摘要 |
The invention relates to methods of controlling kinetic energy recovery systems (KERS), to controllers, KERS, drivetrains and vehicles comprising said KERS and controllers. The KERS comprises an energy storage system. In an embodiment, a vehicle is provided with a first vehicle operating mode (VOM1 ) wherein the energy storage system has a first target state of charge (TSOC1 ), and with a second vehicle operating mode (VOM2) wherein the energy storage system has a second target state of charge (TSOC2). The first or second vehicle operating mode is selected and energy is transferred between the energy storage system and the vehicle in order to achieve the target state of charge associated with the selected vehicle operating mode. In another embodiments, the KERS comprises a variable power transmission device adapted to transfer energy to and from the energy storage system. The energy storage system is maintained at suitable energy levels for the vehicle's driving conditions. |