2013 PORSCHE CAYENNE cooling

Drive systems and chassis | Drive systems · 32
31 · Drive systems and chassis | Drive systems
E-power button.
The ‘e-power’ but ton can be used to
expand the range in which the vehicle

can be run solely on electric power, when
heading out of a residential area, for
instance. The throt tle map is adapted so
that the combustion engine is engaged
later than in ‘Normal’ mode depending
on performance requirements. This is
activated via a but ton on the centre

console.

B at ter y.
The hybrid system features a high-
voltage nickel metal hydride (NiMH) bat-
tery consisting of 240 cells. It provides
the electric machine with the energy required for the vehicle to drive short

distances solely on electric power.
The compact bat tery is located under the
loadspace floor in the luggage compart -
ment. Weighing approximately 80 kg,
its dimensions are 426 mm x 925 mm x
286 mm.
The bat tery is designed to last without
the need for any maintenance throughout
its entire life. As the electric machine
also functions as a generator, it can
charge the bat tery under certain condi -
tions when the combustion engine is in
part-throt tle mode and through energy
recovery during braking. A special bat tery management and cooling system main
-
tains a constant temperature and
protects the battery from overheating.
It also monitors the charge/discharge
processes. As a result, the life of the
bat tery is optimised and its suitabilit y
for everyday use ensured, while offering
a high capacit y: 1.7 kWh.
Systems that are usually dependent on
the output provided by the combustion
engine, such as climate control, power
steering and brake assist, run solely
on electricit y on the Cayenne S Hybrid.
As they do not rely on output from the
engine, these functions remain active
when the car is running in electric mode or when it is ‘coasting’ or gliding along
with the engine turned off.
In summary: despite its six- cylinder
powerplant, the Cayenne S Hybrid offers
performance levels that are comparable
with an eight-cylinder unit – but with
significantly lower fuel consumption. Also
when it comes to hybrid drives, we’ve
taken a completely new path. Hardly
surprising really, with a technology this
convincing.

Cayenne S Hybrid system (combined)
Cayenne S Hybrid combustion engine
Cayenne S Hybrid electric machine
Energy management display in PCM: electric modeFor fuel consumption, CO2 emissions and efficiency class data, please refer to pages 150/151.
Cayenne S Hybrid: 580 Nm at 1,000 rpm, 279 kW (380 hp) at 5,500 rpm
100
50
0
300 350 400 450 500 550 600 650
0
30 60 90
120
150 180 210 240 270 300 330
150 200
250
Power (kW)
T orque (Nm)
1500
7500
2000 25003000 3500400045005000 5500600065007000
1000
Engine speed (rpm)
360 390 420
700580 Nm
279 kW (380 hp)

Drive systems and chassis | Drive systems · 38
37 · Drive systems and chassis | Drive systems
The engine of the Cayenne Turbo.
The Cayenne Turbo is powered by a
4.8-litre t win-turbo V8 engine featuring
direct fuel injection (DFI, p. 40),

VarioCam Plus (p. 39) and charge-air
cooling. It generates 368 kW (500 hp)
at 6,000 rpm. Maximum torque of
700 Nm is available bet ween 2,250 and
Cayenne Turbo engine
4,500 rpm. Maximum speed is 278 km/ h,
while the sprint from 0 to 100 km/ h
takes as lit tle as 4.7 seconds. By
introducing a range of measures, e.g.
standard fitment of the eight-speed
Tiptronic S, we have been able to make
the car 23 % more fuel efficient.
1)
Cayenne Turbo: 700 Nm bet ween 2,250 and 4,500 rpm, 368 kW (500 hp) at 6,000 rpm
For fuel consumption, CO2 emissions and efficiency class data, please refer to pages 150/151.1) Compared to previous model.
100
300 350 400
450
500 550 600 6500
30 60 90
120
150 180 210 240 270 300
3301500
7500
2000 25003000 3500400045005000 5500600065007000 150 200
2501000
Power (kW)
T orque (Nm)
Engine speed (rpm)
360
700
390
750800
420
700 Nm368 kW (500 hp)

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.

