2011 PORSCHE CAYMAN S sensor

4041
Input dataRegulation/control of
Electronic engine management
ME 7.8/Cayman – SDI 3.1/ Cayman S
Engine load
Lambda sensor signals
Engine speed (from crankshaft)
Inlet camshaft phase angle
Knock sensor signals
Vehicle speed
Air-conditioning settings
Accelerator pedal
Temperatures
– Coolant
– Intake air
– Air in engine compartment
– Engine oil
– Ambient air
Pressures
– Engine oil
– Fuel
– Ambient air
Ignition
Manifold injection (Cayman)/
direct fuel injection (Cayman S)
Heating of Lambda sensors
Fuel pump (Cayman)/
fuel pumps controlled on demand
(Cayman S)
Fuel-tank venting
CAN interface with driving dynamics control, transmission control, immobiliser, instrument cluster, climate control,
SPORT button, SPORT PLUS button, sports exhaust system button, diagnostics, etc.
Valve lift switchover
(VarioCam Plus)
Secondary-air injection (Cayman)
Starter
Throttle-valve angle
Idling via throttle valve
and ignition
Fuel pressure (Cayman S)
Throttle valve
Camshaft position
Engine fan
Continuously variable oil pump
Cayman
same conditions, they are
monitored individually by the
knock control. The ignition point
is shifted individually, as and
when necessary, to protect the
cylinders and pistons at high
engine speeds. The on -board
diagnostics, which are compliant
with European standards, ensure
timely detection of any faults
and defects that may occur in the
exhaust and fuel systems and
notif y the driver immediately. This
also prevents increased pollutant
emissions and unnecessary fuel
consumption.Engine cooling system.
Our cross-flow cooling system,
as used in motorsport, minimises
the engine’s tendency to knock
and ensures comparatively low
emissions, fuel consumption and
noise levels.
Engine management system
with E-Gas.
The electronic engine management
system ensures optimum engine
performance at all times. It regu-
lates all engine-related functions
and assemblies (see diagram).
The results: optimum performance
and torque with comparatively low
fuel consumption and emissions.
Another important function of the
system is cylinder-specific knock
control. Since the six cylinders
never all work under exactly the
Cayman | Drive

4445
Cayman S exhaust systemCayman S t win tailpipes Cayman S
Cayman tailpipe
circuitry controls and monitors
each cylinder bank separately.
For each exhaust tract, four corre
-
sponding oxygen sensors regulate
the composition of the exhaust
gas and monitor the conversion
of pollutants in the cataly tic con -
verters.
A sports exhaust system – for
a
more resonant sound – is
available as an option for

each of the Cayman models.
Ignition system.
The ignition system is designed
for static high -voltage distribution.
Individual ignition coils on each
of the spark plugs ensure perfect
ignition every time. The individual
ignition coils are controlled
directly by the engine electronics.
Servicing.
It is a good idea to have your
vehicle serviced regularly, but it
makes just as much sense to keep
the time bet ween maintenance
services as long as possible. Why?
Because a Porsche belongs on
the road, and not in the workshop.
The alternator, power-steering
pump and the air- conditioning
compressor are all driven by a
Exhaust system.
The exhaust system – with t win
tailpipes on the Cayman S – is
made of stainless steel. Until it
converges in the connecting tube,
the exhaust gas is channelled
through t wo separate tracts and,
thanks to separate exhaust gas
cleaning systems, the exhaust
gas can flow more freely – for
increased power and torque.
The stereo Lambda control
single self-adjusting belt. Hydraulic
valve clearance compensation
makes valve clearance adjustment
unnecessary. The drive chains
on the camshaf ts do not normally
require servicing. With the sole
exception of the spark plugs,
the ignition system is also
maintenance-free.
Put simply, we don’t expect to
see your Porsche too often.
Cayman | Drive

