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What is the working principle of automobile electronic ignition system?
Electronic ignition system is completely different from mechanical ignition system. It has an electronic control device for ignition, which contains the ignition control MAP required by the engine under various working conditions.

Through a series of sensors, such as engine speed sensor, intake pipe vacuum sensor (engine load sensor), throttle position sensor, crankshaft position sensor, etc. Judge the working state of the engine, find the required ignition advance angle of the engine in this working state on the map, and ignite according to this requirement.

Then, according to the knock sensor signal, the above ignition requirements are corrected to make the engine work at the best ignition time.

Extended data:

Working requirements of electronic ignition system

1, which can generate enough voltage to break through the spark plug gap. The voltage required when the spark plug electrode breaks down to produce sparks is called breakdown voltage. The secondary voltage generated by the ignition system must be higher than the breakdown voltage to make the spark plug flash.

2. Sparks should have enough energy.

3, the ignition time should be adapted to the working condition of the engine. First of all, the ignition system should be ignited according to the working order of the engine. Secondly, ignition must be carried out at the most favorable moment.

Classification of electronic ignition systems

1, contactless electronic ignition system

2. Magnetic induction electronic ignition system

3. Hall electronic ignition system

4. Computer electronic ignition system with distributor

5. Distributorless electronic ignition system

Baidu encyclopedia-electronic ignition system