Technical data

17
8
Signals and parameters
Gear recognition
The engaged gear is determined in a
contactless arrangement by means of the Hall
sensors on the actuators of the
individual selector rods. The position of the
working pistons is detected.
Reversing light
The redundant sensor system of the 1/R
selector rod detects reverse gear when
engaged and correspondingly informs the
transmission control.
The transmission control informs the lights
switching centre that reverse gear is engaged.
Gearbox oil temperature
The gearbox oil temperature is determined
indirectly via the hydraulic oil temperature
sensor as both temperatures have a linear
deviation with respect to each other.
The SMG control unit uses this temperature
value to operate the electric gear oil pump.
Input speed
The gearbox input speed is determined by a
sensor. This sensor acquires the speed at the
tooth flanks of the gear wheel on the
countershaft.
Clutch slave cylinder
The clutch slave cylinder consists of two
pistons and a spring between the two piston
elements. The second piston is moved
hydraulically. The second piston makes it
possible to bleed the clutch slave cylinder in
installed position without having to open any
screws.
A PLCD sensor (Permanentmagnetic Linear
Contactless Displacement) is arranged
separately in the housing of the clutch slave
cylinder. This sensor determines the exact
position of the release piston.
3 - Clutch slave cylinder
Index Explanation Index Explanation
1 Housing of clutch slave cylinder 3 PLCD sensor
2 Pistons