2006 PORSCHE CAYMAN air condition

The new Cayman and the Cayman S |Drive
· 34 ·
1. Oil scavenge pump (obscured)
2. Individual ignition coil
3. Camshaft adjuster (valve timing)
4. Control valve for camshaft adjuster
5. Control valve for variable valve lift
6. Inlet camshaft
7. Switchable tappet with hydraulic valve
clearance adjustment
8. Inlet valve
9. Valve spring
10. Exhaust valve
11. Lokasil-coated bore
12. Forged aluminium piston
13. Forged connecting rod
14. Crankshaft bearing bridge
15. Crankshaft
16. Water jacket
17. Combustion chamber
18. Electronically controlled throttle valve
19. Resonance intake manifold
20. Twin-flow intake pipe
21. Twin-flow intake valve
22. Resonance valve
23. Air-conditioning compressor pulley
24. Power-steering pump pulley
25. Ancillary drive belt
26. Water pump pulley
27. Oil feed pump (obscured)
28. Tandem pump
1
2
3
5
4
6
78
15
16
17
18
19
20
21
22
23
24
25
26
2728
14
9
1011
12
13
· 35 · · 34 · 3.4-litre six-cylinder boxer engine (Cayman S)

· 37 · · 36 ·The new Cayman and the Cayman S |
Drive
Integrated dry-sump
lubrication.
This proprietary Porsche
technology ensures consistent
lubrication in even the most
extreme high-speed corners.
Oil is extracted from each of the
cylinder heads by a dedicated
scavenge pump. The oil return
system features narrow-section
lines which de-foam the oil before
it is collected in the integral sump.
A third pump then feeds the oil
back to the lubrication points and
the cycle begins once more. A
stable oil pressure is maintained
throughout the engine, even
during racetrack use.
Oil-level indicator.
Both Cayman models have an
electronic oil-level indicator as
part of the on-board computer
system. The reading is so precise
that a conventional dipstick is not
required.
Engine cooling.
Both flat-six engines have a
cross-flow cooling system with
all coolant channels cast in the
block. With no external hoses
or pipework involved, the system
is much more secure than
conventional designs.
Coolant is supplied separately
to each individual cylinder, so
it never arrives pre-warmed. As
well as maintaining a consistent
engine temperature, this means
the valves are much less
susceptible to wear. Important
benefits include greater engine
reliability, less risk of knocking,
better fuel economy, lower
emissions and reduced mechanical
noise.
Engine management system
with electronic throttle.
The Motronic ME7.8 engine
management system is the
primary source of control for
all engine-related systems and
processes, e.g., ignition and
fuel supply. It is an essential
prerequisite for enhanced
performance in all operating
conditions. The electronic throttle
is not only more precise, it can
modulate the volume of incoming
air to compensate for sudden load
transfer (e.g., when lifting off the
throttle before braking). Electronic
engine management ensures
better power delivery from a
standing start and a smoother rev-
limiter action. It also coordinates
the various sub-systems within the
Used to regulate /control
Engine management system
(Motronic ME7.8)
Engine load
Throttle-pedal position
Oxygen sensor signals
Engine speed (from crankshaft)
Inlet camshaft phase angle
Knock sensor signals
Vehicle speed
Air-conditioning settings
Engine immobiliser status
Ambient pressure
Sport Chrono button
Temperatures
– coolant
– intake air
– engine oil
– air in engine compartment
Ignition
Fuel injection
Idling via throttle
and ignition
Heating elements in oxygen sensors
Fuel-tank venting
CAN interface to instrument cluster,
transmission control unit, stability control system, etc.Moment interface to
Porsche Stability Management (PSM)
Input data
Twin-flow valve in intake manifold
Resonance valve in intake manifold
Inlet camshaft phase angle
Inlet valve lift
Secondary air injection
Engine fan
Starter
Diagnostics
Air-conditioning compressor
standard Porsche Stability
Management (PSM), e.g., anti-slip
regulation (ASR) and the automatic
brake differential (ABD). Other
important functions include
coordination and control of the
optional Tiptronic S transmission,
the oxygen sensors in the exhaust,
variable valve timing (VarioCam
Plus) and cylinder-specific knock
control.
Cayman S

