engine oil PORSCHE BOXSTER S 2010 2.G Information Manual

· 32 ·· 33 ·
Boxster and Boxster S
Lightweight construction.
Both Boxster models are equipped
with alloy engines. Ingenious
design down to the finest detail
has enabled weight – and conse-
quently fuel consumption – to be
reduced. Integrating the camshaf t
bearings fully into the cylinder
heads is just one example of the
ef fective light weight construction
measures that have been imple -
mented.
Integrated dry-sump lubrication.
Integrated dry-sump lubrication
guarantees a reliable oil supply
while reducing engine tempera -
tures, even in sportily driven cars.

The oil reservoir is located inside
the engine. Four oil pumps trans -
port the oil from the cylinder heads

directly into the oil sump. A fif th
pump in the oil sump directly sup -plies the lubricating points in the
engine. To reduce power losses
and increase efficiency, an elec
-
tronically controlled oil pump
supplies the engine lubrication
points as and when required.

This means that the oil pump does
not work so hard when there is
less demand for lubrication. The
benefits of an on-demand oil
supply system are optimum effi -
ciency combined with a reduction in both fuel consumption and

CO
2 em issio ns.

For the engine, these detailed
solutions mean a consistent

oil supply, regardless of gravita -
tional loads, even in the most
demanding track conditions.
Engine cooling system.
Our cross-flow cooling system,
as used in motorsport, supplies
each cylinder uniformly with cool -
ant. Valves are thus protected
against overload and premature
wear, which minimises the
engine’s tendency to knock and
reduces emissions, fuel con -
sumption and engine noise.
Boxster | Drive

· 34 ·· 35 ·
Boxster
Boxster
Boxster
Engine management system
with electronic throttle.
The electronic engine manage -
ment system ensures optimum
engine performance under all
operating conditions. It regulates
all engine-related functions and
assemblies (see diagram). The
results: optimum performance
and torque with reduced fuel con -
sumption and emissions.
Another important function of the
system is cylinder-specific knock
control. Since the six cylinders
never all work under precisely
the same conditions, they are
monitored individually by the
knock control. If necessary, the
ignition point is shifted individu -
ally to protect the cylinders and
pistons at high engine speeds
and loads. The on-board diagnos -
tics, which are compliant with
European standards, ensure
timely detection of any faults and
defects that may occur in the
exhaust and fuel system in good
time and notify the driver
immediately. This also prevents
increased pollutant emissions
and
unnecessary fuel consumption.
Two-stage resonance intake
manifold.
The intake manifold with dual-flow
distributor pipe has an adjustment
valve which closes and opens at
set engine speeds. A t wo -stage
tuning effect creates oscillation
of the air mass in the intake

system, which in turn generates
a turbocharging effect and opti -
mises induction.
These t wo effects combine to
produce higher torque at low
engine speeds, a flat ter torque
curve, and increased power
output at high engine speeds.
The acoustic properties of the
system are second to none,
producing the characteristic
Boxster sound.
Boxster | Drive
Input data Used to regulate/control
Engine management system
ME 7.8/Boxster – SDI 3.1/Boxster S
Engine load
Lambda sensor signals
Engine speed (from crankshaft)
Inlet camshaft phase angle
Knock sensor signals
Vehicle speed
Pressures
– Engine oil
– Fuel
– Ambient air
Air-conditioning settings
Accelerator pedal
Temperatures
– Coolant
– Intake air
– Air in engine compartment
– Engine oil
– Ambient air
Ignition
Heating of lambda sensors
Fuel pump (Boxster)/fuel pumps
controlled on - demand (Boxster S)
Camshaft position
Fuel-tank venting
Engine fan
Starter
Continuously variable oil pump
Fuel pressure (Boxster S)
Throttle valve
Throt tle -valve angle
Idling via throttle valve
and ignition
Manifold injection (Boxster)/
direct fuel injection (Boxster S)
Valve lift switchover
(VarioCam Plus)
Secondary-air injection (Boxster)
CAN inter face with driving dynamics control, transmission control, immobiliser, instrument cluster, climate control,
SPORT button, SPORT PLUS button, sports exhaust system button, diagnostics, etc.

