Automobile ignition circuit

What is the ignition circuit of a car? Automobile electronic ignition circuit;

1. The electronic ignition system is completely different from the mechanical ignition system. It has electronic ignition control device and ignition control curve (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. The working state of the engine can be judged, and the required ignition advance angle of the engine in this working state can be found on the map, and ignition can be carried out 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.

2. Electronic ignition system can also be divided into closed-loop control and open-loop control: an electronic control system with a knock sensor that can timely correct the ignition advance angle according to whether the engine knocks is called a closed-loop control system; If there is no knock sensor, the ignition advance control is only controlled according to the program set in the electronic control unit, which is called an open-loop control system.

3. Special discussion on electronic ignition system mainly introduces the structure and working principle of various electronic ignition systems, as well as the common fault diagnosis and troubleshooting methods of non-contact electronic ignition systems, computer ignition systems with distributors and electronic ignition systems without distributors. Through the in-depth discussion of these problems, we are familiar with the electronic ignition system.

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