4 Stroke Cycle
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Transcript of 4 Stroke Cycle
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7/26/2019 4 Stroke Cycle
1/1
Intake Stroke
Intake valve open.
Piston moves down (TDC to BDC) in cylinder.
Low pressure is created in cylinder.
Air is rou!"t into t"e comustion c"amer due to pressure
di#erences.
Compression Stroke
Both valves closed.
Piston moves from BDC to TDC
Air in combustion chamber is compressed, raising its
temperature.
Near TDC of Compression stroke, diesel fuel is injected into the
combustion chamber.
Power Stroke
Bot" valves are closed
Air$%uel mi&ture urns rapidly
'&pansion o% t"e urnin! air$%uel mi& applies %orce to t"e "ead o% t"e
piston
Piston is driven down in t"e cylinder.
'&"aust Stroke
Piston moves %rom BDC to TDC.
'&"aust valve is open.
Burnt air$%uel mi&ture is scaven!ed %rom comustion c"amer.