How is the high voltage generated in the automobile ignition system?

The high voltage of automobile is produced by coupling and amplifying a pair of coils (ignition coils). The ignition coil consists of a primary winding and a secondary winding. The ignition coil can amplify the low voltage of 12V to the high voltage of 20000V~30000V.

Working principle of electronic ignition system;

First, the generation of electric sparks.

Second, the influence of engine working conditions on ignition.

Third, the requirements of the engine for the ignition system.

Fourth, digital electronic ignition system. Digital electronic ignition system is another great progress of gasoline engine ignition system after the use of contactless electronic ignition device, which is called microcomputer-controlled semiconductor ignition system.

Extended data:

Maintenance method of automobile ignition system;

1, check the appearance of ignition coil regularly, keep the appearance clean, and the inside should be moisture-proof to maintain its good insulation performance;

2. Check the connection between the high-voltage lead-out screw of the ignition coil and the high-voltage line to ensure that it is firm and reliable. If the connection is loose, it is easy to cause discharge flashover, which will lead to the burning of the connection parts and cause potential safety hazards;

3. Prevent the high-voltage wire and spark plug cap from loosening. One end of the secondary winding of the ignition coil is connected with the spark plug through the high voltage line and the spark plug cap. When the high voltage line or spark plug cap falls off, the high voltage generated by the secondary winding will rise to the limit value determined by the working capacity, which will easily lead to the breakdown and damage of the secondary winding.