6061
Mechanically locking rear
differential.
Are you a fan of sport y driving? In
your spare time, do you enjoy the
occasional outing on the racetrack?
Then you shouldn’t do without the
optional mechanically locking rear
differential available in conjunction
with 18-inch or 19-inch wheels.
It further enhances the traction of
the driven rear wheels on uneven
roads and when accelerating out of
tight bends, and the damping of
load-change reactions during
fast cornering is reduced. Road
holding at the limits of perform-
ance is even more impressive. The
car holds its course bet ter and so
PSM (p. 72) intervenes less often.
In other words, sheer driving
pleasure and faster lap times.
Porsche Active Suspension
Management (PASM).
The optional PASM is an electronic
damping control system. PASM
actively and continuously regulates
the damping force for each wheel
according to the road conditions
and driving st yle. In addition, the
suspension is lowered by 10 mm.
The driver can select bet ween
t wo dif ferent modes: ‘Normal’
which is a blend of performance
and comfort, and ‘Sport ’ where
the setup is much firmer.
Depending on the mode selected,
therefore, PASM is sportier or
more comfortable than the
standard chassis. The PASM
control unit evaluates the driving
conditions and modifies the
damping force on each of the
wheels in accordance with the
selected mode. Sensors monitor the movement
of the vehicle body, for example,
under heav y acceleration and
braking or on uneven roads. The
control unit tunes the dampers
to the optimum hardness for the
selected mode to reduce roll and
pitch still further and to increase
contact bet ween each individual
wheel and the road.
In ‘Sport ’ mode, the suspension
is set to a harder damper rating.
On uneven roads, PASM immedi
-
ately switches to a softer rating
within the ‘Sport ’ setup range,
thereby improving contact
bet ween the wheels and the road.
When the road surface improves,
PASM automatically reverts
to the original, harder rating.
If ‘Normal’ mode is selected and
the driver’s st yle becomes more
assertive, PASM automatically
switches to a harder rating
within the ‘Normal’ setup range.
Damping becomes harder, and
driving stabilit y and road safet y
are increased.
Compression in ‘Normal’ mode –
working piston and bypass,
sporty-comfortable tuning Rebound in ‘Normal’ mode –
working piston and bypass,
sporty-comfortable tuning
Compression in ‘Sport ’ mode –
working piston only,
sport y- hard tuning Rebound in ‘Spor t ’ mode –
working piston only,
sporty-hard tuning
Cayman | Chassis

6667
Cayman SBi -Xenon headlights with dynamic cornering lights and LED day time running lights Night design, rear
Night design, front
There can be no driving pleasure without peace of mind.
Introducing the safety features of the Cayman models.
The low front fog lights of fer
outstanding illumination and a
high -level third brake light is
neatly integrated into the rear
window. LED technology is used
in the taillights, brake lights and
rear fog light to provide bet ter
illumination and respond more
quickly to driver input.
Bi-Xenon headlights with
dynamic cornering lights and
LED daytime running lights.
Available as an option for the
Cayman models are Bi-Xenon
headlights including dynamic
cornering lights and LED day time
running lights. Bi-Xenon headlights
are around t wice as powerful as
halogen headlights so they of fer
improved visibilit y and illuminate
the road more evenly. In fact, they
are so ef fective that fog lights are
no longer necessary. A headlight
cleaning system is built in.
Dynamic cornering lights of fer
particularly effective illumination
of the road ahead, particularly
through bends. Sensors continu
-
ously monitor the speed, lateral
acceleration and steering lock
and, from these variables,
calculate the course of the bend.
This determines the angle of the
dynamic cornering lights, with the
lights able to swivel towards the
inside of the bend up to a limit of
15 degrees, even with the main
beam switched on.
Active safety.
Active safet y is a topic that
Porsche actively supports. With
generous safet y margins, even
the suspension tuning makes a
decisive contribution. Optimum
acceleration enables rapid
overtaking and optimum braking
minimises stopping distances.
Safe contact with the road is
provided not only by the wheel/
t yre combination but also by the auto - deploying bi-plane rear
spoiler and aerodynamic front end.
Another important standard
safet y feature is Porsche Stabilit y
Management (PSM, p. 72).
See and be seen. This is a
slogan that t ypifies the headlights
concept. The design is unmistak
-
able, the brightness unmissable.
The halogen headlights with LED
position lights in the front light unit
ensure clear visibilit y at all times.
Cayman | Safet y

