What failures can be caused by damage to the ignition coil and spark plug of the vehicle?

Automobile spark plug maintenance masters like to use the "fire nozzle" to honorifically name, its role is mainly through the generation of electric sparks, so as to ignite the gas mixture in the cylinder, to promote the engine work. There is no specific regulation on the life of a spark plug because of the different materials and the degree of external influences. Under normal circumstances, when driving 30,000 kilometers, the spark plug needs to be replaced, which can ensure better combustion, and the common faults of the spark plug are summarized into two types.

One is that the spark plug is severely ablated, and the other is that the spark plug has deposits. So, let's take a look at the common failures of spark plugs and what we can do about them. With the development of automobile engines in the direction of high speed, high compression ratio, high power, low fuel consumption and low emissions, the traditional ignition device has not adapted to the requirements of this era.

We know that the core components of the ignition device are the ignition coil and the switchgear, which improves the energy of the ignition coil so that the spark plug can produce a spark with enough energy. So the question is, what happens when the ignition coil breaks? Let's give you a science popularization.

1. In the process of driving, when the speed is below 2500 rpm, the body has obvious shaking, accompanied by the situation of weak acceleration; When the rpm exceeds 2500 rpm, the jitter disappears.

2. In the idle state, the shaking of the body is obvious; There is a noticeable intermittent exhaust gas flow from the exhaust pipe, and the exhaust pipe shakes badly.

3. The engine has obvious shaking, which is obviously not the shaking under normal engine working conditions, and its jitter amplitude is large.

In all of the above situations, if only one ignition coil fails, and the other three cylinders are working normally, it is okay to barely drive in an emergency, but this will seriously damage the engine, frame and other components. Therefore, it is recommended that the majority of car owners face the situation that the ignition coil of the car with more than 1 cylinder is burned, and it is recommended to stop driving immediately.

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.

1. The possible causes of ignition coil damage are:

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.

Second, the ignition coil is broken: the corresponding cylinder will not work, resulting in idle shaking, no force, no oil, fault light on.

There are many fault phenomena of this fault, including engine vomiting, poor starting, engine shaking, power decrease, fuel consumption rising and so on.

Ignition coil fault phenomenon.

Under normal circumstances, there are as many ignition coils as there are cylinders in the engine, and if the ignition coil is seriously damaged at a certain point, resulting in the spark plug spark not enough to break down and ignite the combustible mixture or not jump at all, then the engine will have a lack of cylinders.

The specific phenomenon is as follows: engine shaking: due to the lack of cylinders in the engine, the balance of work is broken, so in the process of work, the engine will shake violently.

If the engine lacks too many cylinders or two adjacent power cylinders are missing cylinders at the same time, then the engine will most likely not start normally.

If the spark plug is symptomatic, it means that the engine or spark plug is not working properly and is malfunctioning

First, the spark plug electrode is melted, and the insulator is white, indicating that the temperature in the cylinder is too high and the spark plug is ablated. This is due to excessive carbon deposits in the cylinder, too small valve clearance, too thin and damaged spark plug seals, and the spark plugs are not tightened according to the specified torque, resulting in poor engine heat dissipation.

Second, the spark plug electrode is rounded and the insulator is scarred, indicating that the engine is prematurely ignited. This is due to the early ignition time, the low octane number of gasoline and the low calorific value of the spark plug.

Third, the top of the spark plug insulator is shattered, and gray-black stripes appear, indicating that the engine has a deflagration and an instantaneous high-voltage shock wave cracks the insulator; This is caused by the early ignition time, serious carbon deposits in the combustion chamber and high temperatures. Fourth, there is wet black (oil stain) between the top of the spark plug insulator and the electrode, indicating that the lubricating oil has entered the cylinder for combustion.

First of all, the lack of cylinder has little to do with the speed sensor, and there are generally three reasons for the lack of cylinder, 1. No fire (or weak, wrong timing) 2. No oil (or too thick, too much) 3. Mechanical failure (cylinder pressure is too low).

According to what you said, 1. The ignition hardware should be fine, and the control line between the computer and the high-voltage package should be checked for abnormality. 2. Check whether the injector and control of this cylinder are normal. 3. Check whether the cylinder pressure is normal.

After such an investigation, it should be possible to determine what went wrong.

1. First replace the spark plugs of each cylinder, and then start the vehicle to determine the working condition of the engine, which is relatively simple, and the spark plugs have no maintenance value.

2. If the spark plug is replaced and the fault does not change, then replace the ignition coil, start the vehicle to observe the fault phenomenon, and the ignition coil has no maintenance value.

3. Through the above two steps, the fault can definitely be solved, and the spark plug can also be replaced at the same time as the ignition coil, because the spark plug must be replaced after 40,000 kilometers of use.

