Repair MR PLD Engine Control Unit

The engine control unit „MR-PLD“ (pump-line-nozzle system) controls the electronic Diesel-fuel injection
and is also designed for the engine series 450, 500 and 900. The main function of the control unit is the
exact electric control of the solenoid valves at the injector valves. Regarding this, the optimum start of
injection and the necessary injection quantity for the torque (or the desired speed in the case of a PTO
speed control operation) demanded by the control unit on the engine side, are calculated and set (mapping
specific, through measured engine and ambient conditions).
The control unit also provides further features like fault recognition, possibility of limp-home operating
modes, diagnosis and interfaces with other control systems.