Disadvantages of installing ignition advance angle, disadvantages of cng ignition advancer

Since it takes a certain amount of time from the ignition of the spark plug to the flame propagation until the combustible mixture in the cylinder is completely burned, and the engine rotates at a high speed during operation, if the ignition starts at the moment when the piston reaches the top dead center, When the combustible gas mixture begins to burn completely, the piston must have begun to move downward. This will cause the loss of gas thrust, and ultimately lead to a decrease in engine power, so current engines will have an ignition advance angle.

But there is another kind of external ignition advancer on the market. So, are there any disadvantages of installing an ignition advancer? What are the disadvantages of CNG ignition advancer?

About the ignition advance angle

Ignition advance is when the engine piston has not reached compression top dead center, the spark plugSpark in advance, and from the moment the spark plug jumps to the time when the piston reaches compression top dead center, the angle that the crankshaft rotates is called the ignition advance angle.

(The figure below is the dynamic diagram of the valve phase, in which 5-30° is the ignition advance angle)

About installing the ignition advancer

In fact, installing this kind of ignition advancer is nothing short of superfluous.

I believe that those who have a little exposure to engine theoretical knowledge should know that the current engine generally uses the form of separate ignition of each cylinder, and this form generally uses camshaft sensors or monitoring cylinder compression to achieve precise ignition. At the same time, because the optimal ignition advance angle required by the engine is different under various operating conditions, current engines can automatically adjust to the optimal ignition advance angle according to different operating conditions.

In other words, the ignition timing of the engine is now calculated by the careful calculation of each sensor. At the same time, the ignition advance that has the greatest impact on engine performance and emissions can also be automatically adapted according to the different operating conditions of the engine, so the engine does not need ignition advance at all. This kind of thing.

Disadvantages of CNG ignition advancer

Current engineThe ignition advance angle is all factory-prepared. If you blindly install this kind of ignition advancer, it will inevitably cause the engine's own ignition advance disorder, and the consequences will be lighter, the engine power will drop, running jitter, and if it is serious, it will even cause engine damage. Deflagration.