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Mercedes returns to the Inline 6 with 48 volt electric system

Discussion in 'General Automotive Discussion' started by doublespaces, Jun 5, 2018.

  1. doublespaces

    doublespaces Administrator

    2009 E93 335i
    The AMG GT 53 and AMG CLS 53(among others) will sport the new M256 3.0 liter turbo inline six power plant. This new engine was designed around a 48 volt electrical system and comes with a twin scroll turbo and some variations also include an electric supercharger(eZV). All known M256 models come with an Integrated Starter-Alterator(ISG) which is located inside the transmission bell housing. This type of technology has also been called a Belt Alternator Starter(BAS) by other manufacturers but located on the engine pulley system rather than inside of the transmission bell housing area. The ISG will double as not only a starter, but also a generator and electric motor which can provide about 15 kw of additional power for getting the engine going after leaving from a stop as well as coasting while on the highway.