2011 PORSCHE CAYENNE air filter

response, even at low revs and
road speeds. This is particularly
useful when driving in urban
traf fic. The supercharger has a
low-temperature water cooling
system for cooling the charge air.
Variable Turbine Geometry in
the Cayenne Diesel.
The turbocharger in the
Cayenne Diesel features Variable
Turbine Geometry (V TG). The
gas-flow from the engine is
channelled onto the turbines via
electronically adjustable guide
vanes. By changing the vane
angle, the system can replicate
the geometry in all t ypes of
turbo, large or small , and thus
achieve the optimum gas-flow characteristics. As a result, even
at low engine rpm, the turbine
speed is maximised. For a sig-
nificant increase in boost pres-
sure, excellent cylinder charging
plus greater power and torque.
Electronic engine management.
Cultured performance in all
driving scenarios requires com-
prehensive engine control. The
electronic engine management
system does this by continually
monitoring the relevant input data
from a variet y of sophisticated
sensors. This data is then com-
pared with a corresponding set of
reference values. Based on this
information, a range of key engine
functions, e.g. ignition and in-
jection timings as well as injection
quantities, are seamlessly and
automatically adjusted. Other
major functions include on -board
recuperation. It ensures that the
on -board power supply is only
replenished while the vehicle is
on the overrun. This boosts fuel
economy as well as performance,
and ensures maximum engine
output during acceleration. All
this goes unnoticed by the driver,
apart from the obvious benefits:
lower fuel consumption and CO
2
emissions plus greater power and
torque at all times.
Exhaust system.
The light weight exhaust systems
in the Cayenne models are made
from special, long-life stainless
steel. The key features of the cata-
lysts are high ef ficiency, faster
warm -up and a long service life.
Sports exhaust system.
Available as an option on the
Cayenne and Cayenne S, the
sports exhaust system
1) provides
an even more distinctive sound.
For the looks to match, it comes
with a specially designed set
of t win dual-tube tailpipes with
a high-gloss finish.
All exhaust systems, standard and
sports, comply with the stringent
EU5 emissions legislation.
2)
Turbocharging system in the
Cayenne Turbo.
In the Cayenne Turbo, the engine
is assisted by t win turbocharger
units arranged in parallel –
one for each bank of cylinders.
Incoming air is passed through
a filter and compressed by the
turbine units. Its temperature is
then reduced in the t win inter-
cooler system, which improves
cylinder charging and limits
thermal loads on the engine.
Supercharging system in the
Cayenne S Hybrid.
The engine in the Cayenne S
Hybrid is equipped with a
supercharger. For a more direct
Air intake system.
The Cayenne models are all
equipped with a resonance air
intake system. This technology
uses the pressure waves
generated by the inlet valves
to ‘force’ air into the engine.
The ef fect is enhanced in the
Cayenne and Cayenne S by a
t wo -stage intake manifold. This
variable geometry combines
all the benefits of a long intake
tube (higher torque at low rpm)
with those of a shorter length
(more power at higher rpm).
The result: highly impressive
torque ratings across the entire
engine speed range.
1 ) For Cayenne only in conjunction with Tiptronic S.2) The data presented here was recorded using the Euro 5 test procedure (715/2007/ EC and 692/2008/ EC) and the NEDC (New European Driving Cycle). The respective figures were not recorded on individual vehicles and do not constitute part of the of fer. This data is provided solely for the purposes of comparison bet ween the respective models. For more information on individual models, please contact your Porsche Centre.
Tailpipes on the Cayenne, Cayenne Diesel, Cayenne S and Cayenne S Hybrid
Tailpipes on the Cayenne Turbo
Drive systems and chassis | Engine technology · 41
Spor ts exhaust system (optional)

Thanks to single-spark coils on
each of the cylinders, the entire
ignition system on the petrol-
engined models, with the
exception of the spark plugs,
is maintenance -free.
These modest service require-
ments mean less waste disposal
and fewer demands on natural
resources. They also lower the
cost of ownership while keeping
your car on the road.The Cayenne S Hybrid doesn’t
require any additional servicing.
Service intervals for the Cayenne
models are dependent on a range
of factors, including local fuel
qualit y. For full details of service
intervals in your country, please
consult the relevant price list
or contact your Porsche Centre.
Materials and recycling.
Owning a Porsche should be a
lasting pleasure with minimal
impact on the environment. This
Porsche principle can be summed
up in one word: sustainabilit y.
The light weight exhaust on the
Cayenne models, for example,
is constructed from long-life
stainless steel.
Every Porsche model is entirely
free of asbestos, CFCs and
components manufactured using
CFCs. All legal requirements in
respect of recycling are fulfilled.
Materials are clearly labelled for subsequent identification and
sorting to facilitate ef ficient
recycling.
While more than 95 % of the car
can be recycled using current
technologies, the chances are
your Cayenne may never need
recycling at all. After all, t wo
thirds of all the cars we have ever
made are still on the road today.
For more information on
environmental issues, please
visit w w w.porsche.com.
Servicing.
With lengthy service intervals
and long-life components, vehicle
maintenance is kept to a min-
imum. In the case of the oil filter,
for example, all that ’s replaced
is an easily recyclable paper
element. The oil filter casing
remains on the car.
All moving parts inside the engine
are fully self-adjusting. The valve
clearances, for instance, feature
automatic hydraulic control.
Noise.
As paradoxical as it may seem,
the distinctive Porsche sound is
also created by what you don’t
hear – the absence of unwanted
noise. Naturally, its main origin is
deep within the engine. But that ’s
not all. Our holistic approach
to vehicle design also extends
to the acoustics. Which is why
we’ve optimised them for the
entire car.
To minimise ‘play’ bet ween com-
ponents, we’ve used stronger,
lighter and more temperature-
resistant materials. This reduces
mechanical noise. Large-volume
silencers and air intake manifolds
also help to eliminate noise –
throughout the life of the car.
Tyre noise has been drastically
reduced in collaboration with
our of ficial t yre partners. Wind
noise levels have also been
lowered thanks to aerodynamic
refinements.
All that remains is a sound that is
pure Porsche.
74 · Safety and environment | Environment

