Magneti Marelli

Magneti Marelli Powertrain, S.p.a.

Massimo Zanotti

Stefano Sgatti

Loris Lambertini

Claudio Grossi

Luigi De Luca

Marco Panciroli

Stefano Musolesi

Filippo Cavanna

Fabio Sensi

Francesco Alunni

Roberto Piciotti

Maurizio Fiorentini

Giuseppe Gamberini

Domenico Tavella

Nicola Garagnani

Daniele Benassi

Ferdinando De Cristofaro

Jacopo Bucchi

Andrea Leoni

Francesco Monacelli

Canio Rocco Caterini

Roberto Atzori

Carlo Enrico Sala De Llobet

Luca Zecca

Method to control the sealing of a blow-by gas breather circuit of an internal combustion engine, comprising a separator device to agglomerate the particles of finely atomised lubricating oil and to remove the solid particulate particles and having an outlet connected by a pipe to an intake pipe through which the gas purified from the lubricating oil and the particulate flows out and a pressure sensor; the method providing the following steps: acquiring the signal coming from said pressure sensor; filtering the signal coming from the pressure sensor; integrating over time the square of the filtrated signal coming from the pressure sensor; and determining the sealing of the pipe according to the integrated signal which is the combustion energy generated by the internal combustion engine.

Method to control the sealing of a blow-by gas breather circuit of an internal combustion engine

A method of controlling a vehicle equipped with an internal-combustion engine with a 'stop and start' system. The method provides, during vehicle running, for learning the 'duty cycle' values associated with the odd gears and even gears, determining the &#x201c;maximum duty cycle&#x201d; value for the odd gears and &#x201c;minimum duty cycle&#x201d; value for the even gears, determining a duty-cycle band to which the &#x201c;neutral gear&#x201d; condition corresponds on the basis of the &#x201c;minimum duty cycle&#x201d; value for the even gears and &#x201c;maximum duty cycle&#x201d; value for the odd gears, and controlling the &#x201c;stop and start&#x201d; system on the basis of the duty-cycle band to which the &#x201c;neutral gear&#x201d; condition corresponds.

Method of controlling a vehicle equipped with an internal combustion engine with a stop and start system

A method of determining opening of an intake valve of an internal combustion engine, the method including the steps of: determining the time pattern of an intake pressure in an intake manifold of the internal combustion engine, the time pattern of the rotation speed of a drive shaft of the internal combustion engine, or the time pattern of a voltage at the terminals of a battery of the internal combustion engine; determining an intake-frequency component of the intake pressure, the rotation speed, or the voltage; and

Method of determining opening of an internal combustion engine intake valve

An acquisition system for detecting the angular position of a gas knob of a motorcycle; the acquisition system is provided with: a fixed supporting body; a mobile element, which is mounted mobile in the supporting body; a transmission device, mechanically connected to the gas knob and to the mobile element for transmitting the motion from the gas knob to the mobile element itself; and a main position sensor, which is carried by the supporting body, is coupled to the mobile element for determining the angular position of the mobile element, and is designed to provide two mutually redundant measurements of the angular position of the mobile element.

Integrated control system for an internal-combustion engine of a motorcycle provided with a gas knob and acquisition system for detecting the angular position of a knob for the gas of a motorcycle

A method for detecting the angular position of a gas knob of a motorcycle; the method presents the steps of: detecting simultaneously four mutually redundant measurements of the angular position of the gas knob by means of two mutually independent angular-position sensors forming part of an acquisition system; making a cross comparison two by two between the four measurements for diagnosing any possible malfunctioning of the angular-position sensors; and determining the angular position of the gas knob, using at least one measurement supplied by an angular-position sensor operating properly.

Method for detecting the angular position of a knob for the gas of a motorcycle

A control method of a fuel feeding system in a bi-fuel internal combustion engine; the feeding system presents: a least a first injector adapted to inject a first fuel type; a least a second injector adapted to inject a second fuel type; a common electronic control unit adapted to drive both injectors; and a switching device, which is controlled by the common electronic control unit and is adapted to electrically connect both injectors to the common electronic control unit by means of at least a first relay adapted to connect/disconnect the first injector to/from the common electronic control unit and by means of at least a second relay adapted to connect/disconnect the second injector to/from the common electronic control unit.

Control method of a fuel feeding system in a bi-fuel internal combustion engine

Method for finding the angular acceleration of a drive shaft of an internal combustion engine by means of a gear wheel integral with said drive shaft; the method making provision to identify, in each complete revolution of the drive shaft, a number of angular measurement lines, to measure the time used by the drive shaft to pass over each angular measurement line using the signal supplied by the gear wheel, to add algebraically, to the time used by the drive shaft to pass over each angular measurement line, a corresponding correction coefficient that takes account of any asymmetries in the gear wheel, and to determine the value of angular acceleration of the drive shaft as a function of the time used by the drive shaft to pass over each angular measurement line; the value of the correction coefficients is determined in the course of an engine fuel cut-off phase.

Method for finding the angular acceleration of a drive shaft of an internal combustion engine by means of a gear wheel integral with said drive shaft

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Vado, Italy

Massimo Zanotti