Technical data

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The V12 engine has a cylinder centre to centre distance of 90 mm. Its cylinder angle is just 60° – consequently
virtually no vibration-inducing free inertia forces or moments of inertia occur. This results in superb
smooth-running performance.
The number of injection processes per work cycle can be exactly adjusted by means of the piezo injectors –
up to five processes. Other injection processes are also possible in addition to the main injection. The pilot injection
processes temper the acoustic harshness of the combustion process, which is particularly audible at low loads.
The crankcase is made of a high-tech material. It is manufactured using a patented casting process and has remark-
able advantages: it is more rigid, more resistance to fatigue and lighter than comparable materials.
Concentrated energy: with a length of 684 mm, the diesel engine is extremely compact – an important
precondition for integration into a standard production vehicle.
So much power – with comparatively low consumption. The Audi Q7 V12 TDI quattro consumes 11.3 litres
of fuel per 100 km.
The crankshaft is made from a chromium molybdenum steel alloy, the pistons from aluminium.
The maintenance-free chain drive is situated on the rear side of the engine to save space.
The fuel consumption and CO
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emissions figures can be found on page 53.
The Audi Q7 V12 TDI quattro reaches its maximum torque of
1,000 Nm at a mere 1,750 rpm and keeps it stable up to 3,250 rpm. Thus
excellent performance is at your disposal from an early stage and over a wide
range. The engine moves the high-performance SUV with overwhelming
supremacy and equanimity, without losing its agility.
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Power output, kW Torque , Nm
Power output
Torque
Engine speed in rpm
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Audi introduced the TDI principle into its series production
operations back in 1989 and has continued to optimise it ever
since. This technical expertise has culminated in the development
of the V12 TDI, the most powerful Audi diesel engine so far.
fig.8.1
T h e first V12 diesel engine in the world in a series production
model. Thus begins a new chapter in the history of the diesel engine.
With the 6-litre TDI engine, Audi is once again demonstrating its
“Vorsprung durch Technik”.
Six litre displacement – more than you have ever had before in
an Audi Q7. That creates space for power.
368 kW accelerate the Audi Q7 V12 TDI quattro from 0 to 100 km/h
in just 5.5 seconds.
Piezo injectors inject the fuel into the combustion chamber
at high pressure (up to 2,000 bar). In doing so the fuel is
finely atomised, which results in better combustion.
You can drive the Audi Q7 V12 TDI quattro up to a top speed of 250 km/h –
after which the electronic regulation function comes into action.
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