What are the control methods of automotive circuits?
2 Answers
Automotive circuit control methods include: 1. Power circuit: Also known as the charging circuit, it consists of the battery, generator, regulator, and charging indicator device; 2. Starting circuit: Composed of the starter, relay, starting switch, and starting protection circuit; 3. Lighting and light signal device circuit: Includes headlights, fog lights, position lights, turn signals, brake lights, reverse lights, interior lights, and related control relays and switches; 4. Ignition circuit: Consists of the ignition coil, distributor, electronic ignition controller, spark plugs, and ignition switch; 5. Instrument information system circuit: Composed of instruments and their sensors, various warning indicators, and controllers; 6. Electronic control system circuit: Includes the engine control system, automatic transmission and constant speed control system, anti-lock braking system, and airbag control system.
I've been driving for over twenty years and am quite familiar with automotive electrical circuit control. The main methods include switch control, which refers to various buttons and levers on the center console—press one and the light turns on, simple and straightforward manual operation. Then there's relay control, which acts like a middleman, using a small current switch to control a high current circuit, protecting the wiring from burning out; headlights or fans often rely on this. There's also fuse control, which cuts off the circuit when overloaded to prevent fires, and it's easy to check in older cars. Modern cars use ECU control, where the computer automatically manages lights, air conditioning, etc., based on sensors—super convenient; when I drive an automatic car, the sensor-activated headlights are especially useful in the rain. Additionally, there's body module control, which manages windows, doors, and locks—during maintenance, it's important to check for poor wiring connections to avoid accidents. Each method is crucial for daily safety, so regular checks are necessary.
