With the development of automobile gasoline engines towards high speed, high compression ratio, high power, low fuel consumption, and low emission, the traditional ignition device can no longer meet the requirements of use. The core components of the ignition device are the ignition coil and switchgear. If the energy of the ignition coil is increased, the spark plug can cause enough energy to generate sparks, which is the basic condition for the ignition device to adapt to the operation of modern engines. Then, the car ignition coil manufacturer will tell you the difference between the ignition coil and the spark plug, the function of the ignition coil, the aging performance of the ignition coil, the maintenance suggestion of the ignition coil, and how often it is appropriate to replace the ignition coil.
Difference between ignition coil and spark plug
Is the ignition coil a spark plug? The ignition coil is an ignition coil and the spark plug are two different things and are two different components. No matter what kind of engine, the mixture must be ignited by sparks of appropriate strength and timing. On the engine, the device that generates this spark is the ignition system. Since the ignition system is inseparable from the current when it works, it is usually explained by combining the ignition system and the electrical system.
The difference between the spark plug and the ignition coil lies in the different functions: the spark plug is an important component of the gasoline engine ignition system, which can introduce high-voltage electricity into the combustion chamber, and make it jump over the electrode gap to generate sparks, igniting the combustible mixture in the cylinder; the ignition coil is The low-voltage direct current is converted into high-voltage electricity, and the voltage can reach tens of thousands of volts. The spark plug in the cylinder breaks down the air and ionizes it to generate electric sparks.
When igniting, the ignition coil will generate a high voltage of about 20000V. The high-voltage wire sends high-voltage electricity to the spark plug. In order to avoid excessive voltage loss, high-voltage lines are required to have good insulation and high transmission efficiency.
The role of the ignition coil
The function of the ignition coil is to convert the 12V low-voltage electricity of the power supply into 15-20kV high-voltage electricity, and the high-voltage electricity turns into a high-voltage electric spark through the spark plug to ignite the combustible mixture. Camshaft and crankshaft position sensors determine the timing of the ignition.
Ignition coil aging performance
1. Open the engine cover, observe the running engine, and find that the engine has obvious vibration. This kind of jitter obviously does not belong to the jitter under normal engine working conditions, and the jitter amplitude is very large. If the ignition coils on the vehicle need to be replaced due to aging, even if only one fails, then it is best to replace them altogether because the others are in similar condition; if only 1 or 2 ignition coils fail, but the others It is not affected, and the conditions of use are not bad (the service life is generally more than 100,000 kilometers), then you can directly replace the broken ignition coil, without involving other partners, and relieve a little pressure on your wallet.
2. During driving, when the speed is below 2500 rpm, the body shakes obviously and the acceleration is weak; when the speed exceeds 2500 rpm, the sense of shaking disappears;
3. In the idling state, the body shakes obviously. Observe the exhaust pipe opening, the exhaust gas flow from the car has obvious intervals, and at the same time the exhaust pipe shakes violently, and the sound of "chug" can be clearly heard;
Ignition coil maintenance recommendations:
1. Prevent the ignition coil from being heated or damp;
2. The moisture on the ignition coil can only be wiped dry with a cloth, otherwise it will damage the ignition coil.
3. Frequently check, clean, and fasten the line connectors to avoid short circuits or grounding;
4. Do not turn on the ignition switch when the engine is not running;
5. Control the engine performance and prevent the voltage from being too high;
How often should the ignition coil be replaced?
Among the many parts of a car, many play a key role but are easily damaged due to the influence of the working environment, such as spark plugs and ignition coils. These important parts, if there are abnormal conditions during use, must be carefully checked and cannot be underestimated. Many people say that the ignition coil doesn't care about its lifespan, and it is not expensive to replace it if it is broken. So, generally speaking, how often should the ignition coil be replaced? In fact, the ignition coil does not have a fixed replacement cycle.
The simple explanation of the ignition coil is to enable the spark plug to "generate sparks" and ignite the part of the mixed gas in the cylinder. In fact, it is a transformer responsible for converting the low-voltage current of the vehicle into high-voltage electricity. Under normal circumstances, each cylinder is equipped with a set of ignition coils and spark plugs. The ignition coils are generally replaced every 100,000 kilometers or even longer.
This article tells you how often it is appropriate to change the ignition coil. Difference between an ignition coil and a spark plug? The function of the ignition coil, the aging performance of the ignition coil, the maintenance suggestions of the ignition coil, etc.,