Electrohydraulic control unit
The electrohydraulic control unit
The electrohydraulic control unit is integrated into the mechatronic module. It generates the oil pressure which is
required to shift the gears and to actuate the clutches.
Oil pressure generation and control
The oil pressure is generated by the hydraulic pump's motor.
An oil pressure accumulator ensures that sufficient oil pressure is always present at the solenoid valves.
lk
Oil pressure
accumulator
Electrohydraulic control unit
Hydraulic pump
To clutch K1
To clutch K2
Valve 2 in gear train
half 2 N438
Gear selector valve 6/R
Valve 3 in gear train
half 1 N435
Clutch valve K1
Valve 4 in gear train
half 2 N440
Gear train half
Pressure regulator
Valve 2 in gear train
half 1 N434
Gear selector valve 5/7
Gear selector valve
Valve 3 in gear train
half 2 N439
Clutch valve K2
Valve 4 in gear train
half 1 N436
Gear train half
Pressure regulator
Valve 1 in gear train
half 2 N437
Gear selector valve 2/4
Valve 1 in gear train
half 1 N433
Gear selector valve 1/3
S390_043
Motor for
hydraulic pump V401
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