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one rotation
A stroke is half of a revolution.2 revs is 4 strokesone another is the samea 4 stroke engine goes through 2 revolutions to complete one cyclea cycle is an X number of strokes to complete combustion and power process in an internal combustion engine'The intake stroke is the first downward movement of the piston, half of a revolution. The next half of a rev is the compression stroke, then power stroke, and exhaust stroke.
Yes, if by "720 degrees of crankshaft rotation" you mean "two rotations" Here is a great animation of a four-stroke at work: http://www.animatedengines.com/otto.shtml
2 revolutions
The crankshaft makes two complete revolutions to complete one thermodynamic cycle. The crankshaft rotates 180 degrees during each stroke of the engine. Hence a total of two revolutions occur after completion of the four strokes. Chechout "www.howstuffworks.com " to see how crankshaft works.
It depends on the type of engine. In a four-stroke engine, there are four strokes - intake, compression, power (combustion), and exhaust - required to complete one full rotation of the crankshaft. In a two-stroke engine, there are two strokes - compression/ignition and exhaust - needed to complete one rotation.
A stroke is half of a revolution.2 revs is 4 strokesone another is the samea 4 stroke engine goes through 2 revolutions to complete one cyclea cycle is an X number of strokes to complete combustion and power process in an internal combustion engine'The intake stroke is the first downward movement of the piston, half of a revolution. The next half of a rev is the compression stroke, then power stroke, and exhaust stroke.
720 degrees
720 degrees
Both con-rod length and shape of the crankshaft affect piston stroke
Using directions like upwards in this context is meaningless because you haven't defined how the piston is oriented.During the compression stroke of a typical 4-stroke gasoline engine, the piston takes energy from the crankshaft. The reason the whole scheme still works is that you get a lot more energy back after the combustion during the power stroke. Add up the total energy moved between the piston and the crankshaft over a whole cycle (two rotations of the crankshaft), and you will find the total being positive from piston to crankshaft.
The length of the crankshaft throw is the stroke of the engine.