Starting the automotive electrical system is a prerequisite for the normal operation of a car. Its structural principles include the following aspects:
1. Battery Power: The automotive electrical system is powered by the battery. When the car starts, the battery outputs current to provide starting current for the engine.
2. Starter Motor Starting the Engine: When the driver turns on the ignition switch, the starting mechanism will start the engine. The starter motor consists of an electric motor, gears, a clutch, and a switch. When the driver turns on the ignition switch, the starter motor starts working, converting electrical energy into power to drive the engine.
3. Ignition System Ignition: After the engine starts, the ignition system automatically ignites the fuel. The ignition system consists of an ignition switch, ignition coil, spark plugs, high-voltage wires, and a distributor. The main function of the ignition system is to convert electrical energy into a spark to ignite the fuel, thus enabling the engine to operate normally.
4. Alternator Power: When the engine is operating normally, the alternator charges the battery and also supplies power to other devices, such as the lighting system, horn, and power windows.