Application of High Voltage Ignition Coils in Automobile Igniters
The high voltage line of the car transmits electrical energy through the ignition coil for the ignition of the spark plug. The car ignition coil, also known as the high voltage transformer, is the core component of the automobile ignition system, and it is also an indispensable part for us to start the car. The ignition of the car is inseparable from the work of the ignition coil.
The ignition coil is actually a transformer (there are primary winding, secondary winding, iron cores, insulated materials, etc.), and the function of the high voltage ignition coil is to convert the low voltage of 12 volts of the car power supply into the high voltage of 15-20KV. Car ignition systems use this high voltage electricity to ignite the mixture in the cylinders.
The current ignition system generally adopts a non-contact ignition system. The principle is: After the DC low voltage is inverted, doubled and rectified, it becomes a DC high voltage, and then the high voltage pass through the primary of the ignition coil intermittently, a high voltage (usually 20KV) is induced in the secondary of the ignition coil to rive the spark plug to discharge and ignite to provide energy to the engine.
There are usually two sets of coils in the ignition coil, the primary coil and the secondary coil. Use thicker enameled wire for the primary coil and thinner enameled wire for the secondary coil. The reason why the ignition coil can turn the low voltage on the vehicle into a high voltage is because it has the same form as the ordinary transformer, and the turns ratio of the primary coil and the secondary coil is large. The working mode of the ignition coil is different from that of the ordinary transformer. The working frequency of the ordinary transformer is fixed at 50Hz, also known as the power frequency transformer, The ignition coil of the car works in the form of pulse, which can be regarded as the pulse transformer. The rotational speed repeatedly stores and discharges energy at different frequencies.
