Alex The Four Stroke Operating Cycle Flashcards
The Four-Stroke Operating Cycle
**The Four-Stroke Operating Cycle - **In almost all reciprocating airplane engines, the continuos energy-creating process is referred to as the four-stroke operating cycle. The steps in this cycle are: the intake of the fuel/air mixture, the compression by the piston, the ignition and expansion of the gases, and the venting of the burned gases. Even when the engine is operated at a fairly slow speed, the four-stroke cycle takes place several hundred times each minute. In a four-cylinder engine, each cylinder operates on a different stroke. Continuous rotation of the crankshaft is maintained by the precise timing of the power strokes in each cylinder. Continuous operation of the engine as a whole is dependent on the simultaneous function of ancillary systems including the induction, ignition, fuel, oil, cooling, and exhaust systems.
The Four-Stroke Operating Cycle consists of
Most reciprocating engines use a four-stroke operating cycle.
INTAKE - When the piston moves away from the cylinder head on the intake stroke, the intake valve opens and the fuel/air mixture is drawn into the compression chamber.
The Four-Stroke Operating Cycle is used by
The Four-Stroke Operating Cycle is used by most reciprocating engines.
The Four-Stroke Operating Cycle consists of
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
The Four-Stroke Operating Cycle consists of
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
INTAKE - When the piston moves away from the cylinder head on the intake stroke, the intake valve opens and the fuel/air mixture is drawn into the compression chamber.
COMPRESSION - As the piston moves back toward the cylinder head, the intake valve closes and the fuel/air mixture is compressed.
POWER - When compression is nearly complete, the spark plugs fire and the compressed mixture is ignited to begin the power stroke. The rapidly expanding gases from the controlled burning of the fuel/air mixture drive the piston, providing the power that rotates the crankshaft.
EXHAUST - The exhaust stroke expels the burned gases from the chamber through the opened exhaust valve.
The Four-Stroke Operating Cycle consists of INTAKE
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
The Four-Stroke Operating Cycle consists of
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
INTAKE - When the piston moves away from the cylinder head on the intake stroke, the intake valve opens and the fuel/air mixture is drawn into the compression chamber.
The Four-Stroke Operating Cycle consists of COMPRESSION
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
The Four-Stroke Operating Cycle consists of COMPRESSION
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
COMPRESSION - As the piston moves back toward the cylinder head, the intake valve closes and the fuel/air mixture is compressed.
The Four-Stroke Operating Cycle consists of POWER
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
The Four-Stroke Operating Cycle consists of POWER
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
POWER - When compression is nearly complete, the spark plugs fire and the compressed mixture is ignited to begin the power stroke. The rapidly expanding gases from the controlled burning of the fuel/air mixture drive the piston, providing the power that rotates the crankshaft.
The Four-Stroke Operating Cycle consists of EXHAUST
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
The Four-Stroke Operating Cycle consists of EXHAUST
Most reciprocating engines use a four-stroke operating cycle. INTAKE, COMPRESSION, POWER, and EXHAUST
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EXHAUST - The exhaust stroke expels the burned gases from the chamber through the opened exhaust valve.
