Recuperation.
To do this, the engine management system adjusts the
Porsche Ceramic Composite Brake (PCCB).
The electronic engine
generator current depending
management system on
on the brake pedal position,
Available as an option on all new
the new Cayenne S Hybrid
recovers as much of the kinetic
Cayenne models, the Porsche
controls the braking process
energy as possible and stores
Ceramic Composite Brake
so that when the brake pedal
it in the battery. When the
(PCCB) has already proven its
is actuated, as much expended
pressure on the brake pedal
ability to cope with the harshest
energy as possible can be
exceeds a certain threshold,
requirements of the racetrack.
harnessed by the electric motor
the brakes are applied.
It is available in conjunction
generator mode and stored
with 20-inch wheels or larger
in the 288-volt nickel-metal
for the Cayenne Turbo and with
hydride (NiMH) battery. This is
19-inch wheels or larger for
referred to as recuperation.
all other Cayenne models. The cross-drilled discs are
Even at high temperatures,
Excellent fade resistance
generously proportioned: On
the thermal resistance of the
ensures greater balance when
the Cayenne Turbo they have a
PCCB disc ensures outstanding
slowing from high speed.
diameter of 16.14 inches at the
dimensional stability. The ceramic
front and 14.57 inches at the
material is completely resistant
The key advantage of PCCB
rear, while on all other models
to corrosion and offers excellent
is a total weight savings of
they measure 15.35 inches and
acoustic damping properties.
approximately 50 percent
14.57 inches, respectively.
compared with that of equivalent PCCB enables shorter braking
cast-iron discs. By lightening the
The discs are made from a
distances. The pedal response
unsprung and rotating masses,
specially treated carbon-fiber
is fast and precise with only
you increase the handling
compound that is silicated
moderate input required.
agility and ride comfort, and
in a high-vacuum process at
reduce fuel consumption.
over 3,000°F. The resulting material is not only much
Optional for all Cayenne models.
harder than cast iron—it is also more resistant to heat.
Porsche Ceramic Composite Brake (PCCB)
54 · Safety and environment | Safety
Safety and environment | Safety · 55