Q
how does a four cycle engine work
I'm a seasoned industrial engineer with a keen interest in machine learning. Here to share insights on latest industry trends.
A four-cycle engine, also known as a four-stroke engine, works through a process of four specific phases: intake, compression, combustion/power, and exhaust. These phases occur in a cycle that repeats itself, driving the movement of the vehicle.
1. Intake Stroke: The cycle begins with the intake stroke in which the piston moves down the engine cylinder while the intake valve opens. This creates a partial vacuum that sucks in a mixture of air and fuel.
2. Compression Stroke: The intake valve closes, and the piston moves back up the engine, compressing the air-fuel mixture. Near the top of this stroke, the spark plug fires creating a tiny, controlled explosion that forces the piston to move down, driving the power stroke.
3. Power/Combustion Stroke: The ignited fuel-air mixture burns rapidly, greatly increasing the pressure within the engine and causes the piston to descend down the cylinder. This translates to a force on the connecting rod connected to the crankshaft and therefore generates torque on it.
4. Exhaust Stroke: Finally, the exhaust valve opens as the piston begins to ascend up the engine cylinder again. This forces out the combustion gases (exhaust). After the exhaust is expelled, the exhaust valve closes, the intake valve opens, and the entire process starts over again with the intake stroke.
In summary, four-stroke engines work by pulling in fuel, compressing it, igniting it to capture the energy released, and then venting the exhaust gases.
1. Intake Stroke: The cycle begins with the intake stroke in which the piston moves down the engine cylinder while the intake valve opens. This creates a partial vacuum that sucks in a mixture of air and fuel.
2. Compression Stroke: The intake valve closes, and the piston moves back up the engine, compressing the air-fuel mixture. Near the top of this stroke, the spark plug fires creating a tiny, controlled explosion that forces the piston to move down, driving the power stroke.
3. Power/Combustion Stroke: The ignited fuel-air mixture burns rapidly, greatly increasing the pressure within the engine and causes the piston to descend down the cylinder. This translates to a force on the connecting rod connected to the crankshaft and therefore generates torque on it.
4. Exhaust Stroke: Finally, the exhaust valve opens as the piston begins to ascend up the engine cylinder again. This forces out the combustion gases (exhaust). After the exhaust is expelled, the exhaust valve closes, the intake valve opens, and the entire process starts over again with the intake stroke.
In summary, four-stroke engines work by pulling in fuel, compressing it, igniting it to capture the energy released, and then venting the exhaust gases.
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