Technical data
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TFSI®
Dual-circuit cooling
Engine speed sensor with reverse rotation
detection for start-stop system
Water-cooled charge air with charge air cooler
in the inlet manifold
Weight-optimised camshaft drive
Power train with reduced friction losses
Alternator with LIN connection
TFSI® technology is employed in the new Audi
A1. Its unique feature is that it combines the ad-
vantages of FSI® – efficiency and dynamism –
with a turbocharger, which ensures even better
power delivery.
The newly developed 1.2 TFSI engine with 63 kW
of power has a die-cast aluminium engine block
with innovative, cast iron liners and a mainte-
nance-free toothed chain drive. The lightweight
pistons are low-friction while the oil and cooling
water circuit, with dual-circuit cooling, ensure a
high level of efficiency. You will soon notice this
from the pleasantly low consumption, averaging
just 5.1 l/100 km, and the maximum torque of
160 Nm, which is available from an engine speed
of just 1,500 rpm.
The sporty 1.4 TFSI engine with the optional
7-speed S tronic generates 90 kW and is clearly
designed for top performance combined with
economical fuel consumption. It powers the
Audi A1 to 203 km/h with a torque of 200 Nm,
likewise available from 1,500 rpm. Its water-
cooled charge air cooler is integrated in the inlet
manifold; this reduces the volume of the charge
air system and delivers increased dynamism.
For even more dynamic performance, the 1.4 TFSI
(136 kW) features a two-stage turbocharging
system. It accelerates the Audi A1 to 227 km/h
with a torque of 250 Nm from 2,000 rpm.
Many hours of development.
Thousands of miles of testing.
And for what reason?
In just a few seconds you
will understand why.
The engine management system
calculates the injection quantity and
ignition timing according to how
much power the driver wants. In
normal operation, the injection
pressure is between 30 and 120 bar.
The fuel consumption and CO₂ emission figures can be found from page 80 onwards.
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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
1,600bar. In some cases, an injection
process can involve the injection of the
tiniest of amounts weighing less than
a thousandth of a gramme.
Pre-injection results in a “gentle”
combustion process and consequently
excellent combustion acoustics and
agreeable engine running characteris-
tics.
Alternator with LIN connection
1,600 bar; 6-fold high pressure fuel injection
Performance-optimised oil pump
Exhaust gas turbocharger with
variable turbine geometry
Power train with reduced friction losses
The fuel consumption and CO₂ emission figures can be found from page 80 onwards.
One in every two Audi cars sold today is a diesel.
Hardly surprising, since developments such as
common rail technology have made TDI more
and more efficient. The logical consequence was
for a diesel to enter the world of motorsport. And
successfully too: in 2006, the Audi R10 TDI was
the world’s first diesel-powered race car to win
the Le Mans 24 Hours – and then repeat this vic-
tory several times over.
Two 1.6 litre TDI engines with power outputs
of 66* and 77 kW are employed in the Audi A1.
The common rail injection system has four in-
jectors and is characterised by an excellent bal-
ance of performance, driving comfort and engine
acoustics. The 77 kW engine, therefore, con-
sumes an
average of 3.9 l/100 km and emits
103 g CO₂/km.
The figures for the 66 kW engine*,
which is available with 5-speed manual transmis-
sion or, upon request, with the 7-speed S tronic,
are even more impressive. In conjunction with
the manual transmission, it consumes just
3.8 l/100 km while producing CO₂ emissions of
99 g/km (combined). It goes without saying that
both engines comply with the EU5 emission
standard.
Start a revolution.
And keep repeating it.
TDI:
* For more information on when this feature will be available, please contact your Audi partner.
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