How does the ignition coil short circuit the shell?

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.

The ignition coil internal wire and the shell iron leakage will make the engine work poorly or cannot work. On the way, when it is determined that the ignition coil is short-circuited after inspection, the ignition coil can be removed from the car, tied up with hemp rope or other insulated ropes and belts, and suspended; It is also possible to put insulation between the bracket and the housing to eliminate short circuits.

In this case, he has to add some devices, such as some conductors, so that there will be a surgical short circuit, otherwise it is impossible.

If the ignition coil, its insulation is damaged, then it will be short-circuited with the shell and cause a short-circuit with the shell, then it will not be able to work normally?

How do I short-circuit surgery now, this should be checked, or go to a professional store and ask him to check it for you.

If there is a short circuit, the whole thing will trip and it will not be usable.

Summary. Hello dear, I am happy to answer for you: what to do if the ignition coil is short-circuited by the iron wire, and the reply is as follows:

Ignition coil short circuit can not start the car (1) Phenomenon: A small car, the engine suddenly turns off during driving, and there is no sign of oncoming car when it starts again. When the distributor and carburetor were removed, no abnormalities were found.

2) Cause: The primary coil of the point-in-flame coil is broken. (3) Analysis:

The ignition coil is mainly composed of a primary coil, a secondary coil and an iron core. When the ignition gear is switched on, a low-voltage current flows through the primary coil, so a magnetic field is generated around the coil. The iron core in the coil acts as a reinforcement of the magnetic field.

The magnetic field lines pass through the turns of the primary and secondary coils and form a loop through the core. The rotation of the distributor cam makes the platinum contact open when it is closed, and the current flowing through the primary coil comes and goes, and the magnetic flux of the two coils changes, the primary coil will produce self-inductive electromotive force, and the secondary coil will also produce high-voltage current due to mutual inductance.

Hello dear, I am happy to answer for you: what to do if the ignition coil is short-circuited with the iron wire The reply is as follows: The ignition coil is short-circuited and cannot start the car (1) Phenomenon:

A small car, the engine suddenly turned off during the drive, and there was no sign of oncoming car when it started again. When the distributor and carburetor were removed, no abnormalities were found. (2) Reason:

The primary coil of the point coil is broken. (3) Analysis: The ignition coil is mainly composed of a primary coil, a secondary coil and an iron core.

When the ignition gear is turned on, a low-voltage current flows through the primary coil, so a magnetic field is generated around the coil. The iron core in the coil acts as a reinforcement of the magnetic field. The magnetic field lines pass through the turns of the primary and secondary coils and form a loop through the core.

The rotation of the distributor cam makes the platinum contact open when it is closed, and the current flowing through the primary coil comes and goes, and the magnetic flux of the two coils changes, and the primary coil will produce self-inductive electromotive force, and the secondary coil will also produce high-voltage current due to mutual inductance.

4) Judgment: The above phenomenon occurs in the car, and the high-voltage line has no high-voltage spark after inspection, which is a circuit fault, and can be further checked according to the following methods: 1. Check whether the wiring of low-voltage electrical appliances is loose.

If there is, it should be excluded first. 2. Remove the live wire joint on the low-voltage terminal post of the distributor, turn on the ignition gear of the ignition switch, and scrape the joint on the cylinder block. If there is no fire, remove the white wire (additional resistance wire) and blue wire (resistance short line) on the ignition coil "+" binding post, and turn off the common wiring on the cylinder block and scrape the fire.

If there is fire, it means that the primary coil of the ignition coil is short-circuited. If there is no fire, check whether the ignition switch is not energized. (5) Dry as reasoned:

In case of this fault on the way, you can first use a wrench to gently tap the positive and negative binding posts of the ignition coil inward, and the disconnection may be contacted again after being shaken, and this method can be used for first aid. If the problem is not solved after this treatment, the ignition coil should be replaced.

Changan Ounuo 4G15 starts the ignition coil and how to measure the voltage of the two wires.

Hello: There is an insulating layer on the outside of the ignition coil, if there is leakage, it is the ignition coil is damaged. You need to replace the ignition coil with a new one, and you are checking to see if there is any leakage elsewhere.

Slight: shaky, unstable idling, weak start.

Severe: Can't be fired.

Explanation of terms: ignition coil.

There are two sets of coils in the usual ignition coil, the primary coil and the secondary coil. The primary coil uses thicker enameled wire, usually about 200-500 turns of enameled wire about millimeters; The secondary coil uses a thinner enameled wire, usually about 15000-25000 turns with about millimeter enameled wire. One end of the primary coil is connected with the low-voltage power supply (+) on the vehicle, and the other end is connected with the switchgear (cut-off).

One end of the secondary coil is connected with the primary coil, and the other end is connected with the output end of the high-voltage line to output high-voltage electricity.

The reason why the ignition coil can turn the low-voltage electricity on the car into a high voltage is that it has the same form as the ordinary transformer, and the primary coil has a larger number of turns than the secondary coil. However, the ignition coil works in a different way than the ordinary transformer, the working frequency of the ordinary transformer is fixed 50Hz, also known as the power frequency transformer, and the ignition coil works in the form of pulses, which can be regarded as a pulse transformer, which repeatedly carries out energy storage and discharge at different frequencies according to the different speed of the engine.

When the primary coil is connected to the power supply, a strong magnetic field is generated around it as the current increases, and the iron core stores the magnetic field energy; When the switchgear disconnects the primary coil circuit, the magnetic field of the primary coil decays rapidly, and the secondary coil induces a very high voltage. The faster the magnetic field of the primary coil disappears, the greater the current at the moment of current disconnection, and the greater the turn ratio of the two coils, the higher the voltage induced by the secondary coil.

Coil type. Ignition coils are divided into two types: open and closed according to the magnetic circuit. The traditional ignition coil is of the open magnetic type, and its core is stacked with silicon steel sheets of about millimeters, and the core is wound with secondary and primary coils. The closed magnetic type uses a similar iron core to wind the primary coil, and then winds the secondary coil outside, and the magnetic field lines form a closed magnetic circuit from the iron core.

The advantages of closed magnetic ignition coil are less magnetic flux leakage, small energy loss and small volume, so the electronic ignition system generally adopts closed magnetic ignition coil.

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

With the development of automobile gasoline 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 use. The core components of the ignition device are the ignition coil and the switchgear, and the spark plug can produce a spark with sufficient energy to increase the energy of the ignition coil, which is the basic condition for the ignition device to adapt to the operation of modern engines.

Slight: shaky, unstable idling, weak start.

Severe: Can't be fired.

Hello dear <>

Here are some of the precursors that can occur if the ignition coil is broken:1Difficult to start the vehicle:

If your vehicle has trouble starting or requires multiple attempts to start, the ignition coil can be a problem. 2.The engine shakes violently:

If the ignition coil fails, it can cause the piston to work unevenly, which can cause the engine to shake and the fuel to not burn completely, resulting in poor exhaust. 3.Unsteady acceleration or sudden stall of the vehicle:

If the ignition coil is damaged, it may affect the combustion of the engine, cause the vehicle to accelerate unsteadily, or suddenly lose power while driving. 4.Reduced fuel economy:

If the ignition coil fails, the combustion efficiency of the engine will be reduced, which can lead to reduced fuel economy and increased fuel consumption. 5.Engine failure light on:

If the ignition coil fails, an error is issued**, which may cause the engine failure light to illuminate. If you often encounter the above situation, please check whether the ignition coil of your vehicle is damaged in time and replace and repair it as soon as possible.