2011 PORSCHE 911 CARRERA steering

1819
Strength
|
Engineering
Let’s forget the future for a moment.
As we discover it in the present.

Engineering.
What use is the engineering of tomorrow
when it can be found on the road today?
None. So let ’s turn to the here and now.
The engines, as you would expect,
are characterised by six horizontally
opposed cylinders. The 3.4-litre engine in
the 911 Carrera and 911 Carrera Cabriolet
produces 257 kW (350 hp); in the
911 Carrera S and 911 Carrera S Cabriolet,
the 3.8-litre engine develops 294 kW
(400 hp). All models are equipped with
direct fuel injection (DFI) and VarioCam Plus
for increased power and reduced fuel
consumption. This power is transmit ted
to the wheels by the new and efficient
7-speed manual gearbox or, optionally, by efficiency-enhanced Porsche

Doppel kupplung (PDK), which offers
gear changes with no interruption
in the flow of power.
Both engines deliver improved sport y
performance compared with the engine
in the previous model and yet fuel
consumption has been reduced by up
to 16 %. How was this achieved? One
explanation is the reduced capacit y of
3.4 litres in the 911 Carrera models.
Another is the total redevelopment of the
engine peripherals with groundbreaking
efficiency-improving technologies. As standard, these include the auto
start/stop function, electrical system
recuperation and intelligent thermal

management as well as the new, energy-
saving electromechanical steering system
and, in the case of PDK, the introduction
of the coasting function (for more
information, please refer to page 43
onwards).
The chassis is also packed with forward-
looking technology. Fitted as standard
in the 911 Carrera S and 911 Carrera S
Cabriolet, Porsche Torque Vectoring
(PTV) increases dynamic performance.
Available as an option for the S models,
Porsche Dynamic Chassis Control (PDCC)
improves dynamic performance further still. Dynamic engine mounts, included as
part of the optional Sport Chrono Package,
are now available in a 911 Carrera for
the first time. These provide perceptibly
more stable handling under load change
conditions and in fast corners.
The new 911 has a light weight composite
construction in aluminium and steel. Used
extensively and in just the right places,
lightweight aluminium improves fuel
economy and dynamic performance and
helps to achieve a low weight to power
ratio of 4.7 kg / kW (3.5 kg / hp) for the
9 11 C a r r e r a S .
The future of the sports car begins now.
For fuel consumption and CO
2 emissions please refer to page 129.

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3233
Temperament
|
Engines
Engine cross section: 3.8-litre boxer engine
911 Carrera S models: 440 Nm at 5,600 rpm, 294 kW (400 hp) at 7,400 rpm
1. High - pressure pump
2. High-pressure injector
3. Ignition rod module
4. Camshaft controller
5. Valve lif t adjustment switch valve
6. Switch tappet with integrated valve clearance
compensation
7. Intake camshaf t
8. Intake valves
9. Valve spring
10. Combustion chamber with Alusil cylinder liner
surface
11. Forged aluminium piston
12. Forged connecting rod
13. Crankshaft
14. Water pump
15. Air-conditioning compressor
16. Power steering pump (in conjunction with PDCC)
17. Vibration damper
18. Alternator pulley with freewheel
19. Hydraulic belt tensioner
20. Resonance valve
21. Resonance distributor
22. Resonance valve actuator
23. Intake manifold with integrated sound chamber
24. Electronically controlled throttle valve
25. Oil filter
26. Electronic map-controlled thermostat
27. Vacuum pump
28. Coolant jacket
29. Crankcase breather
30. Timing chain
31. S t a r t e r
911 Carrera models: 390 Nm at 5,600 rpm, 257 kW (350 hp) at 7,400 rpm
The new 3.4-litre engine.
The 911 Carrera and the 911 Carrera
Cabriolet are equipped with a 3.4-litre
boxer engine with direct fuel injection
(DFI) and VarioCam Plus. It develops

