Porsche PANAMERA 4S Brochure page 43

The stereo lambda control intelligent lightweight construc-
circuitry controls and monitors tion. For both economical and
each cylinder bank separately. ecological reasons. This forms
For each exhaust tract, oxygen the basis for low fuel consump-
sensors regulate the composition tion values in conjunction
of the exhaust gas, while another with outstanding performance.
lambda sensor on each cylinder
bank monitors pollutant conver- It is economical thanks to the
sion in the respective catalytic high proportion of aluminium cast
converter.* alloys, plastics and super-high-
strength sheet steel used. This
Exhaust gas cleaning is is substantially more stable and
supported by an air injection lighter than conventional steel.
system. A compressor pumps The new Panamera models have
extra air into the exhaust tract a bodyshell with a lightweight-
during the catalytic converter metal content of 23%. For exam-
warm-up phase for faster heating ple, the bonnet, doors, wings and
and, therefore, lower emissions. rear lid are made of aluminium,
which saves on weight and has
The auto start/stop function is a positive effect on the environ-
another measure for reducing mental balance: according to eco
fuel consumption. balance sheets, the extra energy
used and the higher emissions
incurred in the manufacturing of
Lightweight construction
aluminium are more than compen-
and recycling.
sated by the savings on fuel after
only a relatively short distance.
A fundamental objective in the
development of any Porsche is It is also responsible because all
materials used are meticulously
* Not in markets with leaded fuel.
selected. We use only innovative
and environmentally friendly
components.
All lightweight materials are easily
recyclable and each material is
labelled to facilitate its separation
for recycling. The reduction in
the number of plastic variants
helps to ensure more efficient
recycling. Recycled plastics
are used where they meet our
exacting technical requirements.
In all, the Panamera is approxi-
mately 85% recyclable.
In addition, Porsche uses only
environmentally friendly water-
based paints, thus reducing
the need for solvents both in pro-
duction and in the workshop.
The Panamera is also absolutely
free of asbestos, CFCs and
components manufactured using
CFCs because, here at Porsche,
environmental protection does
not begin at the end of a vehicle's
life. It starts at the planning and
development stage.
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Balance
| Environment
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