Monday, September 14, 2009
Where Is Vicodin Origin
is called four-stroke engine, which needs only four or sometimes five strokes of the piston or plunger - two complete revolutions of the crankshaft - to complete the thermodynamic cycle combustion . These four strokes are:
or admission Halftime: In this phase the descent of the piston sucks the air-fuel mixture in spark ignition engines or air-ignition engines compression. The exhaust valve remains closed, while the admission is open. In the first half gives the crankshaft 180 and camshaft gives 90 ° and the inlet valve is open and the race is downward. Second
time or compression: When you reach the lower limit, the inlet valve is closed, compressing the gas in the chamber by the rising piston. In the 2 nd time the crankshaft gives 360 degrees and gives camshaft 180, and also both valves are closed and his career is ascending. Third time
Explosion: When you reach the upper limit gas has reached the maximum pressure. In spark ignition engines, the spark in the spark plug causing inflammation of the mixture, while diesel engines are fuel injected with a syringe that will spontaneously by the existing temperature and pressure inside the cylinder. In both cases, once the burning started, it progresses rapidly increasing the temperature inside the cylinder and expanding gases push the piston. This is the only stage where you get work. At this time the crankshaft gives 180 ยบ while the camshaft gives 240 degrees, both valves are closed and his career is down. Fourth
time or escape: At this stage carefully push the piston in its upward movement, the combustion gases exiting through the exhaust valve remains open. When you reach the top career peak, close the valve and open the inlet, restarting the cycle. At this time the crankshaft gives 360 degrees and gives camshaft 180 and his career is ascending.
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