· 37 · · 36 ·
The 911 GT2 |Drive
benefits, such as optimum econ-
omy, emissions and performance
in all driving scenarios.
One of the most important tasks
performed by the engine manage-
ment system is cylinder-specific
knock control. By preventing pre-
ignition at high engine speeds
and loads, this function can avert
costly damage to the pistons and
cylinders. Since temperatures
tend to vary across the engine,
each cylinder is monitoredseparately. If a risk is detected,
the individual ignition timing is
adjusted.
The on-board diagnostics system,
designed to European standard,
quickly detects any faults in the
exhaust and fuel system and
displays them during driving
via the car’s instruments. The
benefits include active prevention
of harmful emissions as well
as consistent rates of fuel con-
sumption.Input data Used to regulate /control
Digital engine electronics
(ME7.8.1 control unit)
Engine load
Pressure upstream from throttle
Throttle-valve angle
Engine speed (from crankshaft)
Inlet camshaft phase angle
Throttle-pedal position
Oxygen sensor signals
Knock sensor signals
Ignition
Fuel injection
Throttle valve
Heating elements in oxygen sensors
Fuel pump
Fuel-tank venting
CAN interface to transmissionMoment interface to Porsche
Stability Management (PSM)
VarioCam Plus
– camshaft phase angle
– valve lift control
Electronic controller for
Variable Turbine Geometry (VTG)
Recirculation valve
Secondary air injection
Engine-bay fan
Starter
On-board diagnostics
Air-conditioning compressor
Interface to instrument cluster
Radiator fans (front control unit via CAN)
Vehicle speed
Air-conditioning settings
Engine immobiliser status
Clutch pedal switch
Ambient air pressure
Temperatures
– coolant
– air upstream from throttle
– engine oil
– air in engine compartment
– ambient air
Exhaust-gas temperature
Engine management system.
The Motronic ME7.8.1 engine
management system facilitates
optimum performance at all
times. This high-precision ECU
controls all engine-related func-
tions and assemblies (see
dia-
gram), such as Variable Turbine
Geometry, VarioCam Plus and
the electronic throttle, one of the
key prerequisites for the standard
Porsche Stability Management
(PSM). This produces various
· 69 · · 68 ·
The 911 GT2 |Comfort
the rev counter. A centrally placed,
clearly visible arrow indicates the
latest time to change gear.
On-board computer.
The integral on-board computer
gives information on boost pres-
sure, average fuel consumption,
speed, remaining distance andexterior temperature. It can also
be used to view data from the
standard Tyre Pressure Monitoring
(TPM) as well as the timing system
featured in the optional Chrono
Package Plus (see page 75).
The computer is operated using
a control stalk on the steering col-
umn, with information displayed in
the instrument cluster.
Instruments.
The sporting credentials of the
911 GT2 refer not only to engine
and chassis, it also boasts a sporty
interior designed around the driver.A car like the 911 GT2 requires
an ergonomically efficient driving
environment with unhindered
access to all key information.
Clearly visible at the centre of
the cluster of five instruments is a large rev counter with GT2
logo and titanium-coloured dial.
The needles and markings in the
instrument cluster are yellow.
For optimum acceleration, you
can view the upshift display in Other standard features include
automatic air conditioning with
active carbon filter.
We’ve demanded your respect. Now have ours.
Interior.
