| With the development of high speed, high compression ratio, high compression ratio, high power, low fuel consumption and low emission, the traditional ignition device has not adapted to the use requirements. The core component of the ignition device is the ignition coil and the switching device, which can improve the energy of the ignition coil, and the spark plug can produce enough energy. This is the basic condition for the ignition device to adapt to the modern engine operation. There are two sets of coils, primary and secondary coils in the common ignition coil. The primary coil is used for a thicker wire, which is usually about 0.5-1 mm or so of the wire wound around 200-500. The secondary coil is coated with a thin wire, which is about 0.1 mm. One end of the primary coil is connected with a low voltage power supply (+) on the vehicle and the other end is connected with the switching device (off the appliance). One end of the secondary coil is connected with the primary coil, and the other end of the secondary coil is connected with the output terminal of the high voltage line. The ignition coil is divided into two kinds of magnetic field and magnetic field. Open circuit ignition coil Open circuit ignition coil is generally a tank structure. It is laminated with a few pieces of silicon steel sheets, and the secondary coil and primary coil are wound around the core. Secondary coil is 0. 05 ~ 1mm enameled wire, the number of turns of 2 ~ 30 thousand Quanchen. The diameter of the primary coil is 0. 5 ~ 1. 0mm, compared with the secondary coil, and the number of turns is only 150 ~ 300 laps. The primary coil is wound in the outer side of the secondary coil, and the magnetic flux generated by the secondary coil is identical to that of the primary coil. The primary coil and the secondary coil are the same in the direction of the coil, and the end of the second pole is connected with the starting end of the primary coil and connected to the housing "+" column, and the end of the primary coil is connected with the "one" column of the housing and is connected to the collector of the power transistor. Closed magnetic circuit ignition coil The core ignition coil with closed magnetic circuit is closed, all through the core magnetic flux, magnetic core capacity is about ten thousand times the air, so the open magnetic circuit ignition coil for ignition coil with closed magnetic circuit flux is the same, the primary coil is magnetomotive force larger (An Peiza number) can not be. Therefore, must use the turn number of the primary coil diameter is bigger; the number of turns of the primary coil, if you want to get the same number of turns of Morrison ratio, number of turns of the secondary coil is also increased, therefore, the miniaturization of open magnetic circuit of the ignition coil is impossible to. On the other hand, the ignition coil with closed magnetic circuit, the reluctance is small, can effectively reduce the magnetomotive force of the coil, the ignition coil miniaturization. At present, the ignition coil with closed magnetic circuit is quite small, and can even be made one igniter, spark and connecting body. Combustible gas compressed gas in the cylinder of spark plug. The traditional ignition coil is used to open the magnetic type, the iron core with 0.3 mm silicon steel sheets, iron core on the secondary and primary coil. The closed magnetic core of the primary coil shape around the outside, and then around the secondary coil, magnetic core by closed magnetic circuit. The magnetic ignition coil has the advantages of less leakage, less energy loss, small volume and so on. |
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