Hyundai Elantra MD/UD: Alternator. Description and Operation
Description
The charging system included a battery, an alternator with a built-in
regulator, and the charging indicator light and wire.
The Alternator has eight built-in diodes, each rectifying AC current to
DC current.
Therefore, DC current appears at alternator "B" terminal.
In addition, the charging voltage of this alternator is regulated by the
battery voltage detection system.
The alternator is regulated by the battery voltage detection system. The
main components of the alternator are the rotor, stator, rectifier, capacitor
brushes, bearings and OAD (Overrunning Alternator Decoupler) pulley. The brush
holder contains a built-in electronic voltage regulator.
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1. Brush 2. OAD (Overrunning Alternator Decoupler) pulley 3. Rotor 4. Ststor 5. Rectifier |
Alternator Management System
Alternator management system controls the charging voltage set point in
order to improve fuel economy, manage alternator load under various operating
conditions, keep the battery charged, and protect the battery from over-charging.
ECM controls generating voltage by duty cycle (charging control, discharging
control, normal control) based on the battery conditions and vehicle operating
conditions.
The system conducts discharging control when accelerating a vehicle. Vehicle
reduces an alternator load and consumes an electric power form a battery.
The system conducts charging control when decelerating a vehicle. Vehicle
increases an alternator load and charges a battery.
