When making an ignition coil, where are the primary and secondary coils located?

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.

It's all together, with copper wires in it.

The primary winding of the ignition coil is to generate a magnetic field and store electrical energy; The role of the secondary winding is to generate high voltage.

The ignition coil is also a kind of transformer, to achieve the purpose of ignition, the output voltage should be tens of thousands of volts, and the primary voltage is only one or twenty volts, according to the electric power formula p=iu, in the case of the same primary power (ignoring the electromagnetic transmission loss), the voltage is inversely proportional to the current, and the primary voltage is low, so the current is large.

The crankshaft position sensor gives the computer a signal, and the ignition coil is ignited by the computer [If the car has a problem, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

The engine computer controls the corresponding ignition coil to carry out high-voltage ignition at the set time according to the ignition sequence [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, the ignition is controlled by the engine computer, [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello is controlled by a computer. The computer controls the primary coil to de-energize, and then the secondary coil generates high voltage. It's similar to the transformer principle, the two coils have different turns.

A crankshaft position sensor is required to determine the moment of ignition. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello engine computer control. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Computer board [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, need computer version control, I hope my answer can help you, I wish you a happy car!! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

The working process of the mechanical ignition system is driven by the crankshaft to rotate the distributor shaft, Liao Mingjiang, a teacher from Guangzhou North Automobile Repair School. The cam on the distributor shaft rotates, so that the secondary contacts of the ignition coil are connected and closed, and high voltage electricity is generated. This ignition high-voltage electricity is sent to the spark plugs of each cylinder in order according to the working requirements of the engine through the splitter head on the distributor shaft, and the spark plug emits an electric spark to ignite the gas in the combustion chamber.

The distributor housing can be manually rotated to adjust the basic ignition advance angle (i.e. the ignition advance angle at idling), as well as the vacuum advance device, which provides different advance angles depending on the change in the vacuum level in the intake pipe.

The electronic ignition system is completely different from the mechanical ignition system in that it has an electronic control device for ignition, and there are ignition control curves (maps) required by the engine in various operating conditions. Through a series of sensors such as engine speed sensor, air intake pipe vacuum sensor (engine load sensor), throttle position sensor, crankshaft position sensor, etc., to judge the working state of the engine, find out the ignition advance angle required by the engine in this working state on the map diagram, and carry out ignition according to this requirement. Then the above ignition requirements are corrected according to the knock sensor signal, so that the engine works at the best ignition time.

The electronic ignition system also has closed-loop control and open-loop control: the electronic control system with a detonation sensor that can correct the ignition advance angle in time according to whether the engine detonation occurs is called a closed-loop control system; Without a knock sensor, the ignition advance control is only controlled according to the program set in the electronic control unit, which is called an open-loop control system.

What is the reason why the car runs and grows? It may be a problem with the ignition coil, so hurry up and change it!

Experience. It mainly depends on how big the coil is, who your skeleton is and the number of slots, etc.

Level 2 primary turn ratio: 1:80 primary wire diameter is determined according to the primary current; The secondary wire diameter is determined based on the ignition energy.

This is more correct. The final determination is based on the results of calculations and experiments.

The resistance and number of turns of the ignition coil determine the wire diameter, and in the case of a certain resistance value, the more turns, the larger the wire diameter of the enamelled wire required, and vice versa.

Initial turns: 1:80

The primary wire diameter is determined according to the primary current; The secondary wire diameter is determined based on the ignition energy.

1. A distributor.

The distributor is a component in the ignition system that controls the on-off of the primary circuit in a timely manner and distributes the sparks to the spark plugs of each cylinder in order. The distributor is mainly used in the traditional ignition system and the ordinary electronic ignition system, and these two ignition systems have basically been eliminated. Modern automobile engines have basically canceled the distributor called no distributor microcomputer control ignition system.

2. Ignition coil.

The reason why the ignition coil can turn the low-voltage electricity on the car into a high-voltage voltage is because it has the same form as the ordinary transformer, and the ratio of turns between the primary coil and the secondary coil is large. However, the ignition coil works in a different way than the ordinary transformer, which works continuously, while the ignition coil works intermittently, and it 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.

3. Ignition coil binding post.

Power + Plug-in: to the ignition.

Additional resistor: The additional resistor in the ignition coil low-voltage circuit has the effect of balancing the high-voltage spark between the low-voltage coil end of the ignition coil and the ignition switch power supply post in series. A magnetic field is generated when an electric current passes through the primary coil, and it takes a period of time from the beginning of the current to the time when the magnetic field is saturated (i.e., at its maximum).

At low engine speed, the magnetic field can reach saturation, and at high engine speed, due to the shortening of time, the magnetic field cannot reach saturation, the secondary voltage generated will be insufficient, and the spark will be weakened. If the ignition coil is designed to increase the primary current value so that a strong spark can be generated at high speed, the primary current will be too large at low speed, and the coil is easy to heat up. After using the additional resistor, the primary current passage time is shorter at high speed of the engine, so the resistor temperature is low, the resistance is small (the resistance of the resistance wire changes with the frustration, and the resistance is high when the temperature is high), and the current intensity of the passing current is large, which can enhance the high-voltage spark.

