Main components of a car’s electrical system
Battery
* Provides power to electrical systems when the engine is off.
* Stores electricity in chemical form.
Generator
* Converts mechanical energy from the motor into electrical energy.
* Charges the battery and powers electrical systems while the engine is running.
Starter
* Converts electrical energy into mechanical energy to start the engine.
Ignition system
* Generating a spark to ignite the fuel-air mixture in the engine cylinders.
*Includes ignition coil, spark plugs, distributor or ignition control module.
Fuel injection system
* Delivers fuel to the engine cylinders under pressure.
* Regulates the amount and time of fuel injection.
Set of instruments
*Displays important vehicle status information such as:
* Speed
* Fuel level
* Engine temperature
* Battery charge
Lighting
* Provides visibility at night and in bad weather.
*Includes headlights, taillights, turn signals and brake lights.
Alarm and anti-theft devices
* Warns of unauthorized access to the vehicle or theft.
* May include motion sensors, sirens and remote start systems.
Comfort and entertainment
* Increases comfort and pleasure while riding.
*Includes stereos, air conditioning, power windows and power seats.
Electronic systems
* Using electronics to automate and improve vehicle performance.
* Includes engine management systems, transmission control systems and safety systems.
Security systems
* Protect the driver, passengers and other road users.
*Includes airbags, anti-lock brakes (ABS) and stability control (ESP).