Audi 2009 A8, Ценовой и технический каталог

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6
Petrol Diesel
There are two kinds of engine available on this model – the W12 petrol engine
and the FSI
® direct-injection engine. FSI ® is a unique Audi technology,
originally developed for the Le Mans 24-hour endurance race to deliver
increased power and torque as well as enhanced fuel efficiency. The way it
does this is, in theory, very simple. Fuel is injected directly into the
combustion chambers, ‘unthrottling’ the engine, reducing heat-loss and
increasing output – all whilst reducing fuel consumption and exhaust
emissions. Ideal for the buyer who wants a sporty, exhilarating drive without
the drawbacks of excessive fuel costs or high emissions-based taxation.
All diesel engines from Audi are known as TDI ®
. This impressive technology was originally
pioneered by Audi in 1989, marking a departure from the noisy, fuel-thirsty diesel engines
of the past. Like its FSI
® petrol counterpart, the TDI ® diesel engine is designed for power and
performance, with low fuel consumption and CO
2
emissions. The working principle of the
TDI ® engine is based upon precision and compression. A turbocharger supplies fresh air to
the engine, ensuring optimum filling of the cylinder. Immediately after compression, an
injector then delivers fuel into the combustion chambers at a very high pressure. The
result – you get the most in terms of performance and economy from every drop of fuel
that enters the tank.
Engines