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Marco Tonetti

Andrea Ruggiero

Francesco Richard

A method for balancing the torque generated by the cylinders of an internal combustion engine comprising the stages of: determining for each cylinder quantity which indicates the torque generated by the cylinder in a given engine cycle; determining for each cylinder a nominal fuel amount to be injected in this cylinder in a subsequent engine cycle; determining for each cylinder a correction coefficient of the nominal fuel amount to be injected in the cylinder in this subsequent engine cycle according to the quantity determined for this cylinder; correcting the nominal fuel amount to be injected in each cylinder according to the correction coefficient determined for the cylinder itself; and injecting into each cylinder the corresponding corrected fuel amount.

Method for balancing the torque generated by the cylinders of an internal combustion engine, in particular a direct-injection diesel engine provided with a common rail injection system

A system for detecting the operative strokes of an internal combustion reciprocating engine ( ) includes a plurality of cylinders (C , C , C , C ), a crankshaft ( ) and at least one camshaft ( ). The system also includes first and second sensors ( ), each including one sensor ( ) and one wheel ( ), the first sensor detecting the frequency of revolution of the crankshaft ( ) and the angular position of at least one cambshaft ( ), respectively. The second sensor includes a phonic wheel ( ) split into a number of sectors (S , S , S , S ) equal to the number of cylinders (C , C , C , C ) in which each sector (S , S , S , S ) has a characteristic number of projections and recesses ( ) which is different from those of other sectors. An electronic control unit ( ) establishes the operative strokes of the cylinders (C , C , C , C ) in accordance with the signals output by the first and second sensors.

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