Working principle of ignition coil
When the ignition system switch device turns on the primary coil (low voltage), as the current passes through the low voltage coil, the The iron core is magnetized, thereby generating a strong magnetic field around it, and the iron core stores magnetic field energy; when the switching device disconnects the primary coil circuit, as the primary coil magnetic field disappears instantly, the iron core demagnetizes, and the magnetic lines of force shrink rapidly Cutting the secondary coil (high voltage) so that a very high voltage is induced in the secondary coil. The high-voltage electricity will eventually be delivered to the spark plug to spark and break down to ignite the combustible mixed gas. As a result, the huge gas thrust generated as the combustible mixed gas is ignited will push the piston to do work.
The function of the ignition coil
The function of the ignition coil is to convert low-voltage direct current into high-voltage electricity. The voltage can reach tens of thousands of volts and ionize the air through the breakdown of the spark plug in the cylinder. Generate electric sparks. The core components of the ignition device are the ignition coil and the switch device. By increasing the energy of the ignition coil, the spark plug can generate sparks with sufficient energy. This is the basic condition for the ignition device to adapt to the operation of modern engines.
How often should the ignition coil be replaced?
Generally, the ignition coil needs to be replaced every 100,000 kilometers. If the engine is found to be damaged during driving, If the motor vehicle engine often vibrates, fails to refuel, and loses power, then you should also check whether there is any problem with the vehicle’s ignition coil. These parts cannot be ignored at ordinary times. If you want the life of the car ignition coil to be longer, you must pay attention to daily maintenance. The ignition coil is used with the spark plug. If the aging spark plug is used, it will also affect the service life of the ignition coil. In addition, when using fuel, you also need to pay attention to using better quality fuel, because insufficient combustion of inferior fuel will cause excessive carbon accumulation, which will damage the operation of the ignition coil.
How much do ignition coils generally cost?
The prices of ignition coils on the market are relatively transparent and not expensive. Depending on the product model and brand, the price can range from high to low. Generally, an ignition coil costs between 80 and 300 yuan. If you don’t know how to install it yourself and need a car maintenance worker to install it, even if you replace four ignition coils, the maximum price, including labor costs, will be about a thousand yuan.
Signs of a broken ignition coil
1. A broken ignition coil will lead to problems such as no high-voltage spark, insufficient high-voltage spark intensity, and the inability to start the engine.
2. The ignition coil is leaking. It may or may not vibrate when idling, but it definitely vibrates and becomes weak when accelerating.
Engine jitter: The engine will vibrate intermittently during operation, and symptoms such as weakness in acceleration will also follow.
3. As the spark plug’s spark plug ability weakens, the combustion of the engine’s combustible mixture will be affected, resulting in adverse reactions such as increased fuel consumption and reduced power.
4. Due to the weakening of the spark plug’s spark plug ability, incomplete combustion of the combustible mixed gas will occur. The incomplete combustion of the combustible mixed gas will produce a charred substance called carbon deposits. At the same time, the automobile exhaust There will also be black smoke coming out of the trachea.
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