SMART Series 451 Service Manual page 64

SN_Typ 451_us.book Seite 63 Freitag, 30. November 2007 1:56 13
Clutch motor
General
Model 451 is fitted with a 5-speed automated manual
transmission. This means that a single-plate dry
clutch is installed instead of the torque converter that
is usual with conventional automatic transmissions.
The single-plate dry clutch is actuated by the clutch
motor.
4 Electric motor
5 Electric motor connector
6 Actuating plunger
Function
When the automated manual transmission control unit
issues a request for a gear change, the clutch motor
is actuated at the same time. The electric motor inte-
grated in the clutch motor operates the clutch via the
actuating plunger. The power flow is interrupted and
the shift operation can be performed.
M18
Introduction of the smart fortwo, Model Series 451
Clutch motor
Clutch
P25.19-2010-00
63