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The 911 | Transmission
911 Carrera S Cabriolet
In addition, all 911 models have
a self-adj usting clutch. In
compa rison with conventional
clutches, this reduces by up to
50 perc ent the added release
loads that nor ma lly occur as
the clutch begins to wear.
Hill Start Assist.
Hill Start Assist comes as
standard fo r manual and
Porsche Doppelkupplung
(PDK) transmissions. It
assists the driver in making
a comfortable, smooth and
roll-free start on an incline.
The system automatically detects
i f the vehicle h as been braked to
a halt on an incline. Provided
a gear i s engaged, the brake
pressure is maintained at all
four wheels for approximately
tw o seconds once the footbrake
is released. The vehicle is,
therefore, temporarily prevented
from rolling backward. This
brake pres sure is reduced
once sufficient revs
have
been generated by the
driver
depressing the accelerator
pedal (or, in th e case of
manual transmission, the
accelerator
pedal is depressed
and the clutch is released).
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