Patent ID: 7694668

Claim:
System for controlling the operation of a motor vehicle diesel engine associated with means for supplying fuel to the cylinders thereof and with means for recirculating exhaust gases to the inlet thereof, the control system comprising: means for driving the supply means as a function of the rotation speed of the engine and of an effective control point of the torque thereof stemming from a driver of the vehicle, means for driving the recirculation means as a function of at least the effective torque control point, means for determining a reconstructed torque control point from information supplied by means for acquiring the richness of the exhaust gases of the engine and the flow rate at the inlet thereof, wherein the reconstructed torque control point corresponds to the engine torque resulting from an effective torque control point that would be supplied to an engine operating in an optimal way, so that a difference between the effective control point and the reconstructed torque control point results from drifts over time of characteristics of the engine; and means for adjusting the means for driving the recirculation means as a function of the effective torque control point and of the reconstructed torque control point so as to minimize the emission of pollutants emitted by the engine.