The faults that will occur in the car when the spark plug is broken are: difficulty in starting, too much carbon accumulation on the spark plug, or too much precipitation material has been accumulated, the spark plug gap is increased, and the ignition energy is insufficient, resulting in difficulty in starting the car; The power is low, the carbon layer of the spark plug is too thick, the shunt resistance is reduced, and the sparks generated by the electrodes are affected, resulting in unstable engine operation and decreased power. If the spark plug is broken, it will also lead to the exhaust gas exceeding the standard, and the spark plug failure will cause the front ignition system to not work normally, and the mixture combustion will not be sufficient, and some harmful substances will be discharged without sufficient combustion.

There is a problem with the spark plug, the ignition system is abnormal, and the mixture is not fully combusted, resulting in fuel waste.

After the spark plug fails, the engine will produce a large amount of carbon deposits, because the air-fuel ratio is incorrect after the spark plug is broken, the mixture is too thick or the air filter is too dirty, which will make the carbon deposition phenomenon of the starting air mold machine, and the carbon deposit of the fire stop is serious, which will directly affect the resistance and the phenomenon of insufficient engine power.

1. Serious carbon deposit: After the spark plug fails, the engine will produce a large amount of carbon deposit, because the air-fuel ratio is incorrect after the spark plug is broken, the mixture is too thick or the air filter is too dirty, which will make the engine appear carbon deposit, and the spark plug has serious carbon deposit, which will directly affect the resistance and the phenomenon of insufficient power.

2. Difficulty in starting the vehicle: After a long time of use, the spark plug will appear on the spark plug with precipitated substance, so that the spark plug can not be well matched with other parts in the process of use, which directly affects the ignition energy, so there will be a phenomenon of difficulty in starting the car, if the vehicle has difficulty in starting, you can check whether the spark plug of the car is faulty.

3. Increase in fuel consumption: after the spark plug has a problem, the ignition system is affected, the engine can not be fully burned, and the fuel consumption is too high.

4. Exhaust gas exceeds the standard: the spark plug fails, resulting in some parts being affected in the working process, resulting in insufficient combustion of the mixture, and the phenomenon that the harmful substances can not be discharged in time if the mixture is not fully combusted, and the problem of excessive exhaust gas will occur after a long time.

Photo by Pacific Automobile Network Q&A).

After the spark plug fails, the engine will produce a large amount of carbon deposits, because the air-fuel ratio is incorrect after the spark plug is broken, the mixture is too thick or the air filter is too dirty, which will cause the engine to have carbon deposits, and the spark plug has serious carbon deposits, which will directly affect the resistance and the phenomenon of insufficient engine power.

1. Serious carbon deposition: After the spark plug fails, the engine will produce a large amount of carbon deposition, because the air-fuel ratio is incorrect after the spark plug is broken, the mixture is too thick or the air filter is too dirty, which will make the engine appear carbon deposition, and the spark plug has serious carbon deposition, which will directly affect the resistance and the phenomenon of insufficient power.

2. Difficulty in starting the vehicle: after a long time of use, the spark plug will appear on the spark plug with precipitated substance, so that the spark plug can not be well matched with its parts in the process of use, which directly affects the ignition energy, so there will be a phenomenon of difficulty in starting the car, if the vehicle is difficult to start, you can check whether the spark plug of the car is faulty.

3. Increased oil consumption: after the spark plug has a problem, the ignition system is affected, the engine can not be fully burned, and the fuel consumption is too high, for the owner, excessive fuel consumption is a waste, if the fuel consumption is found to increase during operation, it can be judged by the spark plug, if the spark plug has a problem, it needs to be replaced in time to avoid waste.

4. Exhaust gas exceeds the standard: the spark plug fails, resulting in some parts being affected in the working process, resulting in insufficient combustion of the mixture, and the phenomenon that the harmful substances can not be discharged in time if the mixture is not fully combusted, and the problem of excessive exhaust gas will occur after a long time.

Photo by Q&A) Xpeng P7 Model Y Aion V Ideal One NIO EC6 Model X @2019

Automobile spark plugs play an important role, but they will be damaged after a long time, so what are the fault phenomena caused by spark plug damage?

1. The car cannot be started. After the spark plug is damaged, it will affect the ignition of the car, so the car will not start, and the spark plug needs to be repaired or replaced in time.

2. The power of the car is insufficient. If the spark plug is not particularly badly damaged, although the car can start, there will be a lack of power, such as not being able to feel the power when the gas pedal is refueled.

3. Spark plug damage will also cause the engine to shake. In the case of engine shaking, it will also make the car in the process of driving Zheng Jian has obvious shouting and shaking, which affects the use of the car.

4. When the spark plug is damaged, it will also cause insufficient fuel combustion, which is easy to cause the gas content to meet the requirements.

5. Spark plug damage is also easy to make the car easy to stall, so no matter what the reason, the spark plug must be repaired or replaced in time.