SYSTEM CONTROL
This system lowers the generated voltage when the vehicle is not decelerating, and raises the generated voltage when the vehicle is decelerating. This reduces the load on the engine as a result of the electric generation of the generator, thus contributing to the fuel economy of the engine. When driving at a constant speed, this system regulates the generated voltage in order to place the current integrated value close to the target value.
This control consists of a battery sensor (battery state sensor assembly), generator assembly, various sensors, switches and ECM.
The ECM detects the driving condition based on signals from various sensors, and detects the charging condition based on signals from the generator assembly and battery sensor.
The ECM stops the charging control and the generator switches to the constant voltage generation mode under the following conditions:
Low battery capacity
Low or high battery temperature
Wipers operating, blower motor operating (over high load) or tail light relay on
Battery sensor (battery state sensor assembly) malfunction
Engine started
Communication failure (LIN communication between the generator assembly, ECM and the battery sensor (battery state sensor assembly))
Generator assembly malfunction
Accumulated driving time becomes approximately 30 hours.
Voltage sensing failure