Magneti Marelli S.p.a.

Magneti Marelli Powertrain, S.p.a.

Alma Mater Studiorum-universitá Di Bologna

Marelli Europe S.p.a.

Fabrizio Ponti

Marco Panciroli

Matteo De Cesare

Vittorio Ravaglioli

Gabriele Serra

Stefano Sgatti

Federico Stola

Federico Covassin

Carlo Siviero

Giacomo Silvagni

A method of estimating the MFB50 combustion index of the cylinders of an internal combustion engine provided with a drive shaft coupled to at least a pair of position sensors, each of which is arranged at a respective end of the drive shaft; the estimation method comprising the steps of: acquiring the signals coming from two position sensors; determining the angular torsion of the drive shaft based on the signals from the two position sensors; and estimating the MFB50 combustion index of the single cylinders of the internal combustion engine based on the angular torsion of the drive shaft.

Method of estimating the MFB50 combustion index and the instantaneous torque generated by the cylinders of an internal combustion engine

A method to control a supercharged internal combustion engine by means of a turbocharger provided with a turbine and a compressor which compresses the air taken in; the control method includes the steps of determining the instantaneous rotation speed of the turbocharger; and calculating the average power delivered by the turbine as a function of the absolute value of the j-th harmonic component of the instantaneous rotation speed of the turbocharger and of the instantaneous rotation speed of the turbocharger; and controlling the supercharged internal combustion engine as a function of the average power delivered by the turbine.

Method to control a supercharged internal combustion engine provided with a turbocharger by means of an estimation of the average power delivered by the turbine of the turbocharger

A method and system for controlling an internal combustion power train, whereby the values of various operating parameters of the power train are measured by means of a number of sensors, and operation of the engine is monitored by means of at least one control unit, which is physically separate from the engine block and connected to the sensors; at least one pressure sensor is housed in the control unit, is physically separate from the engine block, and determines the intensity of pressure waves generated by the power train; and the control unit determines the value of at least one operating parameter of the power train as a function of the intensity of the pressure waves generated by the power train.

Power train control method and system

A method for detecting misfiring in an internal combustion engine by analysing the angular acceleration of the drive shaft, in which the value of the angular acceleration is estimated at predetermined angular positions of the drive shaft, the absolute value of the angular acceleration is compared with a predetermined threshold value, and the presence of a misfire is detected if the absolute value of the angular acceleration is greater than the predetermined threshold value; when the presence of a misfire is detected, a set of values of the angular acceleration subsequent to the value of the angular acceleration at which the misfire has been detected is filtered to eliminate the oscillation component generated by the misfire with respect to the value of the angular acceleration.

Method for detecting misfiring in an internal combustion engine by analysing the angular acceleration of the drive shaft

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Forli, Italy

Fabrizio Ponti