Mercedes-Benz M256 Engine with 48-Volt and ISG (Integrated Starter Generator)

48-volt electrical system: Offers four times the power of its 12-volt predecessor system at identical currents and makes fuel savings possible. Ancillaries such as the refrigerant compressor of the climate control system can be operated on electric power. The low-voltage system does not require the additional safety architecture of a high-voltage network. Integrated Starter Generator (ISG): The functions of starter and alternator are combined in one electric machine. Unlike a BSA (Belt-driven starter-alternator), these starter generators are not driven by a belt.