2013 PORSCHE 911 TURBO ignition

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Power | Engine
Variable Turbine Geometry (VTG)
One of the critical factors in designing a
turbocharged engine has always been the
size of the turbo units. Large turbines
create massive boost, but suffer “ turbo
lag” as they begin to spool up. Smaller
turbines respond more quickly, but lack
the capacit y to induce large amounts
of exhaust air. With Variable Turbine
Geometry (VTG), Porsche engineers
have resolved this conflict. As exhaust
flow from the engine is channeled into
the turbines, the engine management
system controls the electronically
adjustable guide vanes, changing the
vane angle so the system can replicate
the advantages of both sizes of turbo,
large and small. The optimal gas-flow
characteristics are achieved at all times. This results in a high turbine speed—
and greater boost pressure—even
at low engine rpm. With more air
available, the combustion is increased,
yielding bet ter power and torque. The
torque curve reaches its maximum
level much sooner—and stays there.
V TG also improves the response
of the turbo engine with dynamic
boost pressure development.
When the boost pressure reaches
its maximum value, the guide vanes
are opened further. By varying the
vane angle, it is possible to achieve
the required boost pressure over the
entire engine-speed range, so excess
pressure valves are no longer required.
Porsche revolutionized the modern
sports car with the original 911 Turbo.
And with innovations such as Variable
Turbine Geometry (VTG) in the new
911 Turbo, the revolution carries on.
VarioCam Plus
VarioCam Plus is a two-in-one engine
concept that adjusts the camshafts on
the intake side and controls valve lift.
The system distinguishes bet ween
normal everyday driving and maximum
power requirements and adapts to
the corresponding conditions. The
switchover is performed imperceptibly
by the electronic engine management
system. The result is spontaneous
acceleration, an extremely quiet drive,
and extraordinary engine power with
comparatively low fuel consumption. press as much of the air/fuel mixture as
possible into the cylinders. But added
compression not only increases air
volume—it also raises air temperature.
And this has a negative effect on ignition.
The 911 Turbo model’s expansion
manifold turns that principle around. The
internal geometry is radically different
from that of a resonance intake system.
Key modifications include a longer
distributor pipe with a smaller diameter,
and shorter intake pipes. As a result,
the air is in the expansion phase as it
enters the combustion chambers.
Since expansion always cools, the air/
fuel temperature is lower, ignition is
significantly improved, and—here’s the
best part—performance is increased.
Expansion Intake Manifold
More power using less fuel. Sounds
paradoxical, but it ’s really quite simple.
You just have to question the norm.
Take the intake manifold in the new
911 Turbo models, as an example. With
a traditional resonance manifold, more
air means more power. The compression
effect in the intake system is used to The amount of air that enters the engine
under expansion is less than it would
be under compression. To compensate
for this, Porsche engineers simply
increased the boost pressure. The
resulting increase in temperature—again
through compression—is immediately
offset by the uprated intercoolers.
Instead of hot compressed air entering
the combustion chambers, the cooler
air generates more power and torque.
As a consequence, there is a major
improvement in engine efficiency.
Fuel consumption is lower, even under
heav y loads and at high revs.
4 VarioCam Plus4
1 Vanes closed | 2 Vanes open | 3 Variable Turbine Geometry (VTG)

