2010 PORSCHE BOXSTER S cooling

· 15 ·· 16 ·· 17 ·· 17 ·
Boxster S in Guards RedAir intake grilles
Exterior mirrorRear light module
The standard Porsche Stabilit y
Management (PSM, p. 63) further
enhances active safet y with its
brake assist feature and a pre-
charging function which increases
braking system readiness.

The design of the Boxster models
is governed by one philosophy
above all: that the st yling of a

Porsche reflects its inner values.
Here, the primary value is extreme
performance.
In the interior, the elegant sports
st yling is coupled with a high
degree of practicalit y. All the
important functions are intuitive
to control, including the optional
Porsche Communication Manage -
ment (PCM, p. 83) with 6.5-inch
touchscreen and CD/ DVD drive
with navigation module.
In conjunction with the PCM, the
optional BOSE
® Surround Sound
System supports 5.1 surround
sound.

A rhetorical question: What would
you do if we were to give you
the key now?
A real roadster is like true love:
you recognise it at first glance.
Design.
This concept also follows a
traditional Porsche theme: the
seamless blend of function
and design. Visually exciting
with performance to match.
The emphasis on high perform -
ance is immediately evident
from the front, where large air
intakes in a powerful geometric
design lend both Boxster models
a dynamic look – and increase
cooling power. On the Boxster,
the air intake grilles are finished
in the exterior colour, whereas
on the Boxster S they are con-
trasted in sporting black. The
athletic
appearance is comple -
mented by
striking spoiler lips.
The t wo models have a drag
coefficient
value of 0.29 and
0.30, respectively.
At the front, the headlight design
makes the Boxster models unmis
-
takable – especially at night.
The Boxster models are fit ted as
standard with halogen headlights
and LED day time running lights
integrated separately into the clus-
ters above the outer air intakes.
Bi-Xenon headlights with dynamic
cornering lights, including LED
day time running lights, are avail -
able on request. The dynamic
headlight design emphasises the
striking contour of the wing.

The rear features LED taillight
modules that blend harmoniously
with the overall design. The
centrally located stainless steel
tailpipe – t win tailpipes on the
Boxster S – and the rear diffusers
finished in sporting black com -
plete the powerful look. The
dynamic presence of the Boxster
models is further emphasised
by the clean, neat design of the
wheels. The Boxster is fit ted with
17-inch wheels as standard, the
Boxster S with 18-inch wheels.
A 19-inch option is available for
both models.
In short, although we rarely stick
to the rules, we have observed
one: form follows function. Design
and functionalit y are combined
perfectly in the Boxster models.
Boxster | The Boxster conceptBoxster | The Boxster concept

· 28 ·· 29 ·
Boxster S
Direct fuel injection (DFI).
The Boxster S engine has direct
fuel injection (DFI). With milli-
second precision, fuel is injected
directly into the combustion
chamber at up to 120 bar pres -
sure via electromagnetically
actuated injection valves.
The spray and cone angles have
been optimised for torque,
power output, fuel consumption
and emissions by enabling a
homogeneous distribution of the
air/fuel mixture and, therefore,
effective combustion.

Depending on throt tle input, mul
-
tiple fuel injection takes place.
DFI improves the internal cooling
of the combustion chamber by
preparing the mixture directly in
the cylinder. The resulting higher
compression ratio (12.5:1) helps
to deliver more power along with enhanced engine ef ficiency.
Translated into figures, this
means, when compared with the
previous model, a reduction in
fuel consumption of up to 15
%,
depending on the t ype of trans -
mission, and up to 16 % fewer
CO
2 emissions. Injection is regu -
lated by the electronic engine
management system.

The exhaust gas cleaning system
ensures that emissions remain
well below the strict limits of the
Euro 5 European emission stand -
ard, thus helping to protect the
environment.
Boxster | Drive

· 30 ·· 31 ·
1
2
3
4
56
78
9
1011
12
13
14
15
1617
19
20
21
18
20
Boxster | Drive
3.4-litre six-cylinder Boxer engine in the Boxster S
1. High pressure pump
2. High pressure injector
3. Ignition rod module
4. Camshaft controller
5. Tappets with integral valve
play compensation
6. Inlet camshaft
7. Inlet valve
8. Valve spring
9. Combustion chamber with
Alusil running surface 1 0 .
Forged aluminium pistons
11. Forged connecting rod
12. Crankshaft
13. Water pump

14. Vibration damper
15. Resonance valve
16.
Twin flow valve

17.
Intake distributor with
integral acoustic volume

18. Vacuum pump
19. Cooling jacket
20. Crankshaft breather
21. Timing chain
200
180
280 300
320
340
360 380 400
420 40
20
60 80
100 120 140 160 180 200 220 240
260
1500
7500
2000 25003000 3500400045005000 5500600065007000 220 240 260 1000
360 Nm
280
440

Power (kW)
Engine speed (rpm)
Torque (Nm)
228 kW (310 hp)
200
180
280 300
320 340 360 380 400 420
220 240
260
44040
20
60 80
100 120 140 160 180 200 220 240 260
1500
7500
2000 25003000 3500400045005000 55006000650070001000
290 Nm
280

Power (kW)
Engine speed (rpm)
Torque (Nm)
188 kW (255 hp)
Boxster: 290 Nm between 4,400 and 6,000 rpm, 188 kW (255 hp) at 6,400 rpm
Boxster S: 360 Nm between 4,400 and 5,500 rpm, 228 kW (310 hp) at 6,400 rpm

· 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

· 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