Description Of An Operating Cycle
- Conventional battery charging. The battery's SoC is below 77 % (poorly charged battery) and the system strives to charge the battery up to 80 %. Brake energy regeneration is not permitted. The charge voltage increases (level depending on the battery temperature) so that the battery charges. When the correct SoC is reached, brake energy regeneration is permitted.
- Battery not charging. The engine's efficiency is low (the engine's torque is needed to propel the vehicle) and the battery is not charged. The alternator is controlled so that only the vehicle's power consumers are supplied with the necessary current.
- Engine braking (brake energy regeneration). The alternator charges the battery with a voltage up to 15.0 V (charges with energy).
- The battery produces energy. The engine's efficiency is low (the engine's torque is needed to propel the vehicle). Regeneration of previously stored energy with a fast current output from the battery down to a voltage of 12.4V.
- The battery produces energy. The engine's efficiency is low (the engine's torque is needed to propel the vehicle). Regeneration of previously stored energy with a slow current output from the battery down to a voltage of 12.5 V
NOTE:
When driving in the dark, the lowest permitted charge voltage is limited with the purpose of providing maximum output for lighting for example.
The dotted graph illustrates when quick brake energy regeneration is activated, i. e. when the function permits a greater voltage level during brake energy regeneration and more energy can thereby be regenerated (charged in the battery). The solid graph illustrates when slow regeneration is activated.