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The graph below shows the pedal load measurement
on a popular car application using a 228 mm HEC
clutch. The pedal load is measured with a new clutch
and at the end of the clutch life.
The pedal load remains at the desired level both
in new clutch (approx. 9 kg) and in a worn clutch
(11 kg) to provide constant driving comfort.
Pedal load with H.E.C.
1
0
2
1
0 3
Max load at wear reduction
Load (N)
Travel (mm)
Low load variation
Reduction facing wear
Low displacement
Disengaged
At wear
0 : max load engaged (at new)
1 : Max load engaged (at wear)
2 : Diaphragm free position
3 : Disengaged position
Disengage Point
Engage Point
Pedal travel (mm)
Pedal load (N)
160
140
120
100
80
60
40
20
0
0
20
40
60
80
100
120
140
160
Pedal load at new
Pedal load at wear
Max load 109,88N
Max load 87,52N
H.E.C. - Change in pedal load