1. The working mode of the ignition coil is different from that of the ordinary transformer. The ordinary transformer works continuously, while the ignition coil works intermittently. It repeatedly stores and discharges energy at different frequencies according to different engine speeds.
2. When the primary coil is powered on, a strong magnetic field is generated around with the increase of current, and the iron core stores the magnetic field energy; when the switching device disconnects the primary coil circuit, the magnetic field of the primary coil decays rapidly, and the secondary The coil induces a very high voltage. The faster the magnetic field of the primary coil disappears, the greater the current at the moment when the current is disconnected, and the greater the turns ratio of the two coils, the higher the voltage induced by the secondary coil.
3. With the development of automobile gasoline engines in the direction of high speed, high compression ratio, high power, low fuel consumption, and low emission, the traditional ignition device is no longer suitable for use. The core components of the ignition device are the ignition coil and the switch device. By increasing the energy of the ignition coil, the spark plug can generate sparks with sufficient energy, which is the basic condition for the ignition device to adapt to the operation of modern engines.