Spark Plug's Work Diary

On the top of the cylinder of the engine, there are three little partners: the fuel injector, the intake valve, and the spark plug.
The intake valve is responsible for letting the air in, the fuel injector is responsible for spraying the gasoline out, and the spark plug is responsible for the "ignition" in the middle.
Spark plug ignition goes through 4 stages

1. The ignition coil generates high voltage at both ends of the spark plug electrode, and the high voltage breaks down the medium between the electrodes to generate an electric spark.
2. The arc heats the mixture at high temperature to produce a flame core.
3. The flame core becomes larger, and the spark plug electrode structure will affect this process, thus affecting the spark plug ignition performance.
4. The mixture is ignited when the flame core temperature rises to the ignition point of the mixture.
The spark plug job turns out to be a high-risk and busy occupation! For every 2 revolutions of a four-stroke engine, the spark plug ignites once, which is: when the engine speed is 800r/min → the spark plug ignites 6.67 times per second; when the engine speed is 2000r/min → the spark plug ignites 16.67 times per second; the engine speed is At 5000r/min → the spark plug ignites 41.67 times per second.