1.3 MULTIJET 16V
(75 & 90 HP)
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3.8 MJD 6F3 diesel engine management control unit
3.8.1 Features
The Magneti Marelli MJD 6F3 common rail is a high-pressure (1,400 bar, 75 HP – 1,600 bar,
90 HP) electronic injection system, with the possibility of modulating these pressures from 150
bar up to the maximum working value of 1,400/1,600 bar, regardless of the rotation speed and
the engine load:
operation at high engine speeds (up to 5,000 r.p.m. in full-loaded conditions);
injection control accuracy (advance and injection duration);
- less consumption;
- lower emission levels.
The main functions of the system are essentially as follows:
fuel temperature control;
engine coolant temperature control;
injected fuel amount control;
idling speed control;
fuel cut-off during the release phase (cut-off);
idling cylinder balancing control;
engine jerk prevent check;
acceleration exhaust smoke level control;
exhaust gas recirculation (E.G.R.) control;
max. torque restraint control;
peak r.p.m. restraint control;
preheating spark plug control;
air-conditioning system actuation control (vehicles equipped with A/C);
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auxiliary fuel pump control;