Engine Electrical Repairs
Automotive Electrical System Basics
The battery is the backbone of your vehicle’s electrical system. It provides the electrical current that allows the vehicle to start and powers the other components, like the ignition and fuel systems, which in turn create the combustion needed for the engine to operate.
Although the battery supplies the car’s power, the starter is what actually activates the engine. It is connected to the ignition switch, which is typically activated by key. Receiving a punch of energy from the battery, the starter rotates the flywheel, which turns the crankshaft, which moves the pistons of the engine.
The alternator is necessary for endurance; without it, the battery would not be able to run for an extended period of time. The alternator keeps the battery charged and the electrical system running, but it isn’t necessary for the car to start. Some older cars have a generator instead, but modern alternators are preferable because they are lighter, stronger, and more efficient.