· 41 · · 40 ·The new Cayman and the Cayman S |
Drive
Ignition system.
The ignition system in the Cayman
and Cayman S features static
high-voltage technology. Separate
coils on each of the plugs ensure
perfect ignition every time. With
no central coil, there is no need
for leads, which are a frequent
source of faults. All six coils are
directly controlled by the engine
management system. This
Cylinder-specific knock control.
Since temperatures tend to
vary across the engine, each
cylinder is monitored separately
for unwanted pre-ignition of the
air/fuel mix. If a risk is detected
in one or more cylinders, the
timing is adjusted on the
corresponding spark plug.
The system is effective under
all engine conditions, including
extremely heavy loads at low
rpm.
Exhaust system.
Both Cayman models have a
specially designed stainless steel
exhaust system. Gas is passed
from each bank of cylinders
through twin cross-linked silencer
units and exits the car through
a central tailpipe. A system of
four oxygen sensors – one before
and one after each of the two
pre-catalytic converters – provides
separate monitoring of the gas
composition and catalyst
performance for each cylinder
bank.
arrangement means they can
also be integrated with other
electronic-based systems. If the
optional Tiptronic S, for example,
requests smoother downshifts,
the system responds within a
fraction of a second and adjusts
the ignition timing.
Since a twin-tract layout allows a
higher rate of throughput than a
conventional exhaust, the system
also has a positive impact on
overall power and torque. It also
contributes to the distinctive
engine sound – on starting, at
idle and across the entire engine
speed range.
For even more powerful acoustics,
both cars can be equipped with
an optional sports exhaust system.
Servicing.
Regular servicing is extremely
important on any high-precision
machine. In the case of a
Porsche, it is equally important
to give you maximum enjoyment
from your car. We therefore aim
to reduce servicing requirements
and extend all service intervals.
The generator, power-steering
pump and air-conditioning
compressor are all driven by a
single, self-adjusting belt. Under
normal usage, the drive chains
for the cam and auxiliary shafts
are entirely maintenance-free.
The ignition system is also
maintenance-free, with the sole
exception of the spark plugs
(60,000 miles). The engine oil
interval is 20,000 miles, while
hydraulic tappets provide
automatic clearance adjustment
on each of the 24 valves.
In short: when we design a car
for the road, that’s where we
intend it to stay.Exhaust system
Dual-tube tailpipe (Cayman S) Single-tube tailpipe (Cayman)Cayman

· 54 ·The new Cayman and the Cayman S |
Chassis
a more natural and involving
response to lateral and longitudinal
forces. Cornering agility is
considerably enhanced, with
greater scope for oversteer on
turn-in and exit. This additional
manoeuvrability is particularly
apparent in lower-speed sequences
and bends.
For maximum dexterity, PSM can
be set to standby while the car is
still in ‘Sport’ mode. PSM simply
monitors the forces acting on the
car and will only intervene in the
most critical scenarios, e.g., when
ABS assistance is required on both
front brakes.
To help you quantify this increase
in performance, the Sport Chrono
Package includes a compact timer
with swivel display which is
centrally located on the dashboard.
Functions are accessed via the
control stalk for the on-board
computer. Analogue dials measure
hours, minutes and seconds, while
a separate digital field displays
whole seconds, tenths and one
hundredths of a second. The digital
field runs in parallel with a second
digital display which is conveniently
located in the instrument cluster.
Sport Chrono Package Plus.
This enhanced Sport Chrono option
is available in conjunction with the
optional Porsche Communication
Management (PCM – see page 86).
It offers all the same functions as
the Sport Chrono Package as well
as some additional information
options and features.
‘Sport’ button on centre console
Lap or journey times can be
viewed, stored and analysed using
a special performance display in
PCM. The information available
includes time elapsed and
distance travelled on the current
lap, as well as the number of laps
completed and their respective
times. You can also view the
current fastest lap as well as the
remaining range till empty. Driving
times can be recorded for any
stretch of road, and benchmark
times defined. Other useful features
include a personal memory
function which is also controlled
via PCM. This can be used to store
personal preferences for a range
of systems, including daytime
running lights, ‘Welcome Home’
lighting, optional automatic air
conditioning and door-lock
settings.
· 55 ·
Sport Chrono Package.
Both Cayman models, like every
Porsche, have lots of performance
in reserve.
To help you explore even more
of that potential, there’s the
optional Sport Chrono Package.
This unique range of functions
provides simultaneous enhancement
of the engine and chassis for even
greater driving pleasure.
When you activate the package
using the ‘Sport’ button in the
Throttle response
in ‘Sport’ mode
Throttle
response in
‘Normal’ mode
Both sets of characteristics
are dependent on engine
speed.
Pedal travel (%)
(%) Torque
(as percentage of maximum)
Comparison of throttle maps in ‘Normal’ and ‘Sport’ mode
centre console, the throttle
becomes more responsive, the
rev limiter becomes harder, and
the engine dynamics become
more like those of a racing car.
While this is happening, the
optional sports exhaust system
(see page 41) and optional PASM
are also switching to ‘Sport’ mode.
The baseline damper rating is
now considerably firmer, enabling
faster turn-in as well as better
road-holding and traction.On vehicles equipped with
optional Tiptronic S, the automatic
gearshift is noticeably more
dynamic. Upshifts and downshifts
are performed at higher revs with
a faster gearshift action. When
you lift off the throttle to slow the
car, engine braking is applied
sooner. There are no unwanted
upshifts in manual mode when
approaching the engine speed limit.
To minimise assistance from
Porsche Stability Management
(PSM – see page 64), its trigger
threshold is raised. The result is
Sport Chrono timer

