The problem of the life of the ignition coil, what causes the ignition coil to be damaged

Ignition coils are generally genuine products, requiring a service life of ten years or less than 100,000. If it is guaranteed for 5w kilometers a year, this quality should be okay, and the damage of automotive electrical products is often within one year of use. It can be used for more than one year, and the probability of damage is relatively low in the future.

The ignition coil is composed of the main coil, the secondary coil, the magnetic core, the switching triode and other auxiliary components, the main coil is charged by the battery, the secondary coil is discharged and the 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 that the energy of each charge is consistent, the ignition coil has two kinds: 3 wires and 4 wires, 3 wires are positive and negative for the power supply, and the switch controls the ECU instruction, and the 4 wires have an additional ignition detection line, which can detect whether the spark plug is ignited and whether 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 raised to tens of thousands of volts, but the voltage input to the primary coil is provided by the electronic ignition.

2: The reason why the ignition coil burns out.

Mainly the aging breakdown of the insulation layer or the damage of the switching triode, the large spark plug gap will lead to the main coil load, large heating, fast aging of the insulation layer, small spark plug gap leads to large discharge current of the secondary coil, fast heating, fast aging of the insulation layer, the assembled ignition coil may have poor durability of insulating materials, large internal resistance of the coil and fast heating, and the life of the transistor will be shorter if the quality is not high.

If it is always burned out, and it burns out soon after replacement, and why?

Let's take a look at the problem of the generator first, if the power generation is too high, the load of the ignition coil is too heavy, it is easy to burn out, but if the power generation is too high, then the body electrical appliances, such as light bulbs, will often be damaged; Of course, the quality of the accessories is not ruled out, so it is best to measure the power generation first.

If the spark plug gap is too large, adjust the gap or replace the spark plug.

The quality of gasoline is not good, try to change to high-grade gasoline.

If the compression ratio of the cylinder is wrong, adjust the compression ratio.

If there is a program failure in the computer version, you can go to the repair shop and use the computer to test the car and clear the wrong information. If it doesn't work, it may be that there is a problem with your car's transmission.

The power supply voltage is unstable.

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

There is a short circuit in the secondary.

The ignition coil is overheated due to the high primary current of the ignition controller.

It does not work well when subjected to high temperature and high pressure waves.

There is a small chance that it is a problem with the coil itself, so you can try a different brand.

The ignitor manifold does not work well.

What causes the ignition coil to be damaged: Generally speaking, it may be:

1. Design and manufacturing problems of batch spare parts; Cause damage to the ignition coil;

2. The coil insulation in the ignition coil is destroyed due to the thermal effect of the current;

3. The engine is overheated, and the coil insulating paint glue is baked and fails;

4. The spark plug electrode gap is too large, which increases the load of the ignition coil, makes the high-voltage coil break down, and causes a short circuit or open circuit.

5. The high-voltage line is broken, so that the generated high-voltage electricity has no way to pass, and it is easy to cause the high-voltage coil to be broken down.

Hello dear! The ignition coil generally has a service life of 100,000 km. When the engine is running, there are often tens of thousands of volts of high-voltage pulse current on the ignition coil, because it works in a high-temperature, dusty, and vibrating environment for a long time, it will inevitably produce aging and even damage, and if it is not replaced in time, it will have an impact on the working performance of the engine.

In addition, the damage of the ignition coil is mostly caused by improper use. If the ignition switch is not turned off after stopping, the thermal transformer resistor will be burned, and the regulator limit voltage will be too high, which will heat up the coil and destroy the insulator, resulting in a broken or short circuit of the coil. The spark plug has been "hanging the fire" for a long time, causing the carbon gold of the distributor cover to fall off.

**The high-voltage wire is not plugged in tightly, and the insulation of the jack is damaged after long-term flashover and external injury. The line is not fastened firmly, resulting in the lapping of iron, and the ignition coil is damp for a long time, resulting in a decrease in insulation, and cannot produce high-voltage electricity. The gas mixture in the cylinder is ignited by a high-pressure electric spark generated by the ignition, so the following situations may occur during operation.

1 The ignition ability deteriorates. With the increase of kilometer mileage, due to carbon deposit, pollution and insulator damage in the spark plug work, the secondary circuit leakage, which affects the secondary voltage can not rise to a large value, so that the ignition energy decreases or breaks the fire.

2. The working condition of the power breaker deteriorates. It will affect the secondary voltage value, such as oxidation, ablation, contamination of the contact of the breaker, poor contact bonding surface, contact gap misalignment, weak movable contact spring, capacitor damage and poor contact of the primary circuit, etc., all of which will reduce the primary current of the ignition coil and decrease the magnetic field change speed of the ignition coil, and the strength of the high-voltage spark will be weakened, and the ignition can not meet the working requirements of ignition.