· 36 ·· 37 ·
VarioCam Plus.
VarioCam Plus combines variable
valve timing with t wo -stage lift
on the inlet side. This results in
smoother running, bet ter fuel
economy and lower exhaust emis-
sions. As well as greater top - end
power and low-end torque.
This two-in-one engine concept
seamlessly adapts in response to
driver input. The result: instant
acceleration and extremely smooth
running.

The variation in intake timing is
steplessly controlled by means of
an electro -hydraulic rotary vane adjuster at the head of the corre
-
sponding camshaft.To improve throt tle response
during the warm-up phase, Vario -
Cam Plus selects high valve lifts
with retarded valve timing. In the
middle and low load ranges, low
valve lifts with advanced timing
Boxster | Drive
reduce fuel consumption and
exhaust emissions. High valve
lifts generate high torques and
maximum output.
VarioCam Plus Boxster S and Boxster
Ignition system.
The ignition system in the Boxster
models is designed for high-
voltage static distribution. The
individual ignition coils, located
on the spark plugs for optimum
ignition reliabilit y, are controlled
directly by the engine electronics.

· 44 ·· 45 ·
Under oil pressure, clutch 1
closes and forms a frictional
connection with input shaf t 1.
The torque is now transmit ted
through the first half gearbox
– and then the dif ferential – to
the rear axle. At this stage,
PDK has already preselected
the next gear in the second
half gearbox. Engine torque
is already acting on the other
outer disc carrier and, in
response to a gear change
signal, the overlap shift is initi -
ated, i.e. as clutch 1 opens,

clutch 2 closes. The non-positive
connection with input shaft 2
is
established, and power is
trans
mit ted to the wheels.
The gear which is engaged is
displayed on the instrument
cluster.
Depending on the gearshift
programme, the gear change
is optimised for comfort or for
sport y handling and takes place
in a mat ter of milliseconds.

The advantage over a fully manual
transmission is the considerably
faster rate of acceleration for the
same rate of fuel consumption.
Boxster | Drive
The advantage over a fully auto -
matic transmission
is the per -
ceptible increase in driving
dynamics – with a similar level of
comfort, and a distinct reduction
in fuel consumption.
The com -
pact dimensions of the gearbox
reduce rotational
masses which
means a more direct engine
response, and the system is
more lightweight.
PDK function diagram
This, along with the long-ratio
7th gear, helps to achieve
reduced fuel consumption and
emission figures comparable with
those of a manual gearbox.
With the optional Sport Chrono
Package, PDK is enhanced by
the
‘Launch Control’ and ‘motor-
sport- derived gearshif t strategy’
functions (p. 57). In essence, PDK combines sport
i
-
ness with efficiency and comfort.

What does all this mean for you?
Uninterrupted driving pleasure.
Multi-plate clutch 1
Multi-plate clutch 2
Semi -gearbox 2
(2nd, 4th, 6th gear)
Rear semi-gearbox 1
(1st, 3rd, 5th, 7th, R gear)
Differential
Motor
Rear wheel
Rear wheel
Boxster

· 50 ·· 51 ·
Boxster and Boxster S
Suspension.
The suspension of the Boxster
models has been tuned to match
the high performance of the
engines.
Light weight coil- over McPherson
struts are combined with lateral
control arms to ensure excellent
driving dynamics and safet y on
all road surfaces. The axle kine-matics are designed for high
performance, as is the generous
wheel track. Light weight con
-
struction throughout keeps the
overall weight and unsprung
masses low, with almost all mov -
ing parts made from aluminium.
The mid-engine design, in com -
bination with the complex chassis
technology, results in minimum
roll and pitch movements on
cornering, braking and accel -
eration.
The chassis of the Boxster
models ensures high safet y
reserves irrespective of load,
and easily controllable load
transfer when cornering. Corner -
ing stabilit y is exemplary, even
in high-speed bends. The same
applies to straight-line stabilit y.
Steering.
What use is a perfect suspension
setup without perfectly tuned
steering? For Porsche, this would
be inconceivable. The solution
is a steering system which is as
precise and immediate as the
chassis itself and, thanks to the
power assistance, steering ef fort
is reduced to a comfortable
level. Around the straight-ahead
position, such as during motor -
way driving, the ratio is less
direct but with no loss of agilit y
or feedback.
Boxster | Chassis
The greater the steering angle,
the more direct the steering
ratio. This is particularly notice-
able when turning tight corners
or parking. The car has a turning
circle of just 11.1 m.
Front axle with McPherson struts and lateral control arms (Boxster S)
Rear axle with McPherson struts and lateral control arms (Boxster S)

