Motorcycle Ignition Coil High Pressure Test Fire
Motorcycle Ignition Coil High pressure test fire
Ignition coil is very easy to determine the method are:
1, intuitive to judge: point by observing the appearance of the ignition coil, if abnormal material spill, insulation cover or shell rupture, should be replaced. (Caused by the above phenomenon and power system abnormalities related to, such as ECU control signal anomalies, plug harness damage to the ground, etc.) high-pressure output side of the phenomenon of ablation and other phenomena should be replaced.
2, high-pressure test fire: the spark plug end high-voltage wire head pull out, thread placed from the cylinder 3-6 mm, or with spare parts spark plugs and high-voltage wire harness connection (spark plug thread parts to the cylinder), start the engine test fire, Or sparks are not continuous, you should replace the ignition coil. (For high pressure test, you should first confirm whether the control signal is normal, and should do the insulation protection work, direct contact with the high voltage line is easy to cause electric shock.
3, the replacement method: the use of the same specifications, good performance of the coil instead of the failure of the coil can be compared to judge. If the fault is removed after the replacement, it means that the replaced coil may be damaged. (When this method is used, if the connection is unreliable due to reloading is fixed, or high-voltage lines, plug leakage point because of re-assembly with the previous easy to discharge connection point change, it may affect the Judgment. At this point the coil can be installed on other vehicles to carry out fault recovery, so the final confirmation.) Ignition coil structure:
Ignition coil mainly by the core, winding, bakelite cover, porcelain cup and other components;
(1) The core is made of mutually insulated strip-shaped silicon steel, which is separated by an oxidized oil layer or an insulating layer. The outer layer has an insulating sleeve, and its effect is to enhance the magnetic flux.
(2) the primary winding wire diameter of 0.5 ~ 1.0mm enameled wire layer around the outer layer of the primary winding to facilitate heat dissipation, the primary winding is 230 ~ 370 turns. Outside also covered with several layers of insulating paper to enhance insulation. After winding around the vacuum immersed in paraffin and rosin mixture, to further strengthen the insulation. The primary winding is the role of the use of current changes within the winding to achieve electromagnetic induction.
(3) secondary winding wire diameter of 0.06 ~ 0.10mm enameled wire around the core insulation sleeve, about 11000 ~ 26000 turns. To enhance insulation and mechanical damage, each layer of wire are separated by insulating paper, the outer layer of the number of layers of insulating paper, or put on the cardboard casing. Its role is to produce mutual inductance electromotive force.
(4) steel sleeve between the primary winding and the shell is equipped with magnetic steel casing. With a magnetic steel roll into a cylindrical shape, constitute a part of the magnetic circuit, the core to form a semi-enclosed magnetic circuit, reducing leakage of magnetic.
(5) filler for the strengthening of insulation and to prevent moisture immersion, filled in the shell asphalt or transformer oil, fill the transformer oil, the coil heat dissipation is better, the temperature rise is low, and the insulation is good. In recent years also use sulfur hexafluoride (SF6) and other gas insulation or plastic molding insulation.
(6) Additional resistance Three-way ignition The cylindrical housing is fitted with an additional resistor, and the additional resistor is connected to the "+ switch" and "switch" posts on the bakelite cover at both ends, which improves the ignition performance. Two-column ignition coil without additional resistance, in the ignition switch and ignition coil "+" then between the column, connected to an additional resistance line.