Electric energy in a car is used to ignite the combustible mixture in the cylinders of a gasoline engine, start the engine with a starter, power lighting devices, light and sound alarms, instrumentation, radio receivers and electronic devices, as well as power additional electrical equipment. To supply electrical energy to the above-mentioned current consumers, an energy supply system is installed in the electrical network of the vehicle. It consists of current sources - a battery and a generator with a voltage regulator, connected in parallel with current consumers and among themselves.
Accumulator battery (AB) designed to power the starter and ignition system devices when starting the engine, power consumers when the engine is not running or at a low frequency of rotation of the generator armature, maintain a constant voltage in the power supply network when the load on the generator changes.
The generator set is the main source of current in the vehicle's power supply system, providing power to all consumers and battery charge when the engine is running at low, medium and high crankshaft frequencies. The generator set includes a generator and a voltage regulator, which serves to maintain the required voltage and current. The voltage regulator is located on the rear cover of the generator.
To transfer electrical energy from sources to current consumers, a power supply network is used, consisting of wires, connecting devices and switching devices. The electrical system has a voltage of 12 V. «Weight» fed from output «–» AB, which is located in the engine compartment of the engine.
To start the engine, a starter with a reduction gear is used. The starter switch is part of the ignition switch.
The alternator installed on the Sharan vehicle, which is driven by the V-ribbed belt from the crankshaft, has a maximum current of 90 A. The battery charging indicator lamp located on the instrument panel informs about the perfect functioning of the electrical system if the battery is being charged.
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