2013 PORSCHE CAYENNE fuel pressure

The Cayenne | Cayenne Diesel · 18
17 · The Cayenne | Cayenne Diesel
1) Compared to previous model (Model Year 2010).2) For details on the test procedure, please refer to
p a ge 15 0.
The only thing running low on long journeys:
fuel consumption.
Cayenne Diesel.
Boasting outstanding performance and
efficiency, the Cayenne Diesel is ideal for
longer journeys – offering high levels of
torque, while fuel consumption remains
low.
Its 3.0 -litre V6 turbo - diesel engine is now
more powerful and refined, and approxi -
mately 20 kg lighter.
1) The unit generates
180 kW (245 hp) and maximum torque
of 550 Nm. The sprint to 100 km/ h
requires just 7.6 seconds. Top speed is
220 km/ h. Fuel consumption now comes
in at just 7.2 l/100 km in the combined
test cycle.
2)
Direct fuel injection comes courtesy
of a common-rail injection system.
The piezoelectric injectors enable mul -
tiple injections at a pressure of up to 2,000 bar, ensuring optimum distribution
of the air/fuel mixture – for improved
dynamics.
The turbocharger on the Cayenne Diesel
features Variable Turbine Geometry

(V TG, p. 42). Combined with optimised
channelling of the intake air, it enhances
the charging effect, thereby generating
a higher output and impressive torque,
even at low engine speeds.
The standard eight-speed Tiptronic S
includes gearshift controls on the steer -
ing wheel. Transmit ting the high torque
of the Cayenne Diesel smoothly and
effectively, the eight gears are designed
to facilitate both economical driving with
low fuel consumption and performance
driving with emphatic acceleration. Porsche Traction Management (PTM,
p. 47)
permanent all-wheel drive with
self- locking centre differential transmits
the car’s power to all four wheels with
optimum precision and control.
Available as a no - cost option, the
100 -litre fuel tank increases the range
to well over 1,000 km while keeping
the engine rpm and noise levels low.
The Cayenne Diesel: proof that
a 100 -metre sprinter can also run
a marathon.
For fuel consumption, CO
2 emissions and efficiency class data, please refer to pages 150/151.

25 · The Cayenne | Cayenne Turbo The Cayenne | Cayenne Turbo · 26
Reduced weight, lower fuel consumption, fewer emissions.
At Porsche, we believe less is more.

Cayenne Tu r b o.
Understatement coupled with clear state -
ments: lower fuel consumption, faster
acceleration.
1) Supreme engineering that
speaks for itself. In short, every thing
you’d expect from a Turbo.
Another clear statement is the distinctive
sound from the twin dual-tube tailpipes.
Produced by the 4.8-litre t win-turbo V8
engine that delivers 368 kW (500 hp) and
features direct fuel injection (DFI, p. 40).
The car has a top speed of 278 km/ h
and the benchmark sprint from 0 to
100 km/ h is completed in 4.7 seconds.
Maximum torque is 700 Nm. Here too,
fuel consumption has been reduced by
23 % and CO
2 emissions by 25 %.1)
Not least thanks to a weight saving of
185 k g.
1)
Optimum traction and safet y are pro -
vided by Porsche Traction Management
(PTM, p. 47) active all-wheel drive. Also
connecting the car to the road are the
19-inch Cayenne Turbo wheels – wheels
up to 21 inches in diameter are available
as an option. The chassis on the Cayenne
Turbo is equipped as standard with air
suspension featuring self-levelling and
ride-height control, as well as Porsche
Active Suspension Management (PASM,
p. 57). This electronic damping control
system offers continuous adjustment
of the damping forces on each wheel –
depending on current road conditions
and driving st yle. This enables greater
car control, improving safety and
comfor t. Comfort is also key in the Cayenne Turbo
interior. Standard equipment comprises
an interior package in smooth-finish
leather, a rooflining in Alcantara and an
electrically adjustable steering column.
Also fit ted as standard: the BOSE®
Surround Sound System, Porsche

Communication Management (PCM, p. 90)
with navigation module, adaptive sports
seats with comfort memory package
(18-way), Tyre Pressure Monitoring (TPM,
p. 58), automatic headlight activation
and automatically dimming exterior and
interior mirrors.
Exterior features exclusive to the
Cayenne Turbo include Bi-Xenon main
headlights with Porsche Dynamic Light System (PDLS, p. 63), larger air intakes
and a distinctive ‘power dome’ on

the bonnet – a clear reference to the
enormous potential within.
Following our long established principles,
the Cayenne Turbo blends phenomenal
performance with outstanding comfort
and efficiency. It does so in st yle, but
without ever compromising on any one
in particular. Because we believe that
less can also mean more.
For fuel consumption, CO
2 emissions and efficiency class data, please refer to pages 150/151.1) Compared to previous model.

