Spark plug
Inlet valve
Exhaust valve
Cylinder
Piston
The four-stroke engine
Inlet valve open
INDUCTION STROKE
The four-stroke engine
Inlet valve open
Piston down INDUCTION STROKE
The four-stroke engine
Inlet valve open
Piston down INDUCTION STROKE
The four-stroke engine
Fuel in
Inlet valve open
Piston down INDUCTION STROKE
The four-stroke engine
Fuel in
Inlet valve open
Fuel in
The four-stroke engine
INDUCTION STROKE
Inlet valve closed
COMPRESSION STROKE
The four-stroke engine
Piston up
Inlet valve closed
COMPRESSION STROKE
The four-stroke engine
Piston up
Inlet valve closed
COMPRESSION STROKE
The four-stroke engine
Piston up
Inlet valve closed
POWER STROKE
The four-stroke engine
BANG
Inlet valve closed
POWER STROKE
The four-stroke engine
Piston downpowerfully
Inlet valve closed
POWER STROKE
The four-stroke engine
Piston downpowerfully
Inlet valve closed
POWER STROKE
The four-stroke engine
Inlet valve closed
EXHAUST STROKE
The four-stroke engine
Exhaust valve open
Inlet valve closed
EXHAUST STROKE
The four-stroke engine
Exhaust valve open
Piston up
Exhaust gasesout
Inlet valve closed
EXHAUST STROKE
The four-stroke engine
Exhaust valve open
Piston up
Exhaust gasesout
Inlet valve open
INDUCTION STROKE
The four-stroke engine
Exhaust valve closed
And so the cycle
continues!!
