Method and system for combustion control in a combustion chamber of an internal combustion engine
AssigneeFpt Industrial S.P.A.
InventorsRoberto Pittatore, Francesco Sanarico
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Abstract
A method for ignition control in a combustion chamber of an internal combustion engine by means of acquiring an electric signal relating to ionizing currents emitted in said combustion chamber, comprising a step of detecting a substantially stepped trend of said electric signal and a consequent step of inhibiting a corrective action of an ignition advance and/or of a fuel injection limitation curve in the combustion chamber.
Claims14
A method for ignition control in a combustion chamber (5) of an internal combustion engine (E) by means of acquiring (i) an electric signal representing ionizing currents emitted in said combustion chamber, the method comprising a step of selecting (ii) a portion of said signal corresponding to a thermal phase (III) of said ionizing currents and of detecting (iii) a substantially stepped trend of said signal and a further consequent step of inhibiting (iv) a corrective action of an ignition advance and/or of a fuel injection limitation curve in the combustion chamber.
A method for ignition control in a combustion chamber of an internal combustion engine by means of acquiring (i) an electric signal representing ionizing currents emitted in said combustion chamber (4), wherein said signal is substantially periodic, the method comprising a step of measuring (ii-b) a timeframe, in which said signal is continuously above a predetermined intensity threshold, when said timeframe exceeds a predetermined time threshold or a predetermined fraction of said period, then a substantially stepped trend of said signal is indirectly detected (iii) and a further consequent inhibiting step (iv) is carried out so as to inhibit a corrective action of an ignition advance and/or of a fuel injection limitation curve in the combustion chamber.
Dependencies are inferred from the claim text.