Porsche Cayman User Handbook Manual page 44

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Exhaust emission control. Noise.
Four-valve cylinder heads and The Cayman and Cayman S comply
VarioCam Plus ensure minimal with all current noise regulations
emissions at source. After leaving without any form of engine
the engine, the gases are cleaned encapsulation. To do that, we've
by a system of four catalytic eliminated noise at source in
converters and four 'Lambda' or every area of each car. Engine
oxygen sensors. Controlling it components are rigid, moving
all with optimum efficiency is parts are light, and tolerances
the Motronic ME7.8 engine have been reduced to a minimum.
management system. Each bank The result is a pure and distinctive
of cylinders has its own Lambda sound – with all the character
circuit, enabling precision you'd expect from a Porsche.
adjustment of the air/fuel mix.
Each exhaust tract has two
Lambda sensors, one upstream Fuel system.
and one downstream of the
primary catalyst.* The resulting All fuel lines are made from robust
benefits include full compliance aluminium, while those carrying
with both the EU4 emissions vapours are multi-layer plastic. The
standard and ULEV II regulations result is a significant reduction in
in the United States, as well as the evaporation of hydrocarbons.
excellent fuel economy.
* Not featured in markets with leaded fuel.
Materials and recycling.
All structural components,
switchgear and trim are made
from fully recyclable materials.
Better still, it is highly unlikely
that they will ever need recycling
at all. Long-term durability is,
after all, one of the defining
qualities of every Porsche car.
A key objective during the
development process was all-
round weight reduction. This was
achieved using cast aluminium
alloys, synthetic materials and
high-tensile metals. Used correctly,
this blend of materials is both
stronger and lighter than
conventional steel. As well as
reducing fuel consumption, it
offers positive environmental
benefits.
Approximately 85 % of all com-
ponents can already be recycled
using today's technology. This
proportion is set to increase as
· 90 ·
new thermal methods are Servicing.
introduced. To simplify recycling,
all synthetic components are Longer service intervals are not
clearly labelled in accordance only more convenient for you, they
with the relevant standards. are also better for the environment.
With the new Cayman and
Both Cayman models are entirely Cayman S, we have achieved
free of CFCs and components very modest servicing
manufactured with the aid of requirements: engine oil every
these chemicals. Water-based 20,000 miles (or two years),
paints are used throughout each oil filter every 20,000 miles, air
car, thereby reducing the need filter every 40,000 miles, spark
for chemical solvents during the plugs every 60,000 miles (or
production process. four years), and brake fluid every
two years.
The new Cayman and the Cayman S |
In addition to the obvious
environmental benefits, the
advantage for you is two-fold: a
lower cost of ownership throughout
the life of the car, and more time
spent on the road. Based on
mileage alone, the new Cayman
models require just three stops
for servicing every 60,000 miles,
or one service every two years.
· 91 ·
Environment
Cayman