7273
1
1
1
23
4
1
Sheet steel
Tailored blanks
Super high-strength steel
Ultra high-streng th steel
Aluminium
it is automatically reactivated for
your safet y if either of the front
wheels (in ‘Sport ’ mode, both
of the front wheels) requires ABS
assistance. ABD remains perma -
nently active. Two additional
functions of PSM increase safet y
even further: precharging of the
brake system, and brake assist.
If you suddenly release the accel -
erator pedal, PSM automatically
readies the braking system. With
the braking system having been
precharged, the brake pads are
already in light contact with the
brake discs. Maximum braking
power is therefore achieved much the car. The forces exerted in a
frontal collision are transmit ted
into the side structure along a
higher load path (4), which improves
the deformation characteristics
of the passenger cell even further.
Porsche Stability Management
(PSM).
PSM, which comes as standard, is
an automatic control system that
stabilises the vehicle at the limits
of dynamic driving performance.
Sensors continuously monitor
driving direction, speed, yaw veloc-
it y and lateral acceleration. Using
this information, PSM computes the
actual direction of motion. If this
direction deviates from the desired
course, PSM initiates braking
interventions targeted at individual
wheels in order to stabilise the
vehicle.
sooner. When sudden braking is
detected, the brake assist function
applies maximum brake pressure
to all four wheels.
Passive safety:
engineered design.
The system of longitudinal and
transverse members at the front
of the vehicle (1) distributes the
Under acceleration on wet or
low-grip road surfaces, PSM
improves traction using the ABD
(automatic brake differential)
and ASR (anti-slip regulation)
functions, giving an agile
response. When ‘Sport ’ mode is
selected on the optional Sport
Chrono Packages (p. 62), the PSM
intervention threshold is raised to
enable greater driver involvement
– particularly at speeds of up to
approximately 70 km/ h (45 mph).
The integrated ABS can further
reduce the braking distance.
For an even sportier drive, PSM
can be deactivated. However, forces exerted onto the bodyshell
in the event of an impact and

minimises deformation of the
passenger cell. Our patented

body work structure with a rigid
bulkhead cross member (2) made
of ultra high-strength steel absorbs
the forces introduced into the
system of longitudinal members
which prevents deformation of the
foot well. The reinforced doors (3)
contribute to the overall rigidit y of
Cayman
Cayman | Safet y

7475
Porsche Side Impact Protection System (POSIP)Cayman
Other passive safet y features
include headrests integrated into
the seat backrests, an energy
absorbing steering column,

three-point seat belts, front seat-
belt pretensioners and force
limiters, energy-absorbing
elements in the dashboard
and flame-resistant materials
throughout the interior.
Child seats.1)
The child seat preparation
package, which includes ISOFIX
mounting points and a key switch
for deactivating the passenger
airbag, is available from Porsche
Tequipment. A full range of
child seats is also available from
Porsche Tequipment.
Passive safety: airbags.
Each of the full-size airbags is
inflated in t wo stages, depending
on the severit y of an accident.
In less serious accidents, the
airbags are only partially inflated,
thereby minimising discomfort
for the occupants. Also fit ted as
standard is the Porsche Side
Impact Protection System
Anti-theft protection.
Both models are equipped
with an immobiliser with in -key
transponder. In addition, the
Cayman S has an alarm system
with contact-sensitive exterior
protection as standard (optional
for the Cayman). It is activated
and deactivated by the remote
control integrated in the ignition
key, which is also used to lock and
unlock the doors. Radar-based
interior surveillance is available as
an option for both models.
(POSIP). It comprises side impact
protection elements in the doors
and t wo airbags on each side. An
integral thorax airbag is located
in the seat backrests, while each
door panel contains a head air
-
bag. With each having a volume
of approximately 8 litres, these
airbags of fer excellent protection
in the event of a side impact.
Porsche Vehicle Tracking
System (PVTS).
In conjunction with the alarm
system, this optional preparation
enables future installation of the
Porsche Vehicle Tracking System
(PV TS) available from Porsche
Tequipment. It makes it possible
to locate a stolen vehicle across
most of the countries of Europe.
The package includes a special
wiring loom and a higher- capacit y
bat tery. A tilt sensor for the alarm
system is also included.
1) Child seats must not be used with
sports bucket seats.
Cayman | Safet y

