Ignition coil fault phenomenon

on the electric fire coil fault phenomenon:      ignition coil combustion voltage is low, or does not produce combustion voltage, will cause the engine idle instability, intermittent flameout, can not start. The common faults of ignition coil are:      1. ignition coil winding short circuit, will make the ignition coil voltage is too low, resulting in insufficient ignition energy, will cause spark plug electrode black too fast (often Carbon Deposition Pollution).      2. ignition coil open or ground, do not produce high voltage electricity, can not ignition.      3. ignition coil surface discharge refers to the spark ignition phenomenon on the outer surface of the ignition coil. The main cause of surface discharge is dirt on the surface and severe wetting. Surface discharge often occurs near the high pressure extraction screw, so the sheath between the high pressure extraction screw and the high voltage wire is usually equipped with sheath. When the surface discharge occurs, the burning traces can often be seen at the discharge part. When the burning loss is slight, the burning loss can be removed and the insulation treatment can be done well.      4. ignition coil insulation aging. The reason is hot after high temperature or high load under the condition of frequent ignition, the ignition coil temperature rises rapidly. The ignition coil insulation aging itself, so that the discharge short-circuit occurs in high temperature, high voltage ignition, lead to the number of turns of the coil primary winding and secondary winding of the actual voltage is smaller than that of the secondary winding to generate value reduced, fault caused by sudden flameout, speed can not go up. The working temperature of the ignition coil is generally no more than 80 degrees, otherwise the ignition coil will overheat. The overheating of the ignition coil will melt the insulating material inside the ignition coil and accelerate the ignition coil damage.

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