3 The technical condition of the ignition system has deteriorated. This is mainly due to the natural wear and tear of parts, electro-erosion, chemical corrosion, and fatigue aging of materials. I hope my answer will help you and have a great day!!

The cause of the ignition coil damage is likely to be excessive current, or it is caused by the aging of the line for a long time.

Buy a car, use a car, maintain a car, repair a car, and listen to Chen Gong talk about cars.

A car with a broken coil will shake, idle unsteadily, start weakly, and even fail to ignite in serious cases. There are several situations when the ignition coil is broken:1

The cylinder does not work, and the ignition coil does not produce sparks, which will cause the engine to shake seriously when working, and the accelerator pedal is weak. 2.The ignition coil leaked, and the engine shook very badly when the throttle was filled.

For these problems, it may not affect the normal use of the vehicle, but it is recommended to repair these problems in time.

There are mainly these signs before the ignition coil breaks: slight car shaking, unstable idling, weak start, etc., and serious ones may not ignite.

What are the symptoms of a broken ignition coil? Put a glass of water on the engine at a glance.

As a key component in the ignition device, the ignition coil of the automobile engine bears the effect of intermittently converting the low-voltage electricity of the vehicle into high-voltage electricity. If there is no ignition coil to convert high-voltage electricity, then the combustible mixture in the cylinder will be difficult to be reasonably penetrated and ignited, and in this way, the car engine will not work normally.

It is not difficult to see that the ignition coil has an irreplaceable effect in the diesel engine, so with the long-term application, how long is the service life of the ignition coil? What are the symptoms of leakage in the ignition coil?

How long does the ignition coil last?

In fact, the service life of the ignition coil is longer than everyone thinks, and under normal circumstances, as long as it is used properly, the ignition coil is basically used for 100,000 kilometers. The ignition coil is replaced once every 10-140,000 kilometers, which can be regarded as a more conventional alternating cycle time.

Ignition coil leakage.

Ignition coil leakage refers to the condition that the high-voltage electricity caused by the damage of the cable sheath cannot be reasonably transmitted to the spark plug of the car.

The actual symptoms are as follows.

Vehicle idle shaking: Because the conventional ignition of combustible gas mixtures is endangered, the automobile engine will produce a number of intermittent chatter during the working process.

Increased fuel consumption and reduced driving force: In addition to the idle jitter of the vehicle, the ignition coil leakage will also lead to an increase in fuel consumption and a decrease in driving force.

There are many causes of carbon deposits: when the ability of the spark plug to work is weakened, it will also lead to the combustion of ethanol of the combustible gas mixture, and the combustible gas mixture of ethanol combustion will form a coking chemical called carbon deposit, and the exhaust gas will also emit black smoke from the exhaust pipe.

The life of the ignition coil is generally about 100,000 kilometers.

The main function of the ignition coil is to provide high voltage electricity to ignite the spark plug. The setting classification of the ignition coil: the ignition coil is placed somewhere in the engine room, and the high-voltage electricity is distributed through the distributor, and then transmitted to the spark plug through the cylinder wire; The ignition coil is placed on the upper part of the fire plug and is directly connected to the spark plug, which requires an ignition coil for each cylinder, but it will be more efficient.

When the engine is running, there are often tens of thousands of volts of high-voltage pulse current on the ignition coil, due to its long-term high-temperature, dusty, vibration environment Gongfan Yuhongzuo, it will inevitably produce aging and even damage, if not replaced in time will have an impact on the working performance of the engine.

Replacement cycle of the ignition coil

Generally, the ignition coil needs to be replaced once every 100,000 kilometers. When the engine is running, there are often tens of thousands of volts of high-voltage pulse current on the ignition coil, which will inevitably cause aging and even damage due to its long-term work in a high-temperature, dusty, and vibration environment.

If it is not replaced in time, it will have an impact on the operating performance of the engine. However, the 100,000 km we are talking about is not a fixed replacement cycle, and usually there is no need to replace the ignition coil as long as it works properly and the surface is not significantly aged.

The life of the ignition coil is about 100,000 km. Generally, there is no fixed service life, and it does not need to be replaced if it is not broken.

The main function of the ignition coil is to provide high-voltage electricity to ignite the spark plug.

If the ignition coil is used improperly, it will cause damage to the ignition coil

Protect the ignition coil from heat or moisture; Do not turn on the ignition switch when the engine is not running; Frequently inspect, clean and tighten the line joints to avoid short circuits or tie-ins; Control engine performance to prevent overvoltage; The spark plug shall not be "hoisted" for a long time; The moisture on the ignition coil can only be dried with a cloth and must never be baked with fire, otherwise the ignition coil will be damaged.