What is the basic structure and working principle of automobile electronically controlled ignition system?

First of all, automotive electronically controlled ignition system, that is, electronically controlled ignition system, it is the more commonly used ignition system in modern automobiles, its basic function is ignition advance control. The basic structure of the electronically controlled ignition system consists of a variety of sensors (crankshaft angle sensor, air flow meter, water temperature sensor, throttle switch, ignition switch, speed sensors, etc.), control unit, ignition, and delivery coils.

The power source of the electronically controlled ignition system is the automobile engine and battery, and its working principle is that the ignition coil can transform the low-voltage electricity of the power source into high-voltage electricity, which is then distributed to the spark plugs of each cylinder through the distributor, and the engine operating conditions and operating conditions are judged according to the signals sent by each relevant sensor (e.g., the engine speed sensor, intake pipe vacuum sensor, etc.).

Thus, the optimal ignition advance angle is selected to ignite the mixer, improve the engine combustion process, and achieve the purpose of improving engine power, economy, and reducing pollutant emissions. Or directly by the microcomputer control system for the distribution of high voltage, without a distributor, can also achieve the same purpose.

The main advantages of the electronically controlled ignition system are as follows: first, it can provide the best ignition voltage and ignition duration according to the engine speed; second, it can provide the nearest ignition advance angle under different load and speed conditions; third, it can control the ignition time, and through the detonation sensor to carry out the feedback control of the detonation to make sure that the ignition time is just in the critical state of gasoline engine without detonation.

And change the system effectively improve the automobile engine power, economy, but also effectively reduce the pollutant emissions; Finally, the electronic ignition system is compact, with high reliability, low cost, low power consumption, no cooling, good responsiveness and many other advantages.

The electronically controlled ignition system as an important part of the automobile engine, once the failure will cause the engine idling instability, power decline and many other problems, and with the people's higher and higher requirements for automobile performance, the structure of the electronically controlled ignition system is also becoming more and more complex, the performance of the electronically controlled ignition system is more stable, and at the same time of reducing the fuel consumption and pollutant emissions, its troubleshooting and maintenance difficulties are also This has put forward higher and higher skill requirements for automobile maintenance technicians.

The above is the full introduction of the editor, I hope to help you.