Audi 6.0L W12 Engine in the Audi A8L

Online PDF Audi 6.0L W12 Engine in the Audi A8L

The new top of the line models from the Volkswagen Group feature an innovative generation of W engines developed from the model used for the VR engine family.
To achieve this, mass produced components have been integrated into a completely new engine concept.
This process has yielded compact, multi-cylinder gasoline engines of a consistently high standard not previously achieved in passenger car series production.

For example, the W12 6.0 L engine, featured for the first time in the Audi A8L, is currently the most powerful 12-cylinder engine available in this vehicle class, providing a combination of quality and optimum performance.

Special Features of the W12 

  1. 12-Cylinder, W Design Gasoline Engine
  2. Aluminum Engine Block and Cylinder Heads
  3. Oil Supply with Wet Sump Lubrication
  4. Twin Overhead Camshafts with Four Valves Each per Cylinder
  5. Roller-Type Rocker Fingers Valve Operation
  6. Infinitely Variable Timing Control for Inlet and Exhaust Camshafts

The new generation of W engines was developed to achieve a more compact design in relation to the number of cylinders. The W engines incorporate design features of the VR engine generation. Combining two VR6 engines using a bank angle of 72° and a joint crankshaft creates a “V” V12 engine or a W12 engine.

V-engines with a small V angle are also called VR engines.  They benefit from the design advantages of both the smooth running in-line engine, and the short design of the V-engine. With a length of 20.2 in. (513mm) and a width of 28.0 in. (710mm), the W12 engine has the same space saving dimensions as the V8 5V engine.

The cylinder block is cast from a hyper-eutectic aluminum silicon alloy (Alusil). When this alloy solidifies, it produces pure silicon crystals and aluminum silicon mixed crystals. A special cylinder honing process exposes the separated silicon crystals and the process creates wear resistant cylinder contact surfaces that eliminate the need for additional liners. The coolant reservoir, water pump housing and thermostat housing are integrated into the vee of the cylinder banks and reduce the number of external coolant pipes.

Major Advantages of this Monolithic Solid Aluminum Block:

  1. Optimum heat transfer from cylinder surface to heat-dissipating water jacket
  2. No thermal expansion problems compared to material combinations (e.g.  inserted grey cast iron liners)
  3. Same thermal expansion characteristics allow minimal piston running clearance over the entire temperature range and results in smooth operation
  4. Considerable weight saving

Audi 6.0L W12 Engine in the Audi A8L For Free

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