8485
Rear screenCayman with Park Assist
Water-repellent side windows.
The surfaces of the side windows
are treated with a water-repellent
coating so that not only water but
also dirt runs away more easily,
thereby providing optimum visibilit y
even in poor weather.
Windscreen wipers.
The windscreen wipers with
an adjustable intermit tent wipe
speed are aerodynamic and
ParkAssist.
As soon as reverse gear is
engaged, the optional Park Assist
is activated automatically. If you
move too close to an obstacle,
a warning signal begins to sound,
becoming faster until the car
stops. The sensors of the optional
Park Assist are neatly concealed in
the rear bumper.
‘Welcome Home’ lighting.
When the vehicle is opened
or closed using the key remote,
the standard automatic locator
lighting automatically switches on
the fog lights and LED day time
running lights. This is particularly
convenient at night. In conjunction
with the optional PCM (p. 92) and
Sport Chrono Package Plus (p. 63),
the delayed lighting switch - of f
period can be adjusted as desired. inconspicuous. The windscreen
washer system has t wo heated
and filtered nozzles. An integrated
rain sensor is available as
an option (in conjunction with
auto-dimming mirrors).
Rear screen.
The rear screen is tinted and has
heating functionalit y. Its generous
size af fords excellent rearward
visibilit y. A detachable fabric
screen on the inside of the rear lid
HomeLink® (programmable
garage door opener).
The optional programmable
garage door opener is integrated
into the overhead console and
remotely controls up to three
different garage doors, gates,
home lighting and/or alarm
systems.
provides additional privacy for
the main luggage area.
Rear wiper.
The Cayman models can be
equipped with an effective and
streamlined rear wiper on request.
It is st yled to blend seamlessly into
the overall design of the vehicle.
Cayman | Comfort

100101
Top marks for cleanliness.
each cylinder bank separately,
while another Lambda sensor
on each cylinder bank monitors
pollutant conversion in the respec-
tive cataly tic converter (p. 44).
1)
In an era of intensif ying debate
about global climate change and
CO
2 emissions, every automotive
manufacturer is asking itself
what it has to of fer in terms
of environmental protection. Our
answer has long been the same:
maximum ef ficiency.
Over the last 15 years, Porsche
has managed to reduce the
fuel consumption of its vehicles
by an average of 1.7 % each year.
Improvements in fuel economy
also have a beneficial impact
on CO
2 emissions. This has been
achieved through an ef ficient
drive concept (DFI), light weight
construction, optimum aerody -
namics and low rolling resistance.
The goal? Pure performance – but
not at the expense of the environ -
ment. A goal achieved by the
Cayman models.
Exhaust emission control.
Both engines comply with the Euro
5 emission standard
in Europe and
LEV II/ ULEV in
the USA. Vehicles
manufactured by Porsche demon-
strate that even
high -performance
sportscars can achieve moderate
em issio n
values in their respective
category. In short, the Cayman
is not only sport y, it is also clean.
This at tribute is achieved by
means of a t wo -stage cascade-
t ype cataly tic converter
which comprises t wo monolith
substrates on each of the t win
exhaust tracts. These specially
coated substrates contain
ultra-fine honeycomb channels in
which pollutants are converted
as exhaust gas passes through.
The stereo Lambda control
circuitry controls and monitors
Cayman | Environment
1) Not in markets with leaded fuel.
Cayman models: fuel consumption in l/100 km (mpg) urban 14.1 (20.0) –13.6 (20.8) ·
extra urban 7.1 (39.8) – 6.5 (43.5) · combined 9.5 (29.7) –9.1 (31.0); CO
2 emissions 223–214 g / km