Drive systems and chassis | Engine technology · 42
41 · Drive systems and chassis | Engine technology
Compression with precision.
Essential for getting right to the point.
Direct fuel injection (DFI).
DFI injects fuel directly into the combus -
tion chamber at up to 120 bar with milli -
second precision using electromagnetic
injectors. The injector position and spray
geometry have been carefully designed
to improve output, torque, fuel economy
and emissions. The swirling of the fuel as
it enters each chamber increases the
mixing of air and fuel, thereby enhancing
combustion. By forming the air/fuel mix -
ture directly in the combustion chamber,
DFI contributes to engine cooling. As a
result, it was possible to increase the
compression ratio and therefore power
and efficiency.
Direct fuel injection on the diesel
engine (common-rail injection system).
On the Cayenne Diesel, direct fuel injec -
tion comes courtesy of a common-rail
injection system. The injection pressure
is now up to 2,000 bar, ensuring optimum
distribution of the air/fuel mixture – for
greater performance. The piezoelectric
injectors provide flexible injection rate
adjustment, using exactly metered
quantities of fuel, with multiple injections
for each power stroke to deliver smooth
combustion.
Cooling systems.
A high-performance engine can only
maintain its maximum capability over
a long service life if all components are
operating consistently within a specific
temperature range. The engines in the
Cayenne models are therefore designed
for efficient cooling.
In order to reduce the frictional losses
that occur during warm-up, all Cayenne
models feature comprehensive thermal
management. Using intelligent control,
it activates the different cooling circuits
individually and on demand, thereby
ensuring that the optimum operating
temperature for the engine and trans -
mission is reached more quickly. This
minimises friction – and keeps fuel
consumption and CO
2 emissions low.
The V8 engines have an enhanced coolant
management system offering effective
temperature control throughout the engine.
While 20 % of coolant flows longitudinally
through the crankcase, the remaining 80 %
serves the cylinder heads using the proven
cross-flow principle (from hot to cold).
On all Cayenne models, the piston heads
are cooled using oil-spray jets integrated
within the main lubrication system.
The entire cooling system is designed for
prolonged heav y-dut y use, e.g. off-road
driving or heav y towing and carrying
applications.
Lubrication.
The V8 engines use dry-sump lubrication
to ensure a consistent supply of oil in
all load conditions, especially in off-road
terrain. The oil reservoir is located inside
the engine. This saves on space and
reduces weight.
Oil is circulated around the V8 engines
using a demand-driven pump. This has
been designed for the toughest driving
scenarios on and off road, including per -
formance driving and extreme gradients.
The V6 engines have a wet-sump lubrica -
tion system. Ensuring a reliable supply of
oil, whatever the driving conditions.
For fuel consumption, CO
2 emissions and efficiency class data, please refer to pages 150/151.

Drive systems and chassis | Engine technology · 44
43 · Drive systems and chassis | Engine technology
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 effect is further enhanced on the V6
engine in the Cayenne and the V8 engine
in the Cayenne S and the Cayenne GTS
by a t wo -stage intake manifold. This vari -
able 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.
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 twin intercooler 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 response, even at low revs
and road speeds. The supercharger has
a low-temperature water cooling system
for cooling the charge air.
Variable Turbine Geometry (VTG) 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 elec -
tronically 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
significant increase in boost pressure,
excellent cylinder charging plus greater
power and torque.
Electronic engine management.
Cultured performance in all driving
scenarios requires comprehensive
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 compared with
a corresponding set of reference values.
Based on this information, a range of
key engine functions, e.g. ignition and
injection timings as well as injection
quantities, are seamlessly and auto -
matically 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 max -
imum 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 catalysts are high efficiency,
faster warm-up and a long service life.
Sports exhaust system.
Available as an option on the Cayenne
and Cayenne S and included as standard
on the Cayenne GTS, the sports exhaust
system
1) provides an even more distinct -
ive sound. For the looks to match, it
comes with a specially designed set of
t win dual-tube tailpipes with a high-gloss
finish. On the Cayenne GTS, these are
finished in mat t black.
All exhaust systems, standard and
sports, comply with the EU 5 emissions
legislation.
1) For Cayenne only in conjunction with Tiptronic S. Single-tube tailpipes on the Cayenne, Cayenne Diesel,
Cayenne S and Cayenne S Hybrid
Dual-tube tailpipes on the Cayenne Turbo
Sports exhaust system (optional)
But ton for spor ts exhaust system
Spor ts exhaust system, with t win dual -tube tailpipes in mat t black on the Cayenne GTS For fuel consumption, CO2 emissions and efficiency class data, please refer to pages 150/151.

