Vehicle electrical system with a flywheel energy storage and method for controlling a process of starting an internal combustion engine

摘要

Vehicle electrical system (10) for a motor vehicle, with a flywheel energy storage (12) with - a rotatably mounted flywheel (22) - a first and a second electrical connection (26, 28) and - an energy converter (38) for reversibly converting to the Connected electrical energy (US) into kinetic energy of the flywheel (22), wherein an additional terminal (30) is branched from the first terminal (26) and an electrical switch (34) between the first and the additional terminal (26, 30 ), characterized in that at least one electrical load (20) is connected to the first connection (26) and to the additional connection (30) a vehicle battery (14) and a starter (16) for an internal combustion engine are connected, and in that the electrical switch (34) is a MOSFET whose parasitic diode (36) is coupled with its anode to the additional terminal (30).