2011 PORSCHE CAYMAN S fuel pressure

36
1
2
3
4
56
78
9
11
12
13
14
15
16
19
20
21
10
17
18
20
37
3.4 - litre flat-six engine of the Cayman S
1. High-pressure pump
2. High-pressure injector
3. Ignition rod module
4. Camshaft controller
5. Switch tappet with integrated
valve clearance compensation
6. Intake camshaft
7. Intake valves
8. Valve spring
9. Combustion chamber with
Alusil cylinder liner surface
10. Forged aluminium piston
11. Forged connecting rod
12. Crankshaft
13. Water pump
14. Vibration damper
15. Resonance valve
16. Distribution pipe flap
17. Intake manifold with integrated
sound chamber
18. Vacuum pump
19. Coolant jacket
20. Crankcase breather
21. Timing chain
Cayman | Drive
Cayman S: fuel consumption in l/100 km (mpg) urban 14.1 (20.0) –13.6 (20.8) ·
extra urban 7.1 (39.8) – 6.6 (42.8) · combined 9.5 (29.7) –9.4 (30.1); CO
2 emissions 223–221 g / km

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

50
46
2
1
R
7 3
5
51
4
6
2
R1
3
7
5
Multi - plate clutch 1
Multi - plate clutch 2
Semi -gearbox 2
(2nd, 4th, 6th gear)
Semi -gearbox 1
(1st, 3rd, 5th, 7th, R gear)
Differential
Engine
Rear wheel
Rear wheel
Porsche Doppelkupplung (PDK) PDK function diagram
is established, and power is
transmit ted to the wheels.
The gear which is engaged is
displayed on the instrument
cluster. Depending on the
gearshif t programme, the gear
change is optimised for comfort
or for sport y handling and takes
place in a mat ter of milliseconds.
The advantages over a fully
manual transmission are very Package, PDK is enhanced by
the ‘Launch Control’ and ‘motor
-
sport- derived
gearshift strategy’
functions (p. 62).
In essence, PDK combines
sportiness with ef ficiency and
comfort. What does all this
mean for you? Exactly what you
would expect: uninterrupted
driving pleasure.
Porsche Doppelkupplung (PDK)
in detail.
The crankshaf t transmits engine
torque to the dual-mass fly wheel
which is then channelled through
the clutch housing and onto the
multi-plate clutches, or to be more
precise, the outer disc carrier.
Under oil pressure, clutch 1 closes
and forms a frictional connection rapid gearshif ts with no
interruption in the flow of power,
which result in a considerably
faster rate of acceleration for the
same rate of fuel consumption.
The advantage over a fully
automatic transmission is the

perceptible increase in driving
dynamics – with a similar level of
comfort, and a distinct reduction
in fuel consumption.
with input shaft 1. The torque is
now transmit ted through the
dif ferential to the rear axle.
At this stage, PDK has already
preselected the next gear.
Engine torque is already acting
on the other outer disc carrier
and, in response to a gear change
signal, the overlap shift is

initiated, i.e. as clutch 1 opens,
clutch 2 closes. The non-positive
connection with input shaf t 2 The compact dimensions of the
gearbox reduce rotational masses
which means that the engine
response is more direct and the
system is more light weight.
This, along with the long-ratio 7th
gear, helps to achieve relatively
low fuel consumption and

emission figures comparable
with those of a manual gearbox.
With the optional Sport Chrono
Cayman | Drive

8081
Cayman S dashboard with optional equipment, including PCM, cordless handset, Tyre Pressure Monitoring (TPM), Sport Chrono Package Plus and PDK
Doppel
kupplung (PDK), as well as
the selected gear. The dial on the
left contains the analogue speed -
ometer with digital trip meter and
total distance display. The design
and legibilit y of the dials are also
enhanced by the white backlight
illumination.as an option is the SportDesign
steering wheel with gearshift

paddles (p. 52).
For extra comfort on those cold
days, steering wheel heating is
also available on request for all
steering wheels (available only in
conjunction with seat heating).
Instruments.
Each black circular dial in the
instrument cluster – aluminium-
coloured in the Cayman S model
– provides important information
at a glance. In the centre is the
analogue rev counter with digital
speedometer and a customisable
display of key data from the
Steering wheels.
The Cayman models feature as
standard a sports steering wheel
with full-size airbag. The steering
wheel is adjustable for height and
reach and the rim is in smooth-
finish leather. As an option, you

can specify a multifunction steering
wheel in leather with integrated
but tons for the most essential
audio and, where applicable,
standard on -board computer.
Additional data, such as average
fuel consumption, fuel range
or the data of the optional TPM
can be shown as desired.
The right-hand dial displays a
range of information, including
the outside temperature and shif t
pat tern of the optional Porsche navigation and telephone functions.
Alternatively, the multifunction
steering wheel is available in
smooth-finish leather, Aluminium
Look, carbon or macassar wood.
Fit ted as standard in conjunction
with Porsche Doppelkupplung (PDK)
is the sports steering wheel with
gearshift switches. A multifunction
version of this steering wheel is
offered as an option. Also available
Cayman | Comfort

136137
Index
Te r m Pa g e
A
Active safet y 66
Airbags 74
Air- conditioning system 83
Anti-theft protection 75
Audio interface, universal 95
B
BOSE® Surround Sound
System 96
Braking system 69
C
CD autochanger 95
CDR-30 audio system 90
Chassis 56
Child seats 75
Colours 108
Cornering lights, dynamic 67
Cruise control 83
D
Direct fuel injection 34
Dry-sump lubrication,
integrated 38
E
Engine cooling 40
Engine management 40
Engine, flat-six 32
Environment 98
Exclusive 127
Exhaust emission control 100
Exhaust system 44
F
Factory collection 128
Fuel 103
Fuel system 103
G
Garage door opener
(HomeLink
®) 84
H
Headlight cleaning system 67
Headlights, Bi-Xenon 67
Hill-start assist 53
HomeLink
® (programmable
garage door opener) 84
I
Ignition 44
Instruments 80
L
LED day time running lights 67
Logbook, electronic 94
Luggage compartment, front 86
Luggage space, rear 86
M
Maintenance 103
Maintenance requirements 45
Manual gearbox 53
Materials 103
N
Navigation module 92
Noise 103
O
Oil supply 38
On -board computer
integrated 80
P
ParkAssist 85
Passive safety 73
Personalisation options 106
Porsche Active Suspension
Management (PASM) 60
Porsche Ceramic Composite
Brake (PCCB) 70
Porsche Communication
Management (PCM) 92
Porsche Doppelkupplung
(PDK) 48
Porsche Side Impact
Protection System (POSIP) 74
Porsche Stability Management
(PSM) 72
Porsche Vehicle
Tracking System (PV TS) 75
R
Rear differential lock 60
Rear wiper 85
Recycling 103 Resonance intake manifold
43
Roof transport system 89
S
Safet y, active 66
Safet y, passive 73
Seat heating 83
Seat ventilation 83
Seats, comfort 82
Service 130
Side windows,
water-repellent 84
Sound Package Plus 95
Sport Chrono Package 62
Sport Chrono Package Plus 63
Sports bucket seats 83
Sports exhaust system 44
Sports seats 82
Sports seats, adaptive 82
Standard seats 82
Steering 58
Steering wheel heating 81
Steering wheels 81
Storage compartments 88
T
Technical data 134
Telephone 94
Telephone preparation 95
Transport concept 86
TV tuner 94
Tyre Pressure Monitoring
(TPM) 59
V
VarioCam Plus 43
Voice control system 94
W
‘Welcome Home’ lighting 84
Wheels 59
Windscreen wipers 84
Index