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Audi A8 type 4N Electrics and electronics Self Study Programme 664 For internal use only. Audi Service Training Back Forward Ξ Contents The fourth generation of the brand lfagship is once again the The mild hybrid dri e in the ne Audi A8 comprises 2 central reference point deifning …orsprung durch Techni thans to a ne building blocs. –ne of them is the ater cooled belt starter design language an inno ati e touch concept and the systematic generator mounted to the end face of the engine. A high perform  electriifcation of the dri eline. Not only that the Audi A8 type 4N ance poly … belt connects it to the cranshaft. The belt starter is the orld‡s ifrst production car to be de eloped for highly generator has a recuperation capacity of Š2 W and produces up to automated dri ing. ˆtarting in 2‰Š8 Audi ill successi ely bring —‰ Nm of tor˜ue. piloted functions into production. The second component is a lithium ion battery ith a charge All units or in con‹unction ith the belt starter generator hich capacity of Š‰ Ah and a oltage capacity of 48 olts. The nely is the heart of the 48  olt electrical system. de eloped 48  olt electrical system is the main electrical system in This mild hybrid technology ŒŽ‘… mild hybrid electric ehicle the ne large saloon. The Š2  olt electrical system is coupled to enables the ehicle to coast ith the engine off and to restart the main electrical system ia a ™­ to ™­ con erter. The lithium  comfortably. “t also has an ad anced start stop function and a high ion battery housed in the luggage compartment is about the same recuperation capacity of up to Š2 W. siše as a large lead acid battery. A closed loop air cooling system pro ides for thermal management. Taen together these measures further impro e the already high fuel eiffciency of the engines by up to ‰.• litres per Š‰‰ m during The 48  olt ŒŽ‘… technology is particularly comfortable and actual ehicle