The ignition system

1) The ignition advance Angle

Burning in the gasoline engine is rapidly, but there are always some burning time.When gas ignition ignition, as the combustion, the temperature and pressure of the gas increases.At the end of the basic combustion, heat the gas temperature is falling, falling also lower the temperature.Always exists between rise and fall, one of the biggest gas pressure in maximum stress of crankshaft position called maximum combustion pressure point.From the point of ignition to maximum pressure crankshaft turned a certain Angle.Determines the maximum pressure point, also is a little more sure fire.The above check points as a benchmark of ignition Angle according to the ignition advance Angle.  

If the maximum pressure point to produce before the top dead center, may produce reversal of the crankshaft.Maximum pressure point too close, after the check point on parts by the huge impact, vulnerable to damage, but not to promote the role of crank shaft transmission, small gasoline engine power, noise big, said ignition too early.Maximum pressure point too far, after the check point on the crankshaft driven by gas expansion force Angle is reduced, and the maximum combustion pressure is small, too small gasoline engine power, according to the ignition is too late.Only the biggest pressure points now about 15 o after the check point, the best gasoline engine power, can achieve such requirements of the ignition phase Angle is the best ignition Angle.  

For a gasoline engine, the optimum ignition advance Angle is not a fixed value, it should be with the increase of the crankshaft speed to be slightly more, should also changes over load.In addition to indicate the specific speed, generally indicate the ignition advance Angle refers to the idle speed when the ignition advance Angle.

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