GF27.19-P-1113AHI Output Shaft RPM Sensor, Component Description

GF27.19-P-1113AHI Output shaft rpm sensor, component description
- TRANSMISSION 722.930

Component Identification:

Location
The output speed sensor (VGS) is integrated in the electric controller unit (VGS).

Task
The output speed sensor (VGS) detects the transmission output speed at the park pawl gear for the fully integrated transmission control.
This is processed by the fully integrated transmission control unit (VGS) (Y3/8n4) as an input signal together with the information from the turbine speed sensor (VGS) and the internal speed sensor (VGS). This contributes to shortening the reaction time during shift operations.

Design
The output speed sensor (VGS) is firmly fixed to the electric controller unit (VGS) and cannot be replaced individually.

Function
The transmission output speed is recorded using a pulse ring and a Hall difference sensor. This increases the measuring accuracy. 2 Hall generators and a bar magnet are integrated into the output shaft speed sensor. Magnetic field changes occur due to the rotary motion of the pulse ring. As a result an induction difference arises between the two Hall elements of the Hall generators which changes its polarity due to the rotary motion.

This polarity change is converted into an rpm signal by the electronic analysis system and evaluated by the fully integrated transmission control (VGS) control unit.