The current passes through for a long time at low engine speed, and the resistance is high when the resistor temperature is high, so that the current intensity is reduced to avoid overheating the coil. However, there is a limit to this balancing effect of resistors.

Negative pole connecting post: connecting the distributor breaker contact.

The ignition coil is actually a transformer made using the principle of electromagnetic induction, which converts the 6 volt low-voltage current output from the battery or magneto into a high-voltage current of 11,000 to 15,000 volts. The ignition coil is mainly composed of a low-voltage coil also known as a primary coil, a high-voltage coil also known as a secondary coil, and an iron core. The low-voltage coil is wound with thick copper enameled wire, the number of turns is small, one end of the coil is connected to the power supply, and the other end is connected to the circuit switch circuit breaker.

The high-voltage coil is wound with a relatively thin copper enameled wire, and one end of the coil is connected to the spark, and the other end is connected to the body with iron.

The principle of the ignition coil is that after the circuit breaker contact is closed, the low-voltage circuit is connected, and the current passes through the magnetized core of the low-voltage coil, and a magnetic field is generated around the low-voltage coil. When the circuit breaker contacts are normalized by the cam, the low-voltage circuit is cut and the current from the low-voltage coil disappears. At this time, the iron core will reduce the magnetic force, and the magnetic field lines will immediately shrink, cutting the high-voltage coil, so that the high-voltage coil will produce an extremely high voltage induced current.

This high-voltage current is delivered from the high-voltage line to the spark, causing a jump that ignites the flammable mixture of the combustion chamber. On the other hand, if the high-voltage coil is cut magnetically, the low-voltage coil will also be cut, and the low-voltage coil will also produce a magnetic inductance voltage of 200 300V. The direction of this magnetic inductance voltage is the same as that of the original current.

It will hinder the rapid disappearance of the original current, slow down the contraction of the magnetic field, reduce the induced voltage of the high-voltage coil, make the spark unable to ignite, and form a strong spark between the short electrical contacts, so that the contacts burn rapidly. Therefore, in order to eliminate the harmful effect of self-sensing voltage, capacitors are connected in parallel on the low-voltage coil connection. The capacitor plays the role of capacitance and discharge, so when the circuit breaker point is normalized, the capacitor is charged with the self-sensing voltage of the low-voltage coil.

This part of the power is stored by the capacitor and does not form a strong spark on the circuit breaker contacts, protecting the circuit breaker contacts. After the current of the low-voltage coil disappears, the charged capacitor needs to be discharged in the opposite direction through the low-voltage coil and <>

As a result, the original magnetic field also shrinks rapidly, increasing the induced voltage of the high-voltage coil. The low-voltage coil and the high-voltage coil are wrapped around the iron core, and in order to improve the magnetism, a tile-shaped disc is set around the two coils and then placed in the iron case. The iron case has a plastic insulated cover covered with connecting posts that guide the low- and high-voltage coils.

The segment of the high-voltage coil is trapped inside the center, and the terminal is surrounded by a protruding insulating plastic that prevents spark discharge between the high-voltage coil and the low-voltage coil terminals.

The ignition coil is actually a transformer, which uses high-voltage electricity to ignite the flammable compressed gas in the gas cylinder when the car is ignited.

It is a transformer made using the principle of electromagnetic induction, which uses electricity to light the fire, and its structure uses a storage battery and a coil.

The anti-rotation level switch uses a micro motor as the driving device, and the transmission shaft is connected to the clutch. When the material is not in contact, the motor is functioning normally. When the blade touches the material, the motor stops rotating, and the detection device outputs the contact signal, cutting off the power supply to stop rotating.

When the material is lowered, the resistance of the blades disappears and the detection device is restored to its original state by means of a torsion spring.

The ignition coil of the electronically controlled ignition system generally adopts the working principle of the engine, that is, the low voltage (about 12 volts) is boosted through the transformer (ignition coil) to generate a high voltage (about 40-50kV) electric spark to ignite the mixture. At present, there are the following types of common ignition coils on the market:

1.Isolated ignition coil: capable of isolating circuits between high and low voltages and generating a high voltage current that ignites the mixture. This is a kind of ignition coil that has been phased out.

2.Electronic ignition coil: Ignition is achieved through electronic components, which can generate higher voltages without the need for buried blue-touch ignition. This kind of ignition coil has a long service life and good ignition effect, so it is increasingly used in automobiles. Be cautious.

3.Refractory ceramic ignition coil: This kind of ignition coil is sheathed with refractory ceramics, which has good high temperature resistance. Since the coefficient of thermal expansion is the same as that of the core, the stress inside the coil is reduced and the life of the coil is extended.

4.One-time ignition multi-cylinder ignition coil: This ignition coil can ignite the mixture of multiple cylinders at the same time, and has the characteristics of high ignition efficiency and easy maintenance.

In general, with the continuous development of electronic technology, electronic ignition coils have become more and more mainstream and have become the standard configuration of ignition systems in modern automobiles.