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3Personality | Comfor t
1 Roof Transport System |
2 Luggage compartment |
3 Graphical display of ParkAssist (front and rear)
HomeLink®
As standard, a HomeLink® system
integrated into the overhead console
lets you control entry gates, garage
doors, lighting systems, and home
securit y systems at the touch of a
but ton. The device allows you to
control up to three different systems.
Luggage Compartment
The luggage compartment volume in
the new 911 Turbo models is four cubic
feet. The luggage compartment is fully
trimmed in scratch-resistant materials.
Roof Transport System
An aluminum Roof Transport System
is available as an option for the
new 911 Turbo Coupe models. It
is aerodynamically efficient, very
light weight, and easy to fit. A range
of attachments is available, including
a roof box, a bike carrier, or a ski/
snowboard carrier. The maximum
roof load is 165 pounds .
Anti-Theft Protection
The new 911 Turbo models are equipped
as standard with an immobilizer with
in-key transponder and an alarm system
with radar-based interior surveillance.
The system secures the doors,
luggage compartment, passenger
compartment, and ignition lock.
Auto-Dimming Mirrors
An auto-dimming function is standard
for the interior and exterior mirrors.
Also included is an integrated rain
sensor for the front wiper system.
ParkAssist
Park Assist at the rear is standard on
the new 911 Turbo models. Featuring
four inconspicuous sensors in the rear
end, the system audibly alerts the driver
to the presence of obstacles detected
behind the vehicle. An intermit tent
warning tone increases in rapidity
as the obstacle is approached.
In the new 911 Turbo S and the new
911 Turbo S Cabriolet, Park Assist
is supplemented by four sensors at the front (available as an option
for the new 911 Turbo and the new
911 Turbo Cabriolet). The audible alert
is supplemented by a visual warning
in the central display screen, which
shows a graphical representation
of the vehicle from overhead.

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Personality | Comfor t
1 Adaptive Cruise Control radar sensor |
2 Adaptive Cruise Control display
Light Design Package
The optional light design package is both
practical and aesthetically appealing. It
comprises dimmable LEDs in the over-
head console and in the areas of the
rear seats, door openers, door storage
compartments, and front foot wells.
Porsche Entry & Drive
With the optional Porsche Entry & Drive,
you can leave your car key in your pocket.
As soon as you grab the door handle
or approach the luggage compartment,
the system automatically checks the
encrypted access code on the key. Once
the key is validated, the door and the
luggage compartment lid unlock. The
engine can then be started and switched
off using the electronic ignition switch. To lock the vehicle, you simply press
the but ton on the outside of the door
handle. Porsche Entry & Drive then locks
the vehicle and activates the engine
immobilizer and steering-column lock.
Glass Tilt/Slide Sunroof
For the 911 Turbo Coupe
models, a power-adjustable tilt /
slide sunroof is available in tinted
single-glazed safety glass.
An integral power sunblind provides
shade from unwanted bright light. The
design, headroom, and aperture of
the glass roof are identical to those
of the steel tilt /slide sunroof. The
only difference is that, even when
closed, the glass sunroof still gives
you that open-to-the-sky feeling.
Reversing Camera
The optional reversing camera (only in
conjunction with ParkAssist front and
rear) facilitates reverse parking and
maneuvering. Help is provided in the
form of a high-contrast color image
with dynamic guidelines on the PCM
screen, which shows the predicted
course of the vehicle based on the
current position of the steering wheel.
Cruise Control
For greater driver comfort on long
stretches of road, this automatic
speed control function is standard on
the 911 Turbo and Turbo S models.
Cruise control operates above 19 m p h

and is activated using a but ton on
the steering-column control stalk.
Adaptive Cruise Control Including
Po

rsche Active Safe (PAS)
Available as an option, this cruise
control function regulates your speed
according to the distance bet ween
your vehicle and the vehicle in front.
A radar sensor monitors the road
ahead at up to a distance of 656 feet.
If you have set a cruising speed but
have begun to gain on the vehicle in
front because it is driving more slowly,
this is detected by the radar sensor.
The system now reduces the speed
of your vehicle up to a maximum
rate of 11 f t . /s e c by restricting
the throt tle or gently applying the
brakes, until the distance that you
have preset is maintained. Your
vehicle will now continue at a reduced speed. If the other vehicle decelerates
further, Adaptive Cruise Control will
continue to reduce your cruising
speed— even down to a complete stop.
For additional safet y, if the system
detects that the distance from the
vehicle in front is decreasing, it will
also prepare your vehicle for braking
by precharging the braking system
so that the brake pads are already
in light contact with the brake discs.
However, drivers still have to perform
heavier braking themselves.
As soon as the road ahead clears again,
your vehicle will accelerate back up
to the cruising speed originally set.
If your vehicle approaches the vehicle
in front too quickly, Porsche Active
Safe (PAS) will issue audible and visual
warnings. In addition, the system briefly
jerks the brakes and if necessary
initiates target braking, with any braking
pressure applied by the driver being
increased within certain system limits.