The ignition coil is the core component of the automobile ignition system, and the automobile cannot be started without the ignition coil. Ignition coil is generally composed of main coil, secondary coil, magnetic core, switching transistor and other auxiliary components. The battery charges the main coil, the auxiliary coil discharges, the spark plug ignites, and the triode is responsible for the switch. The charging time of the main coil is controlled by the battery voltage and the engine speed.
When the primary coil is connected to the power supply, with the increase of current, a strong magnetic field will be generated around it, and the iron core stores the magnetic field energy. When the switching device disconnects the circuit of the primary coil, the magnetic field of the primary coil decays rapidly, and the secondary coil will induce high voltage. It is in such a high-pressure environment that the probability of ignition coil loss is several times that of other automobile parts, and ablation usually occurs.
If the ignition coil of the car is often burned out, it may be that there is something wrong with the generator. If the power generation is too high, the ignition coil will be easily burned out due to the heavy load, but at the same time, body appliances, such as light bulbs, will often be damaged because of the high power generation.
If the problem of the generator is eliminated, you can check whether the spark plug gap is too large. If the spark plug gap is too large, it will increase the load of the ignition coil, lead to aging of the insulation layer of the ignition coil and burn out the ignition coil. Need to adjust the spark plug gap or replace it with a new spark plug.
Of course, there are many and complicated reasons that cause the ignition coil to burn out. If the gasoline used is of poor quality, it will also cause the ignition coil to burn out, so it is necessary to replace the high-grade gasoline. It is also possible that there is a program failure on the computer board. You can go to the repair shop and use the computer to check the car and remove the wrong information.
The ignition coil itself is a transformer, just like the transformer in household appliances. When the voltage changes within the specified range, it will not burn out the transformer. Usually, burning the transformer will only cause this situation when the transformer is overloaded, so when solving this problem, we should try our best to find out the cause of overload or aging of components.