Self-Study Program

25
In order to close the clutch, oil pressure is admitted
into the clutch cylinder chamber. The clutch piston
compresses the clutch plate assembly, and the
clutch engages when the required oil pressure is
reached. If the clutch cylinder chamber is pressure-
less, the clutch piston is forced back into its initial
position by spring pressure (in this case, by multiple
coil springs). A clearance is maintained between
the clutch piston and the clutch plate assembly in
order to minimise friction when the clutch is open.
In order to match transmission efficiency to the
engine as best possible, the number of clutch plates
is adapted to the engine power output. Drag losses
of open clutches are thus kept to a minimum.
high 0
Oil pressure
Clutch K2 - closed
Clutch plates/clutch plate assembly
Clutch piston
Clutch cylinder chamber
Coil spring
Shift pressure
Lube oil
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