Detroit Diesel MBE 4000 Service Manual page 13

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DDEC-ECU — Engine-Resident Control Unit

The DDEC-ECU control unit is located on the left-hand side of the engine. See Figure 1. The

DDEC-ECU processes the data received from the DDEC-VCU, for example the position of the

accelerator pedal, engine brake, etc. These data are evaluated together with the data from the

sensors on the engine, such as, charge and oil pressure and coolant and fuel temperature. The

data is then compared to the characteristic maps or lines stored in the DDEC-ECU. From these

data, quantity and timing of injection are calculated and the unit pumps are actuated accordingly

through the solenoid valves.

To obtain a replacement DDEC-ECU, all the data given on the DDEC-ECU label are

All information subject to change without notice.

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DDEC-ECU Control Unit Location

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MBE 4000 SERVICE MANUAL

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