2013 PORSCHE CAYENNE oil temperature

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.

Safety and environment | Environment · 78
77 · Safety and environment | Environment
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’ between components,
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 official t yre
partners. Wind noise levels have also
been lowered thanks to aerodynamic
refinements. All that remains is a sound that is pure
Porsche.
Servicing.
With lengthy service intervals and long-
life components, vehicle maintenance is
kept to a minimum. 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.
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 requirements
mean less waste disposal and fewer demands on natural resources. They

also lower the cost of ownership while
keeping your car on the road.
Service intervals for the Cayenne models
are dependent on a range of factors,
including local fuel quality. 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: sustain -
abilit y. The light weight exhaust on the
Cayenne models, for example, is con -
structed from long-life stainless steel.
Every Porsche model is entirely free of
CFCs and components manufactured
using CFCs. All legal requirements in
respect of recoverability are fulfilled.
Materials are clearly labelled for
subsequent identification and sorting

to facilitate efficient 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 www.porsche.com

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.