Drive systems and chassis | Transmission · 46
45 · Drive systems and chassis | Transmission
Precision control.
Whatever your choice of terrain.
Transmission.
Six-speed manual gearbox.
The six-speed manual gearbox on the
Cayenne has been specifically adapted
for the demands of high-performance
use. The gear lever throw is short and
precise, and each of the six ratios has
been selected for optimum progression
through the gears. As the centre console
rises to meet the dashboard, the gear
lever is close to hand – for an even more
engaging drive.
The standard upshift display in the
instrument cluster helps to reduce fuel
consumption further still. Eight-speed Tiptronic S is also available
as an option on the Cayenne in conjunc
-
tion with the auto start/stop function.
Standard on the Cayenne.
Eight-speed Tiptronic S.
The outstanding feature of the eight-
speed Tiptronic S is a particularly wide
ratio spread. 1st gear is designed for
optimum acceleration when pulling away
and greater performance when tackling
ascents and towing loads in off-road
terrain. Top speed is reached in 6th gear
(in 7th gear on the Cayenne Diesel). The
remaining upper gears are used to lower
the revs at high speed, thereby enhanc -
ing fuel economy and occupant comfort. On the motorway in particular, driving

at low revs will significantly reduce the
noise level inside the vehicle.
In automatic mode, the driver can influ -
ence gearshifts on the Tiptronic S using
the throt tle and brakes alone. Tiptronic S
automatically adapts the gearshift points
for performance driving – equally, if a
more defensive driving st yle is detected,
the system selects a gearshift point that
offers maximum fuel economy. Under
heav y braking, Tiptronic S shifts down to
maximise engine braking.
An electric pump is used to maintain the
required pressure of the transmission fluid,
e.g. to transmit high levels of torque
at
lower engine speeds. The standard sports steering wheel in
conjunction with Tiptronic S has two
ergonomic switches for manual gear
changes. One press forward with the
thumb and Tiptronic S shifts up. One

pull backwards with the index finger and
Tiptronic S shifts down. Either the right
or left-hand switch can be used. The
result: an even more dynamic response
when changing gear.
Standard on the Cayenne Diesel,
Cayenne S, Cayenne S Hybrid,

Cayenne GTS and Cayenne Turbo.
Optional for the Cayenne.
Tiptronic S gear selector
For fuel consumption, CO2 emissions and efficiency class data, please refer to pages
15 0/ 151.

Drive systems and chassis | Chassis · 60
59 · Drive systems and chassis | Chassis
More than just a small cog in the system.
Wheels.
The wheels for the Cayenne models
perfectly underline the character of the
car – and convey it to the road.
Standard on the Cayenne and Cayenne
Diesel: the 18-inch Cayenne wheel.
Standard on the Cayenne S and Cayenne S
Hybrid: the 18-inch Cayenne S III wheel.
Standard on the Cayenne GTS: the 20 -inch
RS Spyder Design wheel. Standard on
the Cayen
ne Turbo: the 19-inch Cayenne
Tu r b o w h e e l .
1)
A range of other wheel options in various
sizes (up to 21 inches in diameter) is
available for all models.
Ty r e s .
All t yres have been optimised with regard
to driving performance, handling, rolling
resistance and weight. They also provide
great potential for reducing fuel consump-
tion and emissions. The three basic com -
ponents of the t yre have been enhanced –
the rubber compound, tread design and
the architecture of the substructure. This
reduces rolling resistance and fuel con -
sumption.
Tyre Pressure Monitoring (TPM).
Tyre Pressure Monitoring (TPM) provides
early warning of any drop in pressure
via the on-board computer display. In
addition, the driver can quickly and easily
check the individual pressures in all four
wheels via the multi-purpose display in
the instrument cluster.
Standard on the Cayenne Turbo.
Optional for all other Cayenne models.
1) For details of all wheel options, see pages 130/131.2) In conjunction with 275 - mm t yres for the Cayenne Turbo and 265 - mm t yres for all other models. 19- inch Cayenne Turbo wheel
20 - inch RS Spyder Design wheel 20 - inch Cayenne Spor tDesign II wheel
19 - inch Cayenne Design II wheel
2)
21-inch Cayenne SportEdition wheel 21-inch Cayenne SportEdition wheel painted black
(high-gloss)
21- inch 911 Turbo II wheel (forged)
18 - inch Cayenne S III wheel
18-inch Cayenne wheelFor fuel consumption, CO2 emissions and efficiency class data, please refer to pages 150/151.