155 · IndexIndex · 155
Index
Drive systems 28
‘Coasting’ 21
Electric machine 28
Hybrid module 28
Parallel full hybrid 28
Performance 31–36
Engine technology 38
Air intake system 42
Auto start/stop function 38
Common-rail injection system 40
Cooling systems 40
Direct fuel injection (DFI) 40
Engine management (electronic) 42
E-power button 30
Exhaust system 43
High-voltage battery 30
Lubrication 41
Sports exhaust system 43
Supercharging system 42
Turbocharging systems 42
Variable Turbine Geometry (VTG) 42
Variable valve timing 39
VarioCam Plus 39
Transmission 44
All-wheel drive 47
Anti-slip regulation (ASR) 47
Automatic brake differential (ABD) 47
Downhill assistance 48
Manual gearbox 44
Porsche Traction Management (PTM) 47
Tiptronic S 44
Off-road capability 50
Chassis 52
Air suspension 54
Front axle 53
Porsche Active Suspension
Management (PASM) 57
Porsche Dynamic Chassis Control
(PDCC) 55
Porsche Torque Vectoring Plus
(PT V Plus) 56
Power steering Plus 53
Rear axle 53
Self-levelling 54
Steel-spring suspension 54
Steering 53
Tyre Pressure Monitoring (TPM) 58
Ty r e s 5 8
Weight reduction 53
Wheels 58
Safety 62
Active safet y 62
Airbags 70
Anti-lock braking (ABS) 68
Automatic headlight activation 62
Automatic hold function 65
Bodyshell 71
Braking systems 65
Ceramic brakes 66
Cornering lights 63
Day time running lights 63
Headlights 63
Interior safety features 70, 71
ISOFIX 71
Lighting 62
Parking brake (electric) 65
Passive Safet y 70
Porsche Active Safe (PAS) 110
Porsche Ceramic Composite Brake
(PCCB) 66
Porsche Dynamic Light System
(PDLS) 63
Porsche Dynamic Light System Plus
(PDLS Plus) 63
Porsche Side Impact Protection
(POSIP) 70
Porsche Stabilit y Management (PSM) 68
Recuperation 66
Seat belt system 70
Taillights 63
Environment 72
Exhaust emissions 74
Fuel economy 75
Fuel system 75
Lightweight construction 72
Materials 77
Noise 77
Recycling 77
Ser vicing 77
Comfort 80
Adaptive sports seats 84
Anti-theft protection 102
Audio systems 90
Bluetooth
® 92, 93
BOSE
® Surround Sound System 98
Burmester
® High-End Surround
Sound System 96
CD/ DVD autochanger 90
CDR/CDR Plus audio system 90
Child seats 87
Climate control 100
Comfort memory package 84
Comfort seats 84
Compass display 80
Digital radio 95
Driver memory package 84
Electronic logbook 95
GTS sports seats 84
Heat and noise-insulating glass 100
Heated windscreen 100
Interior 80
Interior lighting 88
Mobile phone preparation 93
MP3 90, 91, 93
Multifunction steering wheel 80Navigation system
90
On-board computer 80
Online services 94
Panoramic roof system 104
Porsche Communication
Management (PCM) 90
Porsche Entry & Drive 102
Porsche Rear Seat Entertainment 88
Porsche Vehicle Tracking System
( P V T S) 10 2
Privacy glass 100
Radio 90
Rain sensor 102
Rear seats 87
Seat ventilation 85
Seat/steering wheel heating 85
Seats 84
Sport Chrono Package 95
Storage compartments 88
S u n r o o f 10 4
S u n s c r e e n 10 2
Telephone module 92
Touchscreen display 90
T V tuner 88, 92
Universal audio interface 93
USB port 90, 93
Voice control 93
Driver assistance systems 106
Adaptive cruise control with PAS 110
Automatic headlight activation 62
Automatically dimming mirrors 106
Comfort lighting package 100
Cruise control 106
Lane Change Assist (LCA) 109
Lane Departure Warning (LDW) 108
P a r k A s s i s t 10 6
Reversing camera 106
Speed limit indicator 111
Tr a n s p o r t 112
Loading Level 113
Loading options 112
Loadspace management system 117
Luggage compartment 112
Roof rails 115
Roof transport system 115
Tailgate (automatic) 113
Towbar systems 117
Personalisation 118
C o l o u rs 120
Exterior 120
I n t e r i o r 122–127
Porsche Exclusive 140
Factory collection 141
Panorama 142
Technical data 146