Alternator Management System

The 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. The 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 the vehicle is accelerating. The vehicle reduces the alternator load and consumes electric power from the battery.

The system conducts charging control when the vehicle is decelerating. The vehicle increases the alternator load and charges the battery.