GF27.19-P-5181AHI Start-Up Clutch Control Solenoid Valve, Component Description

GF27.19-P-5181AHI Start-up clutch control solenoid valve, component description
- TRANSMISSION 722.930

Component Identification:

Location
The start-up clutch control solenoid valve is positioned on the electric controller unit (VGS).

Task
The start-up clutch control solenoid valve is actuated by the fully integrated transmission control unit (VGS) and influences the position of the start-up clutch regulating valve. The clutch pressure in the start-up clutch depends on the regulating valve position and thus on the geometry of the start-up clutch regulating valve. The start-up clutch control solenoid valve has a rising characteristic. This means that the oil pressure applied in the start-up clutch regulating valve is increased as the actuation current rises. In limp-home mode of the fully integrated transmission control all the control solenoid valves are de-energized. The start-up clutch control solenoid valve therefore does not supply any pressure.

Function
With the start-up clutch control solenoid valve a proportional solenoid converts the electrical signals of the fully integrated transmission control unit (VGS). The float needle can also be moved into intermediate positions as a result.

The start-up clutch control solenoid valve assigns a proportional pressure to a current regulated by the fully integrated transmission control unit (VGS).