cooling PORSCHE CAYMAN 2006 1.G Information Manual

· 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

· 125 · · 124 ·The new Cayman and the Cayman S |
Index
A
Active safety 58
Adaptive sports seats 75
Air conditioning 75
Anti-theft protection 67
B
Bi-Xenon lighting system with
headlight cleaning 59
BOSE
®Surround Sound
System 84
Braking system 60
C
CD autochanger (CDC- 4) 87
CD radio (CDR-24) 83
Child seats 67
Colours 96
Cruise control 75
Cylinder-specific
knock control 40
D
Driver and passenger airbags 66
E
Electrically adjustable seats 74
Electronic logbook 87
Engine and gearbox mounts 42
Engine cooling 36
Engine management system
with electronic throttle
(Motronic ME7.8) 37
Exhaust emission control 90
Exhaust system 40
Extended navigation module 87
F
Factory collection 116
Fuel system 90
Index
H
HomeLink®
garage-door opener 76
I
Ignition system 40
Instruments 72
Intake manifold, two-stage
resonance 38
Integrated dry-sump
lubrication 36
L
Load-carrying capability 79
Luggage compartment, front 79
Luggage compartment, rear 79
M
Manual gearbox with
dual-mass flywheel 44
Materials and recycling 90
MOST
®bus 83
N
Navigation system 86
Noise 90
O
Oil-level indicator 36
On-board computer 86
Optional equipment 94
P
ParkAssist 77
Passive safety 65
Porsche Active Suspension
Management (PASM) 52
Porsche Ceramic Composite
Brake (PCCB) 62
Porsche Communication
Management (PCM) 86
Porsche Side Impact
Protection (POSIP) 66
Porsche Stability
Management (PSM) 64
R
Rear screen 77
Roof transport system 81
S
Seat heating 75
Seats 74
Service 118
Servicing 41, 91
Six-cylinder boxer engine 30
Sound Package Plus 83
Sport Chrono Package 54
Sport Chrono Package Plus 55
Sports exhaust system 41
Sports seats 74
Steering 50
Steering wheel 73
Storage compartments 80
Suspension 48
T
Technical data 122
Telephone module 87
Telephone preparation 83
Tiptronic S 45
Tyre Pressure Monitoring
(TPM) 51
V
VarioCam Plus 39
Vehicle tracking system 67
W
Water-repellent side windows 76
‘Welcome Home’ lighting 76
Wheels 51
Wipers, front 76
Wiper, rear 77