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44 TDI®
The piezo injectors open and close
in fractions of a millisecond and
inject fuel several times into the
combustion chamber at pressures
of up to 1,800bar. In some cases,
an injection process can involve the
injection of the tiniest of amounts
weighing less than a thousandth
of a gram.
Pre-injection results in a
“gentle” combustion process
and consequently excellent
combustion acoustics and
agreeable engine running
characteristics.
One in every two Audi cars sold today is a diesel.
What sounds perfectly normal now was cause
for huge excitement 20 years ago, when Audi
revolutionised the market with the first 2.5 litre
TDI engine. Since then, developments such as
common rail technology have made TDI even
more efficient. Piezo injectors ensure the fuel is
finely and precisely distributed. Consequently,
since the first TDI, the engines have become
more economical, whilst specific output has
increased. So it was only logical that a diesel
car should then enter the world of motorsport.
And successfully too: in 2006, Audi was the first
car maker to win the Le Mans 24 Hours with a
diesel-powered race car, the Audi R10 TDI – a
victory which it has repeated several times over,
most recently in 2011.
Powerful TDI engines in 3 power outputs are
available for the Audi A7 Sportback, which of
course feature intelligent common rail diesel
technology. With a hefty 580 Nm of torque,
the 180 kW 3.0 TDI quattro accelerates your
A7 Sportback from 0 to 100km/h in 6.3sec-
onds, the 230 kW 3.0 TDI quattro in just 5.3 sec-
onds. And the 150 kW 3.0 TDI, with an extremely
low consumption of 5.1 l and CO₂ emissions of
just 135 g, proves that efficiency does not prevent
driving pleasure.
The 3.0 TDI with 180 kW is also available as a
clean diesel version with quattro and dual-clutch
transmission S tronic. This engine uses tech-
nology which specifically reduces nitrogen oxides.
In this version it complies with the EU6 emission
standard.
The fuel consumption and CO₂ emission figures can be found from page 108 onwards.
TDI®
In other words: Where is the tank?
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