What is the function of electronic ignition system?

Firstly, this function is to boost the low-voltage DC to a sufficiently high voltage according to the working sequence (ignition sequence) of the engine. Through the spark plugs of each cylinder, the compressed combustible mixture with high temperature and high pressure is ignited to complete the working process. 2. The ignition system consists of battery, ignition switch, ignition coil, ignition control module, high-voltage line and spark plug. Three. The classification of ignition system is divided into 1 according to the control mode of primary circuit. The traditional ignition system is mainly composed of power supply (battery and generator), ignition switch, ignition coil, capacitor, circuit breaker, distributor, spark plug, damping resistor and high voltage conductor. Turn grounding on and off. When the contacts of the circuit breaker are closed, the current of the battery starts from the positive pole of the battery and flows back to the negative pole of the battery through the ignition switch, the primary winding of the ignition coil, the movable contact arm of the circuit breaker, the contacts and the distributor housing. When the contact of the circuit breaker is pushed away by the cam, the primary circuit is cut off, the current in the primary winding of the ignition coil rapidly drops to zero, and the magnetic field around the coil and the iron core also rapidly decays or even disappears, so an induced voltage is generated in the secondary winding of the ignition coil, which is called secondary voltage. The current flowing through it is called secondary current, and the circuit through which the secondary current flows is called secondary circuit. After the contact is broken, the higher the primary current drop rate, the greater the flux change rate in the iron core, and the higher the induced voltage in the secondary winding, the easier it is to break through the spark plug gap. When the magnetic flux in the ignition coil core changes, not only high voltage (mutual inductance voltage) is generated in the secondary winding, but also self-inductance voltage and current are generated in the primary winding. At the moment when the contacts are separated and the primary current drops, the direction of self-induced current is the same as that of the original primary current, and its voltage is as high as 300V V. It will break through the gap between the contacts and produce a strong electric spark, which will not only make the contacts rapidly oxidized and ablated, but also affect the normal operation of the circuit breaker, and at the same time reduce the change rate of the primary current, the induced voltage in the secondary winding and the spark in the spark plug gap, making it difficult to ignite the mixed gas. In order to eliminate the adverse effects of self-induced voltage and current, the capacitor C 1 is connected in parallel between the contacts of the circuit breaker. At the moment of contact separation, self-induced current charges the capacitor, which can reduce the spark between contacts, accelerate the attenuation of primary current and magnetic flux, and improve the secondary voltage. 2. Electronic ignition system 3. Microcomputer controlled ignition system