Technical data

36
allroad quattro
Clutch mechanism
Clutch line with PTL valve
Due to the powerful torque of the engines in
conjunction with the torque increase caused
by the additional shift stage, the drive train
must be protected against incorrect
operation when engaging the clutch.
241_022
A PTL valve is therefore integrated into the
clutch line in the allroad quattro with
additional shift stage.
Its purpose is to prevent abrupt clutch
engagement when the clutch pedal is
released suddenly and thereby reduce the
magnitude of torque peaks.
Clutch line
PTL valve
Section of PTL valve
PTL stands for
P eak
T orque
L imiter.
i.e. limiting sudden torque peaks.