What power does stroke produce?
Combustion-power-expansion stroke The combustion stroke is the third phase, where the ignited air-fuel mixture expands and pushes the piston downwards. The force created by this expansion is what creates an engine’s power.
Is a 2-stroke more powerful?
Because 2-stroke engines are designed to run at a higher RPM, they also tend to wear out faster; a 4-stroke engine is generally more durable. That being said, 2-stroke engines are more powerful. Two-stroke engines are a much simpler design, making them easier to fix. They do not have valves, but rather ports.
How do you calculate power stroke?
The number of power strokes per second is the same as the rev/s for a 2-stroke engine, because there is a power stroke every revolution of the crank. For a 4-stroke engine, n is the rev/s divided by 2 because there is a power stroke once every two revolutions of the crank.
Which engine is more efficiency 2-stroke or 4-stroke?
Compared to four stroke engines, two strokes are lighter, more efficient, have the ability to use lower-grade fuel, and more cost-efficient. Therefore, the lighter engines results in a higher power-to-weight ratio (more power for less weight).
What happens to the air-fuel mixture in exhaust stroke?
Fuel Chemistry During the intake stroke, the fuel and air mixture is drawn into the cylinder with the exhaust valve closed. Then the air and fuel mixture is compressed in a compression stroke. At the top of the stroke, the spark plug ignites the mixture.
Why do 2-strokes make more power?
Because combustion takes place with each revolution of the crankshaft with a 2-stroke, this format puts out more power than a 4-stroke engine and the power has more instantaneous delivery. This are some reasons why 2-stroke engines have a long history of use on many different types of motorcycles.
Why are 2-strokes so fast?
Two-stroke engine bikes are lighter and faster bikes that have an intense kick to the motor. This makes it easier to throw around your bike with the faster punch per cc. Two-strokes also require more frequent shifting, but riders can get a faster top speed with more power.
How do you calculate the power of a 2 stroke engine?
How to calculate power of Main Engine (2 stroke engine)?
- Power card or PV diagram can be used to measure indicated power in diesel engines.
- Work done in one cycle = Mean Indicated Pressure x Area of the Piston x Length of stroke = [Pm] x [A] x [L]
- Indicated Power of Unit = Pm L A N.
What happens to the air fuel mixture power stroke?
At the top of the stroke, the spark plug ignites the mixture. During the expansion or power stroke, the high-pressure combustion gases expand moving the piston down and delivering the power. The gases expand completely, the exhaust valve opens, and the gases are expelled out during the exhaust stroke.
Does 2-stroke use more gas?
2-strokes are more fuel efficient than 4-strokes when run at or just above idle, and again above three-quarter throttle, because the fuel is being monitored so precisely. The two engine types consume about the same amount of fuel in the middle of the rpm range, he says.