· 78 ·· 79 ·
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 visibil-
it y even in poor weather.
ParkAssist.
As soon as reverse gear is
engaged, the optional Park Assist
is automatically enabled. 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.
Anti-theft protection.
The Boxster models are equipped
with an immobiliser with in-
key transponder. In addition, the
Boxster S has an alarm system
with contact-sensitive exterior pro -
tection as standard. On request
,
radar-based interior surveillance
is available which protects
the interior of the vehicle when
the hood is closed. For the
Boxster, the alarm system and
radar interior surveillance are
both available as options.
Boxster | Comfort
Vehicle tracking system.
In conjunction with the alarm
system, this optional preparation
enables future installation of a
vehicle tracking system 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 is included.
Two luggage compartments.
Two carpet-lined luggage compart -
ments are available. The front
loadspace capacit y is 150 litres,
with 130 litres at the rear –
even when the hood is lowered.
At the front there's enough room
for the large trolley from the
Porsche Travel System, while
the rear can accommodate the
Porsche golf bag. The luggage
compartment covers are made
of light weight aluminium.
A service hatch located in the
rear luggage compartment

enables easy refilling of coolant
and engine oil.
Front luggage compartment Rear luggage compartment Luggage compartments

· 128 ·· 129 ·
Te r m Pa g e
A
Active safet y 60
Adaptive sports seats 74
Airbags 66, 67
Anti-theft protection 78
Audio interface, universal 86
Audio system CDR-30 82
B
Bi-Xenon headlights 65
BOSE
® Surround
Sound System 88
Boxer engine 26
Braking system 61
C
CD or CD/ DVD autochanger 87
Chassis 48
Child seats 67
Climate control 76
Colours 100
Comfort seats 74
Cruise control 76
Cylinder-specific
knock control 35
D
Direct fuel injection (DFI) 28
Dry-sump lubrication,
integrated 32
Dynamic cornering lights 65
E
Electronic logbook 85
Engine cooling 33
Engine management system
with electronic throt tle 35
Environment 90
Exclusive, Porsche 119
Exhaust emission control 93
Exhaust system 38
F
Factory collection 120
Fuel 94
H
H a rd t o p 81
Headlight cleaning system 65Heated seats
75
Heated steering wheel 73
Hill -start assist 47
HomeLink
®
Garage door opener 77
Hood 80
I
Ignition system 37
Individual equipment 98
Instruments 72
L
LED day time running lights 65
Lighting concept 64
Lightweight construction 32
Luggage compartment 79
M
Maintenance 95
Manual gearbox 47
Materials 75
N
Navigation module 84
Noise 95
O
Oil supply 32
On-board computer,
integrated 72
P
Pa rk A ssist 78
Passive safet y 66
Porsche Active Suspension
Management (PASM) 54
Porsche Ceramic Composite
Brake (PCCB) 61, 62
Porsche Communication
Management (PCM) 83
Porsche Doppelkupplung
(PDK) 42
Porsche Exclusive 119
Porsche Side Impact
Protection (POSIP) 67
Porsche Stabilit y
Management (PSM) 63, 64
R
Rear differential,
mechanically locking 54
Recycling 93
Resonance intake manifold 35
Roll-over protection 67
S
Seat ventilation 75
Service 95, 122
Servicing 39
Side windows, water- repellent 78
Six-cylinder Boxer engine 26
Sound Package Plus 87
Sport Chrono Package 56
Sport Chrono Package Plus 57
SportDesign Package 106
Sports bucket seats 75
Sports exhaust system 38
Sports seats 74
Standard seats 74
S te e r i n g 51
Steering wheels 46, 73
Storage compartments 76
T
Technical data 126
Telephone module 85
Telephone preparation 86
T V tuner 85
Tyre Pressure Monitoring
( TPM) 52

V
VarioCam Plus 36
Vehicle tracking system 79
Voice control system 85
W
‘Welcome Home’ lighting 77
W heels 52
Wind deflector 81
Wiper system 77
Index