Four Stroke Cycle has the following parts air and fuel, intake valve, spark plug, exhaust valve, combustion chamber, piston and crankshaft.
Four Stroke Cycle has four stroke mainly intake stroke, compression stroke, power stroke and exhaust stroke.
Intake stroke is when piston move downward from top dead center to bottom dead center producing a suction force to draw air and fuel mixer to inter in cylinder from carburetor. The intake valve is open allowing mixture of fuel get into cylinder. The exhaust valve is close to let only mixture get in.
Compression stroke is when the piston moves upward from bottom dead center to top dead center pushing the air and fuel mixture to get into a small space to prepare for combustion. The intake and exhaust valves are both close to ensure that no mixture of fuel escape from cylinder. At the end of this stroke, the spark plug delivers spark to ignite the fuel mixture until compression ends. In diesel engine, purely air is compressed to raise temperature and diesel fuel is injected at end of the stroke.
Power stroke is when the piston moves downward from top dead center to bottom dead center cause by the pressure produce by combustion or burning of fuel mixture. This is the source of power of an engine. The intake and exhaust valve are both close that no power can escape from the cylinder. Leakage of power during this stroke result to a low performance engine or lack of power.
Exhaust stroke when the piston moves upward from bottom dead center to top dead center pushing the burned gasses to get out of the cylinder. The intake valve is close and exhaust valve is open making a away for the exhaust gas to get out. At exactly end of this stroke, exhaust valve closes.
Intake stroke is when piston move downward from top dead center to bottom dead center producing a suction force to draw air and fuel mixer to inter in cylinder from carburetor. The intake valve is open allowing mixture of fuel get into cylinder. The exhaust valve is close to let only mixture get in.
Compression stroke is when the piston moves upward from bottom dead center to top dead center pushing the air and fuel mixture to get into a small space to prepare for combustion. The intake and exhaust valves are both close to ensure that no mixture of fuel escape from cylinder. At the end of this stroke, the spark plug delivers spark to ignite the fuel mixture until compression ends. In diesel engine, purely air is compressed to raise temperature and diesel fuel is injected at end of the stroke.
Power stroke is when the piston moves downward from top dead center to bottom dead center cause by the pressure produce by combustion or burning of fuel mixture. This is the source of power of an engine. The intake and exhaust valve are both close that no power can escape from the cylinder. Leakage of power during this stroke result to a low performance engine or lack of power.
Exhaust stroke when the piston moves upward from bottom dead center to top dead center pushing the burned gasses to get out of the cylinder. The intake valve is close and exhaust valve is open making a away for the exhaust gas to get out. At exactly end of this stroke, exhaust valve closes.
