Porsche 911 Carrera 4 Brochure & Specs page 63

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