Control solenoid valve component description - GF27.19-P-5147CWB

TRANSMISSION 722.9 in MODEL 204.0 up to Model Year 8

Adjustment solenoid clutch control K1

Fig 1: Identifying Control Solenoid Valve Components (K1)

Courtesy of MERCEDES-BENZ USA

Location

The clutch control solenoid valve K1 is mounted on the fully integrated transmission control controller unit.

Task

The clutch control solenoid valve K1 is actuated by the fully integrated transmission control unit and influences the position of the regulating valve K1. The pressure in the multidisk clutch K1 depends on the position of the regulating valve and therefore on the geometry of the regulating valve K1. The clutch control solenoid valve K1 has a rising characteristic.

This means that the oil pressure applied in the K1 regulating valve increases as the actuation current increases. In limp-home mode of the fully integrated transmission control (VGS) all the control solenoid valves are de-energized. The clutch control solenoid valve K1 thus supplies no pressure.

Body

In the clutch control solenoid valve K1, a proportional solenoid converts the electrical signals from the fully integrated transmission control unit. The float needle can also be moved into intermediate positions as a result.

Function

The clutch control solenoid valve K1 assigns a proportional pressure to the current which is controlled by the fully integrated transmission control unit.