
Besides the combustion engine, electric motor, and automated six-speed transmission, the hybrid-drive system as a whole also consists of a compact lithium-ion battery as the high-voltage source and additional power electronics for controlling the electric motor and supplying the 24-V on-board network from the high-voltage system. It performs all the functions of a full-hybrid system: stop/start, recuperation of braking energy, support when accelerating (boosting), and electrically-powered driving. The intelligence of the system is seated in MAN's hybrid energy management, controlling the energy flow between diesel engine, electric motor, energy storage, driving axle and auxiliary units. Here, energy management optimizes the torque split between the diesel engine and the electric motor. Alongside that, power on demand is ensured for operation of the auxiliary units.