257 kW (350 hp) at 7,400 rpm and the
maximum torque is 390 Nm at
5,600 rpm.
For the 911 Carrera with 7-speed manual
gearbox, this means acceleration from
0 to 100 km/ h (0 to 62 mph) in 4.8 sec -
onds and a top speed of 289 km/ h
(179 mph). The figures
achieved by the
911 Carrera Cabriolet
are 5.0 seconds
and 286 km/ h (177 mph). With the
optional Porsche Doppelkupplung (PDK),

it means figures of 0 to 100 km/ h
(0 to 62 mph) in just 4.6 seconds and
a top speed of 287 km/ h (178 mph)
for the 911 Carrera and 4.8 seconds
and 284 km/ h (176 mph) for the
911 Carrera Cabriolet.
The new 3.8-litre engine.
The 911 Carrera S and the 911 Carrera S
Cabriolet are powered by a 3.8-litre boxer
engine with direct fuel injection (DFI)
and VarioCam Plus. It produces 294 kW
(400 hp) at 7,400 rpm and the maximum
torque of 440 Nm is achieved at
5,600 rpm.
As a result, the new 911 Carrera S
with 7-speed manual gearbox completes
the sprint from 0 to 100 km/ h (0 to
62 mph) in
4.5 seconds and reaches
a top speed of 304 km/ h (188 mph). The
911 Carrera S Cabriolet
achieves 4.7 sec -
onds and 301 km/ h (187 mph). With
the
optional Porsche Doppelkupplung (PDK),
the figures are 0 to 100 km/ h (0 to
62 mph) in 4.3 seconds and a top speed
of
302 km/ h (187 mph) for the Coupé and
4.5 seconds
and 299 km/ h (185 mph) for
the Cabriolet.
For fuel consumption and CO
2 emissions please refer to page 129.
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1000
294 kW (400 hp)440 Nm
300
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Power (kW)
T orque (Nm)
Engine speed (rpm)
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220 240 260
460
440
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2000 2500300035004000450050005500600065007000
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Power (kW)
T orque (Nm)
Engine speed (rpm)
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400 420
220 240 260
460
440
257 kW (350 hp)
390 Nm

4445
Temperament

| Chassis and body
“That can’t be done.”
If ever a sentence gave motivation to sports car designers, this is it.

Chassis and body.
A solid identit y tends to be described
with words like stability, directness or
substance. This might sound a lit tle
serious but, when it comes to the chassis
and body, we think that this is entirely
the right approach.
The best example is the engineered
design. Indeed, dynamic per formance
and ride comfort fundamentally depend
on factors such as vehicle weight, body
rigidity, wheelbase, axle construction
and steering. With the new 911, we
challenged our engineers to push the
boundaries of what is possible. Chassis control systems make a key

contribution to the 911 driving experience
and thus to the 911 identit y. These
include Porsche Stability Management
(PSM), Porsche Active Suspension
Management (PASM), which comes as
standard in the 911 Carrera S models,
Porsche Torque Vectoring Plus (PTV Plus).
Porsche Dynamic Chassis Control (PDCC)
is additionally available as an option for
the 911 Carrera S.
Yet, there is still scope for improvement
as far as sport y performance is
concerned. The optional Sport Chrono
Package triggers an adrenaline rush
at the push of a but ton. Dynamic engine
mounts, until now exclusively reserved
for 911 GT and Turbo models, may not be
capable of breaking the laws of physics
but they do succeed in exploiting them
to their own advantage – and yours.

5455
Temperament

| Chassis and body
It ’s easy, and even makes sense, to carry
on in your usual way, but what happens
if a sudden change of direction leaves
you thrown off course? Then, it all comes
down to personal strength.
A Porsche has a clear sense of purpose
and is the embodiment of strength.
It demonstrates this with sport y and pre -
cise handling and excellent road holding.
With the optional Porsche Dynamic
Chassis Control (PDCC) for the S models
of the new 911, these characteristics can
be further accentuated: the 911 Carrera S
and 911 Carrera S Cabriolet hold
the
road even bet ter and deliver even sportier
performance. PDCC is an active anti-roll system that
anticipates and reduces lateral body
movement during cornering manoeuvres.
In addition, it minimises the lateral insta
-
bilit y of the vehicle on uneven ground.
This effect is achieved with the aid of
hydraulic stabilising actuators in the form
of cylinders designed to optimise camber.
Lateral roll is counteracted by forces
generated at each individual wheel, based
on steering angle and lateral acceleration.
Rapid cornering in the 911 Carrera without PDCC (illustrative example) Rapid cornering in the 911 Carrera S with PDCC (illustrative example)
You appreciate directness.
But love a few twists and turns.

Porsche Dynamic Chassis Control (PDCC).The results are improved dynamic
performance and increased ride comfort
at all speeds, as well as optimised turn-in
and stable load transfer characteristics.
In simple terms, the t yres and vehicle
hold the road bet ter and you can steer
through corners faster and in a more
re l a x e d m a n n e r.
PDCC sets new standards for handling
performance, ride comfort and driving
pleasure. In the new 911, your ‘usual’
way suddenly becomes the Porsche way.

