Do you know the reason why the car ignition coil always burns out?

1. Principle of ignition coil


It is composed of main coil, secondary coil, magnetic core, switch triode and other auxiliary components. The main coil is charged by the battery, the secondary coil discharges the spark plug and ignites, and the triode is responsible for switching. The charging time is controlled by the battery voltage and the engine speed to ensure that the energy of each charge is consistent. There are two types of ignition coils: 3-wire and 4-wire. The 3-wire is the power supply positive, negative, switch control (ECU command), and the 4-wire has an additional ignition detection Wire, able to detect whether the spark plug ignites (whether there is 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 raised to tens of thousands of volts, but the voltage input to the primary coil is provided by the electronic igniter.


2. Reasons for burning out the ignition coil


The main reason for the burnout of the ignition coil is the aging and breakdown of the insulating layer or the damage of the switch triode. The large gap between the spark plugs leads to a large load on the main coil, high heat generation, and rapid aging of the insulating layer. The small spark plug gap leads to a large discharge current of the secondary coil. Fast, the assembled ignition coil may have poor durability of insulating materials, large internal resistance of the coil, large heat generation, low quality of the tertiary tube, etc., and the service life will be shorter.


If it is always burned out, it will burn out soon after replacement. What is the reason? Here are some of them:


1. Let's first look at the problem of the generator. If the power generation is too high, the ignition coil will be easily burned out if the load is too heavy. 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 problem of accessories, so it is best to measure the power generation first.


3. The spark plug gap is too large, adjust the gap or replace the spark plug;


4. If the gasoline quality is not good, try changing the gasoline with a higher grade;


5. The cylinder compression ratio is wrong, adjust the compression ratio;


6. If there is a program failure on the computer board, you can go to the repair shop to use the computer to check the car and clear the wrong information. If it still doesn't work, there may be a problem with your car's transmission;

7. The power supply voltage is unstable;


8. The resistance of the high-voltage line is abnormal, replace the high-voltage line;


9. There is a short circuit in the secondary;


10. The primary current of the ignition controller is too high, causing the ignition coil to overheat;


11. It does not work well due to high temperature and high pressure waves;


12. There is a very small chance that the coil itself is the problem, you can try another brand;


13. The ignition integrated block is not working well;


The ignition coil itself is a transformer, which is like a transformer in a household appliance. When the voltage changes within the specified range, the transformer will not be burned. Usually, the transformer will be burned when the transformer is overloaded. This happens, so When solving this problem, we should try our best to find out the cause of the overload or the aging of the components.


If there is no fire or weak sparks suddenly during driving, an infrared thermometer or hand touch can be used to determine whether the ignition coil or ignition module has an internal short circuit or open circuit fault. When judging the fault, it can also be restarted. No matter whether it can be started or not, the temperature of the ignition coil casing can be measured to judge.


①The ignition coil is overheated: the surface temperature of the ignition coil is greater than 95℃, indicating that the ignition coil is short-circuited and must be replaced.


②Ignition coil is too cold: The surface temperature of the ignition coil is equal to the ambient temperature at startup, indicating that the ignition coil is broken inside and must be replaced.


③ Overheating of the ignition module: the temperature of the ignition module is higher than 100 ℃, indicating that the ignition module is short-circuited and must be replaced.


④Ignition module is too cold: The ignition module and ambient temperature are equal at startup, indicating that the ignition module is internally open and must be replaced.


Haiyan is a professional ignition coil supplier in China, with years of manufacturing and wholesale experience, welcome to contact us!

Comments

Post a Comment

Popular posts from this blog

rufio costume

I \'ve been making Halloween costumes for my brother for years, and the challenge this year is Rufio in the movie Hook. Here you will find all the steps to make this outfit and I hope you like it! Supply: Black artificial leather, black canvas fabric, fusible interface, red fabric, black thread, black embroidery thread, sewing machine, wood beads, embroidery needle, scissors, iron, drill pin, colored pencil and paper. I first watched the movie Hook and outlined the idea of how the jacket should be constructed. Once I had a decent sketch and had a good idea of how to make it, I started making the pattern. Because the dress was made for my brother, I used him as a model and put a few pieces of scrap cloth on him with a pin to make the shape of the jacket. Once the shape is implemented and all the seams are marked, I transfer this design to the paper pattern. Before I used any of my good fabrics, I made a sample jacket for the test fit. Once it was decided to fit, I started cutting th...
Read more

10 Tips to Ordering Kitchen Cabinets Online

1. Choose an established kitchen cabinet supplier Look for a supplier that's been around for some time. An established supplier will have years of experience and have gained plenty of valuable information about kitchen cabinets and kitchen design. That will make it easy for them to give you advice when it comes to choosing the right cabinets for your home. Also, a custom kitchen cabinet supplier that's been around for some time means the business is likely to be stable and enjoys a good track record. So you won't have to worry too much about being scammed into buying poor quality products. 2. Check the company's quality control system and manufacturing capabilities Find suppliers who actually make kitchen cabinets. Quality suppliers should be able to consistently produce products that meet or exceed customer expectations. The only reliable way to check a supplier's capabilities is to visit the production facility in person or through a third-party agent. Reputable ...
Read more

Guangdong NEW ENERGY Technology Development

Guangdong NEW ENERGY Technology Development Co.,Ltd(Guangdong NEW ENERGY Group), located at Guangzhou City, is the China-Singapore Joint Venture established in 2003, with three main modern manufacturing factory covering 580,000 square meters, 1,200,000 units production ability and over 1,500 employees. Heat pump manufacturer NEW ENERGY Technology has created a number of successful series, and heat pump supplier is one of them.NEW ENERGY Technology carries out strict quality monitoring and cost control on each production link of heat pump supplier, from raw material purchase, production and processing and finished product delivery to packaging and transportation. This effectively ensures the product has better quality and more favorable price than other products in the industry.NEW ENERGY Technology has a professional technical team and exquisite processing technique. We produce various commercial heat pump according to customers' needs. We provide professional and efficient ODM/O...
Read more