What are the functions of the various systems in a car?

Automotive electrical systems include power systems, starting systems, ignition systems, lighting systems, signaling systems, instrumentation systems, and electronic control systems.

The power system includes batteries, generators, regulators and so on. Among them, the generator is the main power source. When the generator works normally, the generator to the vehicle power supply equipment, while charging the battery. The main role of the battery is to start the engine to the starter motor power supply, while assisting the generator to power equipment. The regulator's role is to make the output voltage of the generator to keep constant.

The starter system includes the starter, starter switch, starter relay and so on, its function is to start the engine.

The ignition system includes ignition switch, ignition coil, distributor assembly, spark plugs, etc., whose function is to produce high-voltage electric sparks to ignite the mixture in the cylinder of the gasoline engine.

Lighting system includes all kinds of lights inside and outside the car and its control device, used to ensure the safety of night driving.

Instrumentation system includes a variety of electrical instruments (ammeter, charging indicator or voltmeter, oil pressure gauge, temperature gauge, fuel gauge, speed and odometer, engine tachometer, etc.). It is used to display the engine