option for all Cayenne models
with CDR-31 and PCM.
The technologies behind the
system meet the same exacting
standards as those in the com-
pany’s high - end home audio
products. State-of-the-art and
featured like this in a Porsche for the first time. The extravagance
is uncompromising, the crafts-
manship excellent, the sound
phenomenal. The system owes
its eminence to countless
details, and one overriding goal:
perfection in sound.
In figures: 16 - channel amplifier
with a total output of more than
1,000 wat ts, 16 loudspeakers
(including active subwoofer with
300 -wat t Class D amplifier), a
total diaphragm area of more than
2,400 cm
2, and a frequency range
of 30 Hz to 20 kHz. Crossover technology has been
carried over virtually unmodified
from the company’s high - end
home audio systems. Analogue
and digital filters have been
optimally defined for their new
location and finely tuned af ter
extensive in-car audio testing.
The t weeters are ribbon -based
air motion transformers (AMT)
of fering unmistakably fine, clear
and undistorted high -frequency
sound reproduction with excellent
level stabilit y.
qualities. Once you’ve heard it
for yourself, you’ll know we are
not exaggerating. Based in
Berlin, Burmester® is one of the
most respected premium audio
manufacturers worldwide. The
Burmester
® High - End Surround
Sound System is available as an
Burmester® High-End
Surround Sound System.
The Cayenne models are
marked by exceptional versatilit y.
With the optional High-End
Surround Sound System from
Burmester
® it could even be
said that they of fer concert-hall
This is one standing ovation you’ll have to give sitting down.
Furthermore, the elegant, purist
design with galvanised surrounds
and Burmester
® logos on select-
ed loudspeakers makes it clear
that the appeal of the Burmester
®
High - End Surround Sound System
is as much about the visual as it is
the audio.
Optional for all Cayenne
models.
Burmester® loudspeaker
94 · Comfort and transport | Comfor t Comfort and transport | Comfor t · 95
Optimised sound distribution in the Cayenne (schematic representation)

for the rear cabin area, with sep-
arate temperature controls for lef t
and right. The rear climate control
set tings can also be adjusted
from the front seats.Optional for the Cayenne,
Cayenne Diesel, Cayenne S
and Cayenne Turbo.
Water-repellent side windows.
The front side windows on the
Cayenne models have a water-
repellent finish that automatically
disperses moisture and dirt.
The result: optimum visibilit y,
even in poor weather conditions.
(Note: surface finish may require
occasional renewal.)
Privacy glass.
Available as an option, dark-tinted
glass provides privacy for the
rear seat and luggage area.Optional for all Cayenne
models.
Heated windscreen.
For added comfort and practi-
calit y, the heated windscreen
ensures optimum visibilit y on
cold days.Optional for all Cayenne
models.
Heat and noise-insulating glass.
All Cayenne models are equipped
as standard with heat-insulating
tinted glass featuring a grey top
tint on the windscreen. As an
optional alternative, heat and
noise-insulating laminated glass
of fers additional protection
against infrared radiation. Enjoy
peace and quiet, and an even
more pleasant climate, in the
passenger compartment.
The heat and noise-insulating
glass option also includes privacy
glass at the rear.Optional for all Cayenne
models.
sensor. Other features include
an active carbon filter,
which
excludes dust, pollen and external
odours.
Four-zone climate control.
Four-zone climate control pro -
vides independent air conditioning
Climate control.
All Cayenne models are equipped
with climate control as standard.
This system provides independent
control of the temperature and air
flow volume for driver and front
passenger as well as an auto -
matic air recirculation function
with an air qualit y and
humidity
As a child, you went out whatever the weather.
Nothing has changed.
Cayenne S Hybrid with privacy glass
Four-zone climate control for rear seat area
Comfort and transport | Comfort
· 97
96 · Comfort and transport | Comfor t