Audi RS 7 Service Manual download pdf (Page 13)

V8 engine with 3,993 cc of displacement

maximum power output 412 kW at 5,700–6,600 rpm

maximum torque 700 Nm at 1,750–5,500 rpm

specific power output 103.2 kW/l of displacement

turbocharging with up to 1.2 bar

FSI direct fuel injection with up to 140 bar

Audi cylinder on demand

in the TFSI® engine.

Intelligent power.

V8 TFSI engine

The Audi RS 7 Sportback has a V8 4.0 TFSI engine

that features the innovative new Audi cylinder

on demand. This ensures that during partial load

operation, only four of the eight cylinders are

used – without you noticing the difference. The

engine always runs smoothly and powerfully,

but it uses less fuel and emits less CO₂.

We describe its mode of operation as “intelligent

performance”. Audi cylinder on demand selectively

closes certain cylinders, two per cylinder bank.

As a result the engine runs impressively smoothly

even during partial load operation. The deactivation

depends on several factors: the revs are between

960 and 3,500, the engine temperature must

be at least 30 °C and you must be in at least third

gear. If you then do not need the full power of

eight cylinders, the Audi valvelift system closes

the intake and outlet valves and switches off

the injection and ignition of the corresponding

cylinders. This means that neither is air taken in

and fuel injected, nor is exhaust gas emitted.

In other words: the consumption and emission

values are noticeably improved.

In addition, the V8 4.0 TFSI engine features a

start-stop system and recuperation, and it

goes without saying that it complies with the

EU5 emission standard.

Thanks to its very spontaneous responsiveness

and exceptional power delivery across the entire

engine speed range, the 8-cylinder engine

promotes an impressive driving style. Its 412 kW

accelerate the RS 7 Sportback at a torque of

700 Nm from 0 to 100 km/h in 3.9 seconds. The

engine is electronically regulated at 250 km/h,

but by request also at 280 or 305 km/h.

The fuel consumption and CO₂ emission figures as well as the efficiency class can be found on page 56.

Power output, kW

Power output Engine speed in rpm

Torque

Torque, Nm

450

400

350

300

250

200

150

100

900

800

700

600

500

400

300

200

100

10000 2000 3000 4000 5000 6000 7000

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 33 34

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Audi RS 7 Service Manual Page 13

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