UEFA TV

List of contents of this article:

• 1, What is the ignition advance angle of the engine generally between?
• 2, What is the ignition advance corner? What is the impact of ignitioning too late or too early?
• 3、ignition How to adjust the advance angle

What is the ignition advance angle of the engine generally between?

degree. The normal value range of the ignition advance angle is 6 degrees to 12 degrees. It is reasonable to fix the ignition advance angle at 10 degrees at start-up, which can make the engine achieve better power, economy and emission.

The advance angle of engine ignition is generally 6° to 12°. When the engine is working, the ignition has a great impact on the working performance of the engine.

In theory, the minimum ignition advance angle is 0 degrees, but in order to prevent the ignition of the mixture during the working process (which will cause loss of power), it is often set to more than 5 degrees, which is also the angle required for starting the speed.

It is not too early or too late to ignite, which will affect the efficiency of the engine. In addition to the engine speed, the optimal ignition angle is also affected by many other factors: the higher the cylinder temperature and cylinder pressure, the faster the mixed gas burns, and the smaller the ignition advance angle. Factors affecting cylinder temperature and cylinder pressure include engine compression ratio, temperature, cylinder temperature, load, etc.

What is the ignition advance corner? What is the impact of ignitioning too late or too early?

Ignition too early will cause explosion, the piston will be blocked, the efficiency will be reduced, and the wear will increase, which should be prevented. If the ignition is too late, the efficiency of the gas is low, and the exhaust sound is loud. If the fire is too early or too late, it will affect the increase of the rotation speed.

Usually, the degree of ignition advance is expressed by the angle of rotation of the crankshaft, which is called the ignition advance angle. The ignition angle is too large. The ignition angle is too large, the combustible mixture ignites too early, and the expansion pressure generated by gas combustion hinders the piston from moving upwards, resulting in reduced engine power, increased fuel consumption, poor idle speed, and sometimes even crankshaft reversal and twist.

From the ignition time to the piston reaching the compression stop point, the angle at which the crankshaft rotates during this period is called the ignition advance angle.The ignition advance angle when the engine can achieve the best power, economy and optimal emission is called the best ignition advance angle.

That is, the ignition time is late. Consequences: the ignition is too late, the gas is difficult to work, the fuel consumption is high, the efficiency is low, and the exhaust sound is loud. Factors affecting the ignition advance angle: The biggest factors affecting the ignition advance are the rotation speed and the combustion speed of the mixed gas.

This advance quantity is called the ignition advance angle. Impact: Early ignition will cause explosion, the piston will be blocked up, the efficiency will be reduced, and the heat load, mechanical load, noise and vibration will increase. Ignition is too late: the gas is difficult to work, the fuel consumption is high, the efficiency is low, and the exhaust sound is loud. If the fire is too early or too late, it will affect the increase of the rotation speed.

How to adjust the ignition advance angleSection

There are two ways to adjust the ignition advance angle: detect and adjust the platinum contact, and detect and adjust the ignition advance angle. The first is to detect and adjust the platinum contacts. It is necessary to check whether there are burn marks on the platinum contact. If there are any traces, please gently wipe the traces with a sand strip or No. 0 sandpaper.

The ignition advance angle of the car can be adjusted by the vacuum gauge. In the case of adjustment, it needs to be adjusted according to the data of the highest vacuum value when the car engine is idling. You can adjust the oil from the high-pressure pipe according to the calibrated oil supply point. The ignition advance angle is the main parameter that affects the performance of the car engine when it is working.

The ignition advance angle of the car can be adjusted by a vacuum gauge. When adjusting, it needs to be adjusted according to the data of the highest vacuum value of the car engine in the idle state, and the high-pressure pipe can be aligned according to the oil supply point of the scale.

Adjustment method Centrifugal ignition advance adjustment device When the engine speed changes, it automatically changes the phase relationship between the breaker cam and the distributor shaft, and changes the ignition advance angle.