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4.
MULTIPLE-DISC CLUTCH INCLUDING OPERATION - POWER TRAIN
The engine torque is applied to the input shaft (36) in the specified
direction
of
rotation
and,
IN
SHIFTING POSITION
A
(forward),
via
gear (44),
the frictionally engaged clutch discs
(51 and 52)
to the
external disc carrier (57)
and from there via the guide sleeve (59)
to the output shaft (66).
IN SHIFTING POSITION B (reverse), the
input
shaft (36)
via
intermediate
discs (51
and
52)
to
the
external
sleeve (59) and the output shaft (66).
- FUNCTION
torque is transmitted from the
gear (26),
gear (65),
clutch
disc
carrier (57),
the
guide
The
transmission
uses
a
positively
driven,
mechanically
operated
multiple-disc clutch system mounted on the output shaft.
The thrust force required for obtaining positive frictional engagement
between the clutch discs is provided by a servo system.
This essen-
tially compr ises a number of balls which, by the rotary movement of
the external disc carrier,
are urged against inclined surfaces pro-
vided
in
pockets
between
the
guide
sleeve
and
the
external
disc
carrier
and
in this manner exert axial pressure.
The thrust force
and, as a result, the transmittable friction torque are thus propor-
tional to the input torque applied.
Due to the cup springs (48) sup-
porting the clutch disc stack and a limitation of the range of axial
travel
of
the
external disc carrier (57),
the
thrust
force
cannot
exceed a predetermined value.
115
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