Magneti Marelli S.p.a.

Magneti Marelli Powertrain, S.p.a.

Magneti Merelli Powertrin S.p.a.

Maurizio Fiorentini

Claudio Grossi

Loris Lambertini

Roberto Piciotti

Giuseppe Gamberini

Andrea Alessandri

Massimo Mattioli

Stefano Musolesi

Fabio Sensi

Massimo Zanotti

Fabrizio Naccarato

Mirco Alberghini

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 control method of an electronic injection fuel feeding system for an internal combustion engine and displaying at least one injector and a non-continuous flow rate fuel pump actuated by a an actuator device; the control method includes the steps of: determining the desired fuel amount which must be injected at each cycle of the internal combustion engine; driving the injector for injecting the desired fuel amount at each cycle of the internal combustion engine; determining an optimal pumping frequency of the actuator device of the fuel pump according to the desired fuel amount which must be injected at each cycle of the internal combustion engine; and actuating the actuator device of the fuel pump at the optimal pumping frequency.

Control method of an electronic injection fuel feeding system

Control method for the mixture ratio in a multi-cylinder internal combustion engine, the control method providing for the following: reading a first real value of the mixture ratio via a master lambda sensor associated with a first cylinder group, reading a second real value of the mixture ratio via a slave lambda sensor associated with a second cylinder group, calculating a first amount of fuel to inject into the cylinders of the first cylinder group to track a mixture ratio target value by using the first real value of the mixture ratio as a feedback variable, calculating the mean of the second real value of the mixture ratio in the detection window, calculating a correction value for the amount of fuel to inject based on the difference between a target value and the mean of the second real value of the mixture ratio, and calculating a second amount of fuel to inject into the cylinders of the second cylinder group by applying the correction value to the first amount of fuel to inject into the cylinders of the first cylinder group.

Control method for mixture ratio in a multi-cylinder internal combustion engine equipped with at least two lambda sensors placed upstream of a catalytic converter

A system for acquiring the angular position of a gas twist grip in a motorcycle; the acquisition system is provided with a fixed supporting body; a rotating shaft turnable mounted in the supporting body; a transmission device mechanically connected to the gas twist grip and to the revolving shaft to transmit the motion of the gas twist grip to the revolving shaft itself; a main angular position sensor, which is carried by the supporting body, is coupled to the revolving shaft to determine the angular position of revolving shaft, and is adapted to provide two reciprocally redundant measures of the angular position of the revolving shaft; and an angular control position sensor, which is carried by the supporting body, is coupled to the revolving shaft to determine the angular position of the revolving shaft, and is adapted to provide two reciprocally redundant measures of the angular position of the revolving shaft.

Acquisition system for detecting the angular position of a gas twist grip in a motorcycle

A regulating device for regulating the air intake of an internal combustion engine, and comprising at least one throttled body having at least one air feed conduit connectable to the engine, and a first and second throttle housed in said at least one feed conduit to regulate air intake of the engine on command; the regulating device comprises a manually operated accelerator control device connected mechanically to the first throttle to rotate the first throttle about a first axis of rotation into an operating angular position related to the engine torque demanded by the user operating the accelerator control device; and electric control means for rotating the second throttle about a second axis of rotation into a target angular position determined as a function of the operating angular position of the first throttle.

Regulating device for regulating the air intake of a vehicle internal combustion engine

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Molinella, Italy

Maurizio Fiorentini