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

TRANSMISSION 722.9 in MODEL 164.1/8, 216, 221, 251.0/1 up to Model Year 8

Regelmagnetventil Arbeitsdruck

Fig 1: Locating Control Solenoid Valve

Courtesy of MERCEDES-BENZ USA

Location

The working pressure control solenoid valve (VGS) is mounted on the electric control unit (VGS).

Fig 2: Locating Working Pressure Control Solenoid Valve

Courtesy of MERCEDES-BENZ USA

The working pressure control solenoid valve (VGS) is actuated by the fully integrated transmission control (VGS) control unit and influences the position of the working pressure regulating valve. The working pressure depends on the regulating valve position and thus on the geometry of the working pressure regulating valve. The working pressure control solenoid valve (VGS) has a lowering characteristic.

This means that the oil pressure applied in the working pressure regulating valve reduces as the actuating current increases. In limp-home mode of the fully integrated transmission control (VGS) all the control solenoid valves are de-energized. The working pressure control solenoid valve (VGS) thus supplies maximum pressure.

Body

In the working pressure control solenoid valve (VGS) a proportional solenoid converts the electrical signals from the fully integrated transmission control (VGS) control unit (Y3/8n4). The float needle can also be moved into intermediate positions as a result.

Function

The working pressure control solenoid valve (VGS) assigns a proportional pressure to the current which is controlled by the fully integrated transmission control (VGS) control unit.