190D 2.5 (201.126) L5-2.5L DSL (602.911) (1987)
Fluid Pump: Description and Operation
General
Hydraulic energy is required for controlling the automatic transmission.
This energy is produced by the oil pumps installed in the transmission in the form of a pressurized oil flow and pumped to the valve body
assembly.
The valve body assembly also receives the information supplied to the transmission from outside:
-
selector level position
-
mode selector switch
-
accelerator pedal position (control pressure)
-
engine torque
(via intake manifold vacuum)
-
kick-down
-
vehicle-speed
In line with the operating state, the oil flow is branched to the various points of demand in the transmission and the quantity and pressure level
adapted to requirements.