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Driving and Driving Safety
211
Porsche Traction Management (PTM)
Porsche Traction Management is a full-time all-
wheel control system designed to influence the
longitudinal and lateral dynamics. It is closely lin-
ked with the Porsche Stability Management (PSM)
system:
PTM ensures the best possible power distribution
to the four driven wheels at the front and rear ax-
les. The system realises this optimal traction by in-
tervening in the lock control function of the trans-
fer case and rear differential. PTM is active at all
times and, unlike the PSM, cannot be switched off.
Advantages of PTM
– Obvious improvement in traction, driving stabi-
lity and steering ability of the car.
– Vehicle is more manageable when driven at its
performance limits.
– Improved straight-ahead tracking and stability.
– The aforementioned features allow for a sport-
ier setup of the running gear.
– The TCS and ABD provide even better traction
for all wheels.
Warning!
In spite of the advantages of PTM, it is still the dri-
ver’s responsibility to adapt her/his driving style
and maneuvers in line with road and weather con-
ditions, as well as the traffic situation.
The increased safety that is provided should not in-
duce you to take greater risks with your safety.
The limits set by the physics of driving cannot be
overcome, even with PTM.
Risks of accident due to inappropriate speed
cannot be reduced by PTM.
Full-time all-wheel drive
With the four-wheel drive, the drive power is vari-
ably distributed to the front and rear wheels.
Power distribution and wheel speed compensation
between the front and rear axles is realised with a
transfer box.
Distribution of the drive power depends on the
wheel speed difference between the two axles.
The transfer box always controls power distributi-
on in such a way that optimal propulsion is achie-
ved, even on an unfavorable road surface.
Full-time four-wheel drive ensures optimal handling
and great stability.
Warning!
In spite of the advantages of four-wheel drive, it is
still the driver’s responsibility to adapt her/his dri-
ving style and maneuvers in line with road and
weather conditions, as well as the traffic situation.
The increased safety that is provided should not in-
duce you to take greater risks with your safety.
The limits set by the physics of driving cannot be
overcome, even with four-wheel drive.
Risks of accident due to inappropriate speed can-
not be reduced by four-wheel drive.
Содержание 2007 Cayenne
Страница 9: ...9...
Страница 20: ...20 Table of Contents...
Страница 137: ...Multi Purpose Display and Instruments 137...
Страница 139: ...Multi Purpose Display and Instruments 139...
Страница 261: ...Trailer Hitch 261 Trailer Hitch Trailer Coupling 262 Loading Information 263...
Страница 268: ...268 Parking Parking Parking Aids 269 Swivelling down mirror glass as parking aid 273 Garage Door Opener 274...
Страница 414: ...414 Tire Pressure and Technical Data...