· 63 · · 62 ·
lighter than metal, but also
harder and more resistant to
high temperatures.
Within each disc is a system of
internal channels which provide
highly efficient heat dispersal,
particularly during heavy use. An
area of ongoing development,
we’ve now doubled the number
of channels and optimised the
airflow characteristics. With twice
the number of internal walls, thenew PCCB disc has even greater
structural stability. The ring of
vent openings around the outer
rim is one of the key distinguishing
features of this technology.
Matched to the disc is a special
brake-pad compoun d offering
rapid deceleration and consistent
friction properties. The front pads
are mounted in six-piston monobloc
aluminium calipers, while those at
the rear come in four-piston units.
Porsche Ceramic Composite
Brake (PCCB).
The Cayman S is also available
with a carbon fibre-reinforced
ceramic brake system: the
Porsche Ceramic Composite
Brake (PCCB). The PCCB disc is
made from a specially treated
carbon-fibre compound that is
silicated in a high-vacuum process
at 1,700 ºC. The result is a
product that is not only much
The overall response is fast and
precise, with only moderate pedal
force required. The front disc
diameter – 350 mm – is larger
than that of the standard metal
disc. The longer radius brings
increased leverage and therefore
additional performance.
Even at high temperatures, the
thermal resistance of the ceramic
disc ensures excellent dimensional
stability. The ceramic material istotally resistant to corrosion and
offers excellent acoustic damping
properties. Braking distances
are significantly reduced in even
the toughest road and track
conditions. Inherent fade resistance
ensures optimum balance when
slowing the car from high speed.
Porsche Ceramic Composite Brake (PCCB) The new Cayman and the Cayman S |
Safety
Cayman S
The key advantage of PCCB is
its ultra-lightweight construction.
Compared with conventional metal
discs, it offers a remarkable
weight saving of approximately
50 %.
As well as enhancing performance
and fuel economy, this represents
an enormous reduction in both
unsprung and rotating mass –
important factors when it comes
to handling, agility and comfort.
To find out more, see the latest
PCCB brochure.

· 69 · · 68 ·
ComfortSome say comfort is unnecessary
in a sportscar. For us, it’s another
aspect of performance. When a
car is as capable as the Cayman
or Cayman S, why compromise on
your enjoyment? With this in mind, we’ve applied
Porsche engineering principles
to find the optimum blend of
interior materials and cockpit
ergonomics. We’ve also
incorporated all of those features
that make driving such apleasure. This unique combination
of comfort and functionality is
an integral part of the Cayman
driving experience. The result is
a car that defies categorisation.
Except, of course, that it’s a
Porsche.

