Porsche Cayenne User Handbook

76 · Safety and environment | Environment
Exhaust emissions.
The Cayenne models are all equipped
with the latest emissions technology. As
a result, they comply with the European
exhaust emissions standard, EU 5.
Whatever the class, every Porsche
combines high performance with com-
paratively moderate emissions. On the
Cayenne models, this is achieved using
advanced drive concepts – from petrol
and diesel engines to our parallel full
hybrid drive. This is further aided by the
rapid warm-up cycle of the catalytic
converters. The optimum operating tem-
perature is reached earlier so emissions
are reduced sooner when starting from
cold.
On the petrol-engined and hybrid models,
another important feature is the use of
twin oxygen-sensor circuits. Each bank of
cylinders has a separate control system
which the engine management system
uses to establish the optimum amount of
fuel – for effective emissions control.
The exhaust-gas recirculation on the
Cayenne Diesel routes part of the
exhaust gas back into the combustion
process, resulting in lower peak com-
bustion temperature and therefore lower
nitrogen oxide emissions. An oxidation
catalyst also forms an integral part
of the process along with a diesel par-
ticulate filter.
Porsche engines.
Performing for today – and the future.
For fuel consumption, CO
2
emissions and efficiency class data, please refer to pages
150/151.

Porsche Cayenne Specifications

General

Brand	Porsche
Model	Cayenne
Category	Automobile
Language	English