Safety and environment | Safet y · 68
67 · Safety and environment | Safet y
Recuperation.
The electronic engine management sys -
tem on the Cayenne S Hybrid controls
the braking process so that, when
the brake pedal is actuated, as much
expended energy as possible can be

harnessed by the electric machine in gen-
erator mode and stored in the 288-volt
nickel metal hydride (NiMH) bat tery. This
is referred to as recuperation. To do this,
the engine management system adjusts
the generator current depending on the
brake pedal position, recovers part of
the kinetic energy and stores it in the
bat tery. When the pressure on the brake
pedal exceeds a certain threshold, the
brakes are applied.
Porsche Ceramic Composite Brake
(PCCB).

Available as an option on all Cayenne
models, the Porsche Ceramic Composite
Brake (PCCB) has already proven its
abilit y to cope with the harshest require -
ments of the racetrack. It is available in
conjunction with 20-inch wheels or larger
for the Cayenne Turbo and with 19-inch
wheels or larger for all other Cayenne
models.
The discs are made from a specially
treated carbon-fibre compound that is
silicated in a high-vacuum process at
approximately 1,700 °C. The resulting
material is not only much harder than
cast iron, it is also more resistant to
heat.
Even at high temperatures, the thermal
resistance of the PCCB disc ensures
outstanding dimensional stability. The
ceramic material is totally resistant to
corrosion and offers excellent acoustic
damping properties.
PCCB enables shorter braking distances
– no mat ter how tough the driving
conditions. The pedal response is fast
and precise with only moderate input
required. Excellent fade resistance
ensures greater balance when slowing
from high speed.
The key advantage of PCCB is a total
weight saving of approximately 50
%
compared with equivalent cast-iron discs.
As well as enhancing performance and fuel economy, the unsprung and rotating
masses are lightened. The results:
greater comfort and road-holding on
uneven road surfaces plus better
handling and agility.
Optional for all Cayenne models.
Porsche Ceramic Composite Brake (PCCB)For fuel consumption, CO2 emissions and efficiency class data, please refer to pages 150/151.

Comfort and transport | Comfor t · 82
81 · Comfort and transport | Comfor t Cayenne Turbo with t wo -tone leather interior in Umber/Cream and walnut interior package (wood)Cayenne GTS with leather interior in Black and GTS interior package in Carmine Red
As on every Porsche, the interior of the
Cayenne is designed around the driver,
combining sporting st yle with the very
highest standards of ergonomics, com
-
fort and quality.
Particularly striking features include the
way the centre console rises to meet
the dashboard – clearly inspired by the
Carrera GT. This immediately enhances
the interior structure, a continuation of
the car’s dynamic exterior lines. The seat
position and sports steering wheel offer
exceptional support and contact – for an
even sportier ride.
Our benchmark for exceptional driver comfort?
An out-and-out sports car.
Comfort.
A t ypical Porsche feature: the five round
instruments form the familiar cluster and
are slightly raised from the dashboard as
a visual unit. The high-resolution 4.8-inch
TFT colour screen displays information
from the on-board computer or, in con -
junction with PCM including navigation
module, map data from the navigation
system. It also shows the set tings of the
optional adaptive cruise control (p. 110)
or gives various warnings, such as alerts
from Tyre Pressure Monitoring (TPM,
p. 58), which is also available as an option.
On the Cayenne S Hybrid, the display also
provides information about the energy
management. Oil pressure, oil and coolant temperature
as well as the fuel level are displayed
using analogue gauges, while the boost
pressure gauge on the Cayenne Turbo is
digital. A compass display in the instrument
cluster is available as an
option in conjunc-
tion with PCM. This shows the four cardinal
and four ordinal directions with degree
increments as well as your current altitude.
The steering column offers manual height
and reach adjustment (electrically adjust -
able on the Cayenne Turbo). The steering
wheel rim is in smooth-finish leather. As is the optional SportDesign steering
wheel with gearshift paddles (standard on
the Cayenne GTS) – for genuine race-
st yle gearshift action. Also available as
an option, the multifunction steering
wheel enables easy access to a range of
functions including audio and telephone.