Diesel Injection Pump Control Rod Position Sensor: Description and Operation

The control rod travel sensor, located in the governor of the injection pump, consists of an iron core, two coils, and two bypass rings. It is connected to the electronic control unit via a three pole plug.
The coils are attached to the iron core fixed housing. The short circuit ring, which is connected with the control rod, displaces the iron core free of contact with rod on lower leg of the iron core. The fixed value coil and the short circuit ring are connected to the upper leg.