The difference between the ignition coil and ordinary transformer
As car petrol engine to high speed, high compression ratio, high power, low fuel consumption and low emissions in the direction of the development of the traditional ignition system has not adapt to the use requirement. Ignition device is the most important parts in ignition coil and switch device, improve the energy of the ignition coils, spark plug can produce enough energy spark, it is the basic condition of ignition system to adapt to the modern engine running, so that the difference between our automobile ignition coil and the ordinary transformer also showed up. Usually the car ignition coil, there are two groups of coil primary coil and secondary coil. Primary coil with coarser enameled wire, usually with 0. 5 - Enameled wire around 200 - around 1 mm About 500 turns; Secondary coil with a finer enameled wire, usually with 0. Enameled wire around 15000 - around 1 mm About 25000 turns. Primary coil low-voltage power supply connection at one end and the car, the other end with the switching device. With the primary coil, secondary coil end at the other end with the high tension line output high voltage output terminal connection. Ignition coil can will become high voltage low voltage electric car, is due to have the same form with ordinary transformer, the number of turns of the primary coil and secondary coil. But works on the ignition coil is different from the ordinary transformer, general transformer is a continuous work, while the ignition coil is intermittent, it according to the different rotating speed of the engine at a different frequency for energy storage and put over and over again. When the primary coil processing power, as the growth of the current around to create a strong magnetic field, an alternating magnetic field to store the can; When the switch device makes the primary coil circuit disconnect, primary coil magnetic field decay quickly, secondary coil will be induced high voltage. The faster the primary coil of the magnetic field disappeared, disconnect instantaneous current, the greater the two coil turns ratio, the greater the secondary coil induction out the higher voltage. Our ignition coil with the ordinary transformer is the distinction that having essence, but they are as an important structure of auto parts, they are at work is not only work independently, work and cooperate with each other, so the connection between them still more.