5657
Temperament

| Chassis and body
Electromechanical power steering.
Another possible definition of efficiency
is a system that works only when it is
needed, and then does so in a particularly
effective way.
This was the guiding principle for our
engineers in the development of the new electromechanical power steering.
Statistics show that a car drives in a
straight line 90
% of the time. Unlike
conventional hydraulic pumps, the electric
motor uses energy only when the steering
wheel is actually turned. The absence
of hydraulic fluid also makes the system
more beneficial to the environment.
As far as the other 10 % is concerned, we’re
optimally prepared as the steering system
is t ypically Porsche. It features a variable
steering ratio and responds sensitively
and directly at the same time as providing
customary agility, a high level of comfort
and precisely selected feedback from the
road. Our definition of efficient.Power steering Plus.
Power steering Plus, the comfort-enhancing
power-steering system, is available
as an option for the 911 Carrera models.
At high speeds, the steering is as firm as
you would expect and responds with
extreme precision while steering comfort
remains as high. At low speeds, the steering
ratio of Power steering Plus adjusts for
much easier manoeuvring and parking.
SPORT button.
Fit ted as standard, the new SPORT
but ton enables you to select a suspension
setup where the emphasis is on either
comfort or sport y performance. At the
push of a button, the electronic engine
management system switches the engine
mapping to offer an even sharper
response and engine dynamics that are
more direct.
In vehicles with Porsche Doppelkupplung
(PDK), upshifts take place at higher
engine speeds and downshifts happen sooner. In addition, coasting mode and
the auto start/stop function are automati
-
cally deactivated. If fitted, the optional
sports exhaust system is also activated
automatically.
Sport Chrono Package.
The Sport Chrono Package including
dynamic engine mounts is available
as an option. This integrated system
provides simultaneous enhancement for
the chassis, engine and transmission.
Every day can be sports day.

Additional performance enhancement systems.

5859
Temperament

| Chassis and body
Included in the package are a performance
display, a digital and an analogue stop -
watch and the SPORT PLUS but ton. An
additional display in the steering wheel
and instrument cluster indicates whether
the SPORT but tons and Launch Control
have been activated.
On activation of SPORT PLUS mode,
Porsche Active Suspension Management (PASM) and, in the S model, optional

Porsche Dynamic Chassis Control (PDCC)
switch to a harder damping set ting
and offer more direct steering and,
therefore, better road holding.
In SPORT PLUS mode, the trigger thresh -
old
for PSM is raised. Agilit y is perceptibly
enhanced when braking for corners with
PSM, allowing sportier braking and exit acceleration. For maximum dexterit y,
PSM can be set to standby while the car
is still in SPORT PLUS mode. For safet y,
it is set to intervene automatically only
when ABS assistance is required on
both the front wheels.
In combination with PDK, the Sport
Chrono Package has t wo additional

functions for a sport y drive that borders on a motorsport experience. The first

is ‘Launch Control’, which can be used
on the track to achieve the best possible
standing start – a racing start.
The second function is the ‘motorsport-
derived gearshif t strategy’. Using this,
Porsche Doppelkupplung (PDK) is geared
up for extremely short shift times and
optimum shift points for the maximum
acceleration available. This combination
of uncompromising and involving perfor -
mance is ideal for the racetrack.
A key component of the Sport Chrono
Package is the stopwatch mounted on
the dashboard. In conjunction with PCM,
a special performance display enables
you to view store and evaluate lap times
or other driving times. It shows the total
driving time, lap distance, lap number
and lap times recorded so far.
A feature of the Sport Chrono Package
borrowed from motorsport is the dynamic
engine mounts. These exploit the laws
of physics for your own driving pleasure.
Dynamic engine mounts.
You don’t have to take the new 911 onto
the racetrack. But you can, more so
than ever, because dynamic engine
mounts are now included as part of the
Sport Chrono Package. Based on the
engine mounts of the 911 GT3 and
911 Turbo models, it is the first time that they have been available for a

911 Carrera. Even if track racing is not
for you, dynamic engine mounts make
a decisive contribution to dynamic
performance on the road, too.
The electronically controlled system mini -
mises the oscillations and vibrations of the
entire drive train, especially the engine, and combines the benefits of a hard or
soft engine mounting arrangement.
A hard engine mounting delivers optimum
dynamic performance because it offers
the highest degree of handling precision
possible. Soft engine mounts, on the
other hand, minimise oscillations and
vibrations. While comfort is improved on
uneven road surfaces, this comes at

the expense of dynamic performance.
Our engineers have solved this problem
by enabling the engine mounts to adapt
their stiffness and damping properties to
changes in driving st yle and road surface
conditions. This has been achieved by
use of a fluid with magnetic properties in interaction with an electrically generated
field. For the driver, the results are tangi
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ble. Handling is perceptibly more stable
under load change conditions and in
fast corners. Whenever a less assertive
driving st yle is adopted, the dynamic
provide a higher level of comfort.