410 litres of loadspace

Air conditioning

CDR-24 CD radio

Porsche Communication
Management (PCM – optional)

BOSE®Surround Sound System
(optional)

· 73 · · 72 ·The new Cayman and the Cayman S |
Comfort
consumption, average speed,
range till empty and audio
information.
Steering wheel.
Both Cayman models have a three-
spoke leather steering
wheel with full-size airbag as
Instruments.
A single glance is all it takes –
particularly when it comes to the
instruments. The familiar Porsche
grouping of symmetrical round
instruments forms an integral
part of the cockpit design.Above the instruments is a
specially designed shroud with
semi-transparent grille. The dials
on the new Cayman have a black
background, while those on the
Cayman S have an aluminium-
coloured finish. Both sets of
instruments feature crisp white
backlight illumination. An integral
light sensor automatically adjuststhe degree of illumination to match
the ambient light conditions.
The dials provide a continuous
overview of all key information,
including external temperature,
time, trip odometer, total odometer
and vehicle speed. You can also
view a range of additional data
from the standard on-board
computer, e.g., average fuel
access to audio, navigation and
– if fitted – telephone functions
(only in conjunction with PCM).
For a detailed overview of the
available steering wheel options,
see pages 109-113. standard. Special features include
40 mm of height and reach
adjustment. A smooth leather
finish is available as an optional
extra on the steering wheel rim
and airbag module. Alternatively,
you can specify a three-spoke
sports or three-spoke multifunction
wheel. The latter is equipped with
six integral keys offering direct
Cayman dashboard with optional equipment, e.g., leather interior package with two-tone combination, PCM

· 75 · · 74 ·
Sports seats.
The optional leather sports seats
offer firmer upholstery than the
standard seat design. Higher side
bolsters on backrest and squab
provide additional lateral support.
The fore/aft position and height
are mechanically adjustable, while
the backrest is electrically
controlled.
Electrically adjustable seats.
This second seat option features
full electric adjustment of fore/aft
position, height, backrest angle,
squab angle and lumbar support.
A memory function stores your
seat and lumbar support settings
along with the exterior mirror
positions. Two sets of preferences
can be stored and selected using
buttons conveniently located on
the door panel. A further set of
preferences can be stored in each
of the two key remotes. When
either of the remotes is used to
open the doors, the corresponding
seat and mirror settings are
automatically selected.
The new Cayman and the Cayman S |Comfort
Adaptive sports seats.
This alternative seat option
combines excellent comfort with
a driver memory function. The
comprehensive range of power
adjustment controls include
fore/aft position, height, backrest
angle, squab angle and lumbar
support. The side bolsters
on backrest and squab are
pneumatically adjustable for the
perfect fit. This exceptional
variability ensures generous
comfort on long-distance journeys
as well as precision support when
cornering. The memory function
includes both exterior mirrors as
well as all seat settings except
for the squab and backrest side
bolsters.
Seat heating.
All seat variants can be equipped
with an optional two-stage heating
function for backrest and squab.
Air conditioning.
The standard air conditioning in
the new Cayman and Cayman S
offers quiet, efficient operation.
Settings can be adjusted from
either seat position using simple
plus and minus keys.
For optimum comfort, you can
select different temperature
settings for the upper and lower
areas of the cockpit. Other
convenient features include a
windscreen defroster function.
As an optional alternative, we
can equip your car with a fully
automatic air-conditioning system.
Offering consistent control of
interior temperature, the
system uses a solar sensor
to compensate for the effects
of ambient light.
Cruise control.
This optional system provides
automatic speed control between
30 and 240 km / h (20-149 mph).
It is operated via a separate
control stalk on the steering
column and can be used in all
available gears.
Standard seats.
The standard seats have a
leatherette finish with Alcantara
facings. Special features include
thorax airbags in each seat
backrest, enhanced lateral
support, and a specially designed
spring system that is adapted to
the chassis of the car. The high
side bolsters provide optimum
support without any feeling of
restriction. Generous seat travel
and adjustment options mean that
even taller drivers can find the
ideal seat position. The backrest
angle is electrically controlled,
while the fore/aft position and
height are mechanically adjustable.
Two-stage heating is available as
an optional extra.
Electrically adjustable seat Adaptive sports seat Sports seatAutomatic air conditioning