air conditioning PORSCHE BOXSTER S 2010 2.G Information Manual

· 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.

· 38 ·· 39 ·
Exhaust system.
The exhaust system – with t win
tailpipes on the Boxster 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

circuitry controls and monitors
each cylinder bank separately.
For each exhaust tract, four
corresponding oxygen sensors regulate the composition of the
exhaust gas and monitor the con
-
version of pollutants in the cata -
ly tic converters.
A sports exhaust system – for a
more resonant sound – is avail -
able as an option for each of the
Boxster models.
Boxster | Drive
Servicing.
Every Porsche is designed with
durabilit y in mind. On the Boxster
models, this is reflected in the
lengthy service intervals. The alternator, power steering
pump and the air- conditioning
compressor are all driven by a
single self-adjusting belt. The
drive chains on the camshafts
and intermediate shaf ts do not
normally require servicing. With the sole exception of the
spark plugs, the ignition system
is also maintenance-free.
So your Boxster remains where
it belongs for as long as possible:
on the road.
Boxster S exhaust system
Boxster S twin tailpipe
Boxster tailpipe

· 76 ·· 77 ·
Air conditioning.
As standard, both Boxster models
come with a quiet, efficient
air- conditioning system. Optional
climate control, with solar and
temperature sensors, ensures
even more consistent control
over the interior temperature.
Cruise control.
This optional automatic speed
controller for the 30 to 240 km/ h
(19–149 mph) range is operated
using a switch on a separate con -
trol stalk on the steering column.
Storage compartments.
The Boxster’s cleverly designed
storage compartments of fer
plent y of space, such as those in
the front centre console or the lockable glove compartment
(includes CD storage on vehicles
with optional sound system).

The storage box on the rear bulk -
head of fers additional loadspace
(except on vehicles with optional
BOSE® Surround Sound System)
along with space in the rear
centre console. Other practical
features include storage com -
partments in the doors, coat
hooks on the back of each seat
and t wo retractable cup holders
above the glove compartment.
Boxster | Comfort
‘Welcome Home’ lighting.
When the vehicle is opened or
locked using the key remote, the
standard automatic locator light -
ing switches on automatically.
This is particularly convenient at
night. In conjunction with the
optional PCM (p. 83) and Sport
Chrono Package Plus (p. 57), the
delayed lighting switch - of f period
can be adjusted as desired.
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.
Windscreen wipers.
The windscreen wipers with
an adjustable intermit tent wipe
speed are aerodynamic and
inconspicuous. The windscreen
washer system has t wo heated
and filtered nozzles. An inte -
grated rain sensor is available
as an option (in conjunction
with auto -dimming mirrors).
Climate control Cruise controlCup holder