Which stroke is the power stroke?

1 Answers
DiReagan
07/29/25 1:30pm
The power stroke is the power stroke. A four-stroke internal combustion engine completes a working cycle within four strokes: intake, compression, power (expansion), and exhaust, during which the crankshaft rotates twice. Intake stroke: At this time, the intake valve opens and the exhaust valve closes. Air passing through the air filter, or the combustible mixture formed by mixing with gasoline in the carburetor, enters the cylinder through the intake pipe and intake valve; Compression stroke: The gas in the cylinder is compressed, increasing pressure and temperature; Power stroke: Before reaching the top dead center of compression, fuel is injected or ignited, causing the mixture to burn, generating high temperature and high pressure, pushing the piston downward and performing work; Exhaust stroke: The piston pushes the exhaust gas in the cylinder out through the exhaust valve. After this, the intake stroke begins again, starting the next working cycle.
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