The ignition coil itself is a transformer, which is like the transformer in household appliances. When the voltage changes within the specified range, it will not burn the transformer. Usually, burning the transformer will cause this situation when the transformer is overloaded, so When solving this problem, we must try to find out the cause of overload or component aging.
First we understand the principle of the ignition coil
It consists of a main coil, a secondary coil, a magnetic core, a switching triode and other auxiliary components. The main coil is charged by a battery, the secondary coil discharge spark plug is ignited, and the triode is responsible for switching. The charging time is controlled by the battery voltage and engine speed to ensure the same energy per charge. There are two types of ignition coils: 3 and 4 wires. The 3 wire is the power supply positive, negative, and switch control (ECU command). An additional ignition test is provided on the 4 wire. Line, can detect whether the spark plug is ignited (there is a discharge current in the secondary coil).
To put it simply, the ignition coil is a transformer, that is, the voltage of tens of volts is increased to tens of thousands of volts, but the voltage input to the primary coil is provided by the electronic igniter.
Causes of ignition coil burnout
The ignition coil burns out mainly due to aging of the insulation layer or damage to the switching transistor. The spark plug gap will cause the main coil to have a large load and heat, and the insulation layer will age quickly. The small spark plug gap will cause the secondary coil to have a large discharge current, heat generation, and insulation layer. Fast, the assembled ignition coil may have poor durability of the insulating material, large internal resistance of the coil, high heat generation, and low quality of the tertiary tube, and the life will be shorter.
After the ignition coil is replaced, it burns out, and it always burns out. What is the reason? Below we can analyze from the following aspects
1. First look at the problem of the generator. If the power generation is too high, the ignition coil is overloaded and it is easy to burn out. However, if the power generation is too high, the body electrical appliances, such as light bulbs, will often be damaged; of course It does not rule out the quality of the accessories, so it is best to measure the power generation first.
2. The spark plug gap is too large. Adjust the gap or replace the spark plug.
3. The quality of gasoline is not good. Try a higher grade gasoline.
4. The compression ratio of the cylinder is incorrect. Adjust the compression ratio.
5. The computer board has a program failure. You can go to the repair shop to use a computer to test the car and clear the error information. If not, it may be a problem with your car’s transmission.
6. The power supply voltage is unstable;
7. The resistance of the high-voltage line is abnormal. Replace the high-voltage line.
8. The secondary has a short circuit phenomenon;
9. The primary current of the ignition controller is too high, which causes the ignition coil to overheat;
10. It is not good to work under high temperature and high pressure wave;
11, very small chance is the coil itself, you can try another brand;
12.Ignition block is not working well;
vika electronic ignition coil, which has the following advantages:
1. Use Elektrisola insulated wire, with a high temperature resistance of 180 ℃ and a service life of at least 240 hours.
2. Imported material PPE from Japan, electrical strength: 33KV / mm, high temperature resistance 180 ℃.
3. 100% epoxy resin from Japan Kyocera epoxy resin, good air permeability, high insulation performance. Avoid cracking the resin and causing ignition failure.
4. Use Momentive silicone, pressure: 35000 V, temperature: 280 degrees.
The high-quality performance of vika ignition coils is suitable for Skoda, Volkswagen, Audi cars.