Porsche Cayenne User Handbook

32 · Drive systems and chassis | Drive systems
E-power button.
The ‘e-power’ button can be used to
expand the range in which the vehicle
can be run solely on electric power,
when heading out of a residential area,
for instance. The throttle map is adapted
so that the combustion engine is en-
gaged later than in ‘Normal’ mode de-
pending on performance requirements.
This is activated via a button on the
centre console.
Battery.
The hybrid system features a high-
voltage nickel metal hydride (NiMH) bat-
tery consisting of 240 cells. It provides
the electric machine with the energy
required for the vehicle to drive short
distances solely on electric power.
The compact battery is located under
the loadspace floor in the luggage
compartment. Weighing approximately
80 kg, its dimensions are 426 mm x
925 mm x 286 mm.
The battery is designed to last without
the need for any maintenance throughout
its entire life. As the electric machine
also functions as a generator, it can
charge the battery under certain condi-
tions when the combustion engine is in
part-throttle mode and through energy
recovery during braking. A special battery
management and cooling system main-
tains a constant temperature and
protects the battery from overheating.
It also monitors the charge/discharge
processes. As a result, the life of the
battery is optimised and its suitability
for everyday use ensured, while offering
a high capacity: 1.7 kWh.
Systems that are usually dependent on
the output provided by the combustion
engine, such as climate control, power
steering and brake assist, run solely
on electricity on the Cayenne S Hybrid.
As they do not rely on output from the
engine, these functions remain active
when the car is running in electric mode
or when it is ‘coasting’ or gliding along
with the engine turned off.
In summary: despite its six-cylinder
powerplant, the Cayenne S Hybrid offers
performance levels that are comparable
with an eight-cylinder unit – but with
significantly lower fuel consumption. Also
when it comes to hybrid drives, we’ve
taken a completely new path. Hardly
surprising really, with a technology this
convincing.
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