
• SPARK PLUG
• CARBURETTOR

3. PARTS AND THEIR FUNCTIONS
• CYLINDER
• CYLINDER HEAD
• PISTON
contains gas under
pressure and guides the
piston
seal the working head of
the cylinder and to
permit entry and exit of
gases
face to receive gas
pressure and transmit
thrust to connecting rod

4. • PISTON RINGS
• GUDGEON PIN
• CONNECTING ROD
• provides sealing fit
between piston and
cylinder
• supports and allows the
connecting rod to swivel
• transmits the piston
load to crank.converts
reciprocating motion of
piston into rotating
motion of crankshaft

5. • FLYWHEEL
• VALVES
• Takes cares of
fluctuations of speed
during thermodynamic
cycle
• two valves are there
inlet valve (admit the air
or air fuel mixture into
the cylinder)
outlet (discharge the
product of combustion)

6. • GOVERNOR
• CARBURETTOR
• The function of
governor is to keep the
speed of engine
constant irrespective of
the load on the engine
• The function of
carburettor is to
atomise the fuel and mix
as it enters the engine

7. • SPARK PLUG • The main function is to
conduct the high
potential from the
ignition system into the
combustion chamber