With the development of automobile gasoline engine 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 ignition coils and switching devices. By increasing the energy of the ignition coil, the spark plug can produce enough energy spark, which is the basic condition for the ignition device to adapt to the operation of modern engines.
The reason why the ignition coil can turn the low piezoelectric on the car into Gaodianya is due to the same form as the ordinary Transformer, and the ratio of the primary coil to the secondary coil is large. However, the ignition coil works differently from an ordinary Transformer. The ordinary Transformer works continuously, while the ignition coil works intermittently. It repeatedly stores energy and discharges energy at different frequencies according to the engine's different speeds.
When the primary coil is connected to the power supply, a strong magnetic field is generated around the increase of the current, and the core stores the magnetic field energy; When the switch device disconnects the primary coil circuit, the magnetic field of the primary coil rapidly attenuates, and the secondary coil senses a high voltage. The faster the magnetic field of the primary coil disappears, the greater the current at the moment of disconnection, and the larger the ratio of the two coils, the higher the voltage induced by the secondary coil.