volkswagen bjn, cfra

Volkswagen Group have produced a number of W12 internal combustion piston engines for their Volkswagen, Audi, and Bentley marques, since 2001.
The only mass-production W12 engine is the Volkswagen 6. 0 WR12 48v, a four-bank design which was released in 2001. This engine has been used in several models from the brands Audi, Bentley, and Volkswagen, and in 2003 a turbocharged version was released.
The engine is constructed by mating two narrow-angle 15° VR6 engines at an inclined angle of 72°. The narrow angle of each set of cylinders allows just two overhead camshafts to drive each pair of banks, so the W12 engine has the same number of camshafts as a V12 engine. The W12 engine has a very compact design for a 12-cylinder engine, with the overall size of the 6. 0 L engine being smaller than Volkswagen's contemporary 4. 2 L V8 engine....