The 911 | Environment
911 Carrera 4 Cabriolet
In the concept behind the 911, the source of its appeal
is the achievement of harmony.
Harmony with the environment as well.
In an era of intensifying debate
about CO
2
emissions, every
automotive manufacturer is being
asked the question, ‘What is
your answer to the issue of fuel
consumption?’ Our answer has
long been the same: maximum
efficiency.
Porsche has been reducing the
CO
2
emissions of its vehicles
annually by an average of 1.7 %.
As far as engine output is con-
cerned, we are already among
those manufacturers achieving
the lowest CO
2
emissions. This
has been achieved through the
efficient drive concept (DFI),
lightweight construction, optimum
aerodynamics and low rolling
resistance.
This high level of environmental
responsibility is clearly demon-
strated by our approach to
environmental management at the
Porsche development centre in
Weissach. Here, all technological
developments are carried out with
environmental protection in mind.
The goal? Pure performance –
but not at the expense of the
environment. The result? The 911.
You will find more information
in our separate brochure,
‘Porsche and the Environment’,
or at www.porsche.com.
Exhaust emission control.
Both 911 engines comply with
stringent emission standards, in-
cluding Euro 5 in Europe and LEV II
in the USA. Vehicles manufactured
by Porsche demonstrate that even
high-performance sportscars can
achieve moderate emission values
in their respective category.
Indeed, not only is the 911 one of
the most exciting cars around, it
is also one of the cleanest.
This is achieved through the use
of a two-stage cascade-type cata-
lytic converter which comprises
two monolith substrates on
each of the twin exhaust tracts.
These specially coated substrates
contain ultra-fine honeycomb
channels in which pollutants are
converted as exhaust gas passes
through. The stereo lambda
control circuitry controls and
monitors each cylinder bank
separately, while another lambda
sensor on each cylinder bank
monitors pollutant conversion in
the respective catalytic converter
(p. 49).*
Fuel economy and recycling.
At Porsche, a fundamental aspect
of design is intelligent lightweight
construction. For both economical
and ecological reasons. This
forms the basis for low fuel
consumption values in conjunction
with outstanding performance.
It is economical thanks to the
high proportion of aluminium cast
alloys, magnesium, plastics and
super high-strength sheet steel
used. This is substantially more
stable and lighter than conven-
tional steel. In the 911 models
approximately 20 % of compo-
nents are made from lightweight
alloys.
It is also ecological because all
materials used are meticulously
selected. We use only innovative
and environmentally friendly com-
ponents. 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 plas-
tics are used where they meet our
exacting technical requirements.
In all, the current 911 is
approximately 85 % recyclable.
In addition, Porsche primarily
uses environmentally friendly
water-based paints. The 911 is
absolutely free of asbestos, CFCs
and components manufactured
using CFCs. This is 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.
*
Not in countries with leaded fuel.
