Reciprocating Engine strokes: Intake - Compression - Power - Exhaust ✈️

Описание: Most small airplanes use reciprocating engines. “Reciprocating” just means it transforms RADIAL motion into ROTATIONAL motion. These engines burn a mixture of fuel and air in the cylinders using 4 strokes. These strokes convert chemical energy into mechanical energy during the four-stroke cycles. The intake, compression, power, and exhaust processes occur in four separate strokes of the piston in the following order:

1) The INTAKE stroke begins as the piston moves away from the cylinder head. The intake valve opens and the fuel-air mixture is drawn into the cylinder.

2) The COMPRESSION stroke begins when the intake valve closes, and the piston starts moving back toward the cylinder head. This phase of the cycle is used to obtain a much greater power output from the fuel-air mixture once it is ignited.

3) The POWER stroke begins when the fuel-air mixture is ignited. This causes a tremendous pressure increase in the cylinder and forces the piston away from the cylinder head, creating the power that turns the crankshaft.

4) The EXHAUST stroke is used to purge the cylinder of burned gases. It begins when the exhaust valve opens, and the piston starts moving toward the cylinder head once again.

This back-and-forth motion of the pistons is converted to a rotary motion of the crankshaft, which drives the propeller. ✈️

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