Component description Injection pump The EDC injection pump consists of a heavy-duty version of a conventional injection stage of the well-known Bosch P-pumps and, instead of the mechanical regulator, a flange-mounted electromagnetic fuel-delivery regulator with a control rod position trans- ducer. Electromagnetic fuel-delivery regulator Description: The fuel-delivery regulator operates in conjunction with the P-pump. The most important component part of the fuel-delivery controller is a linear solenoid in which the armature acts directly on the control rod thus determining the injection volume by means of the control position.
When no power is applied, the control rod is held in the stop position by means of a spring. The other important component in the controller is a control rod position transducer. Injection pump Control rod Control rod position transducer Fuel-delivery regulator (linear solenoid) Fuel-delivery regulator Control rod position transducer 3 4 5 2 8 6 1 7 Plug connection 13