Transmission - Porsche PANAMERA 4S Brochure

You always like to have your feet firmly planted on the ground.
With all-wheel-drive, the principle is the same.
Porsche Traction Management (PTM).
Fitted as standard in the new The electronically controlled
Panamera 4S and Panamera multi-plate clutch regulates the
Turbo, intelligent Porsche Traction distribution of drive force
Management (PTM) comprises between the permanently driven
an active all-wheel drive with rear axle and the front axle.
an electronically mapped multi-
plate clutch, an automatic brake Through continuous monitoring
differential (ABD) and anti-slip of the driving conditions, the
regulation (ASR). electronics are able to respond
to a variety of situations. Sensors
check, among other variables,
the rotation speeds of all four
wheels, the longitudinal and
lateral acceleration of the
vehicle, and the steering angle.
If the rear wheels threaten to
spin under acceleration, a greater
proportion of drive force is
distributed to the front by a more
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powerful engagement of the In this way, PTM, in conjunction
multi-plate clutch. In addition, with Porsche Stability Manage-
ASR reduces wheel slip. When ment (PSM, p. 70), ensures that
cornering, the front wheels only the perfect distribution of drive
ever receive as much drive is achieved every time: whether
force as is necessary to maintain on long straights, through tight
optimum lateral stability. corners, or on surfaces with
different friction coefficients.
In this situation, traction is
Performance

| Transmission

All-wheel drive
additionally enhanced by the
automatic brake differential
(ABD). Whenever the brake con-
trol systems are required to
intervene, PTM decouples the
front axle completely so that
PSM inter ventions can take place
at each individual wheel.
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