The function of the automobile ignition system is to supply the spark plug with high voltage electricity of sufficient energy at the appropriate time according to the working state of the engine and the working order of the engine to generate between the electrodes Sparks to ensure that the mixture can be ignited to make the engine work.

Ignition system is mainly composed of sensors, ECU, ignition coil and spark plug.

Sensor: Detects the engine working status information related to ignition, and inputs this information to the ECU as the basis for controlling ignition.

ECU: ECU is the control core of the ignition system, collects the information of each sensor, and transforms the analysis result into a control signal that controls the ignition coil on and off time.

Ignition coil: It is essentially a transformer that converts the 12V and 24V low-voltage electricity supplied by the automobile power supply to 15-40KV high-voltage electricity sufficient to produce breakdown sparks between the electrodes -150mJ of ignition energy, ignite the gas mixture in the cylinder to make the engine work.