6263
Temperament

| Chassis and body
PTV in conjunction with the manual gear -
box, or PT V Plus with Porsche Doppel-
kupplung (PDK), are available as options
for the 911 Carrera models and standard
in the 911 Carrera S models. Both systems
actively enhance vehicle dynamics and
stability. Operating in conjunction with a
mechanical (PT V) or electronic (PT V Plus)
rear differential lock, they work by
braking the rear wheels as the situation
demands.
As a function of steering angle and steering
speed, accelerator pedal position, yaw
rate and vehicle speed, PT V and PT V Plus are able to improve steering response
and steering precision by specific braking
of the right or left rear wheel.
To be more precise, this means that when
the car is driven assertively into a corner,
moderate brake pressure is applied to the
inside rear wheel. Consequently, a greater
amount of drive force is distributed to the
outside rear wheel, inducing an additional
rotational pulse (yaw movement) around
the vehicle’s vertical axis. This results in
a direct and sport y steering action as the
car enters the corner.
Attack the corners.

Maintain good posture.

Porsche Torque Vectoring (PTV) and
Porsche Torque Vectoring Plus (PTV Plus).At low and medium vehicle speeds, PT V
and PT V Plus significantly increase agilit y
and steering precision. At high speeds
and when accelerating out of corners,
the rear differential lock ensures greater
driving stability. With PTV, the differential
lock is regulated mechanically; with PT V Plus, it is regulated electronically and
the torque distribution is infinitely varia
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ble. Whichever system is fit ted, it interacts
with Porsche Stabilit y Management (PSM)
to improve driving stabilit y on a range of
surface conditions, including the wet and
snow. For the driver, this means remarkable

stability, easier handling and outstanding
traction as well as greater agilit y at every
speed with precise steering and stable
load transfer characteristics. What else?
Unrivalled driving pleasure at every t wist
and turn.

7273
Composure
| Safet y
The new 911 models are equipped as
standard with Bi-Xenon headlights

including a headlight cleaning system and
dynamic range control. With dipped or
main beam, the road ahead is illuminated
more uniformly.
The rest yled LED front light units
incorporate direction indicators, daytime -
running lights and position lights.
Automatic headlight activation is also
included as standard. The moment it gets
dark, the daytime running lights switch
off and the dipped beam headlights
switch on automatically. Cut ting edge LED technology is also used
for the taillights, the high-level third brake
light, the licence plate illumination, the
rear direction indicators and the rear fog
light. LEDs provide bet ter illumination and
respond more quickly to driver input.
In the event of sudden braking, the adaptive
LED brake lights begin to pulsate. If the
vehicle is braked to a halt, the hazard
warning lights will switch on automatically,
alerting following traf fic more quickly to

a critical situation.
The lighting system features an automatic
switch-off and the ‘Welcome Home’
function. It ’s good to know what ’s around
the next corner or on the way to your
front door.
Porsche Dynamic Light System (PDLS).
The Porsche Dynamic Light System
(PDLS) is available as an option.
Its dynamic cornering light function
swivels the headlights towards the inside
of a bend, based on steering angle and
road speed, in order to illuminate more of the road at tight bends and turns.

Put simply, the road ahead is illuminated
the moment you enter a bend.
The system also of fers speed -sensitive
headlight range control. With adaptive
light systems, it is possible for the maxi -
mum range of the dipped beams to be
increased as a function of the speed of
Taillights and high-level third brake light Porsche Dynamic Light System (PDLS) cornering lights
Porsche Dynamic Light System (PDLS) headlights
To see something coming, experience helps.
So does forward-looking technology.

Lights.the vehicle. PDLS takes care of this
automatically in t wo stages. Stage 1 is
the basic position for driving in cit y traffic,
for example. Stage 2 is designed for
driving at faster speeds, such as on the
motorway. Above 130 km/ h (80 mph),
the range is adapted again.
Another feature of PDLS is the adverse
weather function, activated whenever the
rear fog light is switched on. It reduces
the effect of reflection phenomena in
poor visibilit y conditions to